This patch replaces them with native_read_tsc() which can
also be used in expressions and saves a variable on the
stack in this case.
Signed-off-by: Joerg Roedel <joerg.roedel@xxxxxxx>
---
arch/x86/kvm/svm.c | 7 +++----
1 files changed, 3 insertions(+), 4 deletions(-)
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index e193cf9..12cef2c 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -758,14 +758,13 @@ static void svm_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
int i;
if (unlikely(cpu != vcpu->cpu)) {
- u64 tsc_this, delta;
+ u64 delta;
/*
* Make sure that the guest sees a monotonically
* increasing TSC.
*/
- rdtscll(tsc_this);
- delta = vcpu->arch.host_tsc - tsc_this;
+ delta = vcpu->arch.host_tsc - native_read_tsc();
svm->vmcb->control.tsc_offset += delta;
if (is_nested(svm))
svm->nested.hsave->control.tsc_offset += delta;
@@ -787,7 +786,7 @@ static void svm_vcpu_put(struct kvm_vcpu *vcpu)
for (i = 0; i < NR_HOST_SAVE_USER_MSRS; i++)
wrmsrl(host_save_user_msrs[i], svm->host_user_msrs[i]);
- rdtscll(vcpu->arch.host_tsc);
+ vcpu->arch.host_tsc = native_read_tsc();
}
static unsigned long svm_get_rflags(struct kvm_vcpu *vcpu)
--
1.6.3.3
--
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