diff options
author | Yuri Tikhonov <yur@emcraft.com> | 2008-02-02 02:47:31 -0500 |
---|---|---|
committer | Kumar Gala <galak@kernel.crashing.org> | 2008-03-07 17:56:54 -0500 |
commit | 1757f2d12dce775982aaa006bce1cf4f7ce90111 (patch) | |
tree | 068d45767a864ad383ece702fbcbcf3cd2e2752e /include/asm-ppc | |
parent | 3e0d65bf6d5b464949b749a8da7977f6b197d301 (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.h | 8 |
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 */ |