diff options
| author | Sean Christopherson <sean.j.christopherson@intel.com> | 2020-09-24 12:42:50 -0700 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-09-28 07:57:27 -0400 |
| commit | 7096cbfb6cb63420f333d0ba238d1a857ba3f290 (patch) | |
| tree | 862874fc6eee36ba3f21aafb1e6c0cd5246a5449 /arch/x86/kvm/vmx/vmx.c | |
| parent | dc46515cf838e37c602016cc905df051e06cb8ea (diff) | |
KVM: VMX: Use "illegal GPA" helper for PT/RTIT output base check
Use kvm_vcpu_is_illegal_gpa() to check for a legal GPA when validating a
PT output base instead of open coding a clever, but difficult to read,
variant. Code readability is far more important than shaving a few uops
in a slow path.
No functional change intended.
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Message-Id: <20200924194250.19137-6-sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/vmx/vmx.c')
| -rw-r--r-- | arch/x86/kvm/vmx/vmx.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index 4e372b4e102d..2c1abe964b76 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -1037,7 +1037,7 @@ static inline bool pt_can_write_msr(struct vcpu_vmx *vmx) static inline bool pt_output_base_valid(struct kvm_vcpu *vcpu, u64 base) { /* The base must be 128-byte aligned and a legal physical address. */ - return !(base & (~((1UL << cpuid_maxphyaddr(vcpu)) - 1) | 0x7f)); + return !kvm_vcpu_is_illegal_gpa(vcpu, base) && !(base & 0x7f); } static inline void pt_load_msr(struct pt_ctx *ctx, u32 addr_range) |