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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2005-05-31 18:02:00 +0100
committerRussell King <rmk@dyn-67.arm.linux.org.uk>2005-05-31 18:02:00 +0100
commit49f680ea7bac5c679fb6374a326a164a3fba07cc (patch)
tree3555b494abcdbd9fdaa1c3722a81c1923af3c922 /arch/arm/kernel
parent791be9b976ba621b21745c30a7fca225fada9110 (diff)
[PATCH] ARM SMP: convert alignment enable
The current vector entry system does not allow for SMP. In order to work around this, we need to eliminate our reliance on the fixed save areas, which breaks the way we enable alignment traps. This patch makes the alignment trap enable code independent of the way we handle the save areas. Signed-off-by: Russell King <rmk@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/kernel')
-rw-r--r--arch/arm/kernel/entry-armv.S4
-rw-r--r--arch/arm/kernel/entry-header.S7
2 files changed, 6 insertions, 5 deletions
diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S
index a99e686c0b8..cfb5cf5e48f 100644
--- a/arch/arm/kernel/entry-armv.S
+++ b/arch/arm/kernel/entry-armv.S
@@ -269,6 +269,8 @@ __pabt_svc:
.word __temp_und
.LCabt:
.word __temp_abt
+.LCcralign:
+ .word cr_alignment
#ifdef MULTI_ABORT
.LCprocfns:
.word processor
@@ -311,7 +313,7 @@ __pabt_svc:
@
@ Enable the alignment trap while in kernel mode
@
- alignment_trap r7, r0, __temp_\sym
+ alignment_trap r0
@
@ Clear FP to mark the first stack frame
diff --git a/arch/arm/kernel/entry-header.S b/arch/arm/kernel/entry-header.S
index a3d40a0e2b0..afef2127396 100644
--- a/arch/arm/kernel/entry-header.S
+++ b/arch/arm/kernel/entry-header.S
@@ -59,11 +59,10 @@
mov \rd, \rd, lsl #13
.endm
- .macro alignment_trap, rbase, rtemp, sym
+ .macro alignment_trap, rtemp
#ifdef CONFIG_ALIGNMENT_TRAP
-#define OFF_CR_ALIGNMENT(x) cr_alignment - x
-
- ldr \rtemp, [\rbase, #OFF_CR_ALIGNMENT(\sym)]
+ ldr \rtemp, .LCcralign
+ ldr \rtemp, [\rtemp]
mcr p15, 0, \rtemp, c1, c0
#endif
.endm