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Re: [PATCHv3 3/3] arm64: ptdump: Indicate whether memory should be faulting

From Ard Biesheuvel <ard.biesheuvel@linaro.org>
Newsgroups linux.kernel
Subject Re: [PATCHv3 3/3] arm64: ptdump: Indicate whether memory should be faulting
Date 2016-02-05 13:10 +0100
Message-ID <qYNn4-8os-13@gated-at.bofh.it> (permalink)
References <qYy4G-6oS-23@gated-at.bofh.it> <qYy4G-6oS-21@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On 4 February 2016 at 20:43, Laura Abbott <labbott@fedoraproject.org> wrote:
>
> With CONFIG_DEBUG_PAGEALLOC, pages do not have the valid bit
> set when free in the buddy allocator. Add an indiciation to
> the page table dumping code that the valid bit is not set,
> 'F' for fault, to make this easier to understand.
>
> Signed-off-by: Laura Abbott <labbott@fedoraproject.org>

Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>

> ---
>  arch/arm64/mm/dump.c | 5 +++++
>  1 file changed, 5 insertions(+)
>
> diff --git a/arch/arm64/mm/dump.c b/arch/arm64/mm/dump.c
> index 5a22a11..f381ac9 100644
> --- a/arch/arm64/mm/dump.c
> +++ b/arch/arm64/mm/dump.c
> @@ -90,6 +90,11 @@ struct prot_bits {
>
>  static const struct prot_bits pte_bits[] = {
>         {
> +               .mask   = PTE_VALID,
> +               .val    = PTE_VALID,
> +               .set    = " ",
> +               .clear  = "F",
> +       }, {
>                 .mask   = PTE_USER,
>                 .val    = PTE_USER,
>                 .set    = "USR",
> --
> 2.5.0
>

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[PATCHv3 3/3] arm64: ptdump: Indicate whether memory should be faulting Laura Abbott <labbott@fedoraproject.org> - 2016-02-04 20:50 +0100
  Re: [PATCHv3 3/3] arm64: ptdump: Indicate whether memory should be faulting Ard Biesheuvel <ard.biesheuvel@linaro.org> - 2016-02-05 13:10 +0100
  Re: [PATCHv3 3/3] arm64: ptdump: Indicate whether memory should be  faulting Mark Rutland <mark.rutland@arm.com> - 2016-02-05 15:40 +0100

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