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

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>

diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index 9a8cd7f..f8539f9 100644 (file)
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -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;