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-rw-r--r--arch/powerpc/kernel/exceptions-64e.S82
1 files changed, 46 insertions, 36 deletions
diff --git a/arch/powerpc/kernel/exceptions-64e.S b/arch/powerpc/kernel/exceptions-64e.S
index 89e1133b018..0204c39f438 100644
--- a/arch/powerpc/kernel/exceptions-64e.S
+++ b/arch/powerpc/kernel/exceptions-64e.S
@@ -151,7 +151,7 @@
/* Core exception code for all exceptions except TLB misses.
* XXX: Needs to make SPRN_SPRG_GEN depend on exception type
*/
-#define EXCEPTION_COMMON(n, excf, ints) \
+#define EXCEPTION_COMMON(n, excf) \
exc_##n##_common: \
std r0,GPR0(r1); /* save r0 in stackframe */ \
std r2,GPR2(r1); /* save r2 in stackframe */ \
@@ -188,24 +188,20 @@ exc_##n##_common: \
std r11,SOFTE(r1); /* and save it to stackframe */ \
std r12,STACK_FRAME_OVERHEAD-16(r1); /* mark the frame */ \
std r3,_TRAP(r1); /* set trap number */ \
- std r0,RESULT(r1); /* clear regs->result */ \
- ints;
+ std r0,RESULT(r1); /* clear regs->result */
-/* Variants for the "ints" argument. This one does nothing when we want
- * to keep interrupts in their original state
- */
-#define INTS_KEEP
-
-/* This second version is meant for exceptions that don't immediately
- * hard-enable. We set a bit in paca->irq_happened to ensure that
- * a subsequent call to arch_local_irq_restore() will properly
- * hard-enable and avoid the fast-path, and then reconcile irq state.
+/*
+ * This is meant for exceptions that don't immediately hard-enable. We
+ * set a bit in paca->irq_happened to ensure that a subsequent call to
+ * arch_local_irq_restore() will properly hard-enable and avoid the
+ * fast-path, and then reconcile irq state.
*/
#define INTS_DISABLE RECONCILE_IRQ_STATE(r3,r4)
-/* This is called by exceptions that used INTS_KEEP (that did not touch
- * irq indicators in the PACA). This will restore MSR:EE to it's previous
- * value
+/*
+ * This is called by exceptions that don't use INTS_DISABLE (that did not
+ * touch irq indicators in the PACA). This will restore MSR:EE to it's
+ * previous value
*
* XXX In the long run, we may want to open-code it in order to separate the
* load from the wrtee, thus limiting the latency caused by the dependency
@@ -263,7 +259,8 @@ exc_##n##_bad_stack: \
#define MASKABLE_EXCEPTION(trapnum, intnum, label, hdlr, ack) \
START_EXCEPTION(label); \
NORMAL_EXCEPTION_PROLOG(trapnum, intnum, PROLOG_ADDITION_MASKABLE)\
- EXCEPTION_COMMON(trapnum, PACA_EXGEN, INTS_DISABLE) \
+ EXCEPTION_COMMON(trapnum, PACA_EXGEN) \
+ INTS_DISABLE; \
ack(r8); \
CHECK_NAPPING(); \
addi r3,r1,STACK_FRAME_OVERHEAD; \
@@ -318,7 +315,8 @@ interrupt_end_book3e:
START_EXCEPTION(critical_input);
CRIT_EXCEPTION_PROLOG(0x100, BOOKE_INTERRUPT_CRITICAL,
PROLOG_ADDITION_NONE)
-// EXCEPTION_COMMON(0x100, PACA_EXCRIT, INTS_DISABLE)
+// EXCEPTION_COMMON(0x100, PACA_EXCRIT)
+// INTS_DISABLE
// bl special_reg_save_crit
// CHECK_NAPPING();
// addi r3,r1,STACK_FRAME_OVERHEAD
@@ -330,7 +328,8 @@ interrupt_end_book3e:
START_EXCEPTION(machine_check);
MC_EXCEPTION_PROLOG(0x000, BOOKE_INTERRUPT_MACHINE_CHECK,
PROLOG_ADDITION_NONE)
-// EXCEPTION_COMMON(0x000, PACA_EXMC, INTS_DISABLE)
+// EXCEPTION_COMMON(0x000, PACA_EXMC)
+// INTS_DISABLE
// bl special_reg_save_mc
// addi r3,r1,STACK_FRAME_OVERHEAD
// CHECK_NAPPING();
@@ -344,7 +343,8 @@ interrupt_end_book3e:
PROLOG_ADDITION_2REGS)
mfspr r14,SPRN_DEAR
mfspr r15,SPRN_ESR
- EXCEPTION_COMMON(0x300, PACA_EXGEN, INTS_DISABLE)
+ EXCEPTION_COMMON(0x300, PACA_EXGEN)
+ INTS_DISABLE
b storage_fault_common
/* Instruction Storage Interrupt */
@@ -353,7 +353,8 @@ interrupt_end_book3e:
PROLOG_ADDITION_2REGS)
li r15,0
mr r14,r10
- EXCEPTION_COMMON(0x400, PACA_EXGEN, INTS_DISABLE)
+ EXCEPTION_COMMON(0x400, PACA_EXGEN)
+ INTS_DISABLE
b storage_fault_common
/* External Input Interrupt */
@@ -366,7 +367,7 @@ interrupt_end_book3e:
PROLOG_ADDITION_2REGS)
mfspr r14,SPRN_DEAR
mfspr r15,SPRN_ESR
- EXCEPTION_COMMON(0x600, PACA_EXGEN, INTS_KEEP)
+ EXCEPTION_COMMON(0x600, PACA_EXGEN)
b alignment_more /* no room, go out of line */
/* Program Interrupt */
@@ -374,7 +375,8 @@ interrupt_end_book3e:
NORMAL_EXCEPTION_PROLOG(0x700, BOOKE_INTERRUPT_PROGRAM,
PROLOG_ADDITION_1REG)
mfspr r14,SPRN_ESR
- EXCEPTION_COMMON(0x700, PACA_EXGEN, INTS_DISABLE)
+ EXCEPTION_COMMON(0x700, PACA_EXGEN)
+ INTS_DISABLE
std r14,_DSISR(r1)
addi r3,r1,STACK_FRAME_OVERHEAD
ld r14,PACA_EXGEN+EX_R14(r13)
@@ -387,7 +389,7 @@ interrupt_end_book3e:
NORMAL_EXCEPTION_PROLOG(0x800, BOOKE_INTERRUPT_FP_UNAVAIL,
PROLOG_ADDITION_NONE)
/* we can probably do a shorter exception entry for that one... */
- EXCEPTION_COMMON(0x800, PACA_EXGEN, INTS_KEEP)
+ EXCEPTION_COMMON(0x800, PACA_EXGEN)
ld r12,_MSR(r1)
andi. r0,r12,MSR_PR;
beq- 1f
@@ -404,7 +406,7 @@ interrupt_end_book3e:
NORMAL_EXCEPTION_PROLOG(0x200, BOOKE_INTERRUPT_SPE_ALTIVEC_UNAVAIL,
PROLOG_ADDITION_NONE)
/* we can probably do a shorter exception entry for that one... */
- EXCEPTION_COMMON(0x200, PACA_EXGEN, INTS_KEEP)
+ EXCEPTION_COMMON(0x200, PACA_EXGEN)
#ifdef CONFIG_ALTIVEC
BEGIN_FTR_SECTION
ld r12,_MSR(r1)
@@ -426,7 +428,8 @@ END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC)
NORMAL_EXCEPTION_PROLOG(0x220,
BOOKE_INTERRUPT_SPE_FP_DATA_ALTIVEC_ASSIST,
PROLOG_ADDITION_NONE)
- EXCEPTION_COMMON(0x220, PACA_EXGEN, INTS_DISABLE)
+ EXCEPTION_COMMON(0x220, PACA_EXGEN)
+ INTS_DISABLE
bl .save_nvgprs
addi r3,r1,STACK_FRAME_OVERHEAD
#ifdef CONFIG_ALTIVEC
@@ -451,7 +454,8 @@ END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC)
START_EXCEPTION(watchdog);
CRIT_EXCEPTION_PROLOG(0x9f0, BOOKE_INTERRUPT_WATCHDOG,
PROLOG_ADDITION_NONE)
-// EXCEPTION_COMMON(0x9f0, PACA_EXCRIT, INTS_DISABLE)
+// EXCEPTION_COMMON(0x9f0, PACA_EXCRIT)
+// INTS_DISABLE
// bl special_reg_save_crit
// CHECK_NAPPING();
// addi r3,r1,STACK_FRAME_OVERHEAD
@@ -471,7 +475,8 @@ END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC)
START_EXCEPTION(ap_unavailable);
NORMAL_EXCEPTION_PROLOG(0xf20, BOOKE_INTERRUPT_AP_UNAVAIL,
PROLOG_ADDITION_NONE)
- EXCEPTION_COMMON(0xf20, PACA_EXGEN, INTS_DISABLE)
+ EXCEPTION_COMMON(0xf20, PACA_EXGEN)
