diff options
| author | Binbin Wu <binbin.wu@linux.intel.com> | 2023-09-13 15:42:15 +0300 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2023-11-29 04:54:03 +0300 |
| commit | 538ac9a92d669c4ccfc64739a32efab2793cea1d (patch) | |
| tree | 6ca89f17aaa60509694d769fbb20da59c0855866 /arch/x86/kvm/emulate.c | |
| parent | 3963c52df42231f72277cd138994ac94f1183d2b (diff) | |
| download | linux-538ac9a92d669c4ccfc64739a32efab2793cea1d.tar.xz | |
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/emulate.c')
| -rw-r--r-- | arch/x86/kvm/emulate.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index 87ee1802166a..ceec8c5f9687 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -3440,8 +3440,10 @@ static int em_invlpg(struct x86_emulate_ctxt *ctxt) { int rc; ulong linear; + unsigned int max_size; - rc = linearize(ctxt, ctxt->src.addr.mem, 1, false, &linear); + rc = __linearize(ctxt, ctxt->src.addr.mem, &max_size, 1, ctxt->mode, + &linear, X86EMUL_F_INVLPG); if (rc == X86EMUL_CONTINUE) ctxt->ops->invlpg(ctxt, linear); /* Disable writeback. */ |