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Re: [Qemu-devel] [PATCH v3 05/20] kvm: arm/arm64: Fix stage2_flush_memsl
From: |
Marc Zyngier |
Subject: |
Re: [Qemu-devel] [PATCH v3 05/20] kvm: arm/arm64: Fix stage2_flush_memslot for 4 level page table |
Date: |
Mon, 2 Jul 2018 10:59:38 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.8.0 |
On 29/06/18 12:15, 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.
>
> Cc: Marc Zyngier <address@hidden>
> Acked-by: Christoffer Dall <address@hidden>
> Signed-off-by: Suzuki K Poulose <address@hidden>
> ---
> 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 1d90d79..061e6b3 100644
> --- a/virt/kvm/arm/mmu.c
> +++ b/virt/kvm/arm/mmu.c
> @@ -379,7 +379,8 @@ 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);
> }
>
>
Reviewed-by: Marc Zyngier <address@hidden>
M.
--
Jazz is not dead. It just smells funny...
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