From patchwork Thu Aug 22 15:10:53 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Joey Gouly X-Patchwork-Id: 13773618 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id EBD311CC898; Thu, 22 Aug 2024 15:12:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724339529; cv=none; b=nvZoShR6v5ymKvxFjkd7cUO1rQk6P/3knRkvr4xYAsScaQ0XPgamlWBsquQMfgppTIo1FLf9H7I+MXm4ZEbtD6BpOMtM0eUbxaJe0QR4DYY9t8yFvxT2yCgMGnzg05qRir5yrRCJW02RY8eLlhi3ET6lPJM2Mv/enQiWtIvVVlI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724339529; c=relaxed/simple; bh=ZjlTg9IfHwj+Pg2E7QLQpREY4z75u3xVAtdDaVM12eQ=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=itHBIo99skQmy7DongyfFfg5oCYLHXJxumVfaaXF6UCxeOp4e9y3hA0BazaK9ayaetMfeGFNrTP6E59JJIKg7nNB1v9YXMIAAui5cmpxUGoPRTIE0PggPa65GOqxgYWNDY1VX2az/p+HEWV7Y+ZKWOy74pSZ069hUy5JwC1KnSs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 8BA89FEC; Thu, 22 Aug 2024 08:12:33 -0700 (PDT) Received: from e124191.cambridge.arm.com (e124191.cambridge.arm.com [10.1.197.45]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 6CF9D3F58B; Thu, 22 Aug 2024 08:12:03 -0700 (PDT) From: Joey Gouly To: linux-arm-kernel@lists.infradead.org Cc: nd@arm.com, akpm@linux-foundation.org, aneesh.kumar@kernel.org, aneesh.kumar@linux.ibm.com, anshuman.khandual@arm.com, bp@alien8.de, broonie@kernel.org, catalin.marinas@arm.com, christophe.leroy@csgroup.eu, dave.hansen@linux.intel.com, hpa@zytor.com, joey.gouly@arm.com, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org, maz@kernel.org, mingo@redhat.com, mpe@ellerman.id.au, naveen.n.rao@linux.ibm.com, npiggin@gmail.com, oliver.upton@linux.dev, shuah@kernel.org, skhan@linuxfoundation.org, szabolcs.nagy@arm.com, tglx@linutronix.de, will@kernel.org, x86@kernel.org, kvmarm@lists.linux.dev, linux-kselftest@vger.kernel.org Subject: [PATCH v5 10/30] KVM: arm64: Sanitise ID_AA64MMFR3_EL1 Date: Thu, 22 Aug 2024 16:10:53 +0100 Message-Id: <20240822151113.1479789-11-joey.gouly@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240822151113.1479789-1-joey.gouly@arm.com> References: <20240822151113.1479789-1-joey.gouly@arm.com> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add the missing sanitisation of ID_AA64MMFR3_EL1, making sure we solely expose S1POE and TCRX (we currently don't support anything else). [joey: Took Marc's patch for S1PIE, and changed it for S1POE] Signed-off-by: Marc Zyngier Signed-off-by: Joey Gouly --- arch/arm64/kvm/sys_regs.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git arch/arm64/kvm/sys_regs.c arch/arm64/kvm/sys_regs.c index e7208b59ea12..0f13378e761c 100644 --- arch/arm64/kvm/sys_regs.c +++ arch/arm64/kvm/sys_regs.c @@ -1556,6 +1556,9 @@ static u64 __kvm_read_sanitised_id_reg(const struct kvm_vcpu *vcpu, case SYS_ID_AA64MMFR2_EL1: val &= ~ID_AA64MMFR2_EL1_CCIDX_MASK; break; + case SYS_ID_AA64MMFR3_EL1: + val &= ID_AA64MMFR3_EL1_TCRX | ID_AA64MMFR3_EL1_S1POE; + break; case SYS_ID_MMFR4_EL1: val &= ~ARM64_FEATURE_MASK(ID_MMFR4_EL1_CCIDX); break; @@ -2427,7 +2430,8 @@ static const struct sys_reg_desc sys_reg_descs[] = { ID_AA64MMFR2_EL1_IDS | ID_AA64MMFR2_EL1_NV | ID_AA64MMFR2_EL1_CCIDX)), - ID_SANITISED(ID_AA64MMFR3_EL1), + ID_WRITABLE(ID_AA64MMFR3_EL1, (ID_AA64MMFR3_EL1_TCRX | + ID_AA64MMFR3_EL1_S1POE)), ID_SANITISED(ID_AA64MMFR4_EL1), ID_UNALLOCATED(7,5), ID_UNALLOCATED(7,6),