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authorSean Christopherson2021-09-10 11:32:20 -0700
committerPaolo Bonzini2021-09-22 10:33:12 -0400
commit94c245a245ff6552a320257f97d5171d03f7ee3a (patch)
tree30f926ef8633470dc9457da64f306e114c2d0a7b /arch/x86
parent4eeef2424153e79910d65248b5e1abf137d050e9 (diff)
KVM: x86: Identify vCPU0 by its vcpu_idx instead of its vCPUs array entry
Use vcpu_idx to identify vCPU0 when updating HyperV's TSC page, which is shared by all vCPUs and "owned" by vCPU0 (because vCPU0 is the only vCPU that's guaranteed to exist). Using kvm_get_vcpu() to find vCPU works, but it's a rather odd and suboptimal method to check the index of a given vCPU. No functional change intended. Signed-off-by: Sean Christopherson <seanjc@google.com> Reviewed-by: Jim Mattson <jmattson@google.com> Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com> Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com> Message-Id: <20210910183220.2397812-3-seanjc@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/kvm/x86.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 42c5c7a195ae..11017c94f0aa 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -2969,7 +2969,7 @@ static int kvm_guest_time_update(struct kvm_vcpu *v)
offsetof(struct compat_vcpu_info, time));
if (vcpu->xen.vcpu_time_info_set)
kvm_setup_pvclock_page(v, &vcpu->xen.vcpu_time_info_cache, 0);
- if (v == kvm_get_vcpu(v->kvm, 0))
+ if (!v->vcpu_idx)
kvm_hv_setup_tsc_page(v->kvm, &vcpu->hv_clock);
return 0;
}