---

yaml --- r: 4216 b: refs/heads/master c: 8dc4fd8 h: refs/heads/master v: v3
git-mirror · Jul 8, 2005 · 8a5a3f9 · 8a5a3f9
1 parent 19131c1
commit 8a5a3f9
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Showing 3 changed files with 20 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: a2f7a9ce2a5c3d21cc0eb37a03da603b44ba4b09
+refs/heads/master: 8dc4fd87f229414fc38648508aad7def2275fe81
diff --git a/trunk/arch/ppc64/kernel/head.S b/trunk/arch/ppc64/kernel/head.S
@@ -308,13 +308,15 @@ exception_marker:
 label##_pSeries:					\
 	HMT_MEDIUM;					\
 	mtspr	SPRG1,r13;		/* save r13 */	\
+	RUNLATCH_ON(r13);				\
 	EXCEPTION_PROLOG_PSERIES(PACA_EXGEN, label##_common)
 
 #define STD_EXCEPTION_ISERIES(n, label, area)		\
 	.globl label##_iSeries;				\
 label##_iSeries:					\
 	HMT_MEDIUM;					\
 	mtspr	SPRG1,r13;		/* save r13 */	\
+	RUNLATCH_ON(r13);				\
 	EXCEPTION_PROLOG_ISERIES_1(area);		\
 	EXCEPTION_PROLOG_ISERIES_2;			\
 	b	label##_common
@@ -324,6 +326,7 @@ label##_iSeries:					\
 label##_iSeries:							\
 	HMT_MEDIUM;							\
 	mtspr	SPRG1,r13;		/* save r13 */			\
+	RUNLATCH_ON(r13);						\
 	EXCEPTION_PROLOG_ISERIES_1(PACA_EXGEN);				\
 	lbz	r10,PACAPROCENABLED(r13);				\
 	cmpwi	0,r10,0;						\
@@ -393,6 +396,7 @@ __start_interrupts:
 _machine_check_pSeries:
 	HMT_MEDIUM
 	mtspr	SPRG1,r13		/* save r13 */
+	RUNLATCH_ON(r13)
 	EXCEPTION_PROLOG_PSERIES(PACA_EXMC, machine_check_common)
 
 	. = 0x300
@@ -419,6 +423,7 @@ END_FTR_SECTION_IFCLR(CPU_FTR_SLB)
 data_access_slb_pSeries:
 	HMT_MEDIUM
 	mtspr	SPRG1,r13
+	RUNLATCH_ON(r13)
 	mfspr	r13,SPRG3		/* get paca address into r13 */
 	std	r9,PACA_EXSLB+EX_R9(r13)	/* save r9 - r12 */
 	std	r10,PACA_EXSLB+EX_R10(r13)
@@ -439,6 +444,7 @@ data_access_slb_pSeries:
 instruction_access_slb_pSeries:
 	HMT_MEDIUM
 	mtspr	SPRG1,r13
+	RUNLATCH_ON(r13)
 	mfspr	r13,SPRG3		/* get paca address into r13 */
 	std	r9,PACA_EXSLB+EX_R9(r13)	/* save r9 - r12 */
 	std	r10,PACA_EXSLB+EX_R10(r13)
@@ -464,6 +470,7 @@ instruction_access_slb_pSeries:
 	.globl	system_call_pSeries
 system_call_pSeries:
 	HMT_MEDIUM
+	RUNLATCH_ON(r9)
 	mr	r9,r13
 	mfmsr	r10
 	mfspr	r13,SPRG3
@@ -707,11 +714,13 @@ fwnmi_data_area:
 system_reset_fwnmi:
 	HMT_MEDIUM
 	mtspr	SPRG1,r13		/* save r13 */
+	RUNLATCH_ON(r13)
 	EXCEPTION_PROLOG_PSERIES(PACA_EXGEN, system_reset_common)
 	.globl machine_check_fwnmi
 machine_check_fwnmi:
 	HMT_MEDIUM
 	mtspr	SPRG1,r13		/* save r13 */
+	RUNLATCH_ON(r13)
 	EXCEPTION_PROLOG_PSERIES(PACA_EXMC, machine_check_common)
 
 	/*
@@ -848,6 +857,7 @@ unrecov_fer:
 	.align	7
 	.globl data_access_common
 data_access_common:
+	RUNLATCH_ON(r10)		/* It wont fit in the 0x300 handler */
 	mfspr	r10,DAR
 	std	r10,PACA_EXGEN+EX_DAR(r13)
 	mfspr	r10,DSISR

diff --git a/trunk/include/asm-ppc64/processor.h b/trunk/include/asm-ppc64/processor.h
@@ -524,6 +524,15 @@ static inline void ppc64_runlatch_off(void)
 
 #endif /* __ASSEMBLY__ */
 
+#ifdef __KERNEL__
+#define RUNLATCH_ON(REG)			\
+BEGIN_FTR_SECTION				\
+	mfspr	(REG),SPRN_CTRLF;		\
+	ori	(REG),(REG),CTRL_RUNLATCH;	\
+	mtspr	SPRN_CTRLT,(REG);		\
+END_FTR_SECTION_IFSET(CPU_FTR_CTRL)
+#endif
+
 /*
  * Number of entries in the SLB. If this ever changes we should handle
  * it with a use a cpu feature fixup.