linux-kernel - Re: [PATCH] x86_64: fix overlap between pagetable with bss section

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Message-id: <200801291003.14741.yinghai.lu@sun.com>
Date:	Tue, 29 Jan 2008 10:03:14 -0800
From:	Yinghai Lu <Yinghai.Lu@....COM>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: Re: [PATCH] x86_64: fix overlap between pagetable with bss section

On Tuesday 29 January 2008 09:42:43 am Ingo Molnar wrote:
> 
> * Yinghai Lu <Yinghai.Lu@....COM> wrote:
> 
> > [PATCH] x86_64: fix overlap between pagetable with bss section
> > 
> > one early crash on one 8 node 256g machine
> 
> > +++ b/arch/x86/mm/init_64.c
> > @@ -358,6 +358,8 @@ static void __init find_early_table_space(unsigned long end)
> >  	if (table_start == -1UL)
> >  		panic("Cannot find space for the kernel page tables");
> >  
> > +	/* need to round it up to avoid overlap less one page */
> > +	table_start = round_up(table_start, PAGE_SIZE);
> >  	table_start >>= PAGE_SHIFT;
> >  	table_end = table_start;
> 
> thanks, applied.
> 
> 	Ingo
> 

can you use v2 instead? v2 have more comments.

Thanks

Yinghai Lu
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