linux-kernel - Re: [PATCH/v2] Documentation: vm: Add 1GB large page support information

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Message-ID: <20141106114005.34dcbf6c@redhat.com>
Date:	Thu, 6 Nov 2014 11:40:05 -0500
From:	Luiz Capitulino <lcapitulino@...hat.com>
To:	Masanari Iida <standby24x7@...il.com>
Cc:	linux-kernel@...r.kernel.org, corbet@....net, linux-mm@...ck.org,
	dave.hansen@...el.com, andi@...stfloor.org
Subject: Re: [PATCH/v2] Documentation: vm: Add 1GB large page support
 information

On Fri,  7 Nov 2014 00:31:15 +0900
Masanari Iida <standby24x7@...il.com> wrote:

> This patch adds 1GB large page support information in
> Documentation/vm/hugetlbpage.txt
> 
> Reference:
> https://lkml.org/lkml/2014/10/31/366
> 
> Signed-off-by: Masanari Iida <standby24x7@...il.com>
> ---
>  Documentation/vm/hugetlbpage.txt | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/vm/hugetlbpage.txt b/Documentation/vm/hugetlbpage.txt
> index b64e0af..f2d3a10 100644
> --- a/Documentation/vm/hugetlbpage.txt
> +++ b/Documentation/vm/hugetlbpage.txt
> @@ -1,8 +1,8 @@
>  
>  The intent of this file is to give a brief summary of hugetlbpage support in
>  the Linux kernel.  This support is built on top of multiple page size support
> -that is provided by most modern architectures.  For example, i386
> -architecture supports 4K and 4M (2M in PAE mode) page sizes, ia64
> +that is provided by most modern architectures.  For example, x86 CPUs normally
> +support 4K and 2M (1G if architecturally supported) page sizes, ia64
>  architecture supports multiple page sizes 4K, 8K, 64K, 256K, 1M, 4M, 16M,
>  256M and ppc64 supports 4K and 16M.  A TLB is a cache of virtual-to-physical
>  translations.  Typically this is a very scarce resource on processor.

Looks good to me:

Reviewed-by: Luiz Capitulino <lcapitulino@...hat.com>
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