diff options
| author | Avi Kivity <avi@redhat.com> | 2010-10-21 12:20:31 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2011-01-12 11:23:29 +0200 |
| commit | 13c34e073bec75aa4c8d1bb80c10fd7291f3423a (patch) | |
| tree | 4fa0808d6c262ca4b1277d613909b2af2ec85ca7 /arch | |
| parent | d4c90b0043bdb40a6f340d34b2ac1861040de88c (diff) | |
| download | op-kernel-dev-13c34e073bec75aa4c8d1bb80c10fd7291f3423a.zip op-kernel-dev-13c34e073bec75aa4c8d1bb80c10fd7291f3423a.tar.gz | |
KVM: SVM: Move guest register save out of interrupts disabled section
Saving guest registers is just a memory copy, and does not need to be in the
critical section. Move outside the critical section to improve latency a
bit.
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kvm/svm.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index 93e8120..8035496 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -3412,11 +3412,6 @@ static void svm_vcpu_run(struct kvm_vcpu *vcpu) #endif ); - vcpu->arch.cr2 = svm->vmcb->save.cr2; - vcpu->arch.regs[VCPU_REGS_RAX] = svm->vmcb->save.rax; - vcpu->arch.regs[VCPU_REGS_RSP] = svm->vmcb->save.rsp; - vcpu->arch.regs[VCPU_REGS_RIP] = svm->vmcb->save.rip; - load_host_msrs(vcpu); kvm_load_ldt(ldt_selector); loadsegment(fs, fs_selector); @@ -3433,6 +3428,11 @@ static void svm_vcpu_run(struct kvm_vcpu *vcpu) stgi(); + vcpu->arch.cr2 = svm->vmcb->save.cr2; + vcpu->arch.regs[VCPU_REGS_RAX] = svm->vmcb->save.rax; + vcpu->arch.regs[VCPU_REGS_RSP] = svm->vmcb->save.rsp; + vcpu->arch.regs[VCPU_REGS_RIP] = svm->vmcb->save.rip; + sync_cr8_to_lapic(vcpu); svm->next_rip = 0; |
