X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=virt%2Fkvm%2Fkvm_main.c;h=4856a7dcbd7fb8742a11c15e4e4d59deb0808f1e;hb=3cba41307a2b1344ab8c1b9f55202d1e9d7bf81b;hp=f29abeb6a9121782874aa9968dbfcdadf16afe42;hpb=fd96d0d8d8079b1ea7a7e8943a4da9dfc9621124;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index f29abeb..4856a7d 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -165,13 +165,16 @@ static bool make_all_cpus_request(struct kvm *kvm, unsigned int req)
 
 	zalloc_cpumask_var(&cpus, GFP_ATOMIC);
 
-	raw_spin_lock(&kvm->requests_lock);
-	me = smp_processor_id();
+	me = get_cpu();
 	kvm_for_each_vcpu(i, vcpu, kvm) {
-		if (kvm_make_check_request(req, vcpu))
-			continue;
+		kvm_make_request(req, vcpu);
 		cpu = vcpu->cpu;
-		if (cpus != NULL && cpu != -1 && cpu != me)
+
+		/* Set ->requests bit before we read ->mode */
+		smp_mb();
+
+		if (cpus != NULL && cpu != -1 && cpu != me &&
+		      kvm_vcpu_exiting_guest_mode(vcpu) != OUTSIDE_GUEST_MODE)
 			cpumask_set_cpu(cpu, cpus);
 	}
 	if (unlikely(cpus == NULL))
@@ -180,7 +183,7 @@ static bool make_all_cpus_request(struct kvm *kvm, unsigned int req)
 		smp_call_function_many(cpus, ack_flush, NULL, 1);
 	else
 		called = false;
-	raw_spin_unlock(&kvm->requests_lock);
+	put_cpu();
 	free_cpumask_var(cpus);
 	return called;
 }
@@ -463,7 +466,6 @@ static struct kvm *kvm_create_vm(void)
 	kvm->mm = current->mm;
 	atomic_inc(&kvm->mm->mm_count);
 	spin_lock_init(&kvm->mmu_lock);
-	raw_spin_lock_init(&kvm->requests_lock);
 	kvm_eventfd_init(kvm);
 	mutex_init(&kvm->lock);
 	mutex_init(&kvm->irq_lock);
@@ -588,6 +590,7 @@ static int kvm_vm_release(struct inode *inode, struct file *filp)
 	return 0;
 }
 
+#ifndef CONFIG_S390
 /*
  * Allocation size is twice as large as the actual dirty bitmap size.
  * This makes it possible to do double buffering: see x86's
@@ -608,6 +611,7 @@ static int kvm_create_dirty_bitmap(struct kvm_memory_slot *memslot)
 	memslot->dirty_bitmap_head = memslot->dirty_bitmap;
 	return 0;
 }
+#endif /* !CONFIG_S390 */
 
 /*
  * Allocate some memory and give it an address in the guest physical address
@@ -621,7 +625,7 @@ int __kvm_set_memory_region(struct kvm *kvm,
 			    struct kvm_userspace_memory_region *mem,
 			    int user_alloc)
 {
-	int r, flush_shadow = 0;
+	int r;
 	gfn_t base_gfn;
 	unsigned long npages;
 	unsigned long i;
@@ -741,8 +745,6 @@ skip_lpage:
 		if (kvm_create_dirty_bitmap(&new) < 0)
 			goto out_free;
 		/* destroy any largepage mappings for dirty tracking */
-		if (old.npages)
-			flush_shadow = 1;
 	}
 #else  /* not defined CONFIG_S390 */
 	new.user_alloc = user_alloc;
@@ -813,9 +815,6 @@ skip_lpage:
 	kvm_free_physmem_slot(&old, &new);
 	kfree(old_memslots);
 
-	if (flush_shadow)
-		kvm_arch_flush_shadow(kvm);
-
 	return 0;
 
 out_free: