diff options
Diffstat (limited to 'arch/powerpc/kernel/head_40x.S')
| -rw-r--r-- | arch/powerpc/kernel/head_40x.S | 24 |
1 files changed, 10 insertions, 14 deletions
diff --git a/arch/powerpc/kernel/head_40x.S b/arch/powerpc/kernel/head_40x.S index 8552e67e3a8b..56d8e5d90c5b 100644 --- a/arch/powerpc/kernel/head_40x.S +++ b/arch/powerpc/kernel/head_40x.S @@ -93,6 +93,12 @@ _ENTRY(crit_r10) .space 4 _ENTRY(crit_r11) .space 4 +_ENTRY(crit_srr0) + .space 4 +_ENTRY(crit_srr1) + .space 4 +_ENTRY(saved_ksp_limit) + .space 4 /* * Exception vector entry code. This code runs with address translation @@ -148,14 +154,14 @@ _ENTRY(crit_r11) mfcr r10; /* save CR in r10 for now */\ mfspr r11,SPRN_SRR3; /* check whether user or kernel */\ andi. r11,r11,MSR_PR; \ - lis r11,critical_stack_top@h; \ - ori r11,r11,critical_stack_top@l; \ + lis r11,critirq_ctx@ha; \ + tophys(r11,r11); \ + lwz r11,critirq_ctx@l(r11); \ beq 1f; \ /* COMING FROM USER MODE */ \ mfspr r11,SPRN_SPRG3; /* if from user, start at top of */\ lwz r11,THREAD_INFO-THREAD(r11); /* this thread's kernel stack */\ - addi r11,r11,THREAD_SIZE; \ -1: subi r11,r11,INT_FRAME_SIZE; /* Allocate an exception frame */\ +1: addi r11,r11,THREAD_SIZE-INT_FRAME_SIZE; /* Alloc an excpt frm */\ tophys(r11,r11); \ stw r10,_CCR(r11); /* save various registers */\ stw r12,GPR12(r11); \ @@ -996,16 +1002,6 @@ empty_zero_page: swapper_pg_dir: .space PGD_TABLE_SIZE - -/* Stack for handling critical exceptions from kernel mode */ - .section .bss - .align 12 -exception_stack_bottom: - .space 4096 -critical_stack_top: - .globl exception_stack_top -exception_stack_top: - /* Room for two PTE pointers, usually the kernel and current user pointers * to their respective root page table. */ |