From: Nicholas Piggin Date: Sat, 22 Jun 2019 13:15:21 +0000 (+1000) Subject: powerpc/64s/exception: Move EXCEPTION_COMMON additions into callers X-Git-Tag: v5.3-rc1~94^2~106 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=47169fba3af465c995a936e6b9c67e0746f4c583;p=linux-2.6-block.git powerpc/64s/exception: Move EXCEPTION_COMMON additions into callers More cases of code insertion via macros that does not add a great deal. All the additions have to be specified in the macro arguments, so they can just as well go after the macro. No generated code change. Signed-off-by: Nicholas Piggin Signed-off-by: Michael Ellerman --- diff --git a/arch/powerpc/include/asm/exception-64s.h b/arch/powerpc/include/asm/exception-64s.h index c98e274b5fba..127ebd8d7746 100644 --- a/arch/powerpc/include/asm/exception-64s.h +++ b/arch/powerpc/include/asm/exception-64s.h @@ -640,21 +640,6 @@ END_FTR_SECTION_NESTED(ftr,ftr,943) EXCEPTION_PROLOG_1 EXC_HV, PACA_EXGEN, 1, vec, bitmask ; \ EXCEPTION_PROLOG_2_VIRT label, EXC_HV -/* - * Our exception common code can be passed various "additions" - * to specify the behaviour of interrupts, whether to kick the - * runlatch, etc... - */ - -/* - * This addition reconciles our actual IRQ state with the various software - * flags that track it. This may call C code. - */ -#define ADD_RECONCILE RECONCILE_IRQ_STATE(r10,r11) - -#define ADD_NVGPRS \ - bl save_nvgprs - #define RUNLATCH_ON \ BEGIN_FTR_SECTION \ ld r3, PACA_THREAD_INFO(r13); \ @@ -663,25 +648,22 @@ BEGIN_FTR_SECTION \ beql ppc64_runlatch_on_trampoline; \ END_FTR_SECTION_IFSET(CPU_FTR_CTRL) -#define EXCEPTION_COMMON(area, trap, label, additions) \ +#define EXCEPTION_COMMON(area, trap) \ EXCEPTION_PROLOG_COMMON(trap, area); \ - /* Volatile regs are potentially clobbered here */ \ - additions /* - * Exception where stack is already set in r1, r1 is saved in r10, and it - * continues rather than returns. + * Exception where stack is already set in r1, r1 is saved in r10 */ -#define EXCEPTION_COMMON_NORET_STACK(area, trap, label, additions) \ +#define EXCEPTION_COMMON_STACK(area, trap) \ EXCEPTION_PROLOG_COMMON_1(); \ kuap_save_amr_and_lock r9, r10, cr1; \ EXCEPTION_PROLOG_COMMON_2(area); \ - EXCEPTION_PROLOG_COMMON_3(trap); \ - /* Volatile regs are potentially clobbered here */ \ - additions + EXCEPTION_PROLOG_COMMON_3(trap) -#define STD_EXCEPTION_COMMON(trap, label, hdlr) \ - EXCEPTION_COMMON(PACA_EXGEN, trap, label, ADD_NVGPRS;ADD_RECONCILE); \ +#define STD_EXCEPTION_COMMON(trap, hdlr) \ + EXCEPTION_COMMON(PACA_EXGEN, trap); \ + bl save_nvgprs; \ + RECONCILE_IRQ_STATE(r10, r11); \ addi r3,r1,STACK_FRAME_OVERHEAD; \ bl hdlr; \ b ret_from_except @@ -691,9 +673,11 @@ END_FTR_SECTION_IFSET(CPU_FTR_CTRL) * in the idle task and therefore need the special idle handling * (finish nap and runlatch) */ -#define STD_EXCEPTION_COMMON_ASYNC(trap, label, hdlr) \ - EXCEPTION_COMMON(PACA_EXGEN, trap, label, \ - FINISH_NAP;ADD_RECONCILE;RUNLATCH_ON); \ +#define STD_EXCEPTION_COMMON_ASYNC(trap, hdlr) \ + EXCEPTION_COMMON(PACA_EXGEN, trap); \ + FINISH_NAP; \ + RECONCILE_IRQ_STATE(r10, r11); \ + RUNLATCH_ON; \ addi r3,r1,STACK_FRAME_OVERHEAD; \ bl hdlr; \ b ret_from_except_lite diff --git a/arch/powerpc/include/asm/head-64.h b/arch/powerpc/include/asm/head-64.h index bdd67a26e959..acd94fcf9f40 100644 --- a/arch/powerpc/include/asm/head-64.h +++ b/arch/powerpc/include/asm/head-64.h @@ -403,11 +403,11 @@ name: #define EXC_COMMON(name, realvec, hdlr) \ EXC_COMMON_BEGIN(name); \ - STD_EXCEPTION_COMMON(realvec, name, hdlr) + STD_EXCEPTION_COMMON(realvec, hdlr) #define EXC_COMMON_ASYNC(name, realvec, hdlr) \ EXC_COMMON_BEGIN(name); \ - STD_EXCEPTION_COMMON_ASYNC(realvec, name, hdlr) + STD_EXCEPTION_COMMON_ASYNC(realvec, hdlr) #endif /* __ASSEMBLY__ */ diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index 7cf0e38875c3..2685c81e28f2 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -164,21 +164,6 @@ EXC_COMMON_BEGIN(system_reset_idle_common) b idle_return_gpr_loss #endif -/* - * Set IRQS_ALL_DISABLED unconditionally so arch_irqs_disabled does - * the right thing. We do not want to reconcile because that goes - * through irq tracing which we don't want in NMI. - * - * Save PACAIRQHAPPENED because some code will do a hard disable - * (e.g., xmon). So we want to restore this back to where it was - * when we return. DAR is unused in the stack, so save it there. - */ -#define ADD_RECONCILE_NMI \ - li r10,IRQS_ALL_DISABLED; \ - stb r10,PACAIRQSOFTMASK(r13); \ - lbz r10,PACAIRQHAPPENED(r13); \ - std r10,_DAR(r1) - EXC_COMMON_BEGIN(system_reset_common) /* * Increment paca->in_nmi then enable MSR_RI. SLB or MCE will be able @@ -195,8 +180,22 @@ EXC_COMMON_BEGIN(system_reset_common) mr r10,r1 ld r1,PACA_NMI_EMERG_SP(r13) subi r1,r1,INT_FRAME_SIZE - EXCEPTION_COMMON_NORET_STACK(PACA_EXNMI, 0x100, system_reset, - ADD_NVGPRS;ADD_RECONCILE_NMI) + EXCEPTION_COMMON_STACK(PACA_EXNMI, 0x100) + bl save_nvgprs + /* + * Set IRQS_ALL_DISABLED unconditionally so arch_irqs_disabled does + * the right thing. We do not want to reconcile because that goes + * through irq tracing which we don't want in NMI. + * + * Save PACAIRQHAPPENED because some code will do a hard disable + * (e.g., xmon). So we want to restore this back to where it was + * when we return. DAR is unused in the stack, so save it there. + */ + li r10,IRQS_ALL_DISABLED + stb r10,PACAIRQSOFTMASK(r13) + lbz r10,PACAIRQHAPPENED(r13) + std r10,_DAR(r1) + addi r3,r1,STACK_FRAME_OVERHEAD bl system_reset_exception @@ -1172,8 +1171,11 @@ hmi_exception_after_realmode: b tramp_real_hmi_exception EXC_COMMON_BEGIN(hmi_exception_common) -EXCEPTION_COMMON(PACA_EXGEN, 0xe60, hmi_exception_common, - FINISH_NAP;ADD_NVGPRS;ADD_RECONCILE;RUNLATCH_ON) + EXCEPTION_COMMON(PACA_EXGEN, 0xe60) + FINISH_NAP + bl save_nvgprs + RECONCILE_IRQ_STATE(r10, r11) + RUNLATCH_ON addi r3,r1,STACK_FRAME_OVERHEAD bl handle_hmi_exception b ret_from_except @@ -1471,8 +1473,9 @@ EXC_COMMON_BEGIN(soft_nmi_common) mr r10,r1 ld r1,PACAEMERGSP(r13) subi r1,r1,INT_FRAME_SIZE - EXCEPTION_COMMON_NORET_STACK(PACA_EXGEN, 0x900, system_reset, - ADD_NVGPRS;ADD_RECONCILE) + EXCEPTION_COMMON_STACK(PACA_EXGEN, 0x900) + bl save_nvgprs + RECONCILE_IRQ_STATE(r10, r11) addi r3,r1,STACK_FRAME_OVERHEAD bl soft_nmi_interrupt b ret_from_except