From: Borislav Petkov <bp@kernel.org>
To: Paolo Bonzini <pbonzini@redhat.com>,
Sean Christopherson <seanjc@google.com>
Cc: X86 ML <x86@kernel.org>, KVM <kvm@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
"Borislav Petkov (AMD)" <bp@alien8.de>
Subject: [PATCH] KVM: x86: Sort CPUID_8000_0021_EAX leaf bits properly
Date: Mon, 24 Mar 2025 17:06:17 +0100 [thread overview]
Message-ID: <20250324160617.15379-1-bp@kernel.org> (raw)
From: "Borislav Petkov (AMD)" <bp@alien8.de>
WRMSR_XX_BASE_NS is bit 1 so put it there, add some new bits as
comments only.
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
---
arch/x86/kvm/cpuid.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c
index 121edf1f2a79..e98ab18f784b 100644
--- a/arch/x86/kvm/cpuid.c
+++ b/arch/x86/kvm/cpuid.c
@@ -1160,6 +1160,7 @@ void kvm_set_cpu_caps(void)
kvm_cpu_cap_init(CPUID_8000_0021_EAX,
F(NO_NESTED_DATA_BP),
+ F(WRMSR_XX_BASE_NS),
/*
* Synthesize "LFENCE is serializing" into the AMD-defined entry
* in KVM's supported CPUID, i.e. if the feature is reported as
@@ -1173,10 +1174,14 @@ void kvm_set_cpu_caps(void)
SYNTHESIZED_F(LFENCE_RDTSC),
/* SmmPgCfgLock */
F(NULL_SEL_CLR_BASE),
+ /* UpperAddressIgnore */
F(AUTOIBRS),
EMULATED_F(NO_SMM_CTL_MSR),
+ /* FSRS */
+ /* FSRC */
/* PrefetchCtlMsr */
- F(WRMSR_XX_BASE_NS),
+ /* GpOnUserCpuid */
+ /* EPSF */
SYNTHESIZED_F(SBPB),
SYNTHESIZED_F(IBPB_BRTYPE),
SYNTHESIZED_F(SRSO_NO),
--
2.43.0
next reply other threads:[~2025-03-24 16:06 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-24 16:06 Borislav Petkov [this message]
2025-04-10 21:46 ` [PATCH] KVM: x86: Sort CPUID_8000_0021_EAX leaf bits properly Sean Christopherson
2025-04-11 9:45 ` Borislav Petkov
2025-04-25 22:09 ` Sean Christopherson
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