powerpc/64s: reconcile interrupts in C

There is no need for this to be in asm, use the new intrrupt entry wrapper.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210130130852.2952424-37-npiggin@gmail.com

arch/powerpc/include/asm/interrupt.h

@@ -14,11 +14,14 @@ struct interrupt_state {
 
 static inline void interrupt_enter_prepare(struct pt_regs *regs, struct interrupt_state *state)
 {
-#ifdef CONFIG_PPC_BOOK3E_64
-	state->ctx_state = exception_enter();
-#endif
-
+	/*
+	 * Book3E reconciles irq soft mask in asm
+	 */
 #ifdef CONFIG_PPC_BOOK3S_64
+	if (irq_soft_mask_set_return(IRQS_ALL_DISABLED) == IRQS_ENABLED)
+		trace_hardirqs_off();
+	local_paca->irq_happened |= PACA_IRQ_HARD_DIS;
+
 	if (user_mode(regs)) {
 		CT_WARN_ON(ct_state() != CONTEXT_USER);
 		user_exit_irqoff();
@@ -31,6 +34,10 @@ static inline void interrupt_enter_prepare(struct pt_regs *regs, struct interrup
 			CT_WARN_ON(ct_state() != CONTEXT_KERNEL);
 	}
 #endif
+
+#ifdef CONFIG_PPC_BOOK3E_64
+	state->ctx_state = exception_enter();
+#endif
 }
 
 /*

arch/powerpc/kernel/exceptions-64s.S

@@ -139,7 +139,6 @@ name:
 #define IKVM_VIRT	.L_IKVM_VIRT_\name\()	/* Virt entry tests KVM */
 #define ISTACK		.L_ISTACK_\name\()	/* Set regular kernel stack */
 #define __ISTACK(name)	.L_ISTACK_ ## name
-#define IRECONCILE	.L_IRECONCILE_\name\()	/* Do RECONCILE_IRQ_STATE */
 #define IKUAP		.L_IKUAP_\name\()	/* Do KUAP lock */
 
 #define INT_DEFINE_BEGIN(n)						\
@@ -203,9 +202,6 @@ do_define_int n
 	.ifndef ISTACK
 		ISTACK=1
 	.endif
-	.ifndef IRECONCILE
-		IRECONCILE=1
-	.endif
 	.ifndef IKUAP
 		IKUAP=1
 	.endif
@@ -653,10 +649,6 @@ END_FTR_SECTION_IFSET(CPU_FTR_CFAR)
 	.if ISTACK
 	ACCOUNT_STOLEN_TIME
 	.endif
-
-	.if IRECONCILE
-	RECONCILE_IRQ_STATE(r10, r11)
-	.endif
 .endm
 
 /*
@@ -935,7 +927,6 @@ INT_DEFINE_BEGIN(system_reset)
 	 */
 	ISET_RI=0
 	ISTACK=0
-	IRECONCILE=0
 	IKVM_REAL=1
 INT_DEFINE_END(system_reset)
 
@@ -1123,7 +1114,6 @@ INT_DEFINE_BEGIN(machine_check_early)
 	ISTACK=0
 	IDAR=1
 	IDSISR=1
-	IRECONCILE=0
 	IKUAP=0 /* We don't touch AMR here, we never go to virtual mode */
 INT_DEFINE_END(machine_check_early)
 
