From: John Allen <john.allen@amd.com>
To: <kvm@vger.kernel.org>
Cc: <weijiang.yang@intel.com>, <rick.p.edgecombe@intel.com>,
<seanjc@google.com>, <thomas.lendacky@amd.com>, <bp@alien8.de>,
<pbonzini@redhat.com>, <mlevitsk@redhat.com>,
<linux-kernel@vger.kernel.org>, <x86@kernel.org>,
John Allen <john.allen@amd.com>
Subject: [PATCH v2 9/9] KVM: SVM: Add CET features to supported_xss
Date: Mon, 26 Feb 2024 21:32:44 +0000 [thread overview]
Message-ID: <20240226213244.18441-10-john.allen@amd.com> (raw)
In-Reply-To: <20240226213244.18441-1-john.allen@amd.com>
If the CPU supports CET, add CET XSAVES feature bits to the
supported_xss mask.
Signed-off-by: John Allen <john.allen@amd.com>
---
arch/x86/kvm/svm/svm.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c
index 1181f017c173..d97d82ebec4a 100644
--- a/arch/x86/kvm/svm/svm.c
+++ b/arch/x86/kvm/svm/svm.c
@@ -5177,6 +5177,10 @@ static __init void svm_set_cpu_caps(void)
boot_cpu_has(X86_FEATURE_AMD_SSBD))
kvm_cpu_cap_set(X86_FEATURE_VIRT_SSBD);
+ if (kvm_cpu_cap_has(X86_FEATURE_SHSTK))
+ kvm_caps.supported_xss |= XFEATURE_MASK_CET_USER |
+ XFEATURE_MASK_CET_KERNEL;
+
if (enable_pmu) {
/*
* Enumerate support for PERFCTR_CORE if and only if KVM has
--
2.40.1
next prev parent reply other threads:[~2024-02-26 21:33 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-26 21:32 [PATCH v2 0/9] SVM guest shadow stack support John Allen
2024-02-26 21:32 ` [PATCH v2 1/9] x86/boot: Move boot_*msr helpers to asm/shared/msr.h John Allen
2024-02-27 19:45 ` Borislav Petkov
2024-02-26 21:32 ` [PATCH v2 2/9] KVM: x86: SVM: Emulate reads and writes to shadow stack MSRs John Allen
2024-02-26 21:32 ` [PATCH v2 3/9] KVM: x86: SVM: Update dump_vmcb with shadow stack save area additions John Allen
2024-02-26 21:32 ` [PATCH v2 4/9] KVM: x86: SVM: Pass through shadow stack MSRs John Allen
2024-02-26 21:32 ` [PATCH v2 5/9] KVM: SVM: Rename vmplX_ssp -> plX_ssp John Allen
2024-02-27 18:14 ` Sean Christopherson
2024-02-27 19:15 ` Tom Lendacky
2024-02-27 19:19 ` John Allen
2024-02-27 19:23 ` Sean Christopherson
2024-02-27 19:25 ` John Allen
2024-02-26 21:32 ` [PATCH v2 6/9] KVM: SVM: Add MSR_IA32_XSS to the GHCB for hypervisor kernel John Allen
2024-05-01 23:43 ` Sean Christopherson
2024-05-02 17:46 ` Tom Lendacky
2024-05-02 18:34 ` Sean Christopherson
2024-02-26 21:32 ` [PATCH v2 7/9] x86/sev-es: Include XSS value in GHCB CPUID request John Allen
2024-02-27 19:47 ` Borislav Petkov
2024-02-26 21:32 ` [PATCH v2 8/9] KVM: SVM: Use KVM-governed features to track SHSTK John Allen
2024-02-26 21:32 ` John Allen [this message]
2024-05-01 23:47 ` [PATCH v2 9/9] KVM: SVM: Add CET features to supported_xss Sean Christopherson
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