KVM: X86: Rename kvm_compute_tsc_offset() to kvm_compute_l1_tsc_offset()

All existing code uses kvm_compute_tsc_offset() passing L1 TSC values to
it. Let's document this by renaming it to kvm_compute_l1_tsc_offset().

Signed-off-by: Ilias Stamatis <ilstam@amazon.com>
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20210526184418.28881-4-ilstam@amazon.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 571ee7e..a1338bf 100644 (file)
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -2319,7 +2319,7 @@ u64 kvm_scale_tsc(struct kvm_vcpu *vcpu, u64 tsc)
 }
 EXPORT_SYMBOL_GPL(kvm_scale_tsc);
 
-static u64 kvm_compute_tsc_offset(struct kvm_vcpu *vcpu, u64 target_tsc)
+static u64 kvm_compute_l1_tsc_offset(struct kvm_vcpu *vcpu, u64 target_tsc)
 {
        u64 tsc;
 
@@ -2363,7 +2363,7 @@ static void kvm_synchronize_tsc(struct kvm_vcpu *vcpu, u64 data)
        bool synchronizing = false;
 
        raw_spin_lock_irqsave(&kvm->arch.tsc_write_lock, flags);
-       offset = kvm_compute_tsc_offset(vcpu, data);
+       offset = kvm_compute_l1_tsc_offset(vcpu, data);
        ns = get_kvmclock_base_ns();
        elapsed = ns - kvm->arch.last_tsc_nsec;
 
@@ -2402,7 +2402,7 @@ static void kvm_synchronize_tsc(struct kvm_vcpu *vcpu, u64 data)
                } else {
                        u64 delta = nsec_to_cycles(vcpu, elapsed);
                        data += delta;
-                       offset = kvm_compute_tsc_offset(vcpu, data);
+                       offset = kvm_compute_l1_tsc_offset(vcpu, data);
                }
                matched = true;
                already_matched = (vcpu->arch.this_tsc_generation == kvm->arch.cur_tsc_generation);
@@ -3252,7 +3252,7 @@ int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
                if (msr_info->host_initiated) {
                        kvm_synchronize_tsc(vcpu, data);
                } else {
-                       u64 adj = kvm_compute_tsc_offset(vcpu, data) - vcpu->arch.l1_tsc_offset;
+                       u64 adj = kvm_compute_l1_tsc_offset(vcpu, data) - vcpu->arch.l1_tsc_offset;
                        adjust_tsc_offset_guest(vcpu, adj);
                        vcpu->arch.ia32_tsc_adjust_msr += adj;
                }
@@ -4140,7 +4140,7 @@ void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
                        mark_tsc_unstable("KVM discovered backwards TSC");
 
                if (kvm_check_tsc_unstable()) {
-                       u64 offset = kvm_compute_tsc_offset(vcpu,
+                       u64 offset = kvm_compute_l1_tsc_offset(vcpu,
                                                vcpu->arch.last_guest_tsc);
                        kvm_vcpu_write_tsc_offset(vcpu, offset);
                        vcpu->arch.tsc_catchup = 1;