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SubjectRe: [PATCH v1 06/16] kvm: arm/arm64: Fix stage2_flush_memslot for 4 level page table
On Tue, Jan 09, 2018 at 07:04:01PM +0000, Suzuki K Poulose wrote:
> So far we have only supported 3 level page table with fixed IPA of 40bits.
> Fix stage2_flush_memslot() to accommodate for 4 level tables.
>

Acked-by: Christoffer Dall <christoffer.dall@linaro.org>

> Cc: Marc Zyngier <marc.zyngier@arm.com>
> Cc: Christoffer Dall <cdall@linaro.org>
> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
> ---
> virt/kvm/arm/mmu.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/virt/kvm/arm/mmu.c b/virt/kvm/arm/mmu.c
> index 761787befd3b..e6548c85c495 100644
> --- a/virt/kvm/arm/mmu.c
> +++ b/virt/kvm/arm/mmu.c
> @@ -375,7 +375,8 @@ static void stage2_flush_memslot(struct kvm *kvm,
> pgd = kvm->arch.pgd + stage2_pgd_index(addr);
> do {
> next = stage2_pgd_addr_end(addr, end);
> - stage2_flush_puds(kvm, pgd, addr, next);
> + if (!stage2_pgd_none(*pgd))
> + stage2_flush_puds(kvm, pgd, addr, next);
> } while (pgd++, addr = next, addr != end);
> }
>
> --
> 2.13.6
>

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