diff options
| author | Paul Durrant <pdurrant@amazon.com> | 2023-01-06 13:36:00 +0300 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2023-01-24 21:05:20 +0300 |
| commit | f422f853af0369be27d2a9f1b20079f2bc3d1ca2 (patch) | |
| tree | 2e4b182f4c52c9dd41ae7836d9680b27cdfff6a1 /arch/x86/kvm/x86.c | |
| parent | 48639df8a9e3a1dfcb5880f77556681bd1e53657 (diff) | |
| download | linux-f422f853af0369be27d2a9f1b20079f2bc3d1ca2.tar.xz | |
KVM: x86/xen: update Xen CPUID Leaf 4 (tsc info) sub-leaves, if present
The scaling information in subleaf 1 should match the values set by KVM in
the 'vcpu_info' sub-structure 'time_info' (a.k.a. pvclock_vcpu_time_info)
which is shared with the guest, but is not directly available to the VMM.
The offset values are not set since a TSC offset is already applied.
The TSC frequency should also be set in sub-leaf 2.
Signed-off-by: Paul Durrant <pdurrant@amazon.com>
Reviewed-by: David Woodhouse <dwmw@amazon.co.uk>
Link: https://lore.kernel.org/r/20230106103600.528-3-pdurrant@amazon.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Diffstat (limited to 'arch/x86/kvm/x86.c')
| -rw-r--r-- | arch/x86/kvm/x86.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index fc3ae3ccd005..65b401e94cec 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -3161,6 +3161,7 @@ static int kvm_guest_time_update(struct kvm_vcpu *v) &vcpu->hv_clock.tsc_shift, &vcpu->hv_clock.tsc_to_system_mul); vcpu->hw_tsc_khz = tgt_tsc_khz; + kvm_xen_update_tsc_info(v); } vcpu->hv_clock.tsc_timestamp = tsc_timestamp; |