diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-06-14 09:18:07 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-06-14 09:18:07 +0200 |
| commit | 37fdb7c90f8cc2f41bdf2190ccc44a37bbf1a295 (patch) | |
| tree | 2f0c6fdba85b29cf3981053f87e504163aabb270 /arch/x86/kvm/x86.c | |
| parent | 12f739798470288c8c1053484fe0281fe4cc5ea4 (diff) | |
| parent | 009c9aa5be652675a06d5211e1640e02bbb1c33d (diff) | |
| download | linux-37fdb7c90f8cc2f41bdf2190ccc44a37bbf1a295.tar.bz2 | |
Merge tag 'v5.13-rc6' into usb-next
We want the usb fixes in here as well, and this resolves some merge
issues with:
drivers/usb/dwc3/debugfs.c
drivers/usb/dwc3/gadget.c
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/x86/kvm/x86.c')
| -rw-r--r-- | arch/x86/kvm/x86.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index b594275d49b5..6d3955a6a763 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -3072,6 +3072,19 @@ static void kvm_vcpu_flush_tlb_all(struct kvm_vcpu *vcpu) static void kvm_vcpu_flush_tlb_guest(struct kvm_vcpu *vcpu) { ++vcpu->stat.tlb_flush; + + if (!tdp_enabled) { + /* + * A TLB flush on behalf of the guest is equivalent to + * INVPCID(all), toggling CR4.PGE, etc., which requires + * a forced sync of the shadow page tables. Unload the + * entire MMU here and the subsequent load will sync the + * shadow page tables, and also flush the TLB. + */ + kvm_mmu_unload(vcpu); + return; + } + static_call(kvm_x86_tlb_flush_guest)(vcpu); } @@ -3101,9 +3114,11 @@ static void record_steal_time(struct kvm_vcpu *vcpu) * expensive IPIs. */ if (guest_pv_has(vcpu, KVM_FEATURE_PV_TLB_FLUSH)) { + u8 st_preempted = xchg(&st->preempted, 0); + trace_kvm_pv_tlb_flush(vcpu->vcpu_id, - st->preempted & KVM_VCPU_FLUSH_TLB); - if (xchg(&st->preempted, 0) & KVM_VCPU_FLUSH_TLB) + st_preempted & KVM_VCPU_FLUSH_TLB); + if (st_preempted & KVM_VCPU_FLUSH_TLB) kvm_vcpu_flush_tlb_guest(vcpu); } else { st->preempted = 0; |