linux-kernel - Re: [PATCH -v2 04/13] x86, mm: Revert back good

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Message-ID: <CAOJsxLEnOrODp9DA0tZpbHrnO7wCmVa_xuzkobDGN-i=U1NVFA@mail.gmail.com>
Date:	Mon, 3 Sep 2012 08:25:30 +0300
From:	Pekka Enberg <penberg@...nel.org>
To:	Yinghai Lu <yinghai@...nel.org>
Cc:	Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...e.hu>,
	"H. Peter Anvin" <hpa@...or.com>, Jacob Shin <jacob.shin@....com>,
	Tejun Heo <tj@...nel.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH -v2 04/13] x86, mm: Revert back good_end setting for 64bit

On Sun, Sep 2, 2012 at 10:46 AM, Yinghai Lu <yinghai@...nel.org> wrote:
> So we could put page table high again for 64bit.
>
> Signed-off-by: Yinghai Lu <yinghai@...nel.org>

The changelog for this is too terse for me to actually understand why
this is needed.

> ---
>  arch/x86/mm/init.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c
> index 15a6a38..cca9b7d 100644
> --- a/arch/x86/mm/init.c
> +++ b/arch/x86/mm/init.c
> @@ -76,8 +76,8 @@ static void __init find_early_table_space(struct map_range *mr,
>  #ifdef CONFIG_X86_32
>         /* for fixmap */
>         tables += roundup(__end_of_fixed_addresses * sizeof(pte_t), PAGE_SIZE);
> -#endif
>         good_end = max_pfn_mapped << PAGE_SHIFT;
> +#endif
>
>         base = memblock_find_in_range(start, good_end, tables, PAGE_SIZE);
>         if (!base)
> --
> 1.7.7
>
> --
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