diff options
| -rw-r--r-- | arch/x86/kvm/x86.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index f55654158836..f7806e3f3019 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -1074,6 +1074,18 @@ static void kvm_invalidate_pcid(struct kvm_vcpu *vcpu, unsigned long pcid) int i; /* + * MOV CR3 and INVPCID are usually not intercepted when using TDP, but + * this is reachable when running EPT=1 and unrestricted_guest=0, and + * also via the emulator. KVM's TDP page tables are not in the scope of + * the invalidation, but the guest's TLB entries need to be flushed as + * the CPU may have cached entries in its TLB for the target PCID. + */ + if (unlikely(tdp_enabled)) { + kvm_make_request(KVM_REQ_TLB_FLUSH_GUEST, vcpu); + return; + } + + /* * If neither the current CR3 nor any of the prev_roots use the given * PCID, then nothing needs to be done here because a resync will * happen anyway before switching to any other CR3. |