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| author | Avi Kivity <avi@redhat.com> | 2010-12-05 18:56:11 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2011-01-12 11:31:16 +0200 |
| commit | aff48baa34c033318ad322ecbf2e4bcd891b29ca (patch) | |
| tree | 84955c55c812dd540cd0c54e5bdf6d3f5bfd08be /arch/x86/include/asm | |
| parent | 9f8fe5043fd26627c2fa2e9a41896885e675000b (diff) | |
| download | kernel_samsung_smdk4412-aff48baa34c033318ad322ecbf2e4bcd891b29ca.zip kernel_samsung_smdk4412-aff48baa34c033318ad322ecbf2e4bcd891b29ca.tar.gz kernel_samsung_smdk4412-aff48baa34c033318ad322ecbf2e4bcd891b29ca.tar.bz2 | |
KVM: Fetch guest cr3 from hardware on demand
Instead of syncing the guest cr3 every exit, which is expensince on vmx
with ept enabled, sync it only on demand.
[sheng: fix incorrect cr3 seen by Windows XP]
Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86/include/asm')
| -rw-r--r-- | arch/x86/include/asm/kvm_host.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 6268f6c..95f026b 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -117,6 +117,7 @@ enum kvm_reg { enum kvm_reg_ex { VCPU_EXREG_PDPTR = NR_VCPU_REGS, + VCPU_EXREG_CR3, }; enum { @@ -533,6 +534,7 @@ struct kvm_x86_ops { struct kvm_segment *var, int seg); void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l); void (*decache_cr0_guest_bits)(struct kvm_vcpu *vcpu); + void (*decache_cr3)(struct kvm_vcpu *vcpu); void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu); void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0); void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3); |