linux-kernel - Re: [PATCH 6/7] x86, mm: setup page table from top-down

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Date:	Tue, 9 Oct 2012 18:53:31 -0700
From:	Yinghai Lu <yinghai@...nel.org>
To:	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>
Cc:	Stefano Stabellini <stefano.stabellini@...citrix.com>,
	linux-kernel@...r.kernel.org, Yinghai Lu <yinghai@...nel.org>
Subject: Re: [PATCH 6/7] x86, mm: setup page table from top-down

On Tue, Oct 9, 2012 at 4:58 PM, Yinghai Lu <yinghai@...nel.org> wrote:
> Get pgt_buf early from BRK, and use it to map PMD_SIZE to top at first.
> then use page from PMD_SIZE to map next blow range.
>
> alloc_low_page will use page from BRK at first, then will switch to use
> to memblock to find and reserve page for page table usage.
>
> At last we could get rid of calculation and find early pgt related code.
>
> Suggested-by: "H. Peter Anvin" <hpa@...or.com>
> Signed-off-by: Yinghai Lu <yinghai@...nel.org>

sorry , there one typo in this patch, please use attached one instead.

Download attachment "fix_max_pfn_xx_13.patch" of type "application/octet-stream" (11878 bytes)