From patchwork Thu Jul 11 22:31:04 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Atish Kumar Patra X-Patchwork-Id: 13731159 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id AC4BAC3DA45 for ; Thu, 11 Jul 2024 22:34:08 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sS2KA-00005E-R5; Thu, 11 Jul 2024 18:31:38 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sS2K8-0008R8-T4 for qemu-devel@nongnu.org; Thu, 11 Jul 2024 18:31:37 -0400 Received: from mail-pl1-x629.google.com ([2607:f8b0:4864:20::629]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sS2K6-0001YB-56 for qemu-devel@nongnu.org; Thu, 11 Jul 2024 18:31:36 -0400 Received: by mail-pl1-x629.google.com with SMTP id d9443c01a7336-1fb70169c23so12917635ad.1 for ; Thu, 11 Jul 2024 15:31:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rivosinc-com.20230601.gappssmtp.com; s=20230601; t=1720737091; x=1721341891; darn=nongnu.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=sq6ZPtLM8cZpjKl0EALHfFJyJDausZH14SH/XMvmzaY=; b=i8GhUYZHr9HnomUP8iloRqDQMc/lAqv1RxmTJN3Qu4nNdvsyXzP0sqo5p4YLiqJ34S gZ0n5rhvN2BFR0syGPnkAT0XWJcs57OeT56XLUgGYch+FN0BZEcKmICJnhuec1hY4UzH wcr3Ym1H963JZGRTNmwrT9Zxb4wdg0e+3Uabg4lqFBsIHVlFaPWat/R9yO29k8fcaDOA m9zdIXUeD0437jeBkrQDn40fH8rAl3+wyAXgdrJ++LcOcW0dCbj4s6DXCMLQ2wspPJUH VMgeHD98ijqer0K53RpHwYTPqOafpDLyHs1fiavtd/kNwWdRHo5gFmRxr/W9hFwcatRq gdhA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1720737091; x=1721341891; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=sq6ZPtLM8cZpjKl0EALHfFJyJDausZH14SH/XMvmzaY=; b=m64ikvN/xGwLkVA7U0xaN/SL0JatBTuhLex+wc9uqMFKS38GcJYTxFFz7vE9rcWT1W Yrw9kE97DKbY4G2I/d9xut/9cari2qRYvSjXEwZqaboqEBKb/zNUVkIDIICMzdV/qZWL RT1eSPvEItLM0a7oNidDeqHY6V7h4xDQxyA9QSltriT8oxOIeRUbSf/qRpf4pEj9mD/6 p+6J+MLVzxlNtwn5fQ2Gtj5OxWqW/GQqvUubzg/sQw0nhT1skdvhnuL98LAc6IPL94ZG MGQryrZvlRSMrj50Z88EErfo4n4FjtUMFS/muYZcWUAJHVbdOg5spsOj2PWHf4ln3KC6 4tMw== X-Forwarded-Encrypted: i=1; AJvYcCXpQLA2+B5T/8xVop5Oe7AwAsfTI1GO+dc1UFbTnflL5ZUMKFhxSdYd0uhKYWjBeQKFFMN+fNFlD+dL4CsiMs8LKhwxWJw= X-Gm-Message-State: AOJu0YzYdFc5itE4Jdgp/Cwqc8hRN1frSzTg98o9uYjpNaLYC5wKAcvQ prynvpV9MIhs1WunwjfJXAvSW46lR4XE/gOzswgoCC/Uzksp+FjORtjm3cQMad8= X-Google-Smtp-Source: AGHT+IEtRllJw58z5xoeI0uAXNqfsZR17+zreonrSt2yP+iSgMMPrIVcYAX/uaxpldPIaUa4WHsMdQ== X-Received: by 2002:a17:902:dacb:b0:1fb:284b:b39a with SMTP id d9443c01a7336-1fbb6d044a5mr91533685ad.21.1720737090565; Thu, 11 Jul 2024 15:31:30 -0700 (PDT) Received: from atishp.ba.rivosinc.com ([64.71.180.162]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-1fbb6b34ca2sm55161565ad.53.2024.07.11.15.31.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 11 Jul 2024 15:31:30 -0700 (PDT) From: Atish Patra Date: Thu, 11 Jul 2024 15:31:04 -0700 Subject: [PATCH v8 01/13] target/riscv: Combine set_mode and set_virt functions. MIME-Version: 1.0 Message-Id: <20240711-smcntrpmf_v7-v8-1-b7c38ae7b263@rivosinc.com> References: <20240711-smcntrpmf_v7-v8-0-b7c38ae7b263@rivosinc.com> In-Reply-To: <20240711-smcntrpmf_v7-v8-0-b7c38ae7b263@rivosinc.com> To: qemu-riscv@nongnu.org, qemu-devel@nongnu.org Cc: palmer@dabbelt.com, liwei1518@gmail.com, zhiwei_liu@linux.alibaba.com, bin.meng@windriver.com, dbarboza@ventanamicro.com, alistair.francis@wdc.com X-Mailer: b4 0.15-dev-13183 Received-SPF: pass client-ip=2607:f8b0:4864:20::629; envelope-from=atishp@rivosinc.com; helo=mail-pl1-x629.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Rajnesh Kanwal Combining riscv_cpu_set_virt_enabled() and riscv_cpu_set_mode() functions. This is to make complete mode change information available through a single function. This allows to easily differentiate between HS->VS, VS->HS and VS->VS transitions when executing state update codes. For example: One use-case which inspired this change is to update mode-specific instruction and cycle counters which requires information of both prev mode and current mode. Signed-off-by: Rajnesh Kanwal Reviewed-by: Alistair Francis Reviewed-by: Daniel Henrique Barboza --- target/riscv/cpu.h | 2 +- target/riscv/cpu_helper.c | 57 +++++++++++++++++++++++------------------------ target/riscv/op_helper.c | 17 +++++--------- 3 files changed, 35 insertions(+), 41 deletions(-) diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h index 90b8f1b08f83..46faefd24e09 100644 --- a/target/riscv/cpu.h +++ b/target/riscv/cpu.h @@ -544,7 +544,7 @@ void riscv_cpu_set_aia_ireg_rmw_fn(CPURISCVState *env, uint32_t priv, RISCVException smstateen_acc_ok(CPURISCVState *env, int index, uint64_t bit); #endif /* !CONFIG_USER_ONLY */ -void riscv_cpu_set_mode(CPURISCVState *env, target_ulong newpriv); +void riscv_cpu_set_mode(CPURISCVState *env, target_ulong newpriv, bool virt_en); void riscv_translate_init(void); G_NORETURN void riscv_raise_exception(CPURISCVState *env, diff --git a/target/riscv/cpu_helper.c b/target/riscv/cpu_helper.c index 6709622dd3ab..10d3fdaed376 100644 --- a/target/riscv/cpu_helper.c +++ b/target/riscv/cpu_helper.c @@ -619,30 +619,6 @@ void riscv_cpu_set_geilen(CPURISCVState *env, target_ulong geilen) env->geilen = geilen; } -/* This function can only be called to set virt when RVH is enabled */ -void riscv_cpu_set_virt_enabled(CPURISCVState *env, bool enable) -{ - /* Flush the TLB on all virt mode changes. */ - if (env->virt_enabled != enable) { - tlb_flush(env_cpu(env)); - } - - env->virt_enabled = enable; - - if (enable) { - /* - * The guest external interrupts from an interrupt controller are - * delivered only when the Guest/VM is running (i.e. V=1). This means - * any guest external interrupt which is triggered while the Guest/VM - * is not running (i.e. V=0) will be missed on QEMU resulting in guest - * with sluggish response to serial console input and other I/O events. - * - * To solve this, we check and inject interrupt after setting V=1. - */ - riscv_cpu_update_mip(env, 0, 0); - } -} - int riscv_cpu_claim_interrupts(RISCVCPU *cpu, uint64_t interrupts) { CPURISCVState *env = &cpu->env; @@ -715,7 +691,7 @@ void riscv_cpu_set_aia_ireg_rmw_fn(CPURISCVState *env, uint32_t priv, } } -void riscv_cpu_set_mode(CPURISCVState *env, target_ulong newpriv) +void riscv_cpu_set_mode(CPURISCVState *env, target_ulong newpriv, bool virt_en) { g_assert(newpriv <= PRV_M && newpriv != PRV_RESERVED); @@ -736,6 +712,28 @@ void riscv_cpu_set_mode(CPURISCVState *env, target_ulong newpriv) * preemptive context switch. As a result, do both. */ env->load_res = -1; + + if (riscv_has_ext(env, RVH)) { + /* Flush the TLB on all virt mode changes. */ + if (env->virt_enabled != virt_en) { + tlb_flush(env_cpu(env)); + } + + env->virt_enabled = virt_en; + if (virt_en) { + /* + * The guest external interrupts from an interrupt controller are + * delivered only when the Guest/VM is running (i.e. V=1). This + * means any guest external interrupt which is triggered while the + * Guest/VM is not running (i.e. V=0) will be missed on QEMU + * resulting in guest with sluggish response to serial console + * input and other I/O events. + * + * To solve this, we check and inject interrupt after setting V=1. + */ + riscv_cpu_update_mip(env, 0, 0); + } + } } /* @@ -1648,6 +1646,7 @@ void riscv_cpu_do_interrupt(CPUState *cs) { RISCVCPU *cpu = RISCV_CPU(cs); CPURISCVState *env = &cpu->env; + bool virt = env->virt_enabled; bool write_gva = false; uint64_t s; @@ -1778,7 +1777,7 @@ void riscv_cpu_do_interrupt(CPUState *cs) htval = env->guest_phys_fault_addr; - riscv_cpu_set_virt_enabled(env, 0); + virt = false; } else { /* Trap into HS mode */ env->hstatus = set_field(env->hstatus, HSTATUS_SPV, false); @@ -1799,7 +1798,7 @@ void riscv_cpu_do_interrupt(CPUState *cs) env->htinst = tinst; env->pc = (env->stvec >> 2 << 2) + ((async && (env->stvec & 3) == 1) ? cause * 4 : 0); - riscv_cpu_set_mode(env, PRV_S); + riscv_cpu_set_mode(env, PRV_S, virt); } else { /* handle the trap in M-mode */ if (riscv_has_ext(env, RVH)) { @@ -1815,7 +1814,7 @@ void riscv_cpu_do_interrupt(CPUState *cs) mtval2 = env->guest_phys_fault_addr; /* Trapping to M mode, virt is disabled */ - riscv_cpu_set_virt_enabled(env, 0); + virt = false; } s = env->mstatus; @@ -1830,7 +1829,7 @@ void riscv_cpu_do_interrupt(CPUState *cs) env->mtinst = tinst; env->pc = (env->mtvec >> 2 << 2) + ((async && (env->mtvec & 3) == 1) ? cause * 4 : 0); - riscv_cpu_set_mode(env, PRV_M); + riscv_cpu_set_mode(env, PRV_M, virt); } /* diff --git a/target/riscv/op_helper.c b/target/riscv/op_helper.c index 2baf5bc3ca19..ec1408ba0fb1 100644 --- a/target/riscv/op_helper.c +++ b/target/riscv/op_helper.c @@ -264,7 +264,7 @@ void helper_cbo_inval(CPURISCVState *env, target_ulong address) target_ulong helper_sret(CPURISCVState *env) { uint64_t mstatus; - target_ulong prev_priv, prev_virt; + target_ulong prev_priv, prev_virt = env->virt_enabled; if (!(env->priv >= PRV_S)) { riscv_raise_exception(env, RISCV_EXCP_ILLEGAL_INST, GETPC()); @@ -307,11 +307,9 @@ target_ulong helper_sret(CPURISCVState *env) if (prev_virt) { riscv_cpu_swap_hypervisor_regs(env); } - - riscv_cpu_set_virt_enabled(env, prev_virt); } - riscv_cpu_set_mode(env, prev_priv); + riscv_cpu_set_mode(env, prev_priv, prev_virt); return retpc; } @@ -347,16 +345,13 @@ target_ulong helper_mret(CPURISCVState *env) mstatus = set_field(mstatus, MSTATUS_MPRV, 0); } env->mstatus = mstatus; - riscv_cpu_set_mode(env, prev_priv); - - if (riscv_has_ext(env, RVH)) { - if (prev_virt) { - riscv_cpu_swap_hypervisor_regs(env); - } - riscv_cpu_set_virt_enabled(env, prev_virt); + if (riscv_has_ext(env, RVH) && prev_virt) { + riscv_cpu_swap_hypervisor_regs(env); } + riscv_cpu_set_mode(env, prev_priv, prev_virt); + return retpc; } From patchwork Thu Jul 11 22:31:05 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Atish Kumar Patra X-Patchwork-Id: 13731157 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id B1815C3DA45 for ; Thu, 11 Jul 2024 22:33:47 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sS2KD-0000Fl-DD; Thu, 11 Jul 2024 18:31:41 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sS2KA-0008UM-0A for qemu-devel@nongnu.org; Thu, 11 Jul 2024 18:31:38 -0400 Received: from mail-pl1-x62a.google.com ([2607:f8b0:4864:20::62a]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sS2K6-0001YY-58 for qemu-devel@nongnu.org; Thu, 11 Jul 2024 18:31:37 -0400 Received: by mail-pl1-x62a.google.com with SMTP id d9443c01a7336-1fb222a8eaeso10374155ad.3 for ; Thu, 11 Jul 2024 15:31:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rivosinc-com.20230601.gappssmtp.com; s=20230601; t=1720737092; x=1721341892; darn=nongnu.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=fDD9iROrIst0nip8AVI59daMkN6MkmnFrZb7icBkdaA=; b=zAOI3445697qGsdRGyqcKXXDqYHuunW7Lbu4poYMcXtqcysEIQT20X6XQGiaAbzh7n 2DN0lCLooaD00mS6on/U9+xI7SjbsQh6Biz0qoTSKGBs1sdAh0rgvNdmCEabw4RRmwcU yyj2v0DC2S5X8slac/0GehyfXqBmmdH+BQ0W1ktYU+FZRBRgIvjpaY0stvz2ZBewj5LL vI/Ljn/iizVbAbovnC65YgYQ/vCtqE3A6uckN2knnf8XZ8uabLWgE2bBG57VFd3f9Pg0 imZbpm/3fgGSg1bAcFeLfIn3ZEPxg8jSmK6WQxO2Cz0FQSVM+aoXuw2Hrrk0rIL5ujHI 6YKw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1720737092; x=1721341892; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=fDD9iROrIst0nip8AVI59daMkN6MkmnFrZb7icBkdaA=; b=NqkRSf7SFYQXN0LSISq0cPHy0UrMvPu6yJ3jm+UinYKJ44eQqdyM62NEyiiTtjfp4m +xIt0Bdq0+WzRWqOpDcgv1aYPIQE/YuyfwM9GgXwTnq5/qKQndKj0jAQYMZFcNWhvRaz ZpsmNUtqapESEV7MtCdRDimsFTKT9aR3QSqS2BlEVsPIKtQrHfmZabKTBdM8p+2Begfb XeOk7r2BpCQaFlrFgtIWzZxd2TUYq8i4X/MpP8JLaiqWXVDoO9xghqaS/O93sz7kRoiC 19yfA4DSIjFpjhhdu5Lzk1ADoe8YyY2N1gfMAgaf58DjBG3w6G5q5z8ml535ckgKzk2T Oa+Q== X-Forwarded-Encrypted: i=1; AJvYcCWQtwtmWcdJpJLFA3vElGLTHbjgNFWP4PPHRwtPHh+UYuj87o5pJZaF/L+eBcD9TUQNf9SawB9/1nON/MqH5NvRyFAyMW8= X-Gm-Message-State: AOJu0Yw8C+8IDYbB4XIYlQoJoEJgfdZ4U+JT0me2ps+7QZpbbG74r2QJ bY1li50SF5DSkPiPoNaY8L74WTivQkNs7cxxNt6HG11sYbCTD38Pkce4yw2hA2Q= X-Google-Smtp-Source: AGHT+IHY/Fr9g8bN6yWibltgJcBrH7/6PPS4DEGsBtB8YTR3QOOHugVxkW0MpUTvXda6p6+26gd65A== X-Received: by 2002:a17:902:f685:b0:1f7:3a5b:2f0 with SMTP id d9443c01a7336-1fbb6d607b0mr80933605ad.44.1720737091783; Thu, 11 Jul 2024 15:31:31 -0700 (PDT) Received: from atishp.ba.rivosinc.com ([64.71.180.162]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-1fbb6b34ca2sm55161565ad.53.2024.07.11.15.31.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 11 Jul 2024 15:31:31 -0700 (PDT) From: Atish Patra Date: Thu, 11 Jul 2024 15:31:05 -0700 Subject: [PATCH v8 02/13] target/riscv: Fix the predicate functions for mhpmeventhX CSRs MIME-Version: 1.0 Message-Id: <20240711-smcntrpmf_v7-v8-2-b7c38ae7b263@rivosinc.com> References: <20240711-smcntrpmf_v7-v8-0-b7c38ae7b263@rivosinc.com> In-Reply-To: <20240711-smcntrpmf_v7-v8-0-b7c38ae7b263@rivosinc.com> To: qemu-riscv@nongnu.org, qemu-devel@nongnu.org Cc: palmer@dabbelt.com, liwei1518@gmail.com, zhiwei_liu@linux.alibaba.com, bin.meng@windriver.com, dbarboza@ventanamicro.com, alistair.francis@wdc.com X-Mailer: b4 0.15-dev-13183 Received-SPF: pass client-ip=2607:f8b0:4864:20::62a; envelope-from=atishp@rivosinc.com; helo=mail-pl1-x62a.