From 49f680ea7bac5c679fb6374a326a164a3fba07cc Mon Sep 17 00:00:00 2001 From: Russell King Date: Tue, 31 May 2005 18:02:00 +0100 Subject: [PATCH] [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 --- arch/arm/kernel/entry-armv.S | 4 +++- arch/arm/kernel/entry-header.S | 7 +++---- 2 files changed, 6 insertions(+), 5 deletions(-) diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S index a99e686c0b..cfb5cf5e48 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 a3d40a0e2b..afef212739 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 -- 2.39.5