From 7a6bbdc9304b45cc759e03623cbe63d81aff7337 Mon Sep 17 00:00:00 2001 From: Michal Simek Date: Mon, 22 Mar 2010 20:37:23 +0100 Subject: microblaze: Prepare work for optimization in exception code Any sync branch must follow mts instructions not mfs. Signed-off-by: Michal Simek --- arch/microblaze/kernel/hw_exception_handler.S | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) (limited to 'arch/microblaze/kernel') diff --git a/arch/microblaze/kernel/hw_exception_handler.S b/arch/microblaze/kernel/hw_exception_handler.S index 6651bb437db2..ad6dbf029e6b 100644 --- a/arch/microblaze/kernel/hw_exception_handler.S +++ b/arch/microblaze/kernel/hw_exception_handler.S @@ -562,7 +562,6 @@ ex_handler_done: */ mfs r11, rpid nop - bri 4 mfs r3, rear /* Get faulting address */ nop /* If we are faulting a kernel address, we have to use the @@ -679,18 +678,17 @@ ex_handler_done: */ handle_data_tlb_miss_exception: /* Working registers already saved: R3, R4, R5, R6 - * R3 = ESR + * R3 = EAR, R4 = ESR */ mfs r11, rpid nop - bri 4 mfs r3, rear /* Get faulting address */ nop /* If we are faulting a kernel address, we have to use the * kernel page tables. */ - ori r4, r0, CONFIG_KERNEL_START - cmpu r4, r3, r4 + ori r6, r0, CONFIG_KERNEL_START + cmpu r4, r3, r6 bgti r4, ex5 ori r4, r0, swapper_pg_dir mts rpid, r0 /* TLB will have 0 TID */ @@ -756,7 +754,6 @@ ex_handler_done: */ mfs r11, rpid nop - bri 4 mfs r3, rear /* Get faulting address */ nop -- cgit v1.2.1