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| author | Matt Porter <mporter@kernel.crashing.org> | 2005-05-20 13:59:14 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-05-20 15:48:19 -0700 |
| commit | b2665f92ae67a2d086537979d317a6f3a5697c63 (patch) | |
| tree | 96b1c3edd37aadb0ba23758f6455866b047937d6 | |
| parent | 7f8cd80fb261177244c1479cfcad1387dbf3cd4b (diff) | |
| download | lwn-b2665f92ae67a2d086537979d317a6f3a5697c63.tar.gz lwn-b2665f92ae67a2d086537979d317a6f3a5697c63.zip | |
[PATCH] ppc32: fix CONFIG_TASK_SIZE handling on 44x
This patch fixed CONFIG_TASK_SIZE handling on 44x. Currently head_44x.S
hardcodes 0x80000000, which breaks if user chooses to change TASK_SIZE
(e.g. for 3G user-space). Tested on Ocotea in 3G/1G configuration.
Signed-off-by: Eugene Surovegin <ebs@ebshome.net>
Signed-off-by: Matt Porter <mporter@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | arch/ppc/kernel/head_44x.S | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/arch/ppc/kernel/head_44x.S b/arch/ppc/kernel/head_44x.S index 9b6a8e513657..6c7ae6052464 100644 --- a/arch/ppc/kernel/head_44x.S +++ b/arch/ppc/kernel/head_44x.S @@ -330,8 +330,9 @@ interrupt_base: /* If we are faulting a kernel address, we have to use the * kernel page tables. */ - andis. r11, r10, 0x8000 - beq 3f + lis r11, TASK_SIZE@h + cmplw r10, r11 + blt+ 3f lis r11, swapper_pg_dir@h ori r11, r11, swapper_pg_dir@l @@ -464,8 +465,9 @@ interrupt_base: /* If we are faulting a kernel address, we have to use the * kernel page tables. */ - andis. r11, r10, 0x8000 - beq 3f + lis r11, TASK_SIZE@h + cmplw r10, r11 + blt+ 3f lis r11, swapper_pg_dir@h ori r11, r11, swapper_pg_dir@l @@ -533,8 +535,9 @@ interrupt_base: /* If we are faulting a kernel address, we have to use the * kernel page tables. */ - andis. r11, r10, 0x8000 - beq 3f + lis r11, TASK_SIZE@h + cmplw r10, r11 + blt+ 3f lis r11, swapper_pg_dir@h ori r11, r11, swapper_pg_dir@l |