r = 0;
@@ -1195,11 +1232,16 @@ void mark_page_dirty(struct kvm *kvm, gfn_t gfn)
gfn = unalias_gfn(kvm, gfn);
memslot = gfn_to_memslot_unaliased(kvm, gfn);
if (memslot&& memslot->dirty_bitmap) {
- unsigned long rel_gfn = gfn - memslot->base_gfn;
+ int nr = generic_le_bit_offset(gfn - memslot->base_gfn);
- generic___set_le_bit(rel_gfn, memslot->dirty_bitmap);
+ if (kvm_set_bit_user(nr, memslot->dirty_bitmap))
+ goto out_fault;
mark_page_dirty is called with the mmu_lock spinlock held in set_spte.
Must find a way to move it outside of the spinlock section.
Oh, it's a serious problem. I have to consider it.
Thanks,
Takuya
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