KVM: SVM: Pass through shadow stack MSRs as appropriate

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Pass through XSAVE managed CET MSRs on SVM when KVM supports shadow
stack. These cannot be intercepted without also intercepting XSAVE which
would likely cause unacceptable performance overhead.
MSR_IA32_INT_SSP_TAB is not managed by XSAVE, so it is intercepted.

Reviewed-by: Chao Gao <chao.gao@intel.com>
Signed-off-by: John Allen <john.allen@amd.com>
Link: https://lore.kernel.org/r/20250919223258.1604852-39-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

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John Allen 2025-09-19 15:32:45 -07:00 • committed by Sean Christopherson

parent c7586aa3be

commit 38c46bdbf9

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arch/x86/kvm/svm/svm.c

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