Commit 7e9d619d authored by Rusty Russell's avatar Rusty Russell Committed by Avi Kivity

KVM: Cleanup mark_page_dirty

For some reason, mark_page_dirty open-codes __gfn_to_memslot().
Signed-off-by: default avatarRusty Russell <rusty@rustcorp.com.au>
Signed-off-by: default avatarAvi Kivity <avi@qumranet.com>
parent fb764416
......@@ -916,28 +916,18 @@ struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn)
}
EXPORT_SYMBOL_GPL(gfn_to_page);
/* WARNING: Does not work on aliased pages. */
void mark_page_dirty(struct kvm *kvm, gfn_t gfn)
{
int i;
struct kvm_memory_slot *memslot;
unsigned long rel_gfn;
for (i = 0; i < kvm->nmemslots; ++i) {
memslot = &kvm->memslots[i];
if (gfn >= memslot->base_gfn
&& gfn < memslot->base_gfn + memslot->npages) {
if (!memslot->dirty_bitmap)
return;
rel_gfn = gfn - memslot->base_gfn;
memslot = __gfn_to_memslot(kvm, gfn);
if (memslot && memslot->dirty_bitmap) {
unsigned long rel_gfn = gfn - memslot->base_gfn;
/* avoid RMW */
if (!test_bit(rel_gfn, memslot->dirty_bitmap))
set_bit(rel_gfn, memslot->dirty_bitmap);
return;
}
}
}
......
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