Merge branch 'fix/asoc' into topic/asoc

[pandora-kernel.git] / virt / kvm / kvm_main.c

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 605697e..1ecbe23 100644 (file)
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -920,6 +920,7 @@ int __kvm_set_memory_region(struct kvm *kvm,
        int r;
        gfn_t base_gfn;
        unsigned long npages;
+       int largepages;
        unsigned long i;
        struct kvm_memory_slot *memslot;
        struct kvm_memory_slot old, new;
@@ -960,7 +961,7 @@ int __kvm_set_memory_region(struct kvm *kvm,
        for (i = 0; i < KVM_MEMORY_SLOTS; ++i) {
                struct kvm_memory_slot *s = &kvm->memslots[i];
 
-               if (s == memslot)
+               if (s == memslot || !s->npages)
                        continue;
                if (!((base_gfn + npages <= s->base_gfn) ||
                      (base_gfn >= s->base_gfn + s->npages)))
@@ -995,11 +996,8 @@ int __kvm_set_memory_region(struct kvm *kvm,
                        new.userspace_addr = 0;
        }
        if (npages && !new.lpage_info) {
-               int largepages = npages / KVM_PAGES_PER_HPAGE;
-               if (npages % KVM_PAGES_PER_HPAGE)
-                       largepages++;
-               if (base_gfn % KVM_PAGES_PER_HPAGE)
-                       largepages++;
+               largepages = 1 + (base_gfn + npages - 1) / KVM_PAGES_PER_HPAGE;
+               largepages -= base_gfn / KVM_PAGES_PER_HPAGE;
 
                new.lpage_info = vmalloc(largepages * sizeof(*new.lpage_info));
 
@@ -1985,6 +1983,7 @@ static long kvm_dev_ioctl_check_extension_generic(long arg)
        switch (arg) {
        case KVM_CAP_USER_MEMORY:
        case KVM_CAP_DESTROY_MEMORY_REGION_WORKS:
+       case KVM_CAP_JOIN_MEMORY_REGIONS_WORKS:
                return 1;
 #ifdef CONFIG_HAVE_KVM_IRQCHIP
        case KVM_CAP_IRQ_ROUTING: