From: John Allen <john.allen@amd.com>
To: <kvm@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<x86@kernel.org>, <seanjc@google.com>, <pbonzini@redhat.com>,
<dave.hansen@intel.com>
Cc: <rick.p.edgecombe@intel.com>, <mlevitsk@redhat.com>,
<weijiang.yang@intel.com>, <chao.gao@intel.com>, <bp@alien8.de>,
<dave.hansen@linux.intel.com>, <hpa@zytor.com>,
<mingo@redhat.com>, <tglx@linutronix.de>,
<thomas.lendacky@amd.com>, John Allen <john.allen@amd.com>
Subject: [PATCH v3 5/5] KVM: SVM: Enable shadow stack virtualization for SVM
Date: Wed, 6 Aug 2025 20:45:10 +0000 [thread overview]
Message-ID: <20250806204510.59083-6-john.allen@amd.com> (raw)
In-Reply-To: <20250806204510.59083-1-john.allen@amd.com>
Remove the explicit clearing of shadow stack CPU capabilities.
Signed-off-by: John Allen <john.allen@amd.com>
---
v3:
- New in v3.
---
arch/x86/kvm/svm/svm.c | 5 -----
1 file changed, 5 deletions(-)
diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c
index 82cde3578c96..b67aa546d8f4 100644
--- a/arch/x86/kvm/svm/svm.c
+++ b/arch/x86/kvm/svm/svm.c
@@ -5255,11 +5255,6 @@ static __init void svm_set_cpu_caps(void)
kvm_set_cpu_caps();
kvm_caps.supported_perf_cap = 0;
- kvm_caps.supported_xss = 0;
-
- /* KVM doesn't yet support CET virtualization for SVM. */
- kvm_cpu_cap_clear(X86_FEATURE_SHSTK);
- kvm_cpu_cap_clear(X86_FEATURE_IBT);
/* CPUID 0x80000001 and 0x8000000A (SVM features) */
if (nested) {
--
2.34.1
next prev parent reply other threads:[~2025-08-06 20:46 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-06 20:45 [PATCH v3 0/5] Enable Shadow Stack Virtualization " John Allen
2025-08-06 20:45 ` [PATCH v3 1/5] KVM: x86: SVM: Emulate reads and writes to shadow stack MSRs John Allen
2025-08-25 1:27 ` Chao Gao
2025-08-06 20:45 ` [PATCH v3 2/5] KVM: x86: SVM: Update dump_vmcb with shadow stack save area additions John Allen
2025-08-22 20:57 ` Tom Lendacky
2025-08-06 20:45 ` [PATCH v3 3/5] KVM: x86: SVM: Pass through shadow stack MSRs John Allen
2025-08-25 1:21 ` Chao Gao
2025-08-06 20:45 ` [PATCH v3 4/5] KVM: SVM: Add MSR_IA32_XSS to the GHCB for hypervisor kernel John Allen
2025-08-25 1:46 ` Chao Gao
2025-08-06 20:45 ` John Allen [this message]
2025-08-25 1:33 ` [PATCH v3 5/5] KVM: SVM: Enable shadow stack virtualization for SVM Chao Gao
2025-09-03 21:01 ` John Allen
2025-09-05 20:50 ` Chao Gao
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