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org mhpmeventhX CSRs are available for RV32. The predicate function should check that first before checking sscofpmf extension. Fixes: 14664483457b ("target/riscv: Add sscofpmf extension support") Reviewed-by: Daniel Henrique Barboza Reviewed-by: Alistair Francis Signed-off-by: Atish Patra --- target/riscv/csr.c | 67 +++++++++++++++++++++++++++++++----------------------- 1 file changed, 38 insertions(+), 29 deletions(-) diff --git a/target/riscv/csr.c b/target/riscv/csr.c index 432c59dc66be..3ad851707e5c 100644 --- a/target/riscv/csr.c +++ b/target/riscv/csr.c @@ -227,6 +227,15 @@ static RISCVException sscofpmf(CPURISCVState *env, int csrno) return RISCV_EXCP_NONE; } +static RISCVException sscofpmf_32(CPURISCVState *env, int csrno) +{ + if (riscv_cpu_mxl(env) != MXL_RV32) { + return RISCV_EXCP_ILLEGAL_INST; + } + + return sscofpmf(env, csrno); +} + static RISCVException any(CPURISCVState *env, int csrno) { return RISCV_EXCP_NONE; @@ -5101,91 +5110,91 @@ riscv_csr_operations csr_ops[CSR_TABLE_SIZE] = { [CSR_MHPMEVENT31] = { "mhpmevent31", any, read_mhpmevent, write_mhpmevent }, - [CSR_MHPMEVENT3H] = { "mhpmevent3h", sscofpmf, read_mhpmeventh, + [CSR_MHPMEVENT3H] = { "mhpmevent3h", sscofpmf_32, read_mhpmeventh, write_mhpmeventh, .min_priv_ver = PRIV_VERSION_1_12_0 }, - [CSR_MHPMEVENT4H] = { "mhpmevent4h", sscofpmf, read_mhpmeventh, + [CSR_MHPMEVENT4H] = { "mhpmevent4h", sscofpmf_32, read_mhpmeventh, write_mhpmeventh, .min_priv_ver = PRIV_VERSION_1_12_0 }, - [CSR_MHPMEVENT5H] = { "mhpmevent5h", sscofpmf, read_mhpmeventh, + [CSR_MHPMEVENT5H] = { "mhpmevent5h", sscofpmf_32, read_mhpmeventh, write_mhpmeventh, .min_priv_ver = PRIV_VERSION_1_12_0 }, - [CSR_MHPMEVENT6H] = { "mhpmevent6h", sscofpmf, read_mhpmeventh, + [CSR_MHPMEVENT6H] = { "mhpmevent6h", sscofpmf_32, read_mhpmeventh, write_mhpmeventh, .min_priv_ver = PRIV_VERSION_1_12_0 }, - [CSR_MHPMEVENT7H] = { "mhpmevent7h", sscofpmf, read_mhpmeventh, + [CSR_MHPMEVENT7H] = { "mhpmevent7h", sscofpmf_32, read_mhpmeventh, write_mhpmeventh, .min_priv_ver = PRIV_VERSION_1_12_0 }, - [CSR_MHPMEVENT8H] = { "mhpmevent8h", sscofpmf, read_mhpmeventh, + [CSR_MHPMEVENT8H] = { "mhpmevent8h", sscofpmf_32, read_mhpmeventh, write_mhpmeventh, .min_priv_ver = PRIV_VERSION_1_12_0 }, - [CSR_MHPMEVENT9H] = { "mhpmevent9h", sscofpmf, read_mhpmeventh, + [CSR_MHPMEVENT9H] = { "mhpmevent9h", sscofpmf_32, read_mhpmeventh, write_mhpmeventh, .min_priv_ver = PRIV_VERSION_1_12_0 }, - [CSR_MHPMEVENT10H] = { "mhpmevent10h", sscofpmf, read_mhpmeventh, + [CSR_MHPMEVENT10H] = { "mhpmevent10h", sscofpmf_32, read_mhpmeventh, write_mhpmeventh, .min_priv_ver = PRIV_VERSION_1_12_0 }, - [CSR_MHPMEVENT11H] = { "mhpmevent11h", sscofpmf, read_mhpmeventh, + [CSR_MHPMEVENT11H] = { "mhpmevent11h", sscofpmf_32, read_mhpmeventh, write_mhpmeventh, .min_priv_ver = PRIV_VERSION_1_12_0 }, - [CSR_MHPMEVENT12H] = { "mhpmevent12h", sscofpmf, read_mhpmeventh, + [CSR_MHPMEVENT12H] = { "mhpmevent12h", sscofpmf_32, read_mhpmeventh, write_mhpmeventh, .min_priv_ver = PRIV_VERSION_1_12_0 }, - [CSR_MHPMEVENT13H] = { "mhpmevent13h", sscofpmf, read_mhpmeventh, + [CSR_MHPMEVENT13H] = { "mhpmevent13h", sscofpmf_32, read_mhpmeventh, write_mhpmeventh, .min_priv_ver = PRIV_VERSION_1_12_0 }, - [CSR_MHPMEVENT14H] = { "mhpmevent14h", sscofpmf, read_mhpmeventh, + [CSR_MHPMEVENT14H] = { "mhpmevent14h", sscofpmf_32, read_mhpmeventh, write_mhpmeventh, .min_priv_ver = PRIV_VERSION_1_12_0 }, - [CSR_MHPMEVENT15H] = { "mhpmevent15h", sscofpmf, read_mhpmeventh, + [CSR_MHPMEVENT15H] = { "mhpmevent15h", sscofpmf_32, read_mhpmeventh, write_mhpmeventh, .min_priv_ver = PRIV_VERSION_1_12_0 }, - [CSR_MHPMEVENT16H] = { "mhpmevent16h", sscofpmf, read_mhpmeventh, + [CSR_MHPMEVENT16H] = { "mhpmevent16h", sscofpmf_32, read_mhpmeventh, write_mhpmeventh, .min_priv_ver = PRIV_VERSION_1_12_0 }, - [CSR_MHPMEVENT17H] = { "mhpmevent17h", sscofpmf, read_mhpmeventh, + [CSR_MHPMEVENT17H] = { "mhpmevent17h", sscofpmf_32, read_mhpmeventh, write_mhpmeventh, .min_priv_ver = PRIV_VERSION_1_12_0 }, - [CSR_MHPMEVENT18H] = { "mhpmevent18h", sscofpmf, read_mhpmeventh, + [CSR_MHPMEVENT18H] = { "mhpmevent18h", sscofpmf_32, read_mhpmeventh, write_mhpmeventh, .min_priv_ver = PRIV_VERSION_1_12_0 }, - [CSR_MHPMEVENT19H] = { "mhpmevent19h", sscofpmf, read_mhpmeventh, + [CSR_MHPMEVENT19H] = { "mhpmevent19h", sscofpmf_32, read_mhpmeventh, write_mhpmeventh, .min_priv_ver = PRIV_VERSION_1_12_0 }, - [CSR_MHPMEVENT20H] = { "mhpmevent20h", sscofpmf, read_mhpmeventh, + [CSR_MHPMEVENT20H] = { "mhpmevent20h", sscofpmf_32, read_mhpmeventh, write_mhpmeventh, .min_priv_ver = PRIV_VERSION_1_12_0 }, - [CSR_MHPMEVENT21H] = { "mhpmevent21h", sscofpmf, read_mhpmeventh, + [CSR_MHPMEVENT21H] = { "mhpmevent21h", sscofpmf_32, read_mhpmeventh, write_mhpmeventh, .min_priv_ver = PRIV_VERSION_1_12_0 }, - [CSR_MHPMEVENT22H] = { "mhpmevent22h", sscofpmf, read_mhpmeventh, + [CSR_MHPMEVENT22H] = { "mhpmevent22h", sscofpmf_32, read_mhpmeventh, write_mhpmeventh, .min_priv_ver = PRIV_VERSION_1_12_0 }, - [CSR_MHPMEVENT23H] = { "mhpmevent23h", sscofpmf, read_mhpmeventh, + [CSR_MHPMEVENT23H] = { "mhpmevent23h", sscofpmf_32, read_mhpmeventh, write_mhpmeventh, .min_priv_ver = PRIV_VERSION_1_12_0 }, - [CSR_MHPMEVENT24H] = { "mhpmevent24h", sscofpmf, read_mhpmeventh, + [CSR_MHPMEVENT24H] = { "mhpmevent24h", sscofpmf_32, read_mhpmeventh, write_mhpmeventh, .min_priv_ver = PRIV_VERSION_1_12_0 }, - [CSR_MHPMEVENT25H] = { "mhpmevent25h", sscofpmf, read_mhpmeventh, + [CSR_MHPMEVENT25H] = { "mhpmevent25h", sscofpmf_32, read_mhpmeventh, write_mhpmeventh, .min_priv_ver = PRIV_VERSION_1_12_0 }, - [CSR_MHPMEVENT26H] = { "mhpmevent26h", sscofpmf, read_mhpmeventh, + [CSR_MHPMEVENT26H] = { "mhpmevent26h", sscofpmf_32, read_mhpmeventh, write_mhpmeventh, .min_priv_ver = PRIV_VERSION_1_12_0 }, - [CSR_MHPMEVENT27H] = { "mhpmevent27h", sscofpmf, read_mhpmeventh, + [CSR_MHPMEVENT27H] = { "mhpmevent27h", sscofpmf_32, read_mhpmeventh, write_mhpmeventh, .min_priv_ver = PRIV_VERSION_1_12_0 }, - [CSR_MHPMEVENT28H] = { "mhpmevent28h", sscofpmf, read_mhpmeventh, + [CSR_MHPMEVENT28H] = { "mhpmevent28h", sscofpmf_32, read_mhpmeventh, write_mhpmeventh, .min_priv_ver = PRIV_VERSION_1_12_0 }, - [CSR_MHPMEVENT29H] = { "mhpmevent29h", sscofpmf, read_mhpmeventh, + [CSR_MHPMEVENT29H] = { "mhpmevent29h", sscofpmf_32, read_mhpmeventh, write_mhpmeventh, .min_priv_ver = PRIV_VERSION_1_12_0 }, - [CSR_MHPMEVENT30H] = { "mhpmevent30h", sscofpmf, read_mhpmeventh, + [CSR_MHPMEVENT30H] = { "mhpmevent30h", sscofpmf_32, read_mhpmeventh, write_mhpmeventh, .min_priv_ver = PRIV_VERSION_1_12_0 }, - [CSR_MHPMEVENT31H] = { "mhpmevent31h", sscofpmf, read_mhpmeventh, + [CSR_MHPMEVENT31H] = { "mhpmevent31h", sscofpmf_32, read_mhpmeventh, write_mhpmeventh, .min_priv_ver = PRIV_VERSION_1_12_0 }, From patchwork Thu Jul 11 22:31:06 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Atish Kumar Patra X-Patchwork-Id: 13731154 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0EFDBC3DA4A for ; Thu, 11 Jul 2024 22:33:35 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sS2KC-0000ER-V8; Thu, 11 Jul 2024 18:31:41 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sS2K9-0008To-RM for qemu-devel@nongnu.org; Thu, 11 Jul 2024 18:31:37 -0400 Received: from mail-pl1-x633.google.com ([2607:f8b0:4864:20::633]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sS2K6-0001Yu-Mw for qemu-devel@nongnu.org; Thu, 11 Jul 2024 18:31:37 -0400 Received: by mail-pl1-x633.google.com with SMTP id d9443c01a7336-1fbcf71d543so10745335ad.1 for ; Thu, 11 Jul 2024 15:31:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rivosinc-com.20230601.gappssmtp.com; s=20230601; t=1720737093; x=1721341893; darn=nongnu.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=f8QHwF44NvxQcnjRolSS0dOFflbNqvfMMklGCqgsPP0=; b=cJzfKVBSTAUN2OW8Z1wC/Ot8ddbKl8T5KVzBT7OZjVZP+bHbLTuHu0Tcryb9gk22oi w+vOymwa6BR3TZU2nl7RUXbICR+vFhcSJEH++0VtJBBO/dVCp6h/fBR9aAk5AZEIR1nh wDXoWAsicCrB4QYkG4iRFIDtxyTeJ2RpCjz49BaY13I0luB+0N5nZWO4lhjtQdf3bRfU G1Fz/cgeSQRM/77tHOllu65w+tlK8T14og947pRoA9B4oGq7b1S67QCbcCalRPbseA8y EgVyp9vW0hKcHKQExuvqif3Q63AKYiXnTJIzMdxjt78q5Ao6yx1rQnB9rUV4g9XpZPZj 24AQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1720737093; x=1721341893; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=f8QHwF44NvxQcnjRolSS0dOFflbNqvfMMklGCqgsPP0=; b=uqlsYTTmN94W2mCdyVXKR5yruPGUByFaOVwh4bxckGLRVk1aQxsp4nAYY6h1OUecF4 +qbL3UB49QG1FtQ6nnnjcPfp4gPshPzGElngqnWOcCQtSY9Yn4U9TtUJ/ww6VYzl71Wo VfXAMLmReymNDKNkMcgtJ3EG9QC7a7ZoYVJbViNkLjFB43eq8jJoDB0xyqTYU+ySPvlR OGX0K6NNcMaCXnUFv5UMMAJYhT8gH8aSCnKelfwiqa7LuM/i+bEtbnt8+QZ22vPMptdY BC/jKzuplmpZLn3bsvQ5q0QhF07HGOqzmyg9G+pv/0VSseOXIHCrD5aNrgSZaPh5HkYq 9DKg== X-Forwarded-Encrypted: i=1; AJvYcCXETdm3/L5qyzTLlt8k2DGMAbze/QY80iFVHGBr3aaS+i9VzufLf+yru0t3juOkUNFYBpN02ALF8Y5zsKpHdBwMqdjhvGs= X-Gm-Message-State: AOJu0YwlqTwAgGQGkymdx+TFWQCZ03jAqaZuSjBHvIEzhLMTfFX+fyOK X8wSxHTE/q9PESbNbv7cxEEuNFc39OUGZdby/m7IrilC5mtgESG++taG+q4AVxM= X-Google-Smtp-Source: AGHT+IHxc825754wmtmEFTXYjtGfYwPdZ5jKu1/R3sQNPmVIv72V6tlg2avirzNcZB1kmhxb0Q6vOA== X-Received: by 2002:a17:902:dacd:b0:1fb:d335:b0bf with SMTP id d9443c01a7336-1fbd335bc88mr50793445ad.25.1720737093326; Thu, 11 Jul 2024 15:31:33 -0700 (PDT) Received: from atishp.ba.rivosinc.com ([64.71.180.162]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-1fbb6b34ca2sm55161565ad.53.2024.07.11.15.31.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 11 Jul 2024 15:31:32 -0700 (PDT) From: Atish Patra Date: Thu, 11 Jul 2024 15:31:06 -0700 Subject: [PATCH v8 03/13] target/riscv: Add cycle & instret privilege mode filtering properties MIME-Version: 1.0 Message-Id: <20240711-smcntrpmf_v7-v8-3-b7c38ae7b263@rivosinc.com> References: <20240711-smcntrpmf_v7-v8-0-b7c38ae7b263@rivosinc.com> In-Reply-To: <20240711-smcntrpmf_v7-v8-0-b7c38ae7b263@rivosinc.com> To: qemu-riscv@nongnu.org, qemu-devel@nongnu.org Cc: palmer@dabbelt.com, liwei1518@gmail.com, zhiwei_liu@linux.alibaba.com, bin.meng@windriver.com, dbarboza@ventanamicro.com, alistair.francis@wdc.com X-Mailer: b4 0.15-dev-13183 Received-SPF: pass client-ip=2607:f8b0:4864:20::633; envelope-from=atishp@rivosinc.com; helo=mail-pl1-x633.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Kaiwen Xue This adds the properties for ISA extension smcntrpmf. Patches implementing it will follow. Signed-off-by: Kaiwen Xue Reviewed-by: Daniel Henrique Barboza Signed-off-by: Atish Patra Reviewed-by: Alistair Francis --- target/riscv/cpu.c | 1 + target/riscv/cpu_cfg.h | 1 + 2 files changed, 2 insertions(+) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 4760cb2cc17f..63f553c92b00 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -178,6 +178,7 @@ const RISCVIsaExtData isa_edata_arr[] = { ISA_EXT_DATA_ENTRY(zhinx, PRIV_VERSION_1_12_0, ext_zhinx), ISA_EXT_DATA_ENTRY(zhinxmin, PRIV_VERSION_1_12_0, ext_zhinxmin), ISA_EXT_DATA_ENTRY(smaia, PRIV_VERSION_1_12_0, ext_smaia), + ISA_EXT_DATA_ENTRY(smcntrpmf, PRIV_VERSION_1_12_0, ext_smcntrpmf), ISA_EXT_DATA_ENTRY(smepmp, PRIV_VERSION_1_12_0, ext_smepmp), ISA_EXT_DATA_ENTRY(smstateen, PRIV_VERSION_1_12_0, ext_smstateen), ISA_EXT_DATA_ENTRY(ssaia, PRIV_VERSION_1_12_0, ext_ssaia), diff --git a/target/riscv/cpu_cfg.h b/target/riscv/cpu_cfg.h index fb7eebde523b..b1376beb1dab 100644 --- a/target/riscv/cpu_cfg.h +++ b/target/riscv/cpu_cfg.h @@ -74,6 +74,7 @@ struct RISCVCPUConfig { bool ext_ztso; bool ext_smstateen; bool ext_sstc; + bool ext_smcntrpmf; bool ext_svadu; bool ext_svinval; bool ext_svnapot; From patchwork Thu Jul 11 22:31:07 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Atish Kumar Patra X-Patchwork-Id: 13731163 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 46F10C3DA4A for ; Thu, 11 Jul 2024 22:34:35 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sS2KE-0000Me-WB; Thu, 11 Jul 2024 18:31:43 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sS2KB-00007k-Bn for qemu-devel@nongnu.org; Thu, 11 Jul 2024 18:31:39 -0400 Received: from mail-pl1-x635.google.com ([2607:f8b0:4864:20::635]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sS2K9-0001ZJ-Gc for qemu-devel@nongnu.org; Thu, 11 Jul 2024 18:31:39 -0400 Received: by mail-pl1-x635.google.com with SMTP id d9443c01a7336-1fb19ca5273so9716585ad.3 for ; Thu, 11 Jul 2024 15:31:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rivosinc-com.20230601.gappssmtp.com; s=20230601; t=1720737095; x=1721341895; darn=nongnu.