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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2009-09-22 18:12:26 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2009-09-24 15:31:49 +1000
commitf32af63ed1327451cb91e3816fa043b6c2c52db1 (patch)
treeccce3ffd1995ea3404c7984c34bc93fafb3740d6 /arch/powerpc/include/asm/pte-8xx.h
parent142597dbbd8a1d516af3dacfa00037f21612e865 (diff)
downloadlinux-f32af63ed1327451cb91e3816fa043b6c2c52db1.tar.gz
powerpc/mm: Fix 40x and 8xx vs. _PAGE_SPECIAL
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>
Diffstat (limited to 'arch/powerpc/include/asm/pte-8xx.h')
-rw-r--r--arch/powerpc/include/asm/pte-8xx.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/pte-8xx.h b/arch/powerpc/include/asm/pte-8xx.h
index 94e979718dcf..dd5ea95fe61e 100644
--- a/arch/powerpc/include/asm/pte-8xx.h
+++ b/arch/powerpc/include/asm/pte-8xx.h
@@ -32,6 +32,7 @@
 #define _PAGE_FILE	0x0002	/* when !present: nonlinear file mapping */
 #define _PAGE_NO_CACHE	0x0002	/* I: cache inhibit */
 #define _PAGE_SHARED	0x0004	/* No ASID (context) compare */
+#define _PAGE_SPECIAL	0x0008	/* SW entry, forced to 0 by the TLB miss */
 
 /* These five software bits must be masked out when the entry is loaded
  * into the TLB.