linux-kernel - Re: [PATCH] x86/numa: kernel stack corruption fix

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Date:	Thu, 2 Apr 2015 11:24:05 +0800
From:	Dave Young <dyoung@...hat.com>
To:	Xishi Qiu <qiuxishi@...wei.com>
Cc:	x86@...nel.org, linux-kernel@...r.kernel.org, tglx@...utronix.de,
	bhe@...hat.com, mingo@...hat.com, hpa@...or.com,
	akpm@...ux-foundation.org, Tang Chen <tangchen@...fujitsu.com>
Subject: Re: [PATCH] x86/numa: kernel stack corruption fix

Hi, Xishi

[snip]
> >>  arch/x86/mm/numa.c |    3 ++-
> >>  1 file changed, 2 insertions(+), 1 deletion(-)
> >>
> >> --- linux.orig/arch/x86/mm/numa.c
> >> +++ linux/arch/x86/mm/numa.c
> >> @@ -484,7 +484,8 @@ static void __init numa_clear_kernel_nod
> >>  
> >>  	/* Mark all kernel nodes. */
> >>  	for_each_memblock(reserved, r)
> >> -		node_set(r->nid, numa_kernel_nodes);
> 
> Hi Dave,
> 
> How about add some comment here? if set numa=off, numa_meminfo may not include
> all the memblock.reserved memory. e.g. trim_snb_memory()

Sure, I can do that. I will send an update if there's no other comments.

> >> +		if (r->nid != MAX_NUMNODES)
> >> +			node_set(r->nid, numa_kernel_nodes);
> >>  
> >>  	/* Clear MEMBLOCK_HOTPLUG flag for memory in kernel nodes. */
> >>  	for (i = 0; i < numa_meminfo.nr_blks; i++) {
> >>
> > 
> 

Thanks
Dave
> 
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