linux-kernel - Re: [PATCH v2 2/3] x86: query dynamic DEBUG

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Date:	Wed, 27 Jan 2016 10:16:01 +0100 (CET)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Christian Borntraeger <borntraeger@...ibm.com>
cc:	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
	linux-mm@...ck.org, linux-arch@...r.kernel.org,
	linux-s390@...r.kernel.org, x86@...nel.org,
	linuxppc-dev@...ts.ozlabs.org, davem@...emloft.net,
	Joonsoo Kim <iamjoonsoo.kim@....com>, davej@...emonkey.org.uk
Subject: Re: [PATCH v2 2/3] x86: query dynamic DEBUG_PAGEALLOC setting

On Wed, 27 Jan 2016, Christian Borntraeger wrote:

> We can use debug_pagealloc_enabled() to check if we can map
> the identity mapping with 2MB pages. We can also add the state
> into the dump_stack output.
> 
> The patch does not touch the code for the 1GB pages, which ignored
> CONFIG_DEBUG_PAGEALLOC. Do we need to fence this as well?
> 
> Signed-off-by: Christian Borntraeger <borntraeger@...ibm.com>

Reviewed-by: Thomas Gleixner <tglx@...utronix.de>