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=her5EAPO1IPqX9VrTf46ZxZu9jmSV9v3DRrDQ/OenVY=; b=HCHfiT9GRpGpMxFb0LG/vTi+BhdXnhRiBXu2bX9mS5ImZ22IXwnwCubk204tWGggxR kD0Ow0K1zM7Y3cOFdzP9gjsQolCI+ZFfiVqCqG4069jjpnhfBOnnRpcy767+2mWZHGjT 7cIgPJJH1JH3Oieyz1enz4JqwJGKEHlZd0IyVXIR6GQXZ481bmB5Hpzub2ik+F21eYpG QhkbogDGXd7OCXRTtBoargNlxNM1a8JX7M86dovxxcnpICPE5DjqsVGGhPQdrHAjQopF 76WpTj2TmxQ4iYOqrElXeUQW8LOYhZF4hvc3/pSEZpSdwlkGAFChF8iV8TOFDCZNxDvR t33g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1720737095; x=1721341895; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=her5EAPO1IPqX9VrTf46ZxZu9jmSV9v3DRrDQ/OenVY=; b=IIOwMT/ryMEsllMuOrhhKlF6NaxFd3jcCJwD85iFm6/Dt/f0C11+QF/m2oAj8OcoAV HBI1AbN9LWzARjrnykD5N8I2xAy/3V06UyZ1XFgc7+GDfxnICjLt94IlHzJmzofCgqi0 5WmBViniSHDlM5a+0HOMuqFpCLKkL1yvsw0kfEFa75EhF9fxlKj1HVhxBbqElcFZVGPv lCDJbQ2lZaKOL40idx+ZWxvcQylnJKNpKIiJqZqs22fmHxxRipbbmG+HXiRui3QONOSO RxjvyVg6BAgmx94D97U4uyHaXNR9hs3JfJwaJ+ejdpzYrbTfC1l4qsY+HKsqK5x27I/6 6w6Q== X-Forwarded-Encrypted: i=1; AJvYcCXxcf+7uWib7VGcyU4NSwzI3F5UEUOuetDK5yeSx4dgDVNHX0I7f1ci0AkEqEJk7Vh9SGfcz1xScip3tYpATIEXRNlhlf4= X-Gm-Message-State: AOJu0YyUYyKNMU0JZcv9IBop9p4B4Hgl8UrVE443vUH058UVYjvTa+PH FF1AZhwMFlBAhtOAs8uQFlGiiodDZbL7NK8oORU7/y+9aF2w7N87KVlcJQ/DPAs= X-Google-Smtp-Source: AGHT+IHsBJk8qM+U/qH7tC4q4EYjQGUeHTnhgmyAaCRaDz8b2wS9pzILyHsUgh0pce2JfpsyHWrmjw== X-Received: by 2002:a17:902:e5cb:b0:1fb:9471:84b5 with SMTP id d9443c01a7336-1fbb6d4df2cmr77549705ad.37.1720737095072; Thu, 11 Jul 2024 15:31:35 -0700 (PDT) Received: from atishp.ba.rivosinc.com ([64.71.180.162]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-1fbb6b34ca2sm55161565ad.53.2024.07.11.15.31.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 11 Jul 2024 15:31:34 -0700 (PDT) From: Atish Patra Date: Thu, 11 Jul 2024 15:31:07 -0700 Subject: [PATCH v8 04/13] target/riscv: Add cycle & instret privilege mode filtering definitions MIME-Version: 1.0 Message-Id: <20240711-smcntrpmf_v7-v8-4-b7c38ae7b263@rivosinc.com> References: <20240711-smcntrpmf_v7-v8-0-b7c38ae7b263@rivosinc.com> In-Reply-To: <20240711-smcntrpmf_v7-v8-0-b7c38ae7b263@rivosinc.com> To: qemu-riscv@nongnu.org, qemu-devel@nongnu.org Cc: palmer@dabbelt.com, liwei1518@gmail.com, zhiwei_liu@linux.alibaba.com, bin.meng@windriver.com, dbarboza@ventanamicro.com, alistair.francis@wdc.com X-Mailer: b4 0.15-dev-13183 Received-SPF: pass client-ip=2607:f8b0:4864:20::635; envelope-from=atishp@rivosinc.com; helo=mail-pl1-x635.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Kaiwen Xue This adds the definitions for ISA extension smcntrpmf. Signed-off-by: Kaiwen Xue Reviewed-by: Daniel Henrique Barboza Reviewed-by: Alistair Francis Signed-off-by: Atish Patra --- target/riscv/cpu.h | 6 ++++++ target/riscv/cpu_bits.h | 29 +++++++++++++++++++++++++++++ 2 files changed, 35 insertions(+) diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h index 46faefd24e09..c5d289e5f4b9 100644 --- a/target/riscv/cpu.h +++ b/target/riscv/cpu.h @@ -339,6 +339,12 @@ struct CPUArchState { uint32_t mcountinhibit; + /* PMU cycle & instret privilege mode filtering */ + target_ulong mcyclecfg; + target_ulong mcyclecfgh; + target_ulong minstretcfg; + target_ulong minstretcfgh; + /* PMU counter state */ PMUCTRState pmu_ctrs[RV_MAX_MHPMCOUNTERS]; diff --git a/target/riscv/cpu_bits.h b/target/riscv/cpu_bits.h index c257c5ed7dc9..5faa817453bb 100644 --- a/target/riscv/cpu_bits.h +++ b/target/riscv/cpu_bits.h @@ -397,6 +397,10 @@ /* Machine counter-inhibit register */ #define CSR_MCOUNTINHIBIT 0x320 +/* Machine counter configuration registers */ +#define CSR_MCYCLECFG 0x321 +#define CSR_MINSTRETCFG 0x322 + #define CSR_MHPMEVENT3 0x323 #define CSR_MHPMEVENT4 0x324 #define CSR_MHPMEVENT5 0x325 @@ -427,6 +431,9 @@ #define CSR_MHPMEVENT30 0x33e #define CSR_MHPMEVENT31 0x33f +#define CSR_MCYCLECFGH 0x721 +#define CSR_MINSTRETCFGH 0x722 + #define CSR_MHPMEVENT3H 0x723 #define CSR_MHPMEVENT4H 0x724 #define CSR_MHPMEVENT5H 0x725 @@ -884,6 +891,28 @@ typedef enum RISCVException { /* PMU related bits */ #define MIE_LCOFIE (1 << IRQ_PMU_OVF) +#define MCYCLECFG_BIT_MINH BIT_ULL(62) +#define MCYCLECFGH_BIT_MINH BIT(30) +#define MCYCLECFG_BIT_SINH BIT_ULL(61) +#define MCYCLECFGH_BIT_SINH BIT(29) +#define MCYCLECFG_BIT_UINH BIT_ULL(60) +#define MCYCLECFGH_BIT_UINH BIT(28) +#define MCYCLECFG_BIT_VSINH BIT_ULL(59) +#define MCYCLECFGH_BIT_VSINH BIT(27) +#define MCYCLECFG_BIT_VUINH BIT_ULL(58) +#define MCYCLECFGH_BIT_VUINH BIT(26) + +#define MINSTRETCFG_BIT_MINH BIT_ULL(62) +#define MINSTRETCFGH_BIT_MINH BIT(30) +#define MINSTRETCFG_BIT_SINH BIT_ULL(61) +#define MINSTRETCFGH_BIT_SINH BIT(29) +#define MINSTRETCFG_BIT_UINH BIT_ULL(60) +#define MINSTRETCFGH_BIT_UINH BIT(28) +#define MINSTRETCFG_BIT_VSINH BIT_ULL(59) +#define MINSTRETCFGH_BIT_VSINH BIT(27) +#define MINSTRETCFG_BIT_VUINH BIT_ULL(58) +#define MINSTRETCFGH_BIT_VUINH BIT(26) + #define MHPMEVENT_BIT_OF BIT_ULL(63) #define MHPMEVENTH_BIT_OF BIT(31) #define MHPMEVENT_BIT_MINH BIT_ULL(62) From patchwork Thu Jul 11 22:31:08 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Atish Kumar Patra X-Patchwork-Id: 13731161 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 25361C3DA4A for ; Thu, 11 Jul 2024 22:34:32 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sS2KK-0000dy-M2; Thu, 11 Jul 2024 18:31:48 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sS2KH-0000Uk-3T for qemu-devel@nongnu.org; Thu, 11 Jul 2024 18:31:45 -0400 Received: from mail-pl1-x635.google.com ([2607:f8b0:4864:20::635]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sS2KE-0001cF-0Q for qemu-devel@nongnu.org; Thu, 11 Jul 2024 18:31:44 -0400 Received: by mail-pl1-x635.google.com with SMTP id d9443c01a7336-1fbda48631cso12444185ad.0 for ; Thu, 11 Jul 2024 15:31:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rivosinc-com.20230601.gappssmtp.com; s=20230601; t=1720737101; x=1721341901; darn=nongnu.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=c2aUGiaMNRO1teaIsDzXQAbFpXYW8NxpBsGk4ccdXZs=; b=MEmM8FkTzOQ9MTpI2IAGXPiZ5d0omJ5V6lAb2e0JrhxsHdBWnChQMiTYKKmPBtZX3/ QOVxaktwvH1X7kD7yK05F6D1d4ds9EnO4/jV82z3AxAquDf2OnvvTtdFvQKFeWJyxuxZ WQeZ5nZpibnWv8MxExAFTR+oHt0S4o3NLwTv1FvS3VejOY/Aasub35PxXLMRgv7ymYqt OOt21LCzoiMAkhyrXKKDSZWAQFq8eybRhD5yvuxepmZRpzdfhcrONRFIJQgpcwTsJ/75 zzC0QTf/iQaoEAqTJIYNjVFfaKh6mKRkzTkdPDZnavUJEY+ULRPSUumPLOba3+TcO13w SXcA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1720737101; x=1721341901; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=c2aUGiaMNRO1teaIsDzXQAbFpXYW8NxpBsGk4ccdXZs=; b=JimITFeAxhviXus3oTpEYkl4gKIZXsKf8BHPxskGr7zVM8MMA+qY05IAZE6Y5URIym PyrO4U7aJrR/dexSR6MVObKkaxqMqFXsTnHfm7zrWuE+ahyZfavlUbJ7FC1sSB8NSX+d LzRiCN8iRTDO/zhLHBJfsuhOSaEHaKaFZPucO7wvf3q6JXrhGHnSHCwJaIlEgLWEnrTY UzT+JmjtMyJZrrRAa3GGWCnY9VXcrgxTeJhwHvX/Z8FQbQdjDlrBOboYmgdFTbMHfWkF s1JyuViM3/bUR5/E/G6tmKdgxWHcVzv7a6GJb13RT84nygFlH8nPnxcGLwWhAYuw5v2Q 4iFw== X-Forwarded-Encrypted: i=1; AJvYcCVU7HW9r8PUgNENVeZpZUQSnAuptfohDHqv+C5sw+9BeW4Ekp3YPlfmSwsreQ3Hc6Z2GX7oaNE76vqgc+ZhxOmBMMzGjBg= X-Gm-Message-State: AOJu0Yw8+rELb1XWAZqnHEman9RolqJTtr71jgmw793gsU2sHSOeiuL7 QcKg55MTu7vlkNie07jtIKxivLVKRi5Y6Rs7EcCdKSO10xLedrb8cF/iVGwvbS4= X-Google-Smtp-Source: AGHT+IF9hmjCau+XFnWg/jUWbU6eSAYnpg24cxANZmH7vQxOEe9iHYv9uzCG87e0VALLF8ZYa2xhmQ== X-Received: by 2002:a17:903:2342:b0:1f4:a04e:8713 with SMTP id d9443c01a7336-1fbf0d843d7mr13633215ad.28.1720737097164; Thu, 11 Jul 2024 15:31:37 -0700 (PDT) Received: from atishp.ba.rivosinc.com ([64.71.180.162]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-1fbb6b34ca2sm55161565ad.53.2024.07.11.15.31.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 11 Jul 2024 15:31:35 -0700 (PDT) From: Atish Patra Date: Thu, 11 Jul 2024 15:31:08 -0700 Subject: [PATCH v8 05/13] target/riscv: Add cycle & instret privilege mode filtering support MIME-Version: 1.0 Message-Id: <20240711-smcntrpmf_v7-v8-5-b7c38ae7b263@rivosinc.com> References: <20240711-smcntrpmf_v7-v8-0-b7c38ae7b263@rivosinc.com> In-Reply-To: <20240711-smcntrpmf_v7-v8-0-b7c38ae7b263@rivosinc.com> To: qemu-riscv@nongnu.org, qemu-devel@nongnu.org Cc: palmer@dabbelt.com, liwei1518@gmail.com, zhiwei_liu@linux.alibaba.com, bin.meng@windriver.com, dbarboza@ventanamicro.com, alistair.francis@wdc.com X-Mailer: b4 0.15-dev-13183 Received-SPF: pass client-ip=2607:f8b0:4864:20::635; envelope-from=atishp@rivosinc.com; helo=mail-pl1-x635.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Kaiwen Xue QEMU only calculates dummy cycles and instructions, so there is no actual means to stop the icount in QEMU. Hence this patch merely adds the functionality of accessing the cfg registers, and cause no actual effects on the counting of cycle and instret counters. Signed-off-by: Atish Patra Reviewed-by: Daniel Henrique Barboza Signed-off-by: Kaiwen Xue Acked-by: Alistair Francis --- target/riscv/cpu_bits.h | 12 +++++ target/riscv/csr.c | 138 +++++++++++++++++++++++++++++++++++++++++++++++- 2 files changed, 149 insertions(+), 1 deletion(-) diff --git a/target/riscv/cpu_bits.h b/target/riscv/cpu_bits.h index 5faa817453bb..32b068f18aa5 100644 --- a/target/riscv/cpu_bits.h +++ b/target/riscv/cpu_bits.h @@ -926,6 +926,18 @@ typedef enum RISCVException { #define MHPMEVENT_BIT_VUINH BIT_ULL(58) #define MHPMEVENTH_BIT_VUINH BIT(26) +#define MHPMEVENT_FILTER_MASK (MHPMEVENT_BIT_MINH | \ + MHPMEVENT_BIT_SINH | \ + MHPMEVENT_BIT_UINH | \ + MHPMEVENT_BIT_VSINH | \ + MHPMEVENT_BIT_VUINH) + +#define MHPMEVENTH_FILTER_MASK (MHPMEVENTH_BIT_MINH | \ + MHPMEVENTH_BIT_SINH | \ + MHPMEVENTH_BIT_UINH | \ + MHPMEVENTH_BIT_VSINH | \ + MHPMEVENTH_BIT_VUINH) + #define MHPMEVENT_SSCOF_MASK _ULL(0xFFFF000000000000) #define MHPMEVENT_IDX_MASK 0xFFFFF #define MHPMEVENT_SSCOF_RESVD 16 diff --git a/target/riscv/csr.c b/target/riscv/csr.c index 3ad851707e5c..b814d176cbb8 100644 --- a/target/riscv/csr.c +++ b/target/riscv/csr.c @@ -30,7 +30,6 @@ #include "qemu/guest-random.h" #include "qapi/error.h" - /* CSR function table public API */ void riscv_get_csr_ops(int csrno, riscv_csr_operations *ops) { @@ -236,6 +235,24 @@ static RISCVException sscofpmf_32(CPURISCVState *env, int csrno) return sscofpmf(env, csrno); } +static RISCVException smcntrpmf(CPURISCVState *env, int csrno) +{ + if (!riscv_cpu_cfg(env)->ext_smcntrpmf) { + return RISCV_EXCP_ILLEGAL_INST; + } + + return RISCV_EXCP_NONE; +} + +static RISCVException smcntrpmf_32(CPURISCVState *env, int csrno) +{ + if (riscv_cpu_mxl(env) != MXL_RV32) { + return RISCV_EXCP_ILLEGAL_INST; + } + + return smcntrpmf(env, csrno); +} + static RISCVException any(CPURISCVState *env, int csrno) { return RISCV_EXCP_NONE; @@ -830,6 +847,111 @@ static RISCVException read_hpmcounterh(CPURISCVState *env, int csrno, #else /* CONFIG_USER_ONLY */ +static RISCVException read_mcyclecfg(CPURISCVState *env, int csrno, + target_ulong *val) +{ + *val = env->mcyclecfg; + return RISCV_EXCP_NONE; +} + +static RISCVException write_mcyclecfg(CPURISCVState *env, int csrno, + target_ulong val) +{ + uint64_t inh_avail_mask; + + if (riscv_cpu_mxl(env) == MXL_RV32) { + env->mcyclecfg = val; + } else { + /* Set xINH fields if priv mode supported */ + inh_avail_mask = ~MHPMEVENT_FILTER_MASK | MCYCLECFG_BIT_MINH; + inh_avail_mask |= riscv_has_ext(env, RVU) ? MCYCLECFG_BIT_UINH : 0; + inh_avail_mask |= riscv_has_ext(env, RVS) ? MCYCLECFG_BIT_SINH : 0; + inh_avail_mask |= (riscv_has_ext(env, RVH) && + riscv_has_ext(env, RVU)) ? MCYCLECFG_BIT_VUINH : 0; + inh_avail_mask |= (riscv_has_ext(env, RVH) && + riscv_has_ext(env, RVS)) ? MCYCLECFG_BIT_VSINH : 0; + env->mcyclecfg = val & inh_avail_mask; + } + + return RISCV_EXCP_NONE; +} + +static RISCVException read_mcyclecfgh(CPURISCVState *env, int csrno, + target_ulong *val) +{ + *val = env->mcyclecfgh; + return RISCV_EXCP_NONE; +} + +static RISCVException write_mcyclecfgh(CPURISCVState *env, int csrno, + target_ulong val) +{ + target_ulong inh_avail_mask = (target_ulong)(~MHPMEVENTH_FILTER_MASK | + MCYCLECFGH_BIT_MINH); + + /* Set xINH fields if priv mode supported */ + inh_avail_mask |= riscv_has_ext(env, RVU) ? MCYCLECFGH_BIT_UINH : 0; + inh_avail_mask |= riscv_has_ext(env, RVS) ? MCYCLECFGH_BIT_SINH : 0; + inh_avail_mask |= (riscv_has_ext(env, RVH) && + riscv_has_ext(env, RVU)) ? MCYCLECFGH_BIT_VUINH : 0; + inh_avail_mask |= (riscv_has_ext(env, RVH) && + riscv_has_ext(env, RVS)) ? MCYCLECFGH_BIT_VSINH : 0; + + env->mcyclecfgh = val & inh_avail_mask; + return RISCV_EXCP_NONE; +} + +static RISCVException read_minstretcfg(CPURISCVState *env, int csrno, + target_ulong *val) +{ + *val = env->minstretcfg; + return