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| author |   Binbin Wu <binbin.wu@linux.intel.com> | 2023-09-13 20:42:15 +0800 |
|---|---|---|
| committer |   Sean Christopherson <seanjc@google.com> | 2023-11-28 17:54:03 -0800 |
| commit | 538ac9a92d669c4ccfc64739a32efab2793cea1d (patch) | |
| tree | 6ca89f17aaa60509694d769fbb20da59c0855866 /arch/x86/kvm/kvm_emulate.h | |
| parent | KVM: x86: Add an emulation flag for implicit system access (diff) | |
| download | wireguard-linux-538ac9a92d669c4ccfc64739a32efab2793cea1d.tar.xz wireguard-linux-538ac9a92d669c4ccfc64739a32efab2793cea1d.zip | |
KVM: x86: Add X86EMUL_F_INVLPG and pass it in em_invlpg()
Add an emulation flag X86EMUL_F_INVLPG, which is used to identify an
instruction that does TLB invalidation without true memory access.
Only invlpg & invlpga implemented in emulator belong to this kind.
invlpga doesn't need additional information for emulation. Just pass
the flag to em_invlpg().
Linear Address Masking (LAM) and Linear Address Space Separation (LASS)
don't apply to addresses that are inputs to TLB invalidation. The flag
will be consumed to support LAM/LASS virtualization.
Signed-off-by: Binbin Wu <binbin.wu@linux.intel.com>
Tested-by: Xuelian Guo <xuelian.guo@intel.com>
Link: https://lore.kernel.org/r/20230913124227.12574-5-binbin.wu@linux.intel.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Diffstat (limited to 'arch/x86/kvm/kvm_emulate.h')
| -rw-r--r-- | arch/x86/kvm/kvm_emulate.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kvm/kvm_emulate.h b/arch/x86/kvm/kvm_emulate.h index 65fc7ef5ca3d..8bd9b23543cc 100644 --- a/arch/x86/kvm/kvm_emulate.h +++ b/arch/x86/kvm/kvm_emulate.h @@ -92,6 +92,7 @@ struct x86_instruction_info { #define X86EMUL_F_WRITE BIT(0) #define X86EMUL_F_FETCH BIT(1) #define X86EMUL_F_IMPLICIT BIT(2) +#define X86EMUL_F_INVLPG BIT(3) struct x86_emulate_ops { void (*vm_bugged)(struct x86_emulate_ctxt *ctxt); |