Commit c4fcc272 authored by Avi Kivity's avatar Avi Kivity

KVM: MMU: When updating the dirty bit, inform the mmu about it

Since the mmu uses different shadow pages for dirty large pages and clean
large pages, this allows the mmu to drop ptes that are now invalid.
Signed-off-by: default avatarAvi Kivity <avi@qumranet.com>
parent 5df34a86
......@@ -74,9 +74,14 @@ static void FNAME(update_dirty_bit)(struct kvm_vcpu *vcpu,
pt_element_t *ptep,
gfn_t table_gfn)
{
gpa_t pte_gpa;
if (write_fault && !is_dirty_pte(*ptep)) {
mark_page_dirty(vcpu->kvm, table_gfn);
*ptep |= PT_DIRTY_MASK;
pte_gpa = ((gpa_t)table_gfn << PAGE_SHIFT);
pte_gpa += offset_in_page(ptep);
kvm_mmu_pte_write(vcpu, pte_gpa, (u8 *)ptep, sizeof(*ptep));
}
}
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment