linux-kernel - Re: [PATCH] Fix left over EFI cache mapping problems

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Message-Id: <1203067262.30010.34.camel@caritas-dev.intel.com>
Date:	Fri, 15 Feb 2008 17:21:02 +0800
From:	"Huang, Ying" <ying.huang@...el.com>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	Ingo Molnar <mingo@...e.hu>, torvalds@...l.org, tglx@...utronix.de,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Fix left over EFI cache mapping problems

On Fri, 2008-02-15 at 09:48 +0100, Andi Kleen wrote:
> On Fri, Feb 15, 2008 at 12:48:06PM +0800, Huang, Ying wrote:
> > 
> > This patch has been tested on Intel x86 platform with EFI 32/64.
> 
> Can EFI_PAGE_SIZE ever be < 4k? If yes you would need to round up
> first to linux page size before shifting.

Yes. It is needed. And md->virt_addr should be processed as follow:

md->virt_addr & PAGE_MASK

before fed into set_memory_*.

Best Regards,
Huang Ying

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