RISCV_EXCP_NONE; +} + +static RISCVException write_minstretcfg(CPURISCVState *env, int csrno, + target_ulong val) +{ + uint64_t inh_avail_mask; + + if (riscv_cpu_mxl(env) == MXL_RV32) { + env->minstretcfg = val; + } else { + inh_avail_mask = ~MHPMEVENT_FILTER_MASK | MINSTRETCFG_BIT_MINH; + inh_avail_mask |= riscv_has_ext(env, RVU) ? MINSTRETCFG_BIT_UINH : 0; + inh_avail_mask |= riscv_has_ext(env, RVS) ? MINSTRETCFG_BIT_SINH : 0; + inh_avail_mask |= (riscv_has_ext(env, RVH) && + riscv_has_ext(env, RVU)) ? MINSTRETCFG_BIT_VUINH : 0; + inh_avail_mask |= (riscv_has_ext(env, RVH) && + riscv_has_ext(env, RVS)) ? MINSTRETCFG_BIT_VSINH : 0; + env->minstretcfg = val & inh_avail_mask; + } + return RISCV_EXCP_NONE; +} + +static RISCVException read_minstretcfgh(CPURISCVState *env, int csrno, + target_ulong *val) +{ + *val = env->minstretcfgh; + return RISCV_EXCP_NONE; +} + +static RISCVException write_minstretcfgh(CPURISCVState *env, int csrno, + target_ulong val) +{ + target_ulong inh_avail_mask = (target_ulong)(~MHPMEVENTH_FILTER_MASK | + MINSTRETCFGH_BIT_MINH); + + inh_avail_mask |= riscv_has_ext(env, RVU) ? MINSTRETCFGH_BIT_UINH : 0; + inh_avail_mask |= riscv_has_ext(env, RVS) ? MINSTRETCFGH_BIT_SINH : 0; + inh_avail_mask |= (riscv_has_ext(env, RVH) && + riscv_has_ext(env, RVU)) ? MINSTRETCFGH_BIT_VUINH : 0; + inh_avail_mask |= (riscv_has_ext(env, RVH) && + riscv_has_ext(env, RVS)) ? MINSTRETCFGH_BIT_VSINH : 0; + + env->minstretcfgh = val & inh_avail_mask; + return RISCV_EXCP_NONE; +} + static RISCVException read_mhpmevent(CPURISCVState *env, int csrno, target_ulong *val) { @@ -5051,6 +5173,13 @@ riscv_csr_operations csr_ops[CSR_TABLE_SIZE] = { write_mcountinhibit, .min_priv_ver = PRIV_VERSION_1_11_0 }, + [CSR_MCYCLECFG] = { "mcyclecfg", smcntrpmf, read_mcyclecfg, + write_mcyclecfg, + .min_priv_ver = PRIV_VERSION_1_12_0 }, + [CSR_MINSTRETCFG] = { "minstretcfg", smcntrpmf, read_minstretcfg, + write_minstretcfg, + .min_priv_ver = PRIV_VERSION_1_12_0 }, + [CSR_MHPMEVENT3] = { "mhpmevent3", any, read_mhpmevent, write_mhpmevent }, [CSR_MHPMEVENT4] = { "mhpmevent4", any, read_mhpmevent, @@ -5110,6 +5239,13 @@ riscv_csr_operations csr_ops[CSR_TABLE_SIZE] = { [CSR_MHPMEVENT31] = { "mhpmevent31", any, read_mhpmevent, write_mhpmevent }, + [CSR_MCYCLECFGH] = { "mcyclecfgh", smcntrpmf_32, read_mcyclecfgh, + write_mcyclecfgh, + .min_priv_ver = PRIV_VERSION_1_12_0 }, + [CSR_MINSTRETCFGH] = { "minstretcfgh", smcntrpmf_32, read_minstretcfgh, + write_minstretcfgh, + .min_priv_ver = PRIV_VERSION_1_12_0 }, + [CSR_MHPMEVENT3H] = { "mhpmevent3h", sscofpmf_32, read_mhpmeventh, write_mhpmeventh, .min_priv_ver = PRIV_VERSION_1_12_0 }, From patchwork Thu Jul 11 22:31:09 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Atish Kumar Patra X-Patchwork-Id: 13731156 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 31090C3DA4A for ; Thu, 11 Jul 2024 22:33:44 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sS2KH-0000UQ-4U; Thu, 11 Jul 2024 18:31:45 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sS2KF-0000OW-CG for qemu-devel@nongnu.org; Thu, 11 Jul 2024 18:31:43 -0400 Received: from mail-pl1-x634.google.com ([2607:f8b0:4864:20::634]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sS2KD-0001ai-GY for qemu-devel@nongnu.org; Thu, 11 Jul 2024 18:31:43 -0400 Received: by mail-pl1-x634.google.com with SMTP id d9443c01a7336-1fbe6f83957so8388685ad.3 for ; Thu, 11 Jul 2024 15:31:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rivosinc-com.20230601.gappssmtp.com; s=20230601; t=1720737099; x=1721341899; darn=nongnu.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=lf1t63bHbu23XIWS2dR1/nNg3lRwXNctcRaYNnDIm2I=; b=naphpA/Xs9MpHiw4Bopm+nSf1gIWWEBagOskzJqKzT5upaSv2HM0bZnrf8ax8UBxhG HZsljDY7uUvMg2xxXPa2QYNOIJUJE0bakjZoTAbiZNc3dewRnVTDJ6IxqTAXSZ3x6g6K +rkH9ZVbfFrsKrROz8/aWUzsYOILXbR6Db9TLrcsS+DqEAoWACSl7TXTbtw9U9Emw0St 6IM6Xz8c3lZp1+Xcv8PlBkgterRZEjx2haKIjLRTWkDmNwWvneT9BlfsjylLEdgXGMWg sww9oq8+pE/rGR2ZLtwHRaDU+NV1Qorx/M797zA10M8nGTjhn7GC5mXE5FZPTjNt2/q7 cjrQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1720737099; x=1721341899; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=lf1t63bHbu23XIWS2dR1/nNg3lRwXNctcRaYNnDIm2I=; b=FhQiElAguYeVoYHEFBQg5LAMcNluV5pYylaaD5k7vzQpO8WxoCqbFeQzNjjrOfzJAx 1WfYQsLgdbvb/GojVWcz/ZPn2h9TfDb0zJhrBcNfOw08g67D/CdYp8ZOkkWqXVmMJlvg +HMLgK3snBotRxH1M4NqWK0TS+wOgxA4TacFpi/lat2fMFuZHS9kqENj2c1r710diSrm xTkjKLGSf5Tzt5ozodRSMAkrWBBp/Hp70JlG+sO7U/gQvbgmSqXs/aKE70v5es6uCydz oARlt3OshglOWFw+oyifbcAcmTaCTUVKelz85EoSGAt9t3m0gM3l1nNE+heLvurSL7Gd C4UA== X-Forwarded-Encrypted: i=1; AJvYcCUu+uryykmWmn01mdoZ0SIwGyOGzCfW1NHYbT9i5uzFidvcvBwAUYd2swnxaCZxjR0eq+cFHiXQ/eC08sCIjgHivQOxptI= X-Gm-Message-State: AOJu0Yw+3u+G8u7PiAWcON4G6hK/Ytqf2MCe+VWoj3Myv/80XN7S9v4r sHOW45MhICjeh5w7vffJRNvzwnBLJFN80mAaNpy9Al2lJLsPBXxknaAQGYXGNdM= X-Google-Smtp-Source: AGHT+IFRSkpeavxOw81jP1BJryBOo/9V41KKV/ZC8ei83uNk1AsxhmEDTGo3taDLpLos3SaRcTLzyQ== X-Received: by 2002:a17:902:d4d0:b0:1fb:779e:4fd0 with SMTP id d9443c01a7336-1fbb6d3d176mr94074165ad.24.1720737099073; Thu, 11 Jul 2024 15:31:39 -0700 (PDT) Received: from atishp.ba.rivosinc.com ([64.71.180.162]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-1fbb6b34ca2sm55161565ad.53.2024.07.11.15.31.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 11 Jul 2024 15:31:38 -0700 (PDT) From: Atish Patra Date: Thu, 11 Jul 2024 15:31:09 -0700 Subject: [PATCH v8 06/13] target/riscv: Only set INH fields if priv mode is available MIME-Version: 1.0 Message-Id: <20240711-smcntrpmf_v7-v8-6-b7c38ae7b263@rivosinc.com> References: <20240711-smcntrpmf_v7-v8-0-b7c38ae7b263@rivosinc.com> In-Reply-To: <20240711-smcntrpmf_v7-v8-0-b7c38ae7b263@rivosinc.com> To: qemu-riscv@nongnu.org, qemu-devel@nongnu.org Cc: palmer@dabbelt.com, liwei1518@gmail.com, zhiwei_liu@linux.alibaba.com, bin.meng@windriver.com, dbarboza@ventanamicro.com, alistair.francis@wdc.com X-Mailer: b4 0.15-dev-13183 Received-SPF: pass client-ip=2607:f8b0:4864:20::634; envelope-from=atishp@rivosinc.com; helo=mail-pl1-x634.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Currently, the INH fields are set in mhpmevent uncoditionally without checking if a particular priv mode is supported or not. Suggested-by: Alistair Francis Signed-off-by: Atish Patra Acked-by: Alistair Francis --- target/riscv/csr.c | 29 +++++++++++++++++++++++++---- 1 file changed, 25 insertions(+), 4 deletions(-) diff --git a/target/riscv/csr.c b/target/riscv/csr.c index b814d176cbb8..121996edab4b 100644 --- a/target/riscv/csr.c +++ b/target/riscv/csr.c @@ -967,13 +967,24 @@ static RISCVException write_mhpmevent(CPURISCVState *env, int csrno, { int evt_index = csrno - CSR_MCOUNTINHIBIT; uint64_t mhpmevt_val = val; - - env->mhpmevent_val[evt_index] = val; + uint64_t inh_avail_mask; if (riscv_cpu_mxl(env) == MXL_RV32) { + env->mhpmevent_val[evt_index] = val; mhpmevt_val = mhpmevt_val | ((uint64_t)env->mhpmeventh_val[evt_index] << 32); + } else { + inh_avail_mask = ~MHPMEVENT_FILTER_MASK | MHPMEVENT_BIT_MINH; + inh_avail_mask |= riscv_has_ext(env, RVU) ? MHPMEVENT_BIT_UINH : 0; + inh_avail_mask |= riscv_has_ext(env, RVS) ? MHPMEVENT_BIT_SINH : 0; + inh_avail_mask |= (riscv_has_ext(env, RVH) && + riscv_has_ext(env, RVU)) ? MHPMEVENT_BIT_VUINH : 0; + inh_avail_mask |= (riscv_has_ext(env, RVH) && + riscv_has_ext(env, RVS)) ? MHPMEVENT_BIT_VSINH : 0; + mhpmevt_val = val & inh_avail_mask; + env->mhpmevent_val[evt_index] = mhpmevt_val; } + riscv_pmu_update_event_map(env, mhpmevt_val, evt_index); return RISCV_EXCP_NONE; @@ -993,11 +1004,21 @@ static RISCVException write_mhpmeventh(CPURISCVState *env, int csrno, target_ulong val) { int evt_index = csrno - CSR_MHPMEVENT3H + 3; - uint64_t mhpmevth_val = val; + uint64_t mhpmevth_val; uint64_t mhpmevt_val = env->mhpmevent_val[evt_index]; + target_ulong inh_avail_mask = (target_ulong)(~MHPMEVENTH_FILTER_MASK | + MHPMEVENTH_BIT_MINH); + + inh_avail_mask |= riscv_has_ext(env, RVU) ? MHPMEVENTH_BIT_UINH : 0; + inh_avail_mask |= riscv_has_ext(env, RVS) ? MHPMEVENTH_BIT_SINH : 0; + inh_avail_mask |= (riscv_has_ext(env, RVH) && + riscv_has_ext(env, RVU)) ? MHPMEVENTH_BIT_VUINH : 0; + inh_avail_mask |= (riscv_has_ext(env, RVH) && + riscv_has_ext(env, RVS)) ? MHPMEVENTH_BIT_VSINH : 0; + mhpmevth_val = val & inh_avail_mask; mhpmevt_val = mhpmevt_val | (mhpmevth_val << 32); - env->mhpmeventh_val[evt_index] = val; + env->mhpmeventh_val[evt_index] = mhpmevth_val; riscv_pmu_update_event_map(env, mhpmevt_val, evt_index); From patchwork Thu Jul 11 22:31:10 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Atish Kumar Patra X-Patchwork-Id: 13731164 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 85EF5C41513 for ; Thu, 11 Jul 2024 22:34:32 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sS2KL-0000ls-GK; Thu, 11 Jul 2024 18:31:49 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sS2KH-0000Ve-Ac for qemu-devel@nongnu.org; Thu, 11 Jul 2024 18:31:45 -0400 Received: from mail-pl1-x62e.google.com ([2607:f8b0:4864:20::62e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sS2KE-0001c8-11 for qemu-devel@nongnu.org; Thu, 11 Jul 2024 18:31:45 -0400 Received: by mail-pl1-x62e.google.com with SMTP id d9443c01a7336-1fa2ea1c443so11616345ad.0 for ; Thu, 11 Jul 2024 15:31:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rivosinc-com.20230601.gappssmtp.com; s=20230601; t=1720737100; x=1721341900; darn=nongnu.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=d+QUQc3iXZEVEVIVl6NZKcjOld/tcTt/NozeZylg4fc=; b=oSobJPxC5CxNNN+VhL6bYGzKrLDB3xX5CBxq+77snOiZY1bS0q2WNtcf+IZbv9xzgy BF78UwWBa/UrlxMEqhu3OrZJre/osFxGxCK7YnxmP/LC2qxxM610/yqTJjVw1fM9eAbZ 5+wH7yGcL/lK9JSRBtYQN580FRoPOAZ/1eUSm8WHp8URfQJFSrrwXlcoewe+cZ5mMjW5 xVI4wajVyj8S1tzKCSwmEPuOKqb/i5Yc5Mma8tO2WZRxWKTQxPEg6cKVDP+JNX5sHar8 0JEmla5gtJOg6u3bgtxgLDhzcEGAjRGnOw96yA88yN1NxqfcFNv8kDUeAcsszJPEG8Fw fbwQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1720737100; x=1721341900; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=d+QUQc3iXZEVEVIVl6NZKcjOld/tcTt/NozeZylg4fc=; b=fqlp8JkQqGh7hqGgR+R7pBL4bsY4j/4uhk88uNE2BVkpQnLodVQDgWeDwcg5OtJJoQ /MkKtb3Y2EuXVei0/M8MkXaTkU6c9FDMnm+zrG093Z4F1dTfutAe5CJkf1kDWnQqpUbW m6RZf4lN85MJbZALrn/u4t0Lt25mqELtG0xD/k5e90VpXY0N0Ji/N+bwPmibLAjFekot 9V6RKgq06o5YQmPBsiCHyvAnsCILrpuodDPE2Od8hfAJZbhRcdgjtCrX9UbGRKq7OGe9 64zsx0KZ30uOFDzXKZu/8tYx8OTjS4Y/eHc6FbNu1gzQFzr8VBbo5bOfqmLRDxbTsPPO chXQ== X-Forwarded-Encrypted: i=1; AJvYcCXjq5l4lJhcdX8o4gx+ug2zXEDPihaFk8xe/FIEGsyOZg/WufV5XTODpGiarAgbhWqbxk5rxrtRw3PMYLcBcveKBgbQqLM= X-Gm-Message-State: AOJu0YzQWVUs/hwWSVXA0Z/5ut216+zQNdjLeLRYvkncSN9U4h1FP02N DbDVY/qkS2l64Hrhjug7Iz3uAsCfqf6e+xWSAG/kujk/1a3Mz7hS1XyJpP0vWMQ= X-Google-Smtp-Source: AGHT+IEOoXVJeJc7f5fcq3yboFy8ukyCvQ8GmQRBjJl/wq4/txAOf0uKXS0AI04L5sRg5Cc6HG6TLA== X-Received: by 2002:a17:902:d2d0:b0:1fb:8c35:6023 with SMTP id d9443c01a7336-1fbb6cdbdfamr94265615ad.11.1720737100595; Thu, 11 Jul 2024 15:31:40 -0700 (PDT) Received: from atishp.ba.rivosinc.com ([64.71.180.162]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-1fbb6b34ca2sm55161565ad.53.2024.07.11.15.31.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 11 Jul 2024 15:31:40 -0700 (PDT) From: Atish Patra Date: Thu, 11 Jul 2024 15:31:10 -0700 Subject: [PATCH v8 07/13] target/riscv: Implement privilege mode filtering for cycle/instret MIME-Version: 1.0 Message-Id: <20240711-smcntrpmf_v7-v8-7-b7c38ae7b263@rivosinc.com> References: <20240711-smcntrpmf_v7-v8-0-b7c38ae7b263@rivosinc.com> In-Reply-To: <20240711-smcntrpmf_v7-v8-0-b7c38ae7b263@rivosinc.com> To: qemu-riscv@nongnu.org, qemu-devel@nongnu.org Cc: palmer@dabbelt.com, liwei1518@gmail.com, zhiwei_liu@linux.alibaba.com, bin.meng@windriver.com, dbarboza@ventanamicro.com, alistair.francis@wdc.com X-Mailer: b4 0.15-dev-13183 Received-SPF: pass client-ip=2607:f8b0:4864:20::62e; envelope-from=atishp@rivosinc.com; helo=mail-pl1-x62e.