diff --git a/[refs] b/[refs] index 0d56e04c9d0f..2ec2c4d2e11d 100644 --- a/[refs] +++ b/[refs] @@ -1,2 +1,2 @@ --- -refs/heads/master: f395302e09ef783b8f82d1160510a95aa8c66dbc +refs/heads/master: bcd3ef58283a471d6b65855b83f78bd39eb55391 diff --git a/trunk/arch/x86/kvm/mmu.c b/trunk/arch/x86/kvm/mmu.c index 58adec384489..a5d6ef785b7e 100644 --- a/trunk/arch/x86/kvm/mmu.c +++ b/trunk/arch/x86/kvm/mmu.c @@ -1277,7 +1277,7 @@ static int kvm_handle_hva_range(struct kvm *kvm, kvm_for_each_memslot(memslot, slots) { unsigned long hva_start, hva_end; - gfn_t gfn, gfn_end; + gfn_t gfn_start, gfn_end; hva_start = max(start, memslot->userspace_addr); hva_end = min(end, memslot->userspace_addr + @@ -1286,19 +1286,27 @@ static int kvm_handle_hva_range(struct kvm *kvm, continue; /* * {gfn(page) | page intersects with [hva_start, hva_end)} = - * {gfn, gfn+1, ..., gfn_end-1}. + * {gfn_start, gfn_start+1, ..., gfn_end-1}. */ - gfn = hva_to_gfn_memslot(hva_start, memslot); + gfn_start = hva_to_gfn_memslot(hva_start, memslot); gfn_end = hva_to_gfn_memslot(hva_end + PAGE_SIZE - 1, memslot); - for (; gfn < gfn_end; ++gfn) { - for (j = PT_PAGE_TABLE_LEVEL; - j < PT_PAGE_TABLE_LEVEL + KVM_NR_PAGE_SIZES; ++j) { - unsigned long *rmapp; + for (j = PT_PAGE_TABLE_LEVEL; + j < PT_PAGE_TABLE_LEVEL + KVM_NR_PAGE_SIZES; ++j) { + unsigned long idx, idx_end; + unsigned long *rmapp; - rmapp = __gfn_to_rmap(gfn, j, memslot); - ret |= handler(kvm, rmapp, memslot, data); - } + /* + * {idx(page_j) | page_j intersects with + * [hva_start, hva_end)} = {idx, idx+1, ..., idx_end}. + */ + idx = gfn_to_index(gfn_start, memslot->base_gfn, j); + idx_end = gfn_to_index(gfn_end - 1, memslot->base_gfn, j); + + rmapp = __gfn_to_rmap(gfn_start, j, memslot); + + for (; idx <= idx_end; ++idx) + ret |= handler(kvm, rmapp++, memslot, data); } }