@@ -1483,7 +1473,6 @@ ALT_MMU_FTR_SECTION_END_IFCLR(MMU_FTR_TYPE_RADIX)
 INT_DEFINE_BEGIN(data_access_slb)
 	IVEC=0x380
 	IAREA=PACA_EXSLB
-	IRECONCILE=0
 	IDAR=1
 	IKVM_SKIP=1
 	IKVM_REAL=1
@@ -1510,7 +1499,6 @@ MMU_FTR_SECTION_ELSE
 	li	r3,-EFAULT
 ALT_MMU_FTR_SECTION_END_IFCLR(MMU_FTR_TYPE_RADIX)
 	std	r3,RESULT(r1)
-	RECONCILE_IRQ_STATE(r10, r11)
 	addi	r3,r1,STACK_FRAME_OVERHEAD
 	bl	do_bad_slb_fault
 	b	interrupt_return
@@ -1568,7 +1556,6 @@ ALT_MMU_FTR_SECTION_END_IFCLR(MMU_FTR_TYPE_RADIX)
 INT_DEFINE_BEGIN(instruction_access_slb)
 	IVEC=0x480
 	IAREA=PACA_EXSLB
-	IRECONCILE=0
 	IISIDE=1
 	IDAR=1
 #ifdef CONFIG_KVM_BOOK3S_PR_POSSIBLE
@@ -1597,7 +1584,6 @@ MMU_FTR_SECTION_ELSE
 	li	r3,-EFAULT
 ALT_MMU_FTR_SECTION_END_IFCLR(MMU_FTR_TYPE_RADIX)
 	std	r3,RESULT(r1)
-	RECONCILE_IRQ_STATE(r10, r11)
 	addi	r3,r1,STACK_FRAME_OVERHEAD
 	bl	do_bad_slb_fault
 	b	interrupt_return
@@ -1757,7 +1743,6 @@ EXC_COMMON_BEGIN(program_check_common)
  */
 INT_DEFINE_BEGIN(fp_unavailable)
 	IVEC=0x800
-	IRECONCILE=0
 #ifdef CONFIG_KVM_BOOK3S_PR_POSSIBLE
 	IKVM_REAL=1
 #endif
@@ -1772,7 +1757,6 @@ EXC_VIRT_END(fp_unavailable, 0x4800, 0x100)
 EXC_COMMON_BEGIN(fp_unavailable_common)
 	GEN_COMMON fp_unavailable
 	bne	1f			/* if from user, just load it up */
-	RECONCILE_IRQ_STATE(r10, r11)
 	addi	r3,r1,STACK_FRAME_OVERHEAD
 	bl	kernel_fp_unavailable_exception
 0:	trap
@@ -1791,7 +1775,6 @@ END_FTR_SECTION_IFSET(CPU_FTR_TM)
 	b	fast_interrupt_return
 #ifdef CONFIG_PPC_TRANSACTIONAL_MEM
 2:	/* User process was in a transaction */
-	RECONCILE_IRQ_STATE(r10, r11)
 	addi	r3,r1,STACK_FRAME_OVERHEAD
 	bl	fp_unavailable_tm
 	b	interrupt_return
@@ -1856,7 +1839,6 @@ INT_DEFINE_BEGIN(hdecrementer)
 	IVEC=0x980
 	IHSRR=1
 	ISTACK=0
-	IRECONCILE=0
 	IKVM_REAL=1
 	IKVM_VIRT=1
 INT_DEFINE_END(hdecrementer)
@@ -2230,7 +2212,6 @@ INT_DEFINE_BEGIN(hmi_exception_early)
 	IHSRR=1
 	IREALMODE_COMMON=1
 	ISTACK=0
-	IRECONCILE=0
 	IKUAP=0 /* We don't touch AMR here, we never go to virtual mode */
 	IKVM_REAL=1
 INT_DEFINE_END(hmi_exception_early)
@@ -2404,7 +2385,6 @@ EXC_COMMON_BEGIN(performance_monitor_common)
  */
 INT_DEFINE_BEGIN(altivec_unavailable)
 	IVEC=0xf20
-	IRECONCILE=0
 #ifdef CONFIG_KVM_BOOK3S_PR_POSSIBLE
 	IKVM_REAL=1
 #endif
@@ -2434,7 +2414,6 @@ BEGIN_FTR_SECTION
 	b	fast_interrupt_return
 #ifdef CONFIG_PPC_TRANSACTIONAL_MEM
 2:	/* User process was in a transaction */
-	RECONCILE_IRQ_STATE(r10, r11)
 	addi	r3,r1,STACK_FRAME_OVERHEAD
 	bl	altivec_unavailable_tm
 	b	interrupt_return
@@ -2442,7 +2421,6 @@ BEGIN_FTR_SECTION
 1:
 END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC)
 #endif
-	RECONCILE_IRQ_STATE(r10, r11)
 	addi	r3,r1,STACK_FRAME_OVERHEAD
 	bl	altivec_unavailable_exception
 	b	interrupt_return
@@ -2458,7 +2436,6 @@ END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC)
  */
 INT_DEFINE_BEGIN(vsx_unavailable)
 	IVEC=0xf40
-	IRECONCILE=0
 #ifdef CONFIG_KVM_BOOK3S_PR_POSSIBLE
 	IKVM_REAL=1
 #endif
@@ -2487,7 +2464,6 @@ BEGIN_FTR_SECTION
 	b	load_up_vsx
 #ifdef CONFIG_PPC_TRANSACTIONAL_MEM
 2:	/* User process was in a transaction */
-	RECONCILE_IRQ_STATE(r10, r11)
 	addi	r3,r1,STACK_FRAME_OVERHEAD
 	bl	vsx_unavailable_tm
 	b	interrupt_return
@@ -2495,7 +2471,6 @@ BEGIN_FTR_SECTION
 1:
 END_FTR_SECTION_IFSET(CPU_FTR_VSX)
 #endif
-	RECONCILE_IRQ_STATE(r10, r11)
 	addi	r3,r1,STACK_FRAME_OVERHEAD
 	bl	vsx_unavailable_exception
 	b	interrupt_return
@@ -2830,7 +2805,6 @@ EXC_VIRT_NONE(0x5800, 0x100)
 INT_DEFINE_BEGIN(soft_nmi)
 	IVEC=0x900
 	ISTACK=0
-	IRECONCILE=0	/* Soft-NMI may fire under local_irq_disable */
 INT_DEFINE_END(soft_nmi)
 
 /*