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Privilege mode filtering can also be emulated for cycle/instret by tracking host_ticks/icount during each privilege mode switch. This patch implements that for both cycle/instret and mhpmcounters. The first one requires Smcntrpmf while the other one requires Sscofpmf to be enabled. The cycle/instret are still computed using host ticks when icount is not enabled. Otherwise, they are computed using raw icount which is more accurate in icount mode. Co-Developed-by: Rajnesh Kanwal Signed-off-by: Rajnesh Kanwal Reviewed-by: Daniel Henrique Barboza Acked-by: Alistair Francis Signed-off-by: Atish Patra --- target/riscv/cpu.h | 11 +++++ target/riscv/cpu_helper.c | 9 +++- target/riscv/csr.c | 117 ++++++++++++++++++++++++++++++++-------------- target/riscv/pmu.c | 92 ++++++++++++++++++++++++++++++++++++ target/riscv/pmu.h | 2 + 5 files changed, 194 insertions(+), 37 deletions(-) diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h index c5d289e5f4b9..d56d640b06be 100644 --- a/target/riscv/cpu.h +++ b/target/riscv/cpu.h @@ -158,6 +158,15 @@ typedef struct PMUCTRState { target_ulong irq_overflow_left; } PMUCTRState; +typedef struct PMUFixedCtrState { + /* Track cycle and icount for each privilege mode */ + uint64_t counter[4]; + uint64_t counter_prev[4]; + /* Track cycle and icount for each privilege mode when V = 1*/ + uint64_t counter_virt[2]; + uint64_t counter_virt_prev[2]; +} PMUFixedCtrState; + struct CPUArchState { target_ulong gpr[32]; target_ulong gprh[32]; /* 64 top bits of the 128-bit registers */ @@ -354,6 +363,8 @@ struct CPUArchState { /* PMU event selector configured values for RV32 */ target_ulong mhpmeventh_val[RV_MAX_MHPMEVENTS]; + PMUFixedCtrState pmu_fixed_ctrs[2]; + target_ulong sscratch; target_ulong mscratch; diff --git a/target/riscv/cpu_helper.c b/target/riscv/cpu_helper.c index 10d3fdaed376..395a1d914061 100644 --- a/target/riscv/cpu_helper.c +++ b/target/riscv/cpu_helper.c @@ -695,9 +695,14 @@ void riscv_cpu_set_mode(CPURISCVState *env, target_ulong newpriv, bool virt_en) { g_assert(newpriv <= PRV_M && newpriv != PRV_RESERVED); - if (icount_enabled() && newpriv != env->priv) { - riscv_itrigger_update_priv(env); + if (newpriv != env->priv || env->virt_enabled != virt_en) { + if (icount_enabled()) { + riscv_itrigger_update_priv(env); + } + + riscv_pmu_update_fixed_ctrs(env, newpriv, virt_en); } + /* tlb_flush is unnecessary as mode is contained in mmu_idx */ env->priv = newpriv; env->xl = cpu_recompute_xl(env); diff --git a/target/riscv/csr.c b/target/riscv/csr.c index 121996edab4b..53f1a7ff00db 100644 --- a/target/riscv/csr.c +++ b/target/riscv/csr.c @@ -787,36 +787,16 @@ static RISCVException write_vcsr(CPURISCVState *env, int csrno, return RISCV_EXCP_NONE; } +#if defined(CONFIG_USER_ONLY) /* User Timers and Counters */ -static target_ulong get_ticks(bool shift, bool instructions) +static target_ulong get_ticks(bool shift) { - int64_t val; - target_ulong result; - -#if !defined(CONFIG_USER_ONLY) - if (icount_enabled()) { - if (instructions) { - val = icount_get_raw(); - } else { - val = icount_get(); - } - } else { - val = cpu_get_host_ticks(); - } -#else - val = cpu_get_host_ticks(); -#endif - - if (shift) { - result = val >> 32; - } else { - result = val; - } + int64_t val = cpu_get_host_ticks(); + target_ulong result = shift ? val >> 32 : val; return result; } -#if defined(CONFIG_USER_ONLY) static RISCVException read_time(CPURISCVState *env, int csrno, target_ulong *val) { @@ -834,14 +814,14 @@ static RISCVException read_timeh(CPURISCVState *env, int csrno, static RISCVException read_hpmcounter(CPURISCVState *env, int csrno, target_ulong *val) { - *val = get_ticks(false, (csrno == CSR_INSTRET)); + *val = get_ticks(false); return RISCV_EXCP_NONE; } static RISCVException read_hpmcounterh(CPURISCVState *env, int csrno, target_ulong *val) { - *val = get_ticks(true, (csrno == CSR_INSTRETH)); + *val = get_ticks(true); return RISCV_EXCP_NONE; } @@ -1025,17 +1005,82 @@ static RISCVException write_mhpmeventh(CPURISCVState *env, int csrno, return RISCV_EXCP_NONE; } +static target_ulong riscv_pmu_ctr_get_fixed_counters_val(CPURISCVState *env, + int counter_idx, + bool upper_half) +{ + int inst = riscv_pmu_ctr_monitor_instructions(env, counter_idx); + uint64_t *counter_arr_virt = env->pmu_fixed_ctrs[inst].counter_virt; + uint64_t *counter_arr = env->pmu_fixed_ctrs[inst].counter; + target_ulong result = 0; + uint64_t curr_val = 0; + uint64_t cfg_val = 0; + + if (counter_idx == 0) { + cfg_val = upper_half ? ((uint64_t)env->mcyclecfgh << 32) : + env->mcyclecfg; + } else if (counter_idx == 2) { + cfg_val = upper_half ? ((uint64_t)env->minstretcfgh << 32) : + env->minstretcfg; + } else { + cfg_val = upper_half ? + ((uint64_t)env->mhpmeventh_val[counter_idx] << 32) : + env->mhpmevent_val[counter_idx]; + cfg_val &= MHPMEVENT_FILTER_MASK; + } + + if (!cfg_val) { + if (icount_enabled()) { + curr_val = inst ? icount_get_raw() : icount_get(); + } else { + curr_val = cpu_get_host_ticks(); + } + + goto done; + } + + if (!(cfg_val & MCYCLECFG_BIT_MINH)) { + curr_val += counter_arr[PRV_M]; + } + + if (!(cfg_val & MCYCLECFG_BIT_SINH)) { + curr_val += counter_arr[PRV_S]; + } + + if (!(cfg_val & MCYCLECFG_BIT_UINH)) { + curr_val += counter_arr[PRV_U]; + } + + if (!(cfg_val & MCYCLECFG_BIT_VSINH)) { + curr_val += counter_arr_virt[PRV_S]; + } + + if (!(cfg_val & MCYCLECFG_BIT_VUINH)) { + curr_val += counter_arr_virt[PRV_U]; + } + +done: + if (riscv_cpu_mxl(env) == MXL_RV32) { + result = upper_half ? curr_val >> 32 : curr_val; + } else { + result = curr_val; + } + + return result; +} + static RISCVException write_mhpmcounter(CPURISCVState *env, int csrno, target_ulong val) { int ctr_idx = csrno - CSR_MCYCLE; PMUCTRState *counter = &env->pmu_ctrs[ctr_idx]; uint64_t mhpmctr_val = val; - bool instr = riscv_pmu_ctr_monitor_instructions(env, ctr_idx); counter->mhpmcounter_val = val; - if (riscv_pmu_ctr_monitor_cycles(env, ctr_idx) || instr) { - counter->mhpmcounter_prev = get_ticks(false, instr); + if (riscv_pmu_ctr_monitor_cycles(env, ctr_idx) || + riscv_pmu_ctr_monitor_instructions(env, ctr_idx)) { + counter->mhpmcounter_prev = riscv_pmu_ctr_get_fixed_counters_val(env, + ctr_idx, false); if (ctr_idx > 2) { if (riscv_cpu_mxl(env) == MXL_RV32) { mhpmctr_val = mhpmctr_val | @@ -1058,12 +1103,13 @@ static RISCVException write_mhpmcounterh(CPURISCVState *env, int csrno, PMUCTRState *counter = &env->pmu_ctrs[ctr_idx]; uint64_t mhpmctr_val = counter->mhpmcounter_val; uint64_t mhpmctrh_val = val; - bool instr = riscv_pmu_ctr_monitor_instructions(env, ctr_idx); counter->mhpmcounterh_val = val; mhpmctr_val = mhpmctr_val | (mhpmctrh_val << 32); - if (riscv_pmu_ctr_monitor_cycles(env, ctr_idx) || instr) { - counter->mhpmcounterh_prev = get_ticks(true, instr); + if (riscv_pmu_ctr_monitor_cycles(env, ctr_idx) || + riscv_pmu_ctr_monitor_instructions(env, ctr_idx)) { + counter->mhpmcounterh_prev = riscv_pmu_ctr_get_fixed_counters_val(env, + ctr_idx, true); if (ctr_idx > 2) { riscv_pmu_setup_timer(env, mhpmctr_val, ctr_idx); } @@ -1082,7 +1128,6 @@ static RISCVException riscv_pmu_read_ctr(CPURISCVState *env, target_ulong *val, counter->mhpmcounter_prev; target_ulong ctr_val = upper_half ? counter->mhpmcounterh_val : counter->mhpmcounter_val; - bool instr = riscv_pmu_ctr_monitor_instructions(env, ctr_idx); if (get_field(env->mcountinhibit, BIT(ctr_idx))) { /* @@ -1103,8 +1148,10 @@ static RISCVException riscv_pmu_read_ctr(CPURISCVState *env, target_ulong *val, * The kernel computes the perf delta by subtracting the current value from * the value it initialized previously (ctr_val). */ - if (riscv_pmu_ctr_monitor_cycles(env, ctr_idx) || instr) { - *val = get_ticks(upper_half, instr) - ctr_prev + ctr_val; + if (riscv_pmu_ctr_monitor_cycles(env, ctr_idx) || + riscv_pmu_ctr_monitor_instructions(env, ctr_idx)) { + *val = riscv_pmu_ctr_get_fixed_counters_val(env, ctr_idx, upper_half) - + ctr_prev + ctr_val; } else { *val = ctr_val; } diff --git a/target/riscv/pmu.c b/target/riscv/pmu.c index 0e7d58b8a5c2..ac648cff8d7c 100644 --- a/target/riscv/pmu.c +++ b/target/riscv/pmu.c @@ -19,6 +19,7 @@ #include "qemu/osdep.h" #include "qemu/log.h" #include "qemu/error-report.h" +#include "qemu/timer.h" #include "cpu.h" #include "pmu.h" #include "sysemu/cpu-timers.h" @@ -176,6 +177,97 @@ static int riscv_pmu_incr_ctr_rv64(RISCVCPU *cpu, uint32_t ctr_idx) return 0; } +/* + * Information needed to update counters: + * new_priv, new_virt: To correctly save starting snapshot for the newly + * started mode. Look at array being indexed with newprv. + * old_priv, old_virt: To correctly select previous snapshot for old priv + * and compute delta. Also to select correct counter + * to inc. Look at arrays being indexed with env->priv. + * + * To avoid the complexity of calling this function, we assume that + * env->priv and env->virt_enabled contain old priv and old virt and + * new priv and new virt values are passed in as arguments. + */ +static void riscv_pmu_icount_update_priv(CPURISCVState *env, + target_ulong newpriv, bool new_virt) +{ + uint64_t *snapshot_prev, *snapshot_new; + uint64_t current_icount; + uint64_t *counter_arr; + uint64_t delta; + + if (icount_enabled()) { + current_icount = icount_get_raw(); + } else { + current_icount = cpu_get_host_ticks(); + } + + if (env->virt_enabled) { + counter_arr = env->pmu_fixed_ctrs[1].counter_virt; + snapshot_prev = env->pmu_fixed_ctrs[1].counter_virt_prev; + } else { + counter_arr = env->pmu_fixed_ctrs[1].counter; + snapshot_prev = env->pmu_fixed_ctrs[1].counter_prev; + } + + if (new_virt) { + snapshot_new = env->pmu_fixed_ctrs[1].counter_virt_prev; + } else { + snapshot_new = env->pmu_fixed_ctrs[1].counter_prev; + } + + /* + * new_priv can be same as env->priv. So we need to calculate + * delta first before updating snapshot_new[new_priv]. + */ + delta = current_icount - snapshot_prev[env->priv]; + snapshot_new[newpriv] = current_icount; + + counter_arr[env->priv] += delta; +} + +static void riscv_pmu_cycle_update_priv(CPURISCVState *env, + target_ulong newpriv, bool new_virt) +{ + uint64_t *snapshot_prev, *snapshot_new; + uint64_t current_ticks; + uint64_t *counter_arr; + uint64_t delta; + + if (icount_enabled()) { + current_ticks = icount_get(); + } else { + current_ticks = cpu_get_host_ticks(); + } + + if (env->virt_enabled) { + counter_arr = env->pmu_fixed_ctrs[0].counter_virt; + snapshot_prev = env->pmu_fixed_ctrs[0].counter_virt_prev; + } else { + counter_arr = env->pmu_fixed_ctrs[0].counter; + snapshot_prev = env->pmu_fixed_ctrs[0].counter_prev; + } + + if (new_virt) { + snapshot_new = env->pmu_fixed_ctrs[0].counter_virt_prev; + } else { + snapshot_new = env->pmu_fixed_ctrs[0].counter_prev; + } + + delta = current_ticks - snapshot_prev[env->priv]; + snapshot_new[newpriv] = current_ticks; + + counter_arr[env->priv] += delta; +} + +void riscv_pmu_update_fixed_ctrs(CPURISCVState *env, target_ulong newpriv, + bool new_virt) +{ + riscv_pmu_cycle_update_priv(env, newpriv, new_virt); + riscv_pmu_icount_update_priv(env, newpriv, new_virt); +} + int riscv_pmu_incr_ctr(RISCVCPU *cpu, enum riscv_pmu_event_idx event_idx) { uint32_t ctr_idx; diff --git a/target/riscv/pmu.h b/target/riscv/pmu.h index 7c0ad661e050..ca40cfeed647 100644 --- a/target/riscv/pmu.h +++ b/target/riscv/pmu.h @@ -34,5 +34,7 @@ int riscv_pmu_incr_ctr(RISCVCPU *cpu, enum riscv_pmu_event_idx event_idx); void riscv_pmu_generate_fdt_node(void *fdt, uint32_t cmask, char *pmu_name); int riscv_pmu_setup_timer(CPURISCVState *env, uint64_t value, uint32_t ctr_idx); +void riscv_pmu_update_fixed_ctrs(CPURISCVState *env, target_ulong newpriv, + bool new_virt); #endif /* RISCV_PMU_H */ From patchwork Thu Jul 11 22:31:11 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Atish Kumar Patra X-Patchwork-Id: 13731160 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 8DC23C3DA45 for ; Thu, 11 Jul 2024 22:34:14 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sS2KK-0000hp-Kv; Thu, 11 Jul 2024 18:31:48 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sS2KI-0000Zo-92 for qemu-devel@nongnu.org; Thu, 11 Jul 2024 18:31:46 -0400 Received: from mail-pl1-x631.google.com ([2607:f8b0:4864:20::631]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sS2KG-0001d4-BB for qemu-devel@nongnu.org; Thu, 11 Jul 2024 18:31:46 -0400 Received: by mail-pl1-x631.google.com with SMTP id d9443c01a7336-1fb472eacf4so9104605ad.1 for ; Thu, 11 Jul 2024 15:31:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rivosinc-com.20230601.gappssmtp.com; s=20230601; t=1720737103; x=1721341903; darn=nongnu.