AMD's "disable CPUID in usermode" feature is analogous to Intel's "CPUID faulting" feature, but it is advertised and activated differently. The AMD feature is advertised via CPUID.80000021H:EAX.CpuidUserDis[bit 17] and activated by setting HWCR.CpuidUserDis[bit 35].
Add virtualization support for the AMD feature. v1 -> v2: * Remove supports_cpuid_fault() instead of renaming it [Sean] v1: https://lore.kernel.org/kvm/[email protected]/ Jim Mattson (3): KVM: x86: Remove supports_cpuid_fault() helper KVM: x86: Virtualize AMD CPUID faulting KVM: selftests: Update hwcr_msr_test for CPUID faulting bit arch/x86/kvm/cpuid.c | 2 +- arch/x86/kvm/cpuid.h | 11 ++++------ arch/x86/kvm/emulate.c | 14 +++++++------ arch/x86/kvm/x86.c | 21 ++++++++++++------- .../testing/selftests/kvm/x86/hwcr_msr_test.c | 10 ++++----- 5 files changed, 32 insertions(+), 26 deletions(-) base-commit: 85f871f6ba46f20d7fbc0b016b4db648c33220dd -- 2.54.0.563.g4f69b47b94-goog
