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| author | Gleb Natapov <gleb@redhat.com> | 2010-04-28 19:15:29 +0300 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2010-08-01 10:35:31 +0300 |
| commit | 5951c4423724759906b10a26aa6a8817c4afa615 (patch) | |
| tree | 552b885e950cf61e841534cbefd0231f9ad0992d /arch/x86/include/asm/kvm_emulate.h | |
| parent | 3fb1b5dbd397d16a855c97c3fb80fe6e9196ce7c (diff) | |
| download | op-kernel-dev-5951c4423724759906b10a26aa6a8817c4afa615.zip op-kernel-dev-5951c4423724759906b10a26aa6a8817c4afa615.tar.gz | |
KVM: x86 emulator: add get_cached_segment_base() callback to x86_emulate_ops
On VMX it is expensive to call get_cached_descriptor() just to get segment
base since multiple vmcs_reads are done instead of only one. Introduce
new call back get_cached_segment_base() for efficiency.
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86/include/asm/kvm_emulate.h')
| -rw-r--r-- | arch/x86/include/asm/kvm_emulate.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/include/asm/kvm_emulate.h b/arch/x86/include/asm/kvm_emulate.h index f751657..df53ba2 100644 --- a/arch/x86/include/asm/kvm_emulate.h +++ b/arch/x86/include/asm/kvm_emulate.h @@ -132,6 +132,7 @@ struct x86_emulate_ops { int seg, struct kvm_vcpu *vcpu); u16 (*get_segment_selector)(int seg, struct kvm_vcpu *vcpu); void (*set_segment_selector)(u16 sel, int seg, struct kvm_vcpu *vcpu); + unsigned long (*get_cached_segment_base)(int seg, struct kvm_vcpu *vcpu); void (*get_gdt)(struct desc_ptr *dt, struct kvm_vcpu *vcpu); ulong (*get_cr)(int cr, struct kvm_vcpu *vcpu); void (*set_cr)(int cr, ulong val, struct kvm_vcpu *vcpu); |
