forked from Minki/linux
KVM: MMU: fix mmu notifier invalidate handler for huge spte
The index wasn't calculated correctly (off by one) for huge spte so KVM guest was unstable with transparent hugepages. Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> Reviewed-by: Reviewed-by: Rik van Riel <riel@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
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@ -850,8 +850,12 @@ static int kvm_handle_hva(struct kvm *kvm, unsigned long hva,
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ret = handler(kvm, &memslot->rmap[gfn_offset], data);
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for (j = 0; j < KVM_NR_PAGE_SIZES - 1; ++j) {
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int idx = gfn_offset;
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idx /= KVM_PAGES_PER_HPAGE(PT_DIRECTORY_LEVEL + j);
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unsigned long idx;
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int sh;
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sh = KVM_HPAGE_GFN_SHIFT(PT_DIRECTORY_LEVEL+j);
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idx = ((memslot->base_gfn+gfn_offset) >> sh) -
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(memslot->base_gfn >> sh);
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ret |= handler(kvm,
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&memslot->lpage_info[j][idx].rmap_pde,
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data);
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