diff options
Diffstat (limited to 'virt/kvm/pfncache.c')
| -rw-r--r-- | virt/kvm/pfncache.c | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/virt/kvm/pfncache.c b/virt/kvm/pfncache.c index 1621f8efd961..81b2758d0ded 100644 --- a/virt/kvm/pfncache.c +++ b/virt/kvm/pfncache.c @@ -27,7 +27,7 @@ void gfn_to_pfn_cache_invalidate_start(struct kvm *kvm, unsigned long start, { DECLARE_BITMAP(vcpu_bitmap, KVM_MAX_VCPUS); struct gfn_to_pfn_cache *gpc; - bool wake_vcpus = false; + bool evict_vcpus = false; spin_lock(&kvm->gpc_lock); list_for_each_entry(gpc, &kvm->gpc_list, list) { @@ -40,11 +40,11 @@ void gfn_to_pfn_cache_invalidate_start(struct kvm *kvm, unsigned long start, /* * If a guest vCPU could be using the physical address, - * it needs to be woken. + * it needs to be forced out of guest mode. */ if (gpc->guest_uses_pa) { - if (!wake_vcpus) { - wake_vcpus = true; + if (!evict_vcpus) { + evict_vcpus = true; bitmap_zero(vcpu_bitmap, KVM_MAX_VCPUS); } __set_bit(gpc->vcpu->vcpu_idx, vcpu_bitmap); @@ -67,14 +67,18 @@ void gfn_to_pfn_cache_invalidate_start(struct kvm *kvm, unsigned long start, } spin_unlock(&kvm->gpc_lock); - if (wake_vcpus) { - unsigned int req = KVM_REQ_GPC_INVALIDATE; + if (evict_vcpus) { + /* + * KVM needs to ensure the vCPU is fully out of guest context + * before allowing the invalidation to continue. + */ + unsigned int req = KVM_REQ_OUTSIDE_GUEST_MODE; bool called; /* * If the OOM reaper is active, then all vCPUs should have * been stopped already, so perform the request without - * KVM_REQUEST_WAIT and be sad if any needed to be woken. + * KVM_REQUEST_WAIT and be sad if any needed to be IPI'd. */ if (!may_block) req &= ~KVM_REQUEST_WAIT; |