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authorDavidlohr Bueso <dave@gnu.org>2012-03-08 12:45:54 +0100
committerAvi Kivity <avi@redhat.com>2012-04-08 14:03:13 +0300
commitc36fc04ef558c95cff46a8c89d2f804f217335f5 (patch)
tree98f5fcb78a62fd2c1a33f89a8dea0c9f5074aaef /arch/x86
parente9bda3b3d0ce775afe15eaf71922d342cc74991c (diff)
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op-kernel-dev-c36fc04ef558c95cff46a8c89d2f804f217335f5.tar.gz
KVM: x86: add paging gcc optimization
Since most guests will have paging enabled for memory management, add likely() optimization around CR0.PG checks. Signed-off-by: Davidlohr Bueso <dave@gnu.org> Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/kvm/x86.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kvm/x86.h b/arch/x86/kvm/x86.h
index cb80c29..3d1134d 100644
--- a/arch/x86/kvm/x86.h
+++ b/arch/x86/kvm/x86.h
@@ -64,7 +64,7 @@ static inline int is_pse(struct kvm_vcpu *vcpu)
static inline int is_paging(struct kvm_vcpu *vcpu)
{
- return kvm_read_cr0_bits(vcpu, X86_CR0_PG);
+ return likely(kvm_read_cr0_bits(vcpu, X86_CR0_PG));
}
static inline u32 bit(int bitno)
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