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| author | Nadav Har'El <nyh@il.ibm.com> | 2013-08-05 11:07:17 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2013-08-07 15:57:42 +0200 |
| commit | bfd0a56b90005f8c8a004baf407ad90045c2b11e (patch) | |
| tree | c1e3a6e26b119d1c818deb4ae5079fd2676855bc /arch/x86/include/uapi/asm/vmx.h | |
| parent | 155a97a3d7c78b46cef6f1a973c831bc5a4f82bb (diff) | |
| download | linux-0-day-bfd0a56b90005f8c8a004baf407ad90045c2b11e.tar.gz linux-0-day-bfd0a56b90005f8c8a004baf407ad90045c2b11e.tar.xz | |
nEPT: Nested INVEPT
If we let L1 use EPT, we should probably also support the INVEPT instruction.
In our current nested EPT implementation, when L1 changes its EPT table
for L2 (i.e., EPT12), L0 modifies the shadow EPT table (EPT02), and in
the course of this modification already calls INVEPT. But if last level
of shadow page is unsync not all L1's changes to EPT12 are intercepted,
which means roots need to be synced when L1 calls INVEPT. Global INVEPT
should not be different since roots are synced by kvm_mmu_load() each
time EPTP02 changes.
Reviewed-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Signed-off-by: Nadav Har'El <nyh@il.ibm.com>
Signed-off-by: Jun Nakajima <jun.nakajima@intel.com>
Signed-off-by: Xinhao Xu <xinhao.xu@intel.com>
Signed-off-by: Yang Zhang <yang.z.zhang@Intel.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/include/uapi/asm/vmx.h')
| -rw-r--r-- | arch/x86/include/uapi/asm/vmx.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/include/uapi/asm/vmx.h b/arch/x86/include/uapi/asm/vmx.h index d651082c7cf72..7a34e8fe54bd1 100644 --- a/arch/x86/include/uapi/asm/vmx.h +++ b/arch/x86/include/uapi/asm/vmx.h @@ -65,6 +65,7 @@ #define EXIT_REASON_EOI_INDUCED 45 #define EXIT_REASON_EPT_VIOLATION 48 #define EXIT_REASON_EPT_MISCONFIG 49 +#define EXIT_REASON_INVEPT 50 #define EXIT_REASON_PREEMPTION_TIMER 52 #define EXIT_REASON_WBINVD 54 #define EXIT_REASON_XSETBV 55 |