From patchwork Tue Nov 28 14:53:44 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anup Patel X-Patchwork-Id: 13471302 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=ventanamicro.com header.i=@ventanamicro.com header.b="SR+B9bwQ" Received: from mail-pg1-x52d.google.com (mail-pg1-x52d.google.com [IPv6:2607:f8b0:4864:20::52d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 757DD10D2 for ; Tue, 28 Nov 2023 06:54:18 -0800 (PST) Received: by mail-pg1-x52d.google.com with SMTP id 41be03b00d2f7-5be24d41bb8so3947316a12.0 for ; Tue, 28 Nov 2023 06:54:18 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ventanamicro.com; s=google; t=1701183258; x=1701788058; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=zWjJzXo4ydUM1qBdZFj/A/LBdPnzjXBTEeDQn9bxklc=; b=SR+B9bwQXi1BDIf/KEeufLybH3ombV18cVXRQqpJImYLpG8SpO+cdSbaVDIqnQ2z84 JLxtK+Wynfvo7HT3RPHaPeNVq1IGraDhjzk9PYH5I+QPmIjjeBz76mM0BLj3ZJEWGKMZ 5emkb6wQAPk1p0MEFurduanGw9AI6Pt8s+mBDGdd4PuJrkRLJj0LZEIGn1KBXftxHaB2 v0ZM5QIt/I8JhGLB5o/BGhfMGFBFzzyFJLRQotvpMz6FpTHlYUpE4P3k2Y8L9MtxOfu4 SzJzILJYi2fMEC4+nbRwzoKTHpLHu75c/QblP+axsASgrroErSlhMupJTxipK3jTpdpR dyaw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1701183258; x=1701788058; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=zWjJzXo4ydUM1qBdZFj/A/LBdPnzjXBTEeDQn9bxklc=; b=BLuzRJJfaUjQq3HOVbf2Sz3EeTxsR1q0Iv6OYw77diXuVKzJxk3LPe18WhIom/9ndO 2bZbLJa1c4FOgGt2J/m1Z9dhK6X0qZVc4xZlJhIpu2vMOXTS84aUIkJQj1OPQB/Y80ev XS4btSrKH3RidAyCiU0Ase7MLUVg3DtVK4buXHDZhnia02lS9BszsbnQXoYgMWiNGqb6 SAMLD/G8AUMLrPgpv++aRhGZFlChR8lggjuDx2gB83I3ynZP407s70o456d1+8k7Qm6t ugEr9IruFRwzws/z6116T/mAC+98yvGuQ/tnpFL34mgWiYaEfDdYseTpXvJRyzm/tl1J f/EA== X-Gm-Message-State: AOJu0Ywb/aKzCKP3rVqLuBhgm4mll3CT5JqJppG4UglCdPN2YsqVRSSK E3p+47i7yuQn2gsmur4peCr8tvddjos20lzQCL8= X-Google-Smtp-Source: AGHT+IGxW136Vwz0iG0z8Bd+73y8peGGLL8YdmZ8vllqxs8AnDN8I+cKti2HazA7AW6wj4+a/QmmRQ== X-Received: by 2002:a17:90b:4b0e:b0:285:b687:b831 with SMTP id lx14-20020a17090b4b0e00b00285b687b831mr14391825pjb.10.1701183257699; Tue, 28 Nov 2023 06:54:17 -0800 (PST) Received: from anup-ubuntu-vm.localdomain ([103.97.165.210]) by smtp.gmail.com with ESMTPSA id u11-20020a170902e80b00b001bf11cf2e21sm10281552plg.210.2023.11.28.06.54.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 28 Nov 2023 06:54:17 -0800 (PST) From: Anup Patel To: Paolo Bonzini , Atish Patra , Palmer Dabbelt , Paul Walmsley , Shuah Khan Cc: Anup Patel , Andrew Jones , devicetree@vger.kernel.org, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, Anup Patel Subject: [PATCH 02/15] RISC-V: KVM: Allow Zbc extension for Guest/VM Date: Tue, 28 Nov 2023 20:23:44 +0530 Message-Id: <20231128145357.413321-3-apatel@ventanamicro.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231128145357.413321-1-apatel@ventanamicro.com> References: <20231128145357.413321-1-apatel@ventanamicro.com> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 We extend the KVM ISA extension ONE_REG interface to allow KVM user space to detect and enable Zbc extension for Guest/VM. Signed-off-by: Anup Patel Reviewed-by: Andrew Jones --- arch/riscv/include/uapi/asm/kvm.h | 1 + arch/riscv/kvm/vcpu_onereg.c | 2 ++ 2 files changed, 3 insertions(+) diff --git a/arch/riscv/include/uapi/asm/kvm.h b/arch/riscv/include/uapi/asm/kvm.h index 60d3b21dead7..518b368b41e5 100644 --- a/arch/riscv/include/uapi/asm/kvm.h +++ b/arch/riscv/include/uapi/asm/kvm.h @@ -139,6 +139,7 @@ enum KVM_RISCV_ISA_EXT_ID { KVM_RISCV_ISA_EXT_ZIHPM, KVM_RISCV_ISA_EXT_SMSTATEEN, KVM_RISCV_ISA_EXT_ZICOND, + KVM_RISCV_ISA_EXT_ZBC, KVM_RISCV_ISA_EXT_MAX, }; diff --git a/arch/riscv/kvm/vcpu_onereg.c b/arch/riscv/kvm/vcpu_onereg.c index f8c9fa0c03c5..f789517c9fae 100644 --- a/arch/riscv/kvm/vcpu_onereg.c +++ b/arch/riscv/kvm/vcpu_onereg.c @@ -42,6 +42,7 @@ static const unsigned long kvm_isa_ext_arr[] = { KVM_ISA_EXT_ARR(SVPBMT), KVM_ISA_EXT_ARR(ZBA), KVM_ISA_EXT_ARR(ZBB), + KVM_ISA_EXT_ARR(ZBC), KVM_ISA_EXT_ARR(ZBS), KVM_ISA_EXT_ARR(ZICBOM), KVM_ISA_EXT_ARR(ZICBOZ), @@ -92,6 +93,7 @@ static bool kvm_riscv_vcpu_isa_disable_allowed(unsigned long ext) case KVM_RISCV_ISA_EXT_SVNAPOT: case KVM_RISCV_ISA_EXT_ZBA: case KVM_RISCV_ISA_EXT_ZBB: + case KVM_RISCV_ISA_EXT_ZBC: case KVM_RISCV_ISA_EXT_ZBS: case KVM_RISCV_ISA_EXT_ZICNTR: case KVM_RISCV_ISA_EXT_ZICOND: