Re: [PATCH 00 of 10] x86: unify asm/pgtable.h

From: Jeremy Fitzhardinge
Date: Tue Jan 08 2008 - 19:15:12 EST


Ingo Molnar wrote:
* Ingo Molnar <mingo@xxxxxxx> wrote:

#define __PAGE_KERNEL_EXEC \
- (_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_GLOBAL)
+ (_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED)

This shouldn't be necessary. The old 64-bit code defined everything without _PAGE_GLOBAL, but then used a MAKE_GLOBAL() macro to OR it in later. This seemed a bit roundabout to me, so I just put it in from the outset.

btw., __PAGE_KERNEL_EXEC should probably be _PAGE_GLOBAL - but it wasnt before.

You mean _PAGE_KERNEL_EXEC, which is assigned to the 32-bit __PAGE_KERNEL_EXEC variable? It gets ORed in when it determines that the processor has the global capability.

If not, I'm not sure what you mean.

J
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