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From: Ingo Molnar <mingo@elte.hu>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: "Huang, Ying" <ying.huang@intel.com>,
	Andi Kleen <andi@firstfloor.org>,
	tglx@linutronix.de, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Fix left over EFI cache mapping problems
Date: Fri, 15 Feb 2008 08:30:26 +0100	[thread overview]
Message-ID: <20080215073026.GA25583@elte.hu> (raw)
In-Reply-To: <alpine.LFD.1.00.0802142139260.4255@woody.linux-foundation.org>


* Linus Torvalds <torvalds@linux-foundation.org> wrote:

> So *if* we care (I doubt we do, since EFI_PAGE_SHIFT at least right 
> now matches PAGE_SHIFT on x86), you'd probably want to do something 
> like
> 
>   static inline unsigned long efi_pages_to_native_pages(unsigned long efi_pages)
>   {
>   #if EFI_PAGE_SHIFT > PAGE_SHIFT
> 	return efi_pages << (EFI_PAGE_SHIFT - PAGE_SHIFT);
>   #else
> 	return efi_pages >> (PAGE_SHIFT - EFI_PAGE_SHIFT);
>   #endif
>   }

yeah, this is even cleaner - i guess EFI_PAGE_SHIFT will be around in 
the future too because it's also used on ia64.

	Ingo

  parent reply	other threads:[~2008-02-15  7:30 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-02-14 13:13 Andi Kleen
2008-02-14 16:12 ` Ingo Molnar
2008-02-14 17:16   ` Andi Kleen
2008-02-14 18:38     ` Ingo Molnar
2008-02-14 21:42       ` Andi Kleen
2008-02-14 22:08         ` Arjan van de Ven
2008-02-14 23:01           ` Andi Kleen
2008-02-15  2:52       ` Huang, Ying
2008-02-15  8:55         ` Andi Kleen
2008-02-15  9:16           ` Huang, Ying
2008-02-15  4:48   ` Huang, Ying
2008-02-15  5:44     ` Linus Torvalds
2008-02-15  6:24       ` Huang, Ying
2008-02-15  7:30       ` Ingo Molnar [this message]
2008-02-15  7:08     ` Ingo Molnar
2008-02-15  7:32       ` Huang, Ying
2008-02-18  1:53       ` Huang, Ying
2008-02-18 11:26         ` Andi Kleen
2008-02-18 14:05           ` Ingo Molnar
2008-02-15  8:48     ` Andi Kleen
2008-02-15  9:21       ` Huang, Ying
2008-02-15  9:43         ` Andi Kleen

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