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KVM: VMX: Use precomputed vmx->pt_desc.addr_range

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The number of valid PT ADDR MSRs for the guest is precomputed in
vmx->pt_desc.addr_range. Use it instead of calculating again.

Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
Message-Id: <20210827070249.924633-3-xiaoyao.li@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Xiaoyao Li 2021-08-27 15:02:44 +08:00 committed by Paolo Bonzini
parent 2e6e0d683b
commit ba51d62723
1 changed files with 2 additions and 4 deletions
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6
arch/x86/kvm/vmx/vmx.c
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@ -1890,8 +1890,7 @@ static int vmx_get_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
case MSR_IA32_RTIT_ADDR0_A ... MSR_IA32_RTIT_ADDR3_B:
index = msr_info->index - MSR_IA32_RTIT_ADDR0_A;
if (!vmx_pt_mode_is_host_guest() ||
(index >= 2 * intel_pt_validate_cap(vmx->pt_desc.caps,
PT_CAP_num_address_ranges)))
(index >= 2 * vmx->pt_desc.addr_range))
return 1;
if (index % 2)
msr_info->data = vmx->pt_desc.guest.addr_b[index / 2];
@ -2206,8 +2205,7 @@ static int vmx_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
if (!pt_can_write_msr(vmx))
return 1;
index = msr_info->index - MSR_IA32_RTIT_ADDR0_A;
if (index >= 2 * intel_pt_validate_cap(vmx->pt_desc.caps,
PT_CAP_num_address_ranges))
if (index >= 2 * vmx->pt_desc.addr_range)
return 1;
if (is_noncanonical_address(data, vcpu))
return 1;