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=BW5+TxeQ3j3oHVi+BKnOm1Q4Ol2XxFfjITvZ7dSErUo=; b=phzZ6RjUciSySo+rMQlBqyDp6uXxtXV5wuIt5DnhOCtpp2dSQgJ3EGSE3+MeVArgXi ocOfnNvbjzz85mLufGU7OWUXUkOkUY+LGArouizZZxQZ/tz3WvmZGXVdljcKDJaWAwUs IEy/zGVaOL18mGYl84SpIWl7YWid2Wv7Ls0z19YoQvIriPS9QBFyAIpNkS2wzNg+M9+V 4nY+5RHQgDSsxewvT5HpL3khuQheipM95zciXLO6FOG67Oy9G304//iyz1+yCrO6SOuN qvpwFjfgLDljdonh3mThVKKAb3rBICjcU4Z6wPBoTuFJ/er35AEUY44J6bl4qff2ccth 99ew== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1720737103; x=1721341903; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=BW5+TxeQ3j3oHVi+BKnOm1Q4Ol2XxFfjITvZ7dSErUo=; b=kdJ3HW24wut4IntbQIfeFWJdGey+ga3SzwJbTWHmpyt2btvgZ/3PFHJ6Mdrq7Bh0QX cQxDRYPiOI0OX1mvgfMo4MlscH0iZ5giufMRxVD8vy5861KM6H1RumGsDw/Z78Av1qkA OyRHlRFMnhfLikYyu8nYYqwaQQ4c9XGz3OyMt9ijknzljPRW0qBl8b3iGhq3WuUwNTcE KuWwFw4nQabgeffUgyfyT/aBz7MWTLm6i0TWdZ5V1M22DHrp8JjNcsB4oRe/4InQbAtz iQuD7A+yd9zNR7nrVpEIJqIcyPW5f+4SqTIfeTxrqGfAKKq1oQ4JP38sxIoEITBvj5tP AI4g== X-Forwarded-Encrypted: i=1; AJvYcCUSBfzm7uEA3GUEDS6opzOCzZpuDI96NXV35J118I0xvNRgEkWGKBoGyKqjdxisxtvFjRwgd6EZci/LAs5meMfpEXK5gjY= X-Gm-Message-State: AOJu0YxxMTwmVHZZGdWZeQJRAvk55zJfGSNG8fCttrWmXwH8DvSRyrjZ ViWURY13iUfyQzT+hFnlOULlMH2hXgEyUZvTD2AHnlyvqNsd10ltjYP6QDPT2uA= X-Google-Smtp-Source: AGHT+IHOrYKTeUloSRwMvcoSCH4k/m7NJQwDYvZ03jOgWvmyL1/tJWRS7wgrCQJ3SvEdFh5uvcc+YA== X-Received: by 2002:a17:903:1cc:b0:1fb:9a61:6fe with SMTP id d9443c01a7336-1fbb6edf5d2mr69698785ad.58.1720737103105; Thu, 11 Jul 2024 15:31:43 -0700 (PDT) Received: from atishp.ba.rivosinc.com ([64.71.180.162]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-1fbb6b34ca2sm55161565ad.53.2024.07.11.15.31.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 11 Jul 2024 15:31:41 -0700 (PDT) From: Atish Patra Date: Thu, 11 Jul 2024 15:31:11 -0700 Subject: [PATCH v8 08/13] target/riscv: Save counter values during countinhibit update MIME-Version: 1.0 Message-Id: <20240711-smcntrpmf_v7-v8-8-b7c38ae7b263@rivosinc.com> References: <20240711-smcntrpmf_v7-v8-0-b7c38ae7b263@rivosinc.com> In-Reply-To: <20240711-smcntrpmf_v7-v8-0-b7c38ae7b263@rivosinc.com> To: qemu-riscv@nongnu.org, qemu-devel@nongnu.org Cc: palmer@dabbelt.com, liwei1518@gmail.com, zhiwei_liu@linux.alibaba.com, bin.meng@windriver.com, dbarboza@ventanamicro.com, alistair.francis@wdc.com X-Mailer: b4 0.15-dev-13183 Received-SPF: pass client-ip=2607:f8b0:4864:20::631; envelope-from=atishp@rivosinc.com; helo=mail-pl1-x631.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Currently, if a counter monitoring cycle/instret is stopped via mcountinhibit we just update the state while the value is saved during the next read. This is not accurate as the read may happen many cycles after the counter is stopped. Ideally, the read should return the value saved when the counter is stopped. Thus, save the value of the counter during the inhibit update operation and return that value during the read if corresponding bit in mcountihibit is set. Acked-by: Alistair Francis Reviewed-by: Daniel Henrique Barboza Signed-off-by: Atish Patra --- target/riscv/cpu.h | 1 - target/riscv/csr.c | 34 ++++++++++++++++++++++------------ target/riscv/machine.c | 5 ++--- 3 files changed, 24 insertions(+), 16 deletions(-) diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h index d56d640b06be..91fe2a46ba35 100644 --- a/target/riscv/cpu.h +++ b/target/riscv/cpu.h @@ -153,7 +153,6 @@ typedef struct PMUCTRState { target_ulong mhpmcounter_prev; /* Snapshort value of a counter in RV32 */ target_ulong mhpmcounterh_prev; - bool started; /* Value beyond UINT32_MAX/UINT64_MAX before overflow interrupt trigger */ target_ulong irq_overflow_left; } PMUCTRState; diff --git a/target/riscv/csr.c b/target/riscv/csr.c index 53f1a7ff00db..5e76ad5a350c 100644 --- a/target/riscv/csr.c +++ b/target/riscv/csr.c @@ -1131,17 +1131,11 @@ static RISCVException riscv_pmu_read_ctr(CPURISCVState *env, target_ulong *val, if (get_field(env->mcountinhibit, BIT(ctr_idx))) { /* - * Counter should not increment if inhibit bit is set. We can't really - * stop the icount counting. Just return the counter value written by - * the supervisor to indicate that counter was not incremented. + * Counter should not increment if inhibit bit is set. Just return the + * current counter value. */ - if (!counter->started) { - *val = ctr_val; - return RISCV_EXCP_NONE; - } else { - /* Mark that the counter has been stopped */ - counter->started = false; - } + *val = ctr_val; + return RISCV_EXCP_NONE; } /* @@ -2183,9 +2177,25 @@ static RISCVException write_mcountinhibit(CPURISCVState *env, int csrno, /* Check if any other counter is also monitoring cycles/instructions */ for (cidx = 0; cidx < RV_MAX_MHPMCOUNTERS; cidx++) { - if (!get_field(env->mcountinhibit, BIT(cidx))) { counter = &env->pmu_ctrs[cidx]; - counter->started = true; + if (get_field(env->mcountinhibit, BIT(cidx)) && (val & BIT(cidx))) { + /* + * Update the counter value for cycle/instret as we can't stop the + * host ticks. But we should show the current value at this moment. + */ + if (riscv_pmu_ctr_monitor_cycles(env, cidx) || + riscv_pmu_ctr_monitor_instructions(env, cidx)) { + counter->mhpmcounter_val = + riscv_pmu_ctr_get_fixed_counters_val(env, cidx, false) - + counter->mhpmcounter_prev + + counter->mhpmcounter_val; + if (riscv_cpu_mxl(env) == MXL_RV32) { + counter->mhpmcounterh_val = + riscv_pmu_ctr_get_fixed_counters_val(env, cidx, true) - + counter->mhpmcounterh_prev + + counter->mhpmcounterh_val; + } + } } } diff --git a/target/riscv/machine.c b/target/riscv/machine.c index 76f2150f78b5..492c2c6d9d79 100644 --- a/target/riscv/machine.c +++ b/target/riscv/machine.c @@ -320,15 +320,14 @@ static bool pmu_needed(void *opaque) static const VMStateDescription vmstate_pmu_ctr_state = { .name = "cpu/pmu", - .version_id = 1, - .minimum_version_id = 1, + .version_id = 2, + .minimum_version_id = 2, .needed = pmu_needed, .fields = (const VMStateField[]) { VMSTATE_UINTTL(mhpmcounter_val, PMUCTRState), VMSTATE_UINTTL(mhpmcounterh_val, PMUCTRState), VMSTATE_UINTTL(mhpmcounter_prev, PMUCTRState), VMSTATE_UINTTL(mhpmcounterh_prev, PMUCTRState), - VMSTATE_BOOL(started, PMUCTRState), VMSTATE_END_OF_LIST() } }; From patchwork Thu Jul 11 22:31:12 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Atish Kumar Patra X-Patchwork-Id: 13731151 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 65804C3DA45 for ; Thu, 11 Jul 2024 22:33:20 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sS2KN-0000vK-Of; Thu, 11 Jul 2024 18:31:51 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sS2KL-0000ns-Rl for qemu-devel@nongnu.org; Thu, 11 Jul 2024 18:31:49 -0400 Received: from mail-pl1-x636.google.com ([2607:f8b0:4864:20::636]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sS2KI-0001e1-3U for qemu-devel@nongnu.org; Thu, 11 Jul 2024 18:31:48 -0400 Received: by mail-pl1-x636.google.com with SMTP id d9443c01a7336-1fb4a807708so13275455ad.2 for ; Thu, 11 Jul 2024 15:31:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rivosinc-com.20230601.gappssmtp.com; s=20230601; t=1720737105; x=1721341905; darn=nongnu.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=ppUbuQ8Wa7YiIwlG2SqWh54KeHcuFzLEgO4lTPZv86E=; b=0zmcfBZBqXabwEL2qx4VUb7LX5t9wjq/n6zeDP1AkPxmRqxoctsXxMnAto+R2mMBwl WZ+F/Rzet4vS1Pn3NfFyClRLI5d9YeBSDK+JmOneK7VHHNpjozjzUgSj0w5Y0DmN4eEx /J77lhdFAwKUNacVx3JqeaYsEhxkh0WA1koV+QF+O1QzKoY/e4NiIOpxVfa8lgXRZuIe /DOiGcw48KqH5WPnt2nMZ3nPX5q+yM59OFmE+XEEL+bfQdxrcNAB6X6XsbqJeNvWjOLn GEawKf+ulnZvCnCvOiJ/m3ffnumOLvPQfQoFA9oPoLWYelrdLRsDQkh/54HLM1aEFwnE bOSw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1720737105; x=1721341905; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=ppUbuQ8Wa7YiIwlG2SqWh54KeHcuFzLEgO4lTPZv86E=; b=ub/YwtLXF/uf6P6RR9oD7O+uFfzuKpjyW74PqDrwcPUA8EBPAMq1JdIN9TE2lELAOu 8xQGNHWK0SCIqmeX/YFnNE5t/7L39umap2dUvqpYwNjr+REn/u0Sl4Aggp9796UR++dL 84uiUGa7tUKfCXjqP41dryfbTBqAPxs8q4t7pMGOBjudPDJ2OmtSQh/fDpCtTCxtSTdG tWoSWB8QSR9nxlJugDU7NQ6uVA2R4a8PsSpHNbECrk0bF01A1yqPoSekXuuDFWF8Xt9C qDGx3ON3taT+AfTfzf2hD/NRn9Vl/3Itxd9vqozJTZ+3ECZYhD9eZyXxI9LmmPAkQ+96 a/vQ== X-Forwarded-Encrypted: i=1; AJvYcCUN0Pwh1SgqcWhgojK4hJ3hGH03xB/hmzSbgW6YlbfvdyeIDZ3oTSD5rpWv2t3AxgkCB8dvp8TUpmWAoazm+mzcRvdKtuI= X-Gm-Message-State: AOJu0YwHAm4MaTfHrXqHPoLx8KbFbt+RzSkqfmIWfEx1/O4PIriXZS3o RKEa3MWdbqkqzLLSQMI6Cwt0ejIZB+3diq5VDjlIjEpP6XsCUKHGEL1uYPpD7jI= X-Google-Smtp-Source: AGHT+IHNOTlj53A7LFSWQMvggfVxGQyUWJYi0JIa0Zxs24tF4+OH52GfIPpvYds8esxkc1H9ooi9yw== X-Received: by 2002:a17:903:22ce:b0:1f7:19b7:98bd with SMTP id d9443c01a7336-1fbb6d23ffamr98786465ad.6.1720737104885; Thu, 11 Jul 2024 15:31:44 -0700 (PDT) Received: from atishp.ba.rivosinc.com ([64.71.180.162]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-1fbb6b34ca2sm55161565ad.53.2024.07.11.15.31.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 11 Jul 2024 15:31:43 -0700 (PDT) From: Atish Patra Date: Thu, 11 Jul 2024 15:31:12 -0700 Subject: [PATCH v8 09/13] target/riscv: Enforce WARL behavior for scounteren/hcounteren MIME-Version: 1.0 Message-Id: <20240711-smcntrpmf_v7-v8-9-b7c38ae7b263@rivosinc.com> References: <20240711-smcntrpmf_v7-v8-0-b7c38ae7b263@rivosinc.com> In-Reply-To: <20240711-smcntrpmf_v7-v8-0-b7c38ae7b263@rivosinc.com> To: qemu-riscv@nongnu.org, qemu-devel@nongnu.org Cc: palmer@dabbelt.com, liwei1518@gmail.com, zhiwei_liu@linux.alibaba.com, bin.meng@windriver.com, dbarboza@ventanamicro.com, alistair.francis@wdc.com X-Mailer: b4 0.15-dev-13183 Received-SPF: pass client-ip=2607:f8b0:4864:20::636; envelope-from=atishp@rivosinc.com; helo=mail-pl1-x636.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org scounteren/hcountern are also WARL registers similar to mcountern. Only set the bits for the available counters during the write to preserve the WARL behavior. Signed-off-by: Atish Patra Reviewed-by: Daniel Henrique Barboza Reviewed-by: Alistair Francis --- target/riscv/csr.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/target/riscv/csr.c b/target/riscv/csr.c index 5e76ad5a350c..5ef641918120 100644 --- a/target/riscv/csr.c +++ b/target/riscv/csr.c @@ -3063,7 +3063,11 @@ static RISCVException read_scounteren(CPURISCVState *env, int csrno, static RISCVException write_scounteren(CPURISCVState *env, int csrno, target_ulong val) { - env->scounteren = val; + RISCVCPU *cpu = env_archcpu(env); + + /* WARL register - disable unavailable counters */ + env->scounteren = val & (cpu->pmu_avail_ctrs | COUNTEREN_CY | COUNTEREN_TM | + COUNTEREN_IR); return RISCV_EXCP_NONE; } @@ -3722,7 +3726,11 @@ static RISCVException read_hcounteren(CPURISCVState *env, int csrno, static RISCVException write_hcounteren(CPURISCVState *env, int csrno, target_ulong val) { - env->hcounteren = val; + RISCVCPU *cpu = env_archcpu(env); + + /* WARL register - disable unavailable counters */ + env->hcounteren = val & (cpu->pmu_avail_ctrs | COUNTEREN_CY | COUNTEREN_TM | + COUNTEREN_IR); return RISCV_EXCP_NONE; } From patchwork Thu Jul 11 22:31:13 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Atish Kumar Patra X-Patchwork-Id: 13731162 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 93142C3DA4D for ; Thu, 11 Jul 2024 22:34:32 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sS2Ka-0001kK-Sk; Thu, 11 Jul 2024 18:32:04 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sS2KY-0001dU-NR for qemu-devel@nongnu.org; Thu, 11 Jul 2024 18:32:02 -0400 Received: from mail-pl1-x630.google.com ([2607:f8b0:4864:20::630]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sS2KK-0001eR-KJ for qemu-devel@nongnu.org; Thu, 11 Jul 2024 18:32:02 -0400 Received: by mail-pl1-x630.google.com with SMTP id d9443c01a7336-1fb53bfb6easo10581405ad.2 for ; Thu, 11 Jul 2024 15:31:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rivosinc-com.20230601.gappssmtp.com; s=20230601; t=1720737106; x=1721341906; darn=nongnu.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=A3cArR5WRmWK1k/DcuOegvGiYxXTXfx2ryu99Fjf2H4=; b=InmEqWY4z3RdgZKc56iF6QLBoMismQpOaZBeqInwww0VZGsid7ZqR8zOb1H041PzlK nZiexQlrzUcintB2KEITVxCJAiW5S6rCooRttBoqwsodYEEkyDVp6eETqt3eHgHlpJZe b4cJxIQ+w4YdxD1o8bCMKfWbvEQGF8OfNMzJ/JRRinFNUJh0dMo+hM14NMSTCOe5Lp5h neHE07eZkvg4BcJht87U0azzdC4Np4G0J5W8dIjlMsew6pgQW13fYvCY98WplOQc/K1F Cjlf3sOFP+ubZuxuxumde5PBq3ZEafJvRlbJ2WONH6hllgatO3iGqbM1Yl+/idGkyPTS USFA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1720737106; x=1721341906; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=A3cArR5WRmWK1k/DcuOegvGiYxXTXfx2ryu99Fjf2H4=; b=b/pA01xFaWc3O4reNI17JD/nBcG1rDe+2j0UYoNMuEo1K9FuRXTSV9rAr+gk4OW+wB R9I744w4sffFejWGDcosHEg5+r6BA7iODTU8kBf5Y2kN2p2HAIRPMUxxMSEsCyl5P92r tbVQkMEGQI3ChsKlW1kmYA4IRPkGkMk3Vf5PFE3phSb6FdPbbKG7jJqcwtReOXmmGSBL yorz+SejFdEmXt4UOKJQE6socaf62hRSLFfoBA6CqlrQJoLVf9RJYAbZrZHk7LzAY3LY ruHoGyEs+3gvcQ0F9/VkJgHHvBpYDpS2h6uuOpmFCCuYmwoQoHgfwlGakEDm+1a/84OD uDxA== X-Forwarded-Encrypted: i=1; AJvYcCXIIPqqWrfE+RLGLVTeszA6DD1ONqc2MWJGNERdXCTRyzNCmMa36i07/mUvhqNJ6lgnz4alKIn+VplH5AG3BMhQKVwERT8= X-Gm-Message-State: AOJu0YxWUU5h/vUtvnq+J/7x63yjih+OQmvX4LFb09OPc//nslBA566i d4jMX431HTa2G8NBQ0cbmi6F51BsXCjZAoGN/koejYDuSiPiATqPRaMsloQ3sOk= X-Google-Smtp-Source: AGHT+IGLnCReZd+vBiltlGXAwSbb53RogOi0iOxNrgwbCTCvXUBFfQFT5YK89pyLXaZUKJ+T8r6MvA== X-Received: by 2002:a17:902:ce85:b0:1fb:5b83:48e4 with SMTP id d9443c01a7336-1fbb6ce52e0mr86611055ad.9.1720737106133; Thu, 11 Jul 2024 15:31:46 -0700 (PDT) Received: from atishp.ba.rivosinc.com ([64.71.180.162]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-1fbb6b34ca2sm55161565ad.53.2024.07.11.15.31.