diff options
| author | Joerg Roedel <joerg.roedel@amd.com> | 2011-04-18 13:42:53 +0400 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2011-05-11 15:57:10 +0400 |
| commit | 7c4c0f4fd5c3e82234c0ab61c7e7ffdb8f3af07b (patch) | |
| tree | f814169205d55c01702c880e9610e5bb97c09924 /arch | |
| parent | 977b2d03e42e9ea9355d4baddb464810579719bd (diff) | |
| download | linux-7c4c0f4fd5c3e82234c0ab61c7e7ffdb8f3af07b.tar.xz | |
KVM: X86: Update last_guest_tsc in vcpu_put
The last_guest_tsc is used in vcpu_load to adjust the
tsc_offset since tsc-scaling is merged. So the
last_guest_tsc needs to be updated in vcpu_put instead of
the the last_host_tsc. This is fixed with this patch.
Reported-by: Jan Kiszka <jan.kiszka@web.de>
Tested-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/include/asm/kvm_host.h | 1 | ||||
| -rw-r--r-- | arch/x86/kvm/x86.c | 2 |
2 files changed, 1 insertions, 2 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 3e03f37f43ea..e50bffcf3cc0 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -393,7 +393,6 @@ struct kvm_vcpu_arch { unsigned int hw_tsc_khz; unsigned int time_offset; struct page *time_page; - u64 last_host_tsc; u64 last_guest_tsc; u64 last_kernel_ns; u64 last_tsc_nsec; diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index b05e3fcce298..6aa137701cda 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -2146,7 +2146,7 @@ void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu) { kvm_x86_ops->vcpu_put(vcpu); kvm_put_guest_fpu(vcpu); - vcpu->arch.last_host_tsc = native_read_tsc(); + kvm_get_msr(vcpu, MSR_IA32_TSC, &vcpu->arch.last_guest_tsc); } static int is_efer_nx(void) |