diff options
| author | Mao, Junjie <junjie.mao@intel.com> | 2012-07-02 01:18:48 +0000 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2012-07-12 13:07:34 +0300 |
| commit | ad756a1603c5fac207758faaac7f01c34c9d0b7b (patch) | |
| tree | 0b01513f1e3434362ab9faf8394cbd158b31386d /arch/x86/include/asm/vmx.h | |
| parent | fc73373b33f5f965f2f82bfbc40ef8e6072e986d (diff) | |
KVM: VMX: Implement PCID/INVPCID for guests with EPT
This patch handles PCID/INVPCID for guests.
Process-context identifiers (PCIDs) are a facility by which a logical processor
may cache information for multiple linear-address spaces so that the processor
may retain cached information when software switches to a different linear
address space. Refer to section 4.10.1 in IA32 Intel Software Developer's Manual
Volume 3A for details.
For guests with EPT, the PCID feature is enabled and INVPCID behaves as running
natively.
For guests without EPT, the PCID feature is disabled and INVPCID triggers #UD.
Signed-off-by: Junjie Mao <junjie.mao@intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86/include/asm/vmx.h')
| -rw-r--r-- | arch/x86/include/asm/vmx.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/include/asm/vmx.h b/arch/x86/include/asm/vmx.h index de007c272730..74fcb963595b 100644 --- a/arch/x86/include/asm/vmx.h +++ b/arch/x86/include/asm/vmx.h @@ -60,6 +60,7 @@ #define SECONDARY_EXEC_WBINVD_EXITING 0x00000040 #define SECONDARY_EXEC_UNRESTRICTED_GUEST 0x00000080 #define SECONDARY_EXEC_PAUSE_LOOP_EXITING 0x00000400 +#define SECONDARY_EXEC_ENABLE_INVPCID 0x00001000 #define PIN_BASED_EXT_INTR_MASK 0x00000001 @@ -281,6 +282,7 @@ enum vmcs_field { #define EXIT_REASON_EPT_MISCONFIG 49 #define EXIT_REASON_WBINVD 54 #define EXIT_REASON_XSETBV 55 +#define EXIT_REASON_INVPCID 58 /* * Interruption-information format |