summaryrefslogtreecommitdiff
path: root/arch/x86/kvm/kvm_cache_regs.h
diff options
context:
space:
mode:
authorAvi Kivity <avi@redhat.com>2009-05-31 23:58:47 +0400
committerAvi Kivity <avi@redhat.com>2009-09-10 09:32:46 +0400
commit6de4f3ada40b336522250a7832a0cc4de8856589 (patch)
tree90920846774aa0fb0fb47ac245fcf5f8b73afcee /arch/x86/kvm/kvm_cache_regs.h
parent8f5d549f028056d6ad6044f2d9e27ecf361d955e (diff)
downloadlinux-6de4f3ada40b336522250a7832a0cc4de8856589.tar.xz
KVM: Cache pdptrs
Instead of reloading the pdptrs on every entry and exit (vmcs writes on vmx, guest memory access on svm) extract them on demand. Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86/kvm/kvm_cache_regs.h')
-rw-r--r--arch/x86/kvm/kvm_cache_regs.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/x86/kvm/kvm_cache_regs.h b/arch/x86/kvm/kvm_cache_regs.h
index 1ff819dce7d3..7bcc5b6a4403 100644
--- a/arch/x86/kvm/kvm_cache_regs.h
+++ b/arch/x86/kvm/kvm_cache_regs.h
@@ -29,4 +29,13 @@ static inline void kvm_rip_write(struct kvm_vcpu *vcpu, unsigned long val)
kvm_register_write(vcpu, VCPU_REGS_RIP, val);
}
+static inline u64 kvm_pdptr_read(struct kvm_vcpu *vcpu, int index)
+{
+ if (!test_bit(VCPU_EXREG_PDPTR,
+ (unsigned long *)&vcpu->arch.regs_avail))
+ kvm_x86_ops->cache_reg(vcpu, VCPU_EXREG_PDPTR);
+
+ return vcpu->arch.pdptrs[index];
+}
+
#endif