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| author | Sean Christopherson <sean.j.christopherson@intel.com> | 2019-12-18 00:32:38 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-01-21 15:58:22 +0300 |
| commit | 5ae78e95ed0c771935d0d24291d221312524830c (patch) | |
| tree | 71f114e4508e31d0c43cd986c141dc4f03e96acb /arch/x86/include | |
| parent | 345599f9a292899bf5474651f3cea9b7a0576436 (diff) | |
| download | linux-5ae78e95ed0c771935d0d24291d221312524830c.tar.xz | |
KVM: x86: Add dedicated emulator helpers for querying CPUID features
Add feature-specific helpers for querying guest CPUID support from the
emulator instead of having the emulator do a full CPUID and perform its
own bit tests. The primary motivation is to eliminate the emulator's
usage of bit() so that future patches can add more extensive build-time
assertions on the usage of bit() without having to expose yet more code
to the emulator.
Note, providing a generic guest_cpuid_has() to the emulator doesn't work
due to the existing built-time assertions in guest_cpuid_has(), which
require the feature being checked to be a compile-time constant.
No functional change intended.
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/kvm_emulate.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/include/asm/kvm_emulate.h b/arch/x86/include/asm/kvm_emulate.h index 77cf6c11f66b..03946eb3e2b9 100644 --- a/arch/x86/include/asm/kvm_emulate.h +++ b/arch/x86/include/asm/kvm_emulate.h @@ -222,6 +222,10 @@ struct x86_emulate_ops { bool (*get_cpuid)(struct x86_emulate_ctxt *ctxt, u32 *eax, u32 *ebx, u32 *ecx, u32 *edx, bool check_limit); + bool (*guest_has_long_mode)(struct x86_emulate_ctxt *ctxt); + bool (*guest_has_movbe)(struct x86_emulate_ctxt *ctxt); + bool (*guest_has_fxsr)(struct x86_emulate_ctxt *ctxt); + void (*set_nmi_mask)(struct x86_emulate_ctxt *ctxt, bool masked); unsigned (*get_hflags)(struct x86_emulate_ctxt *ctxt); |