1 files changed, 11 insertions, 6 deletions

diff --git a/arch/ia64/kvm/kvm-ia64.c b/arch/ia64/kvm/kvm-ia64.c
index 73c5c2b05f6..d5f4e916120 100644
--- a/arch/ia64/kvm/kvm-ia64.c
+++ b/arch/ia64/kvm/kvm-ia64.c
@@ -979,11 +979,13 @@ long kvm_arch_vm_ioctl(struct file *filp,
 		r = -EFAULT;
 		if (copy_from_user(&irq_event, argp, sizeof irq_event))
 			goto out;
+		r = -ENXIO;
 		if (irqchip_in_kernel(kvm)) {
 			__s32 status;
 			status = kvm_set_irq(kvm, KVM_USERSPACE_IRQ_SOURCE_ID,
 				    irq_event.irq, irq_event.level);
 			if (ioctl == KVM_IRQ_LINE_STATUS) {
+				r = -EFAULT;
 				irq_event.status = status;
 				if (copy_to_user(argp, &irq_event,
 							sizeof irq_event))
@@ -1379,7 +1381,7 @@ static void kvm_release_vm_pages(struct kvm *kvm)
 	int i, j;
 	unsigned long base_gfn;
 
-	slots = rcu_dereference(kvm->memslots);
+	slots = kvm_memslots(kvm);
 	for (i = 0; i < slots->nmemslots; i++) {
 		memslot = &slots->memslots[i];
 		base_gfn = memslot->base_gfn;
@@ -1535,8 +1537,10 @@ long kvm_arch_vcpu_ioctl(struct file *filp,
 			goto out;
 
 		if (copy_to_user(user_stack, stack,
-				 sizeof(struct kvm_ia64_vcpu_stack)))
+				 sizeof(struct kvm_ia64_vcpu_stack))) {
+			r = -EFAULT;
 			goto out;
+		}
 
 		break;
 	}
@@ -1802,7 +1806,8 @@ static int kvm_ia64_sync_dirty_log(struct kvm *kvm,
 {
 	struct kvm_memory_slot *memslot;
 	int r, i;
-	long n, base;
+	long base;
+	unsigned long n;
 	unsigned long *dirty_bitmap = (unsigned long *)(kvm->arch.vm_base +
 			offsetof(struct kvm_vm_data, kvm_mem_dirty_log));
 
@@ -1815,7 +1820,7 @@ static int kvm_ia64_sync_dirty_log(struct kvm *kvm,
 	if (!memslot->dirty_bitmap)
 		goto out;
 
-	n = ALIGN(memslot->npages, BITS_PER_LONG) / 8;
+	n = kvm_dirty_bitmap_bytes(memslot);
 	base = memslot->base_gfn / BITS_PER_LONG;
 
 	for (i = 0; i < n/sizeof(long); ++i) {
@@ -1831,7 +1836,7 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
 		struct kvm_dirty_log *log)
 {
 	int r;
-	int n;
+	unsigned long n;
 	struct kvm_memory_slot *memslot;
 	int is_dirty = 0;
 
@@ -1850,7 +1855,7 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
 	if (is_dirty) {
 		kvm_flush_remote_tlbs(kvm);
 		memslot = &kvm->memslots->memslots[log->slot];
-		n = ALIGN(memslot->npages, BITS_PER_LONG) / 8;
+		n = kvm_dirty_bitmap_bytes(memslot);
 		memset(memslot->dirty_bitmap, 0, n);
 	}
 	r = 0;