From b7a8f03b53f4f37438fbf31a1a429036760ef55d Mon Sep 17 00:00:00 2001 From: Takuya Yoshikawa Date: Wed, 23 Jun 2010 15:00:29 +0900 Subject: [PATCH] KVM: ia64: cleanup kvm_ia64_sync_dirty_log() kvm_ia64_sync_dirty_log() is a helper function for kvm_vm_ioctl_get_dirty_log() which copies ia64's arch specific dirty bitmap to general one in memslot. So doing sanity checks in this function is unnatural. We move these checks outside of this and change the prototype appropriately. Signed-off-by: Takuya Yoshikawa Signed-off-by: Avi Kivity --- arch/ia64/kvm/kvm-ia64.c | 30 +++++++++++------------------- 1 file changed, 11 insertions(+), 19 deletions(-) diff --git a/arch/ia64/kvm/kvm-ia64.c b/arch/ia64/kvm/kvm-ia64.c index d85b5d2d52d15..5cb58655cd5f9 100644 --- a/arch/ia64/kvm/kvm-ia64.c +++ b/arch/ia64/kvm/kvm-ia64.c @@ -1795,25 +1795,15 @@ void kvm_arch_exit(void) kvm_vmm_info = NULL; } -static int kvm_ia64_sync_dirty_log(struct kvm *kvm, - struct kvm_dirty_log *log) +static void kvm_ia64_sync_dirty_log(struct kvm *kvm, + struct kvm_memory_slot *memslot) { - struct kvm_memory_slot *memslot; - int r, i; + int i; long base; unsigned long n; unsigned long *dirty_bitmap = (unsigned long *)(kvm->arch.vm_base + offsetof(struct kvm_vm_data, kvm_mem_dirty_log)); - r = -EINVAL; - if (log->slot >= KVM_MEMORY_SLOTS) - goto out; - - memslot = &kvm->memslots->memslots[log->slot]; - r = -ENOENT; - if (!memslot->dirty_bitmap) - goto out; - n = kvm_dirty_bitmap_bytes(memslot); base = memslot->base_gfn / BITS_PER_LONG; @@ -1823,9 +1813,6 @@ static int kvm_ia64_sync_dirty_log(struct kvm *kvm, dirty_bitmap[base + i] = 0; } spin_unlock(&kvm->arch.dirty_log_lock); - r = 0; -out: - return r; } int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, @@ -1838,10 +1825,16 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, mutex_lock(&kvm->slots_lock); - r = kvm_ia64_sync_dirty_log(kvm, log); - if (r) + r = -EINVAL; + if (log->slot >= KVM_MEMORY_SLOTS) + goto out; + + memslot = &kvm->memslots->memslots[log->slot]; + r = -ENOENT; + if (!memslot->dirty_bitmap) goto out; + kvm_ia64_sync_dirty_log(kvm, memslot); r = kvm_get_dirty_log(kvm, log, &is_dirty); if (r) goto out; @@ -1849,7 +1842,6 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, /* If nothing is dirty, don't bother messing with page tables. */ if (is_dirty) { kvm_flush_remote_tlbs(kvm); - memslot = &kvm->memslots->memslots[log->slot]; n = kvm_dirty_bitmap_bytes(memslot); memset(memslot->dirty_bitmap, 0, n); } -- 2.39.5