[PATCH] arm64: pageattr: Correctly adjust unaligned start addresses

[Z Lim]

On Thu, Sep 11, 2014 at 3:10 PM, Laura Abbott <lauraa at codeaurora.org> wrote:
> The start address needs to be actually updated after it
> is detected to be unaligned. Adjust it and the end address
> properly.
>
> Reported-by: Zi Shen Lim <zlim.lnx at gmail.com>
> Signed-off-by: Laura Abbott <lauraa at codeaurora.org>
> ---
>  arch/arm64/mm/pageattr.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm64/mm/pageattr.c b/arch/arm64/mm/pageattr.c
> index 75e744e..bb0ea94 100644
> --- a/arch/arm64/mm/pageattr.c
> +++ b/arch/arm64/mm/pageattr.c
> @@ -46,7 +46,8 @@ static int change_memory_common(unsigned long addr, int numpages,
>         struct page_change_data data;
>
>         if (!IS_ALIGNED(addr, PAGE_SIZE)) {
> -               addr &= PAGE_MASK;
> +               start &= PAGE_MASK;
> +               end = start + size;
>                 WARN_ON_ONCE(1);
>         }
>

Looks good to me.
Reviewed-by: Zi Shen Lim <zlim.lnx at gmail.com>

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