X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=arch%2Fpowerpc%2Fkernel%2Fhead_40x.S;h=56d8e5d90c5be0b0518dcefaf2262a8ae97bd5da;hb=0679c2f47d50651018dd5e0bf35330f6e6ae35ec;hp=cfefc2df8f2a082ee94718af19d6ddbc07eee84a;hpb=ebf8889bd1fe3615991ff4494635d237280652a2;p=linux-2.6-omap-h63xx.git

diff --git a/arch/powerpc/kernel/head_40x.S b/arch/powerpc/kernel/head_40x.S
index cfefc2df8f2..56d8e5d90c5 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);						     \
@@ -994,17 +1000,7 @@ empty_zero_page:
 	.space	4096
 	.globl	swapper_pg_dir
 swapper_pg_dir:
-	.space	4096
-
-
-/* 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:
+	.space	PGD_TABLE_SIZE
 
 /* Room for two PTE pointers, usually the kernel and current user pointers
  * to their respective root page table.