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Sat, 22 Jun 2019 06:16:21 -0700 (PDT) Received: from bobo.ozlabs.ibm.com ([1.144.136.2]) by smtp.gmail.com with ESMTPSA id n1sm5192471pgv.15.2019.06.22.06.16.19 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Sat, 22 Jun 2019 06:16:21 -0700 (PDT) From: Nicholas Piggin To: linuxppc-dev@lists.ozlabs.org Subject: [PATCH v3 06/25] powerpc/64s/exception: consolidate maskable and non-maskable prologs Date: Sat, 22 Jun 2019 23:15:16 +1000 Message-Id: <20190622131535.20996-7-npiggin@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190622131535.20996-1-npiggin@gmail.com> References: <20190622131535.20996-1-npiggin@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Nicholas Piggin Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Conditionally expand the soft-masking test if a mask is passed in. No generated code change. Signed-off-by: Nicholas Piggin --- arch/powerpc/include/asm/exception-64s.h | 113 +++++++++-------------- arch/powerpc/kernel/exceptions-64s.S | 20 ++-- 2 files changed, 55 insertions(+), 78 deletions(-) diff --git a/arch/powerpc/include/asm/exception-64s.h b/arch/powerpc/include/asm/exception-64s.h index e1b449e2c9ea..74ddcb37156c 100644 --- a/arch/powerpc/include/asm/exception-64s.h +++ b/arch/powerpc/include/asm/exception-64s.h @@ -234,7 +234,7 @@ #define EXCEPTION_RELON_PROLOG(area, label, hsrr, kvm, vec) \ SET_SCRATCH0(r13); /* save r13 */ \ EXCEPTION_PROLOG_0(area); \ - EXCEPTION_PROLOG_1 hsrr, area, kvm, vec ; \ + EXCEPTION_PROLOG_1 hsrr, area, kvm, vec, 0 ; \ EXCEPTION_PROLOG_2_VIRT label, hsrr /* Exception register prefixes */ @@ -305,73 +305,50 @@ END_FTR_SECTION_NESTED(ftr,ftr,943) std r10,area+EX_R10(r13); /* save r10 - r12 */ \ OPT_GET_SPR(r10, SPRN_CFAR, CPU_FTR_CFAR) -#define __EXCEPTION_PROLOG_1_PRE(area) \ - OPT_SAVE_REG_TO_PACA(area+EX_PPR, r9, CPU_FTR_HAS_PPR); \ - OPT_SAVE_REG_TO_PACA(area+EX_CFAR, r10, CPU_FTR_CFAR); \ - INTERRUPT_TO_KERNEL; \ - SAVE_CTR(r10, area); \ +.macro EXCEPTION_PROLOG_1 hsrr, area, kvm, vec, bitmask + OPT_SAVE_REG_TO_PACA(\area\()+EX_PPR, r9, CPU_FTR_HAS_PPR) + OPT_SAVE_REG_TO_PACA(\area\()+EX_CFAR, r10, CPU_FTR_CFAR) + INTERRUPT_TO_KERNEL + SAVE_CTR(r10, \area\()) mfcr r9 - -#define __EXCEPTION_PROLOG_1_POST(area) \ - std r11,area+EX_R11(r13); \ - std r12,area+EX_R12(r13); \ - GET_SCRATCH0(r10); \ - std r10,area+EX_R13(r13) - -/* - * This version of the EXCEPTION_PROLOG_1 will carry - * addition parameter called "bitmask" to support - * checking of the interrupt maskable level. - * Intended to be used in MASKABLE_EXCPETION_* macros. - */ -.macro MASKABLE_EXCEPTION_PROLOG_1 hsrr, area, kvm, vec, bitmask - __EXCEPTION_PROLOG_1_PRE(\area\()) .if \kvm KVMTEST \hsrr \vec .endif - - lbz r10,PACAIRQSOFTMASK(r13) - andi. r10,r10,\bitmask - /* This associates vector numbers with bits in paca->irq_happened */ - .if \vec == 0x500 || \vec == 0xea0 - li r10,PACA_IRQ_EE - .elseif \vec == 0x900 || \vec == 0xea0 - li r10,PACA_IRQ_DEC - .elseif \vec == 0xa00 || \vec == 0xe80 - li r10,PACA_IRQ_DBELL - .elseif \vec == 0xe60 - li r10,PACA_IRQ_HMI - .elseif \vec == 0xf00 - li r10,PACA_IRQ_PMI - .else - .abort "Bad maskable vector" + .if \bitmask + lbz r10,PACAIRQSOFTMASK(r13) + andi. r10,r10,\bitmask + /* Associate vector numbers with bits in paca->irq_happened */ + .if \vec == 0x500 || \vec == 0xea0 + li r10,PACA_IRQ_EE + .elseif \vec == 0x900 || \vec == 0xea0 + li r10,PACA_IRQ_DEC + .elseif \vec == 0xa00 || \vec == 0xe80 + li r10,PACA_IRQ_DBELL + .elseif \vec == 0xe60 + li r10,PACA_IRQ_HMI + .elseif \vec == 0xf00 + li r10,PACA_IRQ_PMI + .else + .abort "Bad maskable vector" + .endif + + .if \hsrr + bne masked_Hinterrupt + .else + bne masked_interrupt + .endif .endif - .if \hsrr - bne masked_Hinterrupt - .else - bne masked_interrupt - .endif - - __EXCEPTION_PROLOG_1_POST(\area\()) -.endm - -/* - * This version of the EXCEPTION_PROLOG_1 is intended - * to be used in STD_EXCEPTION* macros - */ -.macro EXCEPTION_PROLOG_1 hsrr, area, kvm, vec - __EXCEPTION_PROLOG_1_PRE(\area\()) - .if \kvm - KVMTEST \hsrr \vec - .endif - __EXCEPTION_PROLOG_1_POST(\area\()) + std r11,\area\()+EX_R11(r13) + std r12,\area\()+EX_R12(r13) + GET_SCRATCH0(r10) + std r10,\area\()+EX_R13(r13) .endm #define EXCEPTION_PROLOG(area, label, hsrr, kvm, vec) \ SET_SCRATCH0(r13); /* save r13 */ \ EXCEPTION_PROLOG_0(area); \ - EXCEPTION_PROLOG_1 hsrr, area, kvm, vec ; \ + EXCEPTION_PROLOG_1 hsrr, area, kvm, vec, 0 ; \ EXCEPTION_PROLOG_2_REAL label, hsrr, 1 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE @@ -440,7 +417,7 @@ END_FTR_SECTION_NESTED(ftr,ftr,943) /* Do not enable RI */ #define EXCEPTION_PROLOG_NORI(area, label, hsrr, kvm, vec) \ EXCEPTION_PROLOG_0(area); \ - EXCEPTION_PROLOG_1 hsrr, area, kvm, vec ; \ + EXCEPTION_PROLOG_1 hsrr, area, kvm, vec, 0 ; \ EXCEPTION_PROLOG_2_REAL label, hsrr, 0 #ifdef CONFIG_KVM_BOOK3S_64_HANDLER @@ -595,14 +572,14 @@ END_FTR_SECTION_NESTED(ftr,ftr,943) b hdlr #define STD_EXCEPTION_OOL(vec, label) \ - EXCEPTION_PROLOG_1 EXC_STD, PACA_EXGEN, 1, vec ; \ + EXCEPTION_PROLOG_1 EXC_STD, PACA_EXGEN, 1, vec, 0 ; \ EXCEPTION_PROLOG_2_REAL label, EXC_STD, 1 #define STD_EXCEPTION_HV(loc, vec, label) \ EXCEPTION_PROLOG(PACA_EXGEN, label, EXC_HV, 1, vec) #define STD_EXCEPTION_HV_OOL(vec, label) \ - EXCEPTION_PROLOG_1 EXC_HV, PACA_EXGEN, 1, vec ; \ + EXCEPTION_PROLOG_1 EXC_HV, PACA_EXGEN, 1, vec, 0 ; \ EXCEPTION_PROLOG_2_REAL label, EXC_HV, 1 #define STD_RELON_EXCEPTION(loc, vec, label) \ @@ -610,54 +587,54 @@ END_FTR_SECTION_NESTED(ftr,ftr,943) EXCEPTION_RELON_PROLOG(PACA_EXGEN, label, EXC_STD, 0, vec) #define STD_RELON_EXCEPTION_OOL(vec, label) \ - EXCEPTION_PROLOG_1 EXC_STD, PACA_EXGEN, 0, vec ; \ + EXCEPTION_PROLOG_1 EXC_STD, PACA_EXGEN, 0, vec, 0 ; \ EXCEPTION_PROLOG_2_VIRT label, EXC_STD #define STD_RELON_EXCEPTION_HV(loc, vec, label) \ EXCEPTION_RELON_PROLOG(PACA_EXGEN, label, EXC_HV, 1, vec) #define STD_RELON_EXCEPTION_HV_OOL(vec, label) \ - EXCEPTION_PROLOG_1 EXC_HV, PACA_EXGEN, 1, vec; \ + EXCEPTION_PROLOG_1 EXC_HV, PACA_EXGEN, 1, vec, 0 ; \ EXCEPTION_PROLOG_2_VIRT label, EXC_HV #define __MASKABLE_EXCEPTION(vec, label, hsrr, kvm, bitmask) \ SET_SCRATCH0(r13); /* save r13 */ \ EXCEPTION_PROLOG_0(PACA_EXGEN); \ - MASKABLE_EXCEPTION_PROLOG_1 hsrr, PACA_EXGEN, kvm, vec, bitmask ; \ + EXCEPTION_PROLOG_1 hsrr, PACA_EXGEN, kvm, vec, bitmask ; \ EXCEPTION_PROLOG_2_REAL label, hsrr, 1 #define MASKABLE_EXCEPTION(vec, label, bitmask) \ __MASKABLE_EXCEPTION(vec, label, EXC_STD, 1, bitmask) #define MASKABLE_EXCEPTION_OOL(vec, label, bitmask) \ - MASKABLE_EXCEPTION_PROLOG_1 EXC_STD, PACA_EXGEN, 1, vec, bitmask ; \ + EXCEPTION_PROLOG_1 EXC_STD, PACA_EXGEN, 1, vec, bitmask ; \ EXCEPTION_PROLOG_2_REAL label, EXC_STD, 1 #define MASKABLE_EXCEPTION_HV(vec, label, bitmask) \ __MASKABLE_EXCEPTION(vec, label, EXC_HV, 1, bitmask) #define MASKABLE_EXCEPTION_HV_OOL(vec, label, bitmask) \ - MASKABLE_EXCEPTION_PROLOG_1 EXC_HV, PACA_EXGEN, 1, vec, bitmask ; \ + EXCEPTION_PROLOG_1 EXC_HV, PACA_EXGEN, 1, vec, bitmask ; \ EXCEPTION_PROLOG_2_REAL label, EXC_HV, 1 #define __MASKABLE_RELON_EXCEPTION(vec, label, hsrr, kvm, bitmask) \ SET_SCRATCH0(r13); /* save r13 */ \ EXCEPTION_PROLOG_0(PACA_EXGEN); \ - MASKABLE_EXCEