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powerpc/mm: Fix 40x and 8xx vs. _PAGE_SPECIAL

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The test to check whether we have _PAGE_SPECIAL defined is broken,
since we always define it, just not always to a meaninful value :-)

That broke 8xx and 40x under some circumstances.

This fixes it by adding _PAGE_SPECIAL for both of these since they
had a free PTE bit, and removing the condition around advertising
it.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Benjamin Herrenschmidt
2009-09-22 18:12:26 +00:00
parent 142597dbbd
commit f32af63ed1
3 changed files with 2 additions and 5 deletions
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5
arch/powerpc/include/asm/pte-common.h
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@@ -25,9 +25,6 @@
#ifndef _PAGE_WRITETHRU
#define _PAGE_WRITETHRU 0
#endif
#ifndef _PAGE_SPECIAL
#define _PAGE_SPECIAL 0
#endif
#ifndef _PAGE_4K_PFN
#define _PAGE_4K_PFN 0
#endif
@@ -179,7 +176,5 @@ extern unsigned long bad_call_to_PMD_PAGE_SIZE(void);
#define HAVE_PAGE_AGP
/* Advertise support for _PAGE_SPECIAL */
#ifdef _PAGE_SPECIAL
#define __HAVE_ARCH_PTE_SPECIAL
#endif