diff options
Diffstat (limited to 'drivers/kvm/kvm_main.c')
| -rw-r--r-- | drivers/kvm/kvm_main.c | 19 |
1 files changed, 4 insertions, 15 deletions
diff --git a/drivers/kvm/kvm_main.c b/drivers/kvm/kvm_main.c index b0b6ff2a8cb..5f11e6b0945 100644 --- a/drivers/kvm/kvm_main.c +++ b/drivers/kvm/kvm_main.c @@ -389,19 +389,14 @@ int kvm_vm_ioctl_set_memory_region(struct kvm *kvm, return kvm_set_memory_region(kvm, mem, user_alloc); } -/* - * Get (and clear) the dirty memory log for a memory slot. - */ -static int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, - struct kvm_dirty_log *log) +int kvm_get_dirty_log(struct kvm *kvm, + struct kvm_dirty_log *log, int *is_dirty) { struct kvm_memory_slot *memslot; int r, i; int n; unsigned long any = 0; - mutex_lock(&kvm->lock); - r = -EINVAL; if (log->slot >= KVM_MEMORY_SLOTS) goto out; @@ -420,17 +415,11 @@ static int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, if (copy_to_user(log->dirty_bitmap, memslot->dirty_bitmap, n)) goto out; - /* If nothing is dirty, don't bother messing with page tables. */ - if (any) { - kvm_mmu_slot_remove_write_access(kvm, log->slot); - kvm_flush_remote_tlbs(kvm); - memset(memslot->dirty_bitmap, 0, n); - } + if (any) + *is_dirty = 1; r = 0; - out: - mutex_unlock(&kvm->lock); return r; } |