Re: [PATCH v7u1 01/31] x86, mm: Fix page table early allocationoffset checking

From: Borislav Petkov
Date: Fri Jan 04 2013 - 02:17:12 EST

On Thu, Jan 03, 2013 at 04:48:21PM -0800, Yinghai Lu wrote:
> During debugging loading kernel above 4G, found one page if is not used
> in BRK with early page allocation.
> pgt_buf_top is address that can not be used, so should check if that new
> end is above that top, otherwise last page will not be used.
> Fix that checking and also add print out for every allocation from BRK.

This commit message still bothers the hell out of me. Please, fix it up
to something more readable like the below, for example:

"pgt_buf_top is an address which cannot be used so we should check
whether the new 'end' is above it. Otherwise, the last BRK page remains

Fix that check and add a debug printout of every BRK allocation."


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