From patchwork Tue Oct 3 03:52:23 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anup Patel X-Patchwork-Id: 13406722 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D7EA5E776FD for ; Tue, 3 Oct 2023 03:53:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239067AbjJCDxI (ORCPT ); Mon, 2 Oct 2023 23:53:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51382 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239044AbjJCDxF (ORCPT ); Mon, 2 Oct 2023 23:53:05 -0400 Received: from mail-pl1-x62a.google.com (mail-pl1-x62a.google.com [IPv6:2607:f8b0:4864:20::62a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 70D90F4 for ; Mon, 2 Oct 2023 20:52:56 -0700 (PDT) Received: by mail-pl1-x62a.google.com with SMTP id d9443c01a7336-1c760b34d25so3338715ad.3 for ; Mon, 02 Oct 2023 20:52:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ventanamicro.com; s=google; t=1696305175; x=1696909975; 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=PR9YD+pr7hv0tmO2NOz2gpQmVbaE/cJ/IAsO/LYC7Pc=; b=XndW1qrhTVSGZgMXpNzg31W8cUV7jQiFtUtpcG8iZmQmgibFRs4af+6llaF/WgscTR bhJU3jLvF+1MzNzf9MvoXDAIRAaGy0ZCx34pMBVh0fmoN+p+Xl7GxQ9CZDg69mXsglzz K4JAYafHcHA8Xr4efF83MALAK0eOgEy779VYsKIqwLwfjt8BK16vzHq1XcC01lXA/g3C sDHOQmdxdYvWocjiPuKgXiDg1n8544wAEOIxl6Lk1SN8oD39k5AdClp3DLMlW7lZZ/Wb bRVVBsobZ0hYOdI5ruv6WejKVSNrCpn90ar8weL6zY7dRQ6tEtoFMdm5VRtp9om0PEnh 29Kg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1696305175; x=1696909975; 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=PR9YD+pr7hv0tmO2NOz2gpQmVbaE/cJ/IAsO/LYC7Pc=; b=xRq6IgdF/y5qw/smpYuwaGKUoOC87EDlcNOKMm0Aib6+aSkTZ+gDzPb2UP+GMQKtZx hmHSOLhuCeG82FEFYRG73P7mJeEm96qA/oTWSRg/Uvg4Swugmx/XA2frhSmtLlETnI7c TV8QMmVogeSxnJY8/949CLeovVa1AzK5MpDvp1dl9uUHwpseTpxc5UuEVvD2G0me/J/p gOjktUsVC7DvT73EvOV5cloMbmLEd1xwRQiC4lwFE9YlCZ3KPQTnzqUDRwxmqtGOOM/w /BQTYLWox6SFfqUcydZxRTwC2iwNYDB02KdzW/ornkrq1OjUdhAMJ8dhGXnrcSKC1xQm 5w3A== X-Gm-Message-State: AOJu0Yw17v52U0vwsQdDh7Ay04wbSWupCozJ+Xzfwl8P+uCSEZpcd8xW sXjfGfi/f6jbHL6I+XqT+fN1xQ== X-Google-Smtp-Source: AGHT+IHVWdwg/sK94Dq4Rgb1USUh5bXBpGZ0ZnKGbSP+03oAaRBZUxn2NXa8Zq60ZS2d7KJ4sbaXhg== X-Received: by 2002:a17:903:244d:b0:1c3:2ee6:3802 with SMTP id l13-20020a170903244d00b001c32ee63802mr13278709pls.47.1696305175387; Mon, 02 Oct 2023 20:52:55 -0700 (PDT) Received: from anup-ubuntu-vm.localdomain ([171.76.84.132]) by smtp.gmail.com with ESMTPSA id ja7-20020a170902efc700b001bf846dd2d0sm277381plb.13.2023.10.02.20.52.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 02 Oct 2023 20:52:54 -0700 (PDT) From: Anup Patel To: Paolo Bonzini , Atish Patra , Palmer Dabbelt , Paul Walmsley , Conor Dooley , Rob Herring , Krzysztof Kozlowski , Shuah Khan Cc: Andrew Jones , Mayuresh Chitale , 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 v3 3/6] RISC-V: KVM: Allow Zicond extension for Guest/VM Date: Tue, 3 Oct 2023 09:22:23 +0530 Message-Id: <20231003035226.1945725-4-apatel@ventanamicro.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231003035226.1945725-1-apatel@ventanamicro.com> References: <20231003035226.1945725-1-apatel@ventanamicro.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org We extend the KVM ISA extension ONE_REG interface to allow KVM user space to detect and enable Zicond 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 b1baf6f096a3..917d8cc2489e 100644 --- a/arch/riscv/include/uapi/asm/kvm.h +++ b/arch/riscv/include/uapi/asm/kvm.h @@ -138,6 +138,7 @@ enum KVM_RISCV_ISA_EXT_ID { KVM_RISCV_ISA_EXT_ZIFENCEI, KVM_RISCV_ISA_EXT_ZIHPM, KVM_RISCV_ISA_EXT_SMSTATEEN, + KVM_RISCV_ISA_EXT_ZICOND, KVM_RISCV_ISA_EXT_MAX, }; diff --git a/arch/riscv/kvm/vcpu_onereg.c b/arch/riscv/kvm/vcpu_onereg.c index 388599fcf684..c6ebce6126b5 100644 --- a/arch/riscv/kvm/vcpu_onereg.c +++ b/arch/riscv/kvm/vcpu_onereg.c @@ -46,6 +46,7 @@ static const unsigned long kvm_isa_ext_arr[] = { KVM_ISA_EXT_ARR(ZICBOM), KVM_ISA_EXT_ARR(ZICBOZ), KVM_ISA_EXT_ARR(ZICNTR), + KVM_ISA_EXT_ARR(ZICOND), KVM_ISA_EXT_ARR(ZICSR), KVM_ISA_EXT_ARR(ZIFENCEI), KVM_ISA_EXT_ARR(ZIHINTPAUSE), @@ -93,6 +94,7 @@ static bool kvm_riscv_vcpu_isa_disable_allowed(unsigned long ext) case KVM_RISCV_ISA_EXT_ZBB: case KVM_RISCV_ISA_EXT_ZBS: case KVM_RISCV_ISA_EXT_ZICNTR: + case KVM_RISCV_ISA_EXT_ZICOND: case KVM_RISCV_ISA_EXT_ZICSR: case KVM_RISCV_ISA_EXT_ZIFENCEI: case KVM_RISCV_ISA_EXT_ZIHINTPAUSE: