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

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Message-ID: <545A42C4.6070908@intel.com>
Date:	Wed, 05 Nov 2014 07:31:16 -0800
From:	Dave Hansen <dave.hansen@...el.com>
To:	Masanari Iida <standby24x7@...il.com>
CC:	Jonathan Corbet <corbet@....net>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linux-mm@...ck.org, lcapitulino@...hat.com
Subject: Re: [PATCH] Documentation: vm: Add 1GB large page support information

On 11/05/2014 07:21 AM, Masanari Iida wrote:
> Luiz, Dave,
> Thanks for comments.
> 
> I understand that there are some exception cases which doesn't support 1G
> large pages on newer CPUs.
> I like Dave's example, at the same time I would like to add "pdpe1gb flag" in
> the document.
> 
> For example, x86 CPUs normally support 4K and 2M (1G if pdpe1gb flag exist).

Is 1G supported on CPUs that have pdpe1gb and are running a 32-bit kernel?

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