Merge branch 'x86/entry' into ras/core

to fixup conflicts in arch/x86/kernel/cpu/mce/core.c so MCE specific follow
up patches can be applied without creating a horrible merge conflict
afterwards.

1 files changed, 14 insertions, 5 deletions

diff --git a/virt/kvm/async_pf.c b/virt/kvm/async_pf.c
index 15e5b037f92d..5f8f3e8b5add 100644
--- a/virt/kvm/async_pf.c
+++ b/virt/kvm/async_pf.c
@@ -51,6 +51,7 @@ static void async_pf_execute(struct work_struct *work)
 	unsigned long addr = apf->addr;
 	gpa_t cr2_or_gpa = apf->cr2_or_gpa;
 	int locked = 1;
+	bool first;
 
 	might_sleep();
 
@@ -59,20 +60,24 @@ static void async_pf_execute(struct work_struct *work)
 	 * mm and might be done in another context, so we must
 	 * access remotely.
 	 */
-	down_read(&mm->mmap_sem);
+	mmap_read_lock(mm);
 	get_user_pages_remote(NULL, mm, addr, 1, FOLL_WRITE, NULL, NULL,
 			&locked);
 	if (locked)
-		up_read(&mm->mmap_sem);
+		mmap_read_unlock(mm);
 
 	if (IS_ENABLED(CONFIG_KVM_ASYNC_PF_SYNC))
 		kvm_arch_async_page_present(vcpu, apf);
 
 	spin_lock(&vcpu->async_pf.lock);
+	first = list_empty(&vcpu->async_pf.done);
 	list_add_tail(&apf->link, &vcpu->async_pf.done);
 	apf->vcpu = NULL;
 	spin_unlock(&vcpu->async_pf.lock);
 
+	if (!IS_ENABLED(CONFIG_KVM_ASYNC_PF_SYNC) && first)
+		kvm_arch_async_page_present_queued(vcpu);
+
 	/*
 	 * apf may be freed by kvm_check_async_pf_completion() after
 	 * this point
@@ -80,8 +85,7 @@ static void async_pf_execute(struct work_struct *work)
 
 	trace_kvm_async_pf_completed(addr, cr2_or_gpa);
 
-	if (swq_has_sleeper(&vcpu->wq))
-		swake_up_one(&vcpu->wq);
+	rcuwait_wake_up(&vcpu->wait);
 
 	mmput(mm);
 	kvm_put_kvm(vcpu->kvm);
@@ -135,7 +139,7 @@ void kvm_check_async_pf_completion(struct kvm_vcpu *vcpu)
 	struct kvm_async_pf *work;
 
 	while (!list_empty_careful(&vcpu->async_pf.done) &&
-	      kvm_arch_can_inject_async_page_present(vcpu)) {
+	      kvm_arch_can_dequeue_async_page_present(vcpu)) {
 		spin_lock(&vcpu->async_pf.lock);
 		work = list_first_entry(&vcpu->async_pf.done, typeof(*work),
 					      link);
@@ -202,6 +206,7 @@ retry_sync:
 int kvm_async_pf_wakeup_all(struct kvm_vcpu *vcpu)
 {
 	struct kvm_async_pf *work;
+	bool first;
 
 	if (!list_empty_careful(&vcpu->async_pf.done))
 		return 0;
@@ -214,9 +219,13 @@ int kvm_async_pf_wakeup_all(struct kvm_vcpu *vcpu)
 	INIT_LIST_HEAD(&work->queue); /* for list_del to work */
 
 	spin_lock(&vcpu->async_pf.lock);
+	first = list_empty(&vcpu->async_pf.done);
 	list_add_tail(&work->link, &vcpu->async_pf.done);
 	spin_unlock(&vcpu->async_pf.lock);
 
+	if (!IS_ENABLED(CONFIG_KVM_ASYNC_PF_SYNC) && first)
+		kvm_arch_async_page_present_queued(vcpu);
+
 	vcpu->async_pf.queued++;
 	return 0;
 }