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KVM: introduce id_to_memslot function

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Introduce id_to_memslot to get memslot by slot id

Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Xiao Guangrong 2011-11-24 19:04:35 +08:00 • committed by Avi Kivity
parent be6ba0f096
commit 28a37544fb
6 changed files with 30 additions and 17 deletions
Download patch file Download diff file Expand all files Collapse all files

13
virt/kvm/kvm_main.c
View file

@ -634,8 +634,9 @@ void update_memslots(struct kvm_memslots *slots, struct kvm_memory_slot *new)
{
if (new) {
int id = new->id;
struct kvm_memory_slot *old = id_to_memslot(slots, id);
slots->memslots[id] = *new;
*old = *new;
if (id >= slots->nmemslots)
slots->nmemslots = id + 1;
}
@ -681,7 +682,7 @@ int __kvm_set_memory_region(struct kvm *kvm,
if (mem->guest_phys_addr + mem->memory_size < mem->guest_phys_addr)
goto out;
memslot = &kvm->memslots->memslots[mem->slot];
memslot = id_to_memslot(kvm->memslots, mem->slot);
base_gfn = mem->guest_phys_addr >> PAGE_SHIFT;
npages = mem->memory_size >> PAGE_SHIFT;
@ -788,12 +789,16 @@ skip_lpage:
#endif /* not defined CONFIG_S390 */
if (!npages) {
struct kvm_memory_slot *slot;
r = -ENOMEM;
slots = kmemdup(kvm->memslots, sizeof(struct kvm_memslots),
GFP_KERNEL);
if (!slots)
goto out_free;
slots->memslots[mem->slot].flags |= KVM_MEMSLOT_INVALID;
slot = id_to_memslot(slots, mem->slot);
slot->flags |= KVM_MEMSLOT_INVALID;
update_memslots(slots, NULL);
old_memslots = kvm->memslots;
@ -897,7 +902,7 @@ int kvm_get_dirty_log(struct kvm *kvm,
if (log->slot >= KVM_MEMORY_SLOTS)
goto out;
memslot = &kvm->memslots->memslots[log->slot];
memslot = id_to_memslot(kvm->memslots, log->slot);
r = -ENOENT;
if (!memslot->dirty_bitmap)
goto out;