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Date:	Tue, 14 Nov 2006 02:46:28 +0100
From:	Andi Kleen <>
Cc:	linux kernel mailing list <>,
	Reloc Kernel List <>,,,,,,
Subject: Re: [RFC] [PATCH 2/16] x86_64: Assembly safe page.h and pgtable.h

> I think we need these UL suffixes. Otherwise in some cases overflow
> can take place and compiler emits warning.
> For ex. in following definition I got rid of UL.
> #define PGDIR_SIZE      (1 << PGDIR_SHIFT) 

Yes for the shifts it is needed, but not for the unshifted constants.
I think. At least when they're hex the compiler should chose the right
type on its own.

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