[PATCH v2 2/7] KVM: VMX: Use precomputed vmx->pt_desc.addr_range

[Xiaoyao Li]

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

Signed-off-by: Xiaoyao Li <xiaoyao.li@xxxxxxxxx>
---
Changes in v2:
 - Refine comment to use 'precomputed' instead of 'cached'
 - Use precomputed value in vmx_get_msr() as well
---
 arch/x86/kvm/vmx/vmx.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index 5535a86aea37..96a2df65678f 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -1889,8 +1889,7 @@ 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];
@@ -2205,8 +2204,7 @@ 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;
-- 
2.27.0