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| author | Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> | 2011-07-12 03:23:20 +0800 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2011-07-24 11:50:26 +0300 |
| commit | bebb106a5afa32efdf5332ed4a40bf4d6d06b56e (patch) | |
| tree | b8da141e846c9d25fbe4c69b12582cada03726e3 /arch/x86/include/asm/kvm_host.h | |
| parent | af7cc7d1ee422a612f6785e347a893d44cc892ea (diff) | |
| download | blackbird-op-linux-bebb106a5afa32efdf5332ed4a40bf4d6d06b56e.tar.gz blackbird-op-linux-bebb106a5afa32efdf5332ed4a40bf4d6d06b56e.zip | |
KVM: MMU: cache mmio info on page fault path
If the page fault is caused by mmio, we can cache the mmio info, later, we do
not need to walk guest page table and quickly know it is a mmio fault while we
emulate the mmio instruction
Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86/include/asm/kvm_host.h')
| -rw-r--r-- | arch/x86/include/asm/kvm_host.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 59086a77ff13..8da1400ab581 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -424,6 +424,11 @@ struct kvm_vcpu_arch { u64 mcg_ctl; u64 *mce_banks; + /* Cache MMIO info */ + u64 mmio_gva; + unsigned access; + gfn_t mmio_gfn; + /* used for guest single stepping over the given code position */ unsigned long singlestep_rip; |
