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

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Message-ID: <20080218112621.GA24147@one.firstfloor.org>
Date:	Mon, 18 Feb 2008 12:26:21 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	"Huang, Ying" <ying.huang@...el.com>
Cc:	Ingo Molnar <mingo@...e.hu>, Andi Kleen <andi@...stfloor.org>,
	torvalds@...l.org, tglx@...utronix.de, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Fix left over EFI cache mapping problems

> After looking up in UEFI specification, I found that it is specified by

Thanks.

> UEFI specification 2.1 (section 6.2, page 124) that the NumberOfPages
> (num_pages) of EFI_MEMORY_DESCRIPTOR (efi_memory_desc_t) must be "Number
> of 4KB pages in the memory region". So we need not worry about potential
> EFI_PAGE_SHIFT changes.

Then it would be cleaner to just use PAGE_SIZE in the x86 specific EFI
code imho.

-Andi
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