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 11 Jul 2024 15:31:45 -0700 (PDT) From: Atish Patra Date: Thu, 11 Jul 2024 15:31:13 -0700 Subject: [PATCH v8 10/13] target/riscv: Start counters from both mhpmcounter and mcountinhibit MIME-Version: 1.0 Message-Id: <20240711-smcntrpmf_v7-v8-10-b7c38ae7b263@rivosinc.com> References: <20240711-smcntrpmf_v7-v8-0-b7c38ae7b263@rivosinc.com> In-Reply-To: <20240711-smcntrpmf_v7-v8-0-b7c38ae7b263@rivosinc.com> To: qemu-riscv@nongnu.org, qemu-devel@nongnu.org Cc: palmer@dabbelt.com, liwei1518@gmail.com, zhiwei_liu@linux.alibaba.com, bin.meng@windriver.com, dbarboza@ventanamicro.com, alistair.francis@wdc.com X-Mailer: b4 0.15-dev-13183 Received-SPF: pass client-ip=2607:f8b0:4864:20::630; envelope-from=atishp@rivosinc.com; helo=mail-pl1-x630.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Rajnesh Kanwal Currently we start timer counter from write_mhpmcounter path only without checking for mcountinhibit bit. This changes adds mcountinhibit check and also programs the counter from write_mcountinhibit as well. When a counter is stopped using mcountinhibit we simply update the value of the counter based on current host ticks and save it for future reads. We don't need to disable running timer as pmu_timer_trigger_irq will discard the interrupt if the counter has been inhibited. Signed-off-by: Rajnesh Kanwal Reviewed-by: Daniel Henrique Barboza --- target/riscv/csr.c | 75 ++++++++++++++++++++++++++++++++++++++---------------- target/riscv/pmu.c | 3 +-- 2 files changed, 54 insertions(+), 24 deletions(-) diff --git a/target/riscv/csr.c b/target/riscv/csr.c index 5ef641918120..ff06276192dd 100644 --- a/target/riscv/csr.c +++ b/target/riscv/csr.c @@ -1077,8 +1077,9 @@ static RISCVException write_mhpmcounter(CPURISCVState *env, int csrno, uint64_t mhpmctr_val = val; counter->mhpmcounter_val = val; - if (riscv_pmu_ctr_monitor_cycles(env, ctr_idx) || - riscv_pmu_ctr_monitor_instructions(env, ctr_idx)) { + if (!get_field(env->mcountinhibit, BIT(ctr_idx)) && + (riscv_pmu_ctr_monitor_cycles(env, ctr_idx) || + riscv_pmu_ctr_monitor_instructions(env, ctr_idx))) { counter->mhpmcounter_prev = riscv_pmu_ctr_get_fixed_counters_val(env, ctr_idx, false); if (ctr_idx > 2) { @@ -1106,8 +1107,9 @@ static RISCVException write_mhpmcounterh(CPURISCVState *env, int csrno, counter->mhpmcounterh_val = val; mhpmctr_val = mhpmctr_val | (mhpmctrh_val << 32); - if (riscv_pmu_ctr_monitor_cycles(env, ctr_idx) || - riscv_pmu_ctr_monitor_instructions(env, ctr_idx)) { + if (!get_field(env->mcountinhibit, BIT(ctr_idx)) && + (riscv_pmu_ctr_monitor_cycles(env, ctr_idx) || + riscv_pmu_ctr_monitor_instructions(env, ctr_idx))) { counter->mhpmcounterh_prev = riscv_pmu_ctr_get_fixed_counters_val(env, ctr_idx, true); if (ctr_idx > 2) { @@ -2170,31 +2172,60 @@ static RISCVException write_mcountinhibit(CPURISCVState *env, int csrno, int cidx; PMUCTRState *counter; RISCVCPU *cpu = env_archcpu(env); + uint32_t present_ctrs = cpu->pmu_avail_ctrs | COUNTEREN_CY | COUNTEREN_IR; + target_ulong updated_ctrs = (env->mcountinhibit ^ val) & present_ctrs; + uint64_t mhpmctr_val, prev_count, curr_count; /* WARL register - disable unavailable counters; TM bit is always 0 */ - env->mcountinhibit = - val & (cpu->pmu_avail_ctrs | COUNTEREN_CY | COUNTEREN_IR); + env->mcountinhibit = val & present_ctrs; /* Check if any other counter is also monitoring cycles/instructions */ for (cidx = 0; cidx < RV_MAX_MHPMCOUNTERS; cidx++) { - counter = &env->pmu_ctrs[cidx]; - if (get_field(env->mcountinhibit, BIT(cidx)) && (val & BIT(cidx))) { - /* - * Update the counter value for cycle/instret as we can't stop the - * host ticks. But we should show the current value at this moment. - */ - if (riscv_pmu_ctr_monitor_cycles(env, cidx) || - riscv_pmu_ctr_monitor_instructions(env, cidx)) { - counter->mhpmcounter_val = - riscv_pmu_ctr_get_fixed_counters_val(env, cidx, false) - - counter->mhpmcounter_prev + - counter->mhpmcounter_val; + if (!(updated_ctrs & BIT(cidx)) || + (!riscv_pmu_ctr_monitor_cycles(env, cidx) && + !riscv_pmu_ctr_monitor_instructions(env, cidx))) { + continue; + } + + counter = &env->pmu_ctrs[cidx]; + + if (!get_field(env->mcountinhibit, BIT(cidx))) { + counter->mhpmcounter_prev = + riscv_pmu_ctr_get_fixed_counters_val(env, cidx, false); + if (riscv_cpu_mxl(env) == MXL_RV32) { + counter->mhpmcounterh_prev = + riscv_pmu_ctr_get_fixed_counters_val(env, cidx, true); + } + + if (cidx > 2) { + mhpmctr_val = counter->mhpmcounter_val; if (riscv_cpu_mxl(env) == MXL_RV32) { - counter->mhpmcounterh_val = - riscv_pmu_ctr_get_fixed_counters_val(env, cidx, true) - - counter->mhpmcounterh_prev + - counter->mhpmcounterh_val; + mhpmctr_val = mhpmctr_val | + ((uint64_t)counter->mhpmcounterh_val << 32); } + riscv_pmu_setup_timer(env, mhpmctr_val, cidx); + } + } else { + curr_count = riscv_pmu_ctr_get_fixed_counters_val(env, cidx, false); + + mhpmctr_val = counter->mhpmcounter_val; + prev_count = counter->mhpmcounter_prev; + if (riscv_cpu_mxl(env) == MXL_RV32) { + uint64_t tmp = + riscv_pmu_ctr_get_fixed_counters_val(env, cidx, true); + + curr_count = curr_count | (tmp << 32); + mhpmctr_val = mhpmctr_val | + ((uint64_t)counter->mhpmcounterh_val << 32); + prev_count = prev_count | + ((uint64_t)counter->mhpmcounterh_prev << 32); + } + + /* Adjust the counter for later reads. */ + mhpmctr_val = curr_count - prev_count + mhpmctr_val; + counter->mhpmcounter_val = mhpmctr_val; + if (riscv_cpu_mxl(env) == MXL_RV32) { + counter->mhpmcounterh_val = mhpmctr_val >> 32; } } } diff --git a/target/riscv/pmu.c b/target/riscv/pmu.c index ac648cff8d7c..63420d9f3679 100644 --- a/target/riscv/pmu.c +++ b/target/riscv/pmu.c @@ -285,8 +285,7 @@ int riscv_pmu_incr_ctr(RISCVCPU *cpu, enum riscv_pmu_event_idx event_idx) } ctr_idx = GPOINTER_TO_UINT(value); - if (!riscv_pmu_counter_enabled(cpu, ctr_idx) || - get_field(env->mcountinhibit, BIT(ctr_idx))) { + if (!riscv_pmu_counter_enabled(cpu, ctr_idx)) { return -1; } From patchwork Thu Jul 11 22:31:14 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Atish Kumar Patra X-Patchwork-Id: 13731158 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 00525C3DA4A for ; Thu, 11 Jul 2024 22:33:53 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sS2KP-00011I-Bk; Thu, 11 Jul 2024 18:31:53 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sS2KO-0000xY-8N for qemu-devel@nongnu.org; Thu, 11 Jul 2024 18:31:52 -0400 Received: from mail-pl1-x62e.google.com ([2607:f8b0:4864:20::62e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sS2KL-0001eb-OV for qemu-devel@nongnu.org; Thu, 11 Jul 2024 18:31:51 -0400 Received: by mail-pl1-x62e.google.com with SMTP id d9443c01a7336-1fbc0a1494dso9817805ad.3 for ; Thu, 11 Jul 2024 15:31:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rivosinc-com.20230601.gappssmtp.com; s=20230601; t=1720737107; x=1721341907; darn=nongnu.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=kD00JMr9p5V5CiUPCOgTYfk1sFKx7ToS26FZRkZhj3g=; b=wmyxR22e6XT/QuNZ0DzJSC9dv1LAPlDaJnnqneMd5HPp/omPYYFWFasHNy+99GNNdu tuYg+qNg89e06v8QhLhmo/AjBZes5/unXBBzUZxYSPxNrD1VrYI830B/OQ2jWYgs1VJn S1poePa2eMF/B1Pa53xdT8sygJeF3VQtnJj6BRk39mY1nXTuCuSJxBhTWAQ5pvGfKhwd NbHht4fgl0aOeT35NYNs2YBagURb/ScBBwBGXZptob7hNNBEHS6tF0Kj5u9/XX3xKexO FFHzFhqPNuVcOkeg4cJvsExBJlErWXM2lj6Qu7UYRZrZeKk4o0/0vwzuHFZOhy0FEBnu IvGg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1720737107; x=1721341907; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=kD00JMr9p5V5CiUPCOgTYfk1sFKx7ToS26FZRkZhj3g=; b=S/Aml8L7afZIw2zohz7QxstZxEgsoHUjQjz8tS611EQiVF1hcQmLsFSguTW8JfT3UO HKjCAqkNABUPdxDjavkff2SmrjzxWUfwAhOwF2qMZDaErnSb50xIDWFk1OYSPyxbdy3w 5sQxXEClr3sGdqEK2q0MFbpw6wPrGsBhE1pO47v+JIlPplyZlHQIrHJUxmVLPans4TYn CbX5e+3JxCRLmOpVYLHhvcN+rbuuil6pyEnxh9EdBE5ZGSmpwoNaB+OYnKN9Kv63wwjs j3vveBMfV6hX4nzRXCM+2s3Vo3U94OqwolhXmOccd49AYlYZmLgoqmWa8M0+VDqlsImB NbHA== X-Forwarded-Encrypted: i=1; AJvYcCX2FyxElYEZpQ43vtFfb6wI37wgcGJjjAXaL9u6jrlfB7cca+t0ssz/dHPshHoa1YEr1dofFCqN3tXthbovZ/cOTyXWF3Q= X-Gm-Message-State: AOJu0YzdeDSPgr+pvJ4Y5jLeJgL3OWB4pktAoFoVH2X0Fa/UAvKHIMJ4 quLIfp/vmh9vq5vYajA/AY1ljD0dixhRRgkSAW38jEpjyGP2V8eHwR42vosCuVqLd6tmygZ6zod M X-Google-Smtp-Source: AGHT+IGU0Rd6P28qya8ELyK9SzT+ELBr3EtvicfzcIPj8vbHVO3yOZtILiQjynyVqePRn8hy2nUB/w== X-Received: by 2002:a17:902:c40e:b0:1fb:7c7f:6458 with SMTP id d9443c01a7336-1fbb6d2a41bmr73764325ad.32.1720737107266; Thu, 11 Jul 2024 15:31:47 -0700 (PDT) Received: from atishp.ba.rivosinc.com ([64.71.180.162]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-1fbb6b34ca2sm55161565ad.53.2024.07.11.15.31.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 11 Jul 2024 15:31:46 -0700 (PDT) From: Atish Patra Date: Thu, 11 Jul 2024 15:31:14 -0700 Subject: [PATCH v8 11/13] target/riscv: More accurately model priv mode filtering. MIME-Version: 1.0 Message-Id: <20240711-smcntrpmf_v7-v8-11-b7c38ae7b263@rivosinc.com> References: <20240711-smcntrpmf_v7-v8-0-b7c38ae7b263@rivosinc.com> In-Reply-To: <20240711-smcntrpmf_v7-v8-0-b7c38ae7b263@rivosinc.com> To: qemu-riscv@nongnu.org, qemu-devel@nongnu.org Cc: palmer@dabbelt.com, liwei1518@gmail.com, zhiwei_liu@linux.alibaba.com, bin.meng@windriver.com, dbarboza@ventanamicro.com, alistair.francis@wdc.com X-Mailer: b4 0.15-dev-13183 Received-SPF: pass client-ip=2607:f8b0:4864:20::62e; envelope-from=atishp@rivosinc.com; helo=mail-pl1-x62e.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Rajnesh Kanwal In case of programmable counters configured to count inst/cycles we often end-up with counter not incrementing at all from kernel's perspective. For example: - Kernel configures hpm3 to count instructions and sets hpmcounter to -10000 and all modes except U mode are inhibited. - In QEMU we configure a timer to expire after ~10000 instructions. - Problem is, it's often the case that kernel might not even schedule Umode task and we hit the timer callback in QEMU. - In the timer callback we inject the interrupt into kernel, kernel runs the handler and reads hpmcounter3 value. - Given QEMU maintains individual counters to count for each privilege mode, and given umode never ran, the umode counter didn't increment and QEMU returns same value as was programmed by the kernel when starting the counter. - Kernel checks for overflow using previous and current value of the counter and reprograms the counter given there wasn't an overflow as per the counter value. (Which itself is a problem. We have QEMU telling kernel that counter3 overflowed but the counter value returned by QEMU doesn't seem to reflect that.). This change makes sure that timer is reprogrammed from the handler if the counter didn't overflow based on the counter value. Second, this change makes sure that whenever the counter is read, it's value is updated to reflect the latest count. Signed-off-by: Rajnesh Kanwal Reviewed-by: Daniel Henrique Barboza --- target/riscv/csr.c | 5 ++++- target/riscv/pmu.c | 30 +++++++++++++++++++++++++++--- target/riscv/pmu.h | 2 ++ 3 files changed, 33 insertions(+), 4 deletions(-) diff --git a/target/riscv/csr.c b/target/riscv/csr.c index ff06276192dd..8690a7c4c472 100644 --- a/target/riscv/csr.c +++ b/target/riscv/csr.c @@ -1039,6 +1039,9 @@ static target_ulong riscv_pmu_ctr_get_fixed_counters_val(CPURISCVState *env, goto done; } + /* Update counter before reading. */ + riscv_pmu_update_fixed_ctrs(env, env->priv, env->virt_enabled); + if (!(cfg_val & MCYCLECFG_BIT_MINH)) { curr_val += counter_arr[PRV_M]; } @@ -1122,7 +1125,7 @@ static RISCVException write_mhpmcounterh(CPURISCVState *env, int csrno, return RISCV_EXCP_NONE; } -static RISCVException riscv_pmu_read_ctr(CPURISCVState *env, target_ulong *val, +RISCVException riscv_pmu_read_ctr(CPURISCVState *env, target_ulong *val, bool upper_half, uint32_t ctr_idx) { PMUCTRState *counter = &env->pmu_ctrs[ctr_idx]; diff --git a/target/riscv/pmu.c b/target/riscv/pmu.c index 63420d9f3679..a4729f6c53bb 100644 --- a/target/riscv/pmu.c +++ b/target/riscv/pmu.c @@ -425,6 +425,8 @@ static void pmu_timer_trigger_irq(RISCVCPU *cpu, target_ulong *mhpmevent_val; uint64_t of_bit_mask; int64_t irq_trigger_at; + uint64_t curr_ctr_val, curr_ctrh_val; + uint64_t ctr_val; if (evt_idx != RISCV_PMU_EVENT_HW_CPU_CYCLES && evt_idx != RISCV_PMU_EVENT_HW_INSTRUCTIONS) { @@ -454,6 +456,26 @@ static void pmu_timer_trigger_irq(RISCVCPU *cpu, return; } + riscv_pmu_read_ctr(env, (target_ulong *)&curr_ctr_val, false, ctr_idx); + ctr_val = counter->mhpmcounter_val; + if (riscv_cpu_mxl(env) == MXL_RV32) { + riscv_pmu_read_ctr(env, (target_ulong *)&curr_ctrh_val, true, ctr_idx); + curr_ctr_val = curr_ctr_val | (curr_ctrh_val << 32); + ctr_val = ctr_val | + ((uint64_t)counter->mhpmcounterh_val << 32); + } + + /* + * We can not accommodate for inhibited modes when setting up timer. Check + * if the counter has actually overflowed or not by comparing current + * counter value (accommodated for inhibited modes) with software written + * counter value. + */ + if (curr_ctr_val >= ctr_val) { + riscv_pmu_setup_timer(env, curr_ctr_val, ctr_idx); + return; + } + if (cpu->pmu_avail_ctrs & BIT(ctr_idx)) { /* Generate interrupt only if OF bit is clear */ if (!(*mhpmevent_val & of_bit_mask)) { @@ -475,7 +497,7 @@ void riscv_pmu_timer_cb(void *priv) int riscv_pmu_setup_timer(CPURISCVState *env, uint64_t value, uint32_t ctr_idx) { - uint64_t overflow_delta, overflow_at; + uint64_t overflow_delta, overflow_at, curr_ns; int64_t overflow_ns, overflow_left = 0; RISCVCPU *cpu = env_archcpu(env); PMUCTRState *counter = &env->pmu_ctrs[ctr_idx]; @@ -506,8 +528,10 @@ int riscv_pmu_setup_timer(CPURISCVState *env, uint64_t value, uint32_t ctr_idx) } else { return -1; } - overflow_at = (uint64_t)qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + - overflow_ns; + curr_ns = (uint64_t)qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); + overflow_at = curr_ns + overflow_ns; + if (overflow_at <= curr_ns) + overflow_at = UINT64_MAX; if (overflow_at > INT64_MAX) { overflow_left += overflow_at - INT64_MAX; diff --git a/target/riscv/pmu.h b/target/riscv/pmu.h index ca40cfeed647..3853d0e2629e 100644 --- a/target/riscv/pmu.h +++ b/target/riscv/pmu.h @@ -36,5 +36,7 @@ int riscv_pmu_setup_timer(CPURISCVState *env, uint64_t value, uint32_t ctr_idx); void riscv_pmu_update_fixed_ctrs(CPURISCVState *env, target_ulong newpriv, bool new_virt); +RISCVException riscv_pmu_read_ctr(CPURISCVState *env, target_ulong *val, + bool upper_half, uint32_t ctr_idx); #endif /* RISCV_PMU_H */ From patchwork Thu Jul 11 22:31:15 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Atish Kumar Patra X-Patchwork-Id: 13731155 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A97A9C3DA45 for ; Thu, 11 Jul 2024 22:33:39 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sS2KP-00013B-Qk; Thu, 11 Jul 2024 18:31:53 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sS2KO-0000wZ-0X for qemu-devel@nongnu.org; Thu, 11 Jul 2024 18:31:52 -0400 Received: from mail-pl1-x62d.google.com ([2607:f8b0:4864:20::62d]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sS2KL-0001f1-Ty for qemu-devel@nongnu.org; Thu, 11 Jul 2024 18:31:51 -0400 Received: by mail-pl1-x62d.google.com with SMTP id d9443c01a7336-1fb3cf78fbdso9714845ad.1 for ; Thu, 11 Jul 2024 15:31:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rivosinc-com.20230601.gappssmtp.com; s=20230601; t=1720737108; x=1721341908; darn=nongnu.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=fPS11BBBq2Nn4RJ2JAWB0GCizp88P/htp+YkSfYLhzE=; b=ll1Jquh/SzqAUaxaPuW/H75yUA4YErk7ut+723IVQZjQ3+binf/HPxTFdQWW0mB2HN KwfX9GJFOrLvg6pRt7C4QSJlhw0kYp9y/UhJSJxhzRlLKr1UAV15xT6T6izAxDCQoTWh F81l/1acv/QKS5jwJmu4HpLS1Gjg+ZXqwsgNFv3umKQOIl9hAghzKiaTjn85TE64iWF1 mruQJWrhCXisCQAu4HHA3+Mr4ajAnH40eTxxsnDKOF33ecMA1FAOfKFtS3Cv95glrkGh Djxxd5nTTHXofBrsPKgQnggKI6peLigGPlxc/I4vQpIXhzoJHH0DuWqqSEVkezafdemH ZIiQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1720737108; x=1721341908; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=fPS11BBBq2Nn4RJ2JAWB0GCizp88P/htp+YkSfYLhzE=; b=LRbcjLK0fsz9M7H8OVXk3t8QKQngnEgUXYsvmk/PELkMeKqL+ZVKnw0rcWzjnSS/r3 Yjhr3ZLO9G+B0VcZPsWgW0vvsdMBT2omSqKLdbz5i5n6OSgb442R9fMUjE0Ls+DjfdLy aq7IVWAWHB4ukJhq/hQNJ12yK8oy/nRN1fUbTNFoydyAEzaMNRDEUneoJdnTnqe2hAFm Zbyx0EtfLG+iRfXtL94yo1eOFleHaxSjUeAQKnEjP4450VIPgZVysr7GZZ3FIs8BVD6h GzvGJ2SLmuuyNQiHb4mcFWEupZ1Bmcegzq0cPPCAPi0QWFeNdT9Ek7WN7yqfUa02Nfni rW/g== X-Forwarded-Encrypted: i=1; AJvYcCVVzzQ0cleavc4i5F/7S8CZCJhSQl9MAX07vD8keTRWf/6abrSDMRGdNXLBE8wAFB3bLMPV9HTPfU+2J45Jo3ih19srM2w= X-Gm-Message-State: AOJu0YxLIrWgDLMvmj8jEadiRu0OMrruP5Bh9Wp+IO5ipOMLlZvI7qRP Rk1Xaw+LdjH/W+6ce3abpzYMPUX8hWqJoZBAzJnlDEIc46k+ou7TYp95nRi1Mn0= X-Google-Smtp-Source: AGHT+IHbrIsqx1w/2VoacGalx9V8z1VIGvenzCaqA2OmOGNusj6q1D2VXdqrJu6lKO8jEeJkmEhmeQ== X-Received: by 2002:a17:902:e806:b0:1fb:a38b:c5a0 with SMTP id d9443c01a7336-1fbb6d0855bmr86588575ad.31.1720737108429; Thu, 11 Jul 2024 15:31:48 -0700 (PDT) Received: from atishp.ba.rivosinc.com ([64.71.180.162]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-1fbb6b34ca2sm55161565ad.53.2024.07.11.15.31.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 11 Jul 2024 15:31:48 -0700 (PDT) From: Atish Patra Date: Thu, 11 Jul 2024 15:31:15 -0700 Subject: [PATCH v8 12/13] target/riscv: Do not setup pmu timer if OF is disabled MIME-Version: 1.0 Message-Id: <20240711-smcntrpmf_v7-v8-12-b7c38ae7b263@rivosinc.com> References: <20240711-smcntrpmf_v7-v8-0-b7c38ae7b263@rivosinc.com> In-Reply-To: <20240711-smcntrpmf_v7-v8-0-b7c38ae7b263@rivosinc.com> To: qemu-riscv@nongnu.org, qemu-devel@nongnu.org Cc: palmer@dabbelt.com, liwei1518@gmail.com, zhiwei_liu@linux.alibaba.com, bin.meng@windriver.com, dbarboza@ventanamicro.com, alistair.francis@wdc.com X-Mailer: b4 0.15-dev-13183 Received-SPF: pass client-ip=2607:f8b0:4864:20::62d; envelope-from=atishp@rivosinc.com; helo=mail-pl1-x62d.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org The timer is setup function is invoked in both hpmcounter write and mcountinhibit write path. If the OF bit set, the LCOFI interrupt is disabled. There is no benefitting in setting up the qemu timer until LCOFI is cleared to indicate that interrupts can be fired again. Reviewed-by: Daniel Henrique Barboza Signed-off-by: Atish Patra --- target/riscv/pmu.c | 56 ++++++++++++++++++++++++++++++++++++++++++------------ 1 file changed, 44 insertions(+), 12 deletions(-) diff --git a/target/riscv/pmu.c b/target/riscv/pmu.c index a4729f6c53bb..3cc0b3648cad 100644 --- a/target/riscv/pmu.c +++ b/target/riscv/pmu.c @@ -416,14 +416,49 @@ int riscv_pmu_update_event_map(CPURISCVState *env, uint64_t value, return 0; } +static bool pmu_hpmevent_is_of_set(CPURISCVState *env, uint32_t ctr_idx) +{ + target_ulong mhpmevent_val; + uint64_t of_bit_mask; + + if (riscv_cpu_mxl(env) == MXL_RV32) { + mhpmevent_val = env->mhpmeventh_val[ctr_idx]; + of_bit_mask = MHPMEVENTH_BIT_OF; + } else { + mhpmevent_val = env->mhpmevent_val[ctr_idx]; + of_bit_mask = MHPMEVENT_BIT_OF; + } + + return get_field(mhpmevent_val, of_bit_mask); +} + +static bool pmu_hpmevent_set_of_if_clear(CPURISCVState *env, uint32_t ctr_idx) +{ + target_ulong *mhpmevent_val; + uint64_t of_bit_mask; + + if (riscv_cpu_mxl(env) == MXL_RV32) { + mhpmevent_val = &env->mhpmeventh_val[ctr_idx]; + of_bit_mask = MHPMEVENTH_BIT_OF; + } else { + mhpmevent_val = &env->mhpmevent_val[ctr_idx]; + of_bit_mask = MHPMEVENT_BIT_OF; + } + + if (!get_field(*mhpmevent_val, of_bit_mask)) { + *mhpmevent_val |= of_bit_mask; + return true; + } + + return false; +} + static void pmu_timer_trigger_irq(RISCVCPU *cpu, enum riscv_pmu_event_idx evt_idx) { uint32_t ctr_idx; CPURISCVState *env = &cpu->env; PMUCTRState *counter; - target_ulong *mhpmevent_val; - uint64_t of_bit_mask; int64_t irq_trigger_at; uint64_t curr_ctr_val, curr_ctrh_val; uint64_t ctr_val; @@ -439,12 +474,9 @@ static void pmu_timer_trigger_irq(RISCVCPU *cpu, return; } - if (riscv_cpu_mxl(env) == MXL_RV32) { - mhpmevent_val = &env->mhpmeventh_val[ctr_idx]; - of_bit_mask = MHPMEVENTH_BIT_OF; - } else { - mhpmevent_val = &env->mhpmevent_val[ctr_idx]; - of_bit_mask = MHPMEVENT_BIT_OF; + /* Generate interrupt only if OF bit is clear */ + if (pmu_hpmevent_is_of_set(env, ctr_idx)) { + return; } counter = &env->pmu_ctrs[ctr_idx]; @@ -477,9 +509,7 @@ static void pmu_timer_trigger_irq(RISCVCPU *cpu, } if (cpu->pmu_avail_ctrs & BIT(ctr_idx)) { - /* Generate interrupt only if OF bit is clear */ - if (!(*mhpmevent_val & of_bit_mask)) { - *mhpmevent_val |= of_bit_mask; + if (pmu_hpmevent_set_of_if_clear(env, ctr_idx)) { riscv_cpu_update_mip(env, MIP_LCOFIP, BOOL_TO_MASK(1)); } } @@ -502,7 +532,9 @@ int riscv_pmu_setup_timer(CPURISCVState *env, uint64_t value, uint32_t ctr_idx) RISCVCPU *cpu = env_archcpu(env); PMUCTRState *counter = &env->pmu_ctrs[ctr_idx]; - if (!riscv_pmu_counter_valid(cpu, ctr_idx) || !cpu->cfg.ext_sscofpmf) { + /* No need to setup a timer if LCOFI is disabled when OF is set */ + if (!riscv_pmu_counter_valid(cpu, ctr_idx) || !cpu->cfg.ext_sscofpmf || + pmu_hpmevent_is_of_set(env, ctr_idx)) { return -1; } From patchwork Thu Jul 11 22:31:16 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Atish Kumar Patra X-Patchwork-Id: 13731153 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 3D5EDC3DA4A for ; Thu, 11 Jul 2024 22:33:32 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sS2KS-0001EX-KQ; Thu, 11 Jul 2024 18:31:56 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sS2KP-00010v-5w for qemu-devel@nongnu.org; Thu, 11 Jul 2024 18:31:53 -0400 Received: from mail-pl1-x630.google.com ([2607:f8b0:4864:20::630]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sS2KN-0001fW-Fe for qemu-devel@nongnu.org; Thu, 11 Jul 2024 18:31:52 -0400 Received: by mail-pl1-x630.google.com with SMTP id d9443c01a7336-1fb8781ef1bso12129405ad.3 for ; Thu, 11 Jul 2024 15:31:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rivosinc-com.20230601.gappssmtp.com; s=20230601; t=1720737110; x=1721341910; darn=nongnu.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=rqjlcgIgmq16A+DWwfByj87bRnzwHK8etosGH79pS4o=; b=KDois6StV03Q8UlgIbdUnhODv1sGxOcyCeFBGDnag2Ry1DfHDh6QOnHclbrfHURD4e xnkCZApVIJCqgCuPj0Gq/OgFAd+mlz2NxCfPh+GHqWwGkhdpir/xzXEwoIllndGEgQrS Z28q2fsKv9JYunmFU/tRXQ/aJNS3aHYXBc1fN3V55F6kVYvn2VZKaNYNdodsdyPVd6J1 bPjpVMqgOdkLfEC793A//Y1eTcq0iI9sPA6uDndd2MMVASOSr/LpquCNNS/AWseVXSfl HtJY7YXiRh/sgXPHzmE7OyPPghFYmzFeN+Yq1x6qYa967Ix1bKYGHCh84QHmovh+AojV v6ng== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1720737110; x=1721341910; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=rqjlcgIgmq16A+DWwfByj87bRnzwHK8etosGH79pS4o=; b=fcv8ftaFJ0O47HwyWgcCBZ4Uq+osQ6zkSgrbBMBCC6DIVOt7znfrimT4fqh+2As/Fn 8DsUM5NvA8tnRe89lp3HNEffV/0H2JFMslNWbKAMsoOOoLhMj6YSuiqjMoZwuAqPb9Ti v/6WpLbXn0bJOYM3rquPYqZX4REIY6y2kgpboIRRhzDrrx1017bxHTgxUTMKtgh845LV hDsTdXKsLcbGWPI+hT8MgTzPIH553kNbCNF2K8+nO0WqTziG+n0GhmnyZXvpguOMO5jx BP4GC5oC+UJiSxL4kSwFxAAHSFT6O35K6p/QMRTAzzBEgZtydu2tngWhc4zXV7Cj85wO ye+g== X-Forwarded-Encrypted: i=1; AJvYcCVxDnggV+/3aiuWZQprMJpclnN0mrVuO8/Qto4E/p8VxSFHzr5FrFXYWRnTKsi8ZgCNNfpgpB0vAkAx6xlGL5xYRa6BhJQ= X-Gm-Message-State: AOJu0Yz5pEIXGfGd6o6dfc5nwViIzRrhpBonuAso7AgN7+yEY/yuZ9w2 48/0ZQm3Y5zntaMbbN543kSdhPyH+Fq8QYEDHZpYB9/Bm+W2G5UBx9exDtj7GxE= X-Google-Smtp-Source: AGHT+IHicJpJHv6P8ExOwUd2AuxjdQfvUpY5FOT0r1dXGuV6ImK+4MuoBztapO0yrd06Lr2TjzXGkg== X-Received: by 2002:a17:902:e745:b0:1fb:696a:47b3 with SMTP id d9443c01a7336-1fbb6cda899mr89884775ad.7.1720737110269; Thu, 11 Jul 2024 15:31:50 -0700 (PDT) Received: from atishp.ba.rivosinc.com ([64.71.180.162]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-1fbb6b34ca2sm55161565ad.53.2024.07.11.15.31.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 11 Jul 2024 15:31:49 -0700 (PDT) From: Atish Patra Date: Thu, 11 Jul 2024 15:31:16 -0700 Subject: [PATCH v8 13/13] target/riscv: Expose the Smcntrpmf config MIME-Version: 1.0 Message-Id: <20240711-smcntrpmf_v7-v8-13-b7c38ae7b263@rivosinc.com> References: <20240711-smcntrpmf_v7-v8-0-b7c38ae7b263@rivosinc.com> In-Reply-To: <20240711-smcntrpmf_v7-v8-0-b7c38ae7b263@rivosinc.com> To: qemu-riscv@nongnu.org, qemu-devel@nongnu.org Cc: palmer@dabbelt.com, liwei1518@gmail.com, zhiwei_liu@linux.alibaba.com, bin.meng@windriver.com, dbarboza@ventanamicro.com, alistair.francis@wdc.com X-Mailer: b4 0.15-dev-13183 Received-SPF: pass client-ip=2607:f8b0:4864:20::630; envelope-from=atishp@rivosinc.com; helo=mail-pl1-x630.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Create a new config for Smcntrpmf extension so that it can be enabled/ disabled from the qemu commandline. Signed-off-by: Atish Patra Acked-by: Alistair Francis --- target/riscv/cpu.c | 1 + 1 file changed, 1 insertion(+) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 63f553c92b00..ef50130a91e7 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -1468,6 +1468,7 @@ const char *riscv_get_misa_ext_description(uint32_t bit) const RISCVCPUMultiExtConfig riscv_cpu_extensions[] = { /* Defaults for standard extensions */ MULTI_EXT_CFG_BOOL("sscofpmf", ext_sscofpmf, false), + MULTI_EXT_CFG_BOOL("smcntrpmf", ext_smcntrpmf, false), MULTI_EXT_CFG_BOOL("zifencei", ext_zifencei, true), MULTI_EXT_CFG_BOOL("zicsr", ext_zicsr, true), MULTI_EXT_CFG_BOOL("zihintntl", ext_zihintntl, true),