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authorYuri Tikhonov <yur@emcraft.com>2008-02-02 02:47:31 -0500
committerKumar Gala <galak@kernel.crashing.org>2008-03-07 17:56:54 -0500
commit1757f2d12dce775982aaa006bce1cf4f7ce90111 (patch)
tree068d45767a864ad383ece702fbcbcf3cd2e2752e /include/asm-ppc
parent3e0d65bf6d5b464949b749a8da7977f6b197d301 (diff)
[PPC] 8xx: swap bug-fix
This makes swap routines operate correctly on the ppc_8xx based machines. Recent kernel's size makes swap feature very important on low-memory platfor those are actually non-operable without it. Signed-off-by: Yuri Tikhonov <yur@emcraft.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'include/asm-ppc')
-rw-r--r--include/asm-ppc/pgtable.h8
1 files changed, 0 insertions, 8 deletions
diff --git a/include/asm-ppc/pgtable.h b/include/asm-ppc/pgtable.h
index 69347bdbb401..70435d32129a 100644
--- a/include/asm-ppc/pgtable.h
+++ b/include/asm-ppc/pgtable.h
@@ -299,14 +299,6 @@ extern unsigned long ioremap_bot, ioremap_base;
299#define _PMD_PAGE_MASK 0x000c 299#define _PMD_PAGE_MASK 0x000c
300#define _PMD_PAGE_8M 0x000c 300#define _PMD_PAGE_8M 0x000c
301 301
302/*
303 * The 8xx TLB miss handler allegedly sets _PAGE_ACCESSED in the PTE
304 * for an address even if _PAGE_PRESENT is not set, as a performance
305 * optimization. This is a bug if you ever want to use swap unless
306 * _PAGE_ACCESSED is 2, which it isn't, or unless you have 8xx-specific
307 * definitions for __swp_entry etc. below, which would be gross.
308 * -- paulus
309 */
310#define _PTE_NONE_MASK _PAGE_ACCESSED 302#define _PTE_NONE_MASK _PAGE_ACCESSED
311 303
312#else /* CONFIG_6xx */ 304#else /* CONFIG_6xx */