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| author |   Chao Peng <chao.p.peng@linux.intel.com> | 2018-10-24 16:05:11 +0800 |
|---|---|---|
| committer |   Paolo Bonzini <pbonzini@redhat.com> | 2018-12-21 11:28:35 +0100 |
| commit | 86f5201df0d3e3efc78d3eac7fc5a59b813287cd (patch) | |
| tree | 3f55a8ef84aa81ce4921a82069ece3014f519876 /arch/x86/kvm/vmx/vmx.c | |
| parent | KVM: x86: Add Intel PT virtualization work mode (diff) | |
| download | linux-dev-86f5201df0d3e3efc78d3eac7fc5a59b813287cd.tar.xz linux-dev-86f5201df0d3e3efc78d3eac7fc5a59b813287cd.zip | |
KVM: x86: Add Intel Processor Trace cpuid emulation
Expose Intel Processor Trace to guest only when
the PT works in Host-Guest mode.
Signed-off-by: Chao Peng <chao.p.peng@linux.intel.com>
Signed-off-by: Luwei Kang <luwei.kang@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to '')
| -rw-r--r-- | arch/x86/kvm/vmx/vmx.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index 338977e6f552..f5b88b578bbe 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -5886,6 +5886,11 @@ static bool vmx_has_emulated_msr(int index) } } +static bool vmx_pt_supported(void) +{ + return pt_mode == PT_MODE_HOST_GUEST; +} + static void vmx_recover_nmi_blocking(struct vcpu_vmx *vmx) { u32 exit_intr_info; @@ -7399,6 +7404,7 @@ static struct kvm_x86_ops vmx_x86_ops __ro_after_init = { .mpx_supported = vmx_mpx_supported, .xsaves_supported = vmx_xsaves_supported, .umip_emulated = vmx_umip_emulated, + .pt_supported = vmx_pt_supported, .request_immediate_exit = vmx_request_immediate_exit, |