On 8/7/2023 9:16 AM, Chao Gao wrote:
+ if (kvm_cpu_cap_has(X86_FEATURE_IBT)) {
+ incpt = !guest_can_use(vcpu, X86_FEATURE_IBT);
can you use guest_can_use() or guest_cpuid_has() consistently?
Hmm, the inspiration actually came from Sean:
Re: [RFC PATCH v2 3/6] KVM: x86: SVM: Pass through shadow stack MSRs - Sean Christopherson (kernel.org) <https://lore.kernel.org/all/ZMk14YiPw9l7ZTXP@xxxxxxxxxx/>
it would make the code more reasonable on non-CET platforms.
then, can you switch to use guest_cpuid_has() for IBT here as you do a few
lines above for the SHSTK? that's why I said "consistently".
Oh, I should use guest_cpuid_has() instead of guest_can_use() here, thanks!
