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| author | Andre Przywara <andre.przywara@amd.com> | 2010-12-21 13:12:07 +0300 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2011-01-12 12:31:07 +0300 |
| commit | dc25e89e07d5ef31c476117d2c76b34dbb22196c (patch) | |
| tree | 9fef452c4bd0704b9d74512a9a58dc5d5b742d53 /arch/x86/include/asm/svm.h | |
| parent | df4f3108562dc6f6ae6648f2698df7f4c9acf52d (diff) | |
| download | linux-dc25e89e07d5ef31c476117d2c76b34dbb22196c.tar.xz | |
KVM: SVM: copy instruction bytes from VMCB
In case of a nested page fault or an intercepted #PF newer SVM
implementations provide a copy of the faulting instruction bytes
in the VMCB.
Use these bytes to feed the instruction emulator and avoid the costly
guest instruction fetch in this case.
Signed-off-by: Andre Przywara <andre.przywara@amd.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'arch/x86/include/asm/svm.h')
| -rw-r--r-- | arch/x86/include/asm/svm.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/x86/include/asm/svm.h b/arch/x86/include/asm/svm.h index f0ffb8184089..f2b83bc7d784 100644 --- a/arch/x86/include/asm/svm.h +++ b/arch/x86/include/asm/svm.h @@ -83,7 +83,9 @@ struct __attribute__ ((__packed__)) vmcb_control_area { u32 clean; u32 reserved_5; u64 next_rip; - u8 reserved_6[816]; + u8 insn_len; + u8 insn_bytes[15]; + u8 reserved_6[800]; }; |