+ INTS_DISABLE
bl .save_nvgprs
addi r3,r1,STACK_FRAME_OVERHEAD
bl .unknown_exception
@@ -530,7 +535,8 @@ END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC)
mfspr r15,SPRN_SPRG_CRIT_SCRATCH
mtspr SPRN_SPRG_GEN_SCRATCH,r15
mfspr r14,SPRN_DBSR
- EXCEPTION_COMMON(0xd00, PACA_EXCRIT, INTS_DISABLE)
+ EXCEPTION_COMMON(0xd00, PACA_EXCRIT)
+ INTS_DISABLE
std r14,_DSISR(r1)
addi r3,r1,STACK_FRAME_OVERHEAD
mr r4,r14
@@ -596,7 +602,8 @@ kernel_dbg_exc:
mfspr r15,SPRN_SPRG_DBG_SCRATCH
mtspr SPRN_SPRG_GEN_SCRATCH,r15
mfspr r14,SPRN_DBSR
- EXCEPTION_COMMON(0xd08, PACA_EXDBG, INTS_DISABLE)
+ EXCEPTION_COMMON(0xd08, PACA_EXDBG)
+ INTS_DISABLE
std r14,_DSISR(r1)
addi r3,r1,STACK_FRAME_OVERHEAD
mr r4,r14
@@ -609,7 +616,8 @@ kernel_dbg_exc:
START_EXCEPTION(perfmon);
NORMAL_EXCEPTION_PROLOG(0x260, BOOKE_INTERRUPT_PERFORMANCE_MONITOR,
PROLOG_ADDITION_NONE)
- EXCEPTION_COMMON(0x260, PACA_EXGEN, INTS_DISABLE)
+ EXCEPTION_COMMON(0x260, PACA_EXGEN)
+ INTS_DISABLE
CHECK_NAPPING()
addi r3,r1,STACK_FRAME_OVERHEAD
bl .performance_monitor_exception
@@ -623,7 +631,8 @@ kernel_dbg_exc:
START_EXCEPTION(doorbell_crit);
CRIT_EXCEPTION_PROLOG(0x2a0, BOOKE_INTERRUPT_DOORBELL_CRITICAL,
PROLOG_ADDITION_NONE)
-// EXCEPTION_COMMON(0x2a0, PACA_EXCRIT, INTS_DISABLE)
+// EXCEPTION_COMMON(0x2a0, PACA_EXCRIT)
+// INTS_DISABLE
// bl special_reg_save_crit
// CHECK_NAPPING();
// addi r3,r1,STACK_FRAME_OVERHEAD
@@ -638,7 +647,7 @@ kernel_dbg_exc:
START_EXCEPTION(guest_doorbell);
GDBELL_EXCEPTION_PROLOG(0x2c0, BOOKE_INTERRUPT_GUEST_DBELL,
PROLOG_ADDITION_NONE)
- EXCEPTION_COMMON(0x2c0, PACA_EXGEN, INTS_KEEP)
+ EXCEPTION_COMMON(0x2c0, PACA_EXGEN)
addi r3,r1,STACK_FRAME_OVERHEAD
bl .save_nvgprs
INTS_RESTORE_HARD
@@ -649,7 +658,8 @@ kernel_dbg_exc:
START_EXCEPTION(guest_doorbell_crit);
CRIT_EXCEPTION_PROLOG(0x2e0, BOOKE_INTERRUPT_GUEST_DBELL_CRIT,
PROLOG_ADDITION_NONE)
-// EXCEPTION_COMMON(0x2e0, PACA_EXCRIT, INTS_DISABLE)
+// EXCEPTION_COMMON(0x2e0, PACA_EXCRIT)
+// INTS_DISABLE
// bl special_reg_save_crit
// CHECK_NAPPING();
// addi r3,r1,STACK_FRAME_OVERHEAD
@@ -661,7 +671,7 @@ kernel_dbg_exc:
START_EXCEPTION(hypercall);
NORMAL_EXCEPTION_PROLOG(0x310, BOOKE_INTERRUPT_HV_SYSCALL,
PROLOG_ADDITION_NONE)
- EXCEPTION_COMMON(0x310, PACA_EXGEN, INTS_KEEP)
+ EXCEPTION_COMMON(0x310, PACA_EXGEN)
addi r3,r1,STACK_FRAME_OVERHEAD
bl .save_nvgprs
INTS_RESTORE_HARD
@@ -672,7 +682,7 @@ kernel_dbg_exc:
START_EXCEPTION(ehpriv);
NORMAL_EXCEPTION_PROLOG(0x320, BOOKE_INTERRUPT_HV_PRIV,
PROLOG_ADDITION_NONE)
- EXCEPTION_COMMON(0x320, PACA_EXGEN, INTS_KEEP)
+ EXCEPTION_COMMON(0x320, PACA_EXGEN)
addi r3,r1,STACK_FRAME_OVERHEAD
bl .save_nvgprs
INTS_RESTORE_HARD
@@ -683,7 +693,7 @@ kernel_dbg_exc:
START_EXCEPTION(lrat_error);
NORMAL_EXCEPTION_PROLOG(0x340, BOOKE_INTERRUPT_LRAT_ERROR,
PROLOG_ADDITION_NONE)
- EXCEPTION_COMMON(0x340, PACA_EXGEN, INTS_KEEP)
+ EXCEPTION_COMMON(0x340, PACA_EXGEN)
addi r3,r1,STACK_FRAME_OVERHEAD
bl .save_nvgprs
INTS_RESTORE_HARD
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-16 11:41:53 +0000