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| author |   Jim Mattson <jmattson@google.com> | 2024-10-11 14:43:52 -0700 |
|---|---|---|
| committer |   Sean Christopherson <seanjc@google.com> | 2024-11-01 09:22:19 -0700 |
| commit | 71dd5d5300d228fbfd816a620250a62bfacdd902 (patch) | |
| tree | 3afcceee8fb911ce3bb006844aa92dc5a659e997 | |
| parent | KVM: x86: Ensure vcpu->mode is loaded from memory in kvm_vcpu_exit_request() (diff) | |
| download | wireguard-linux-71dd5d5300d228fbfd816a620250a62bfacdd902.tar.xz wireguard-linux-71dd5d5300d228fbfd816a620250a62bfacdd902.zip | |
KVM: x86: Advertise AMD_IBPB_RET to userspace
This is an inherent feature of IA32_PRED_CMD[0], so it is trivially
virtualizable (as long as IA32_PRED_CMD[0] is virtualized).
Suggested-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Jim Mattson <jmattson@google.com>
Reviewed-by: Tom Lendacky <thomas.lendacky@amd.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20241011214353.1625057-4-jmattson@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
| -rw-r--r-- | arch/x86/kvm/cpuid.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c index 41786b834b16..53112669be00 100644 --- a/arch/x86/kvm/cpuid.c +++ b/arch/x86/kvm/cpuid.c @@ -755,7 +755,7 @@ void kvm_set_cpu_caps(void) F(CLZERO) | F(XSAVEERPTR) | F(WBNOINVD) | F(AMD_IBPB) | F(AMD_IBRS) | F(AMD_SSBD) | F(VIRT_SSBD) | F(AMD_SSB_NO) | F(AMD_STIBP) | F(AMD_STIBP_ALWAYS_ON) | - F(AMD_PSFD) + F(AMD_PSFD) | F(AMD_IBPB_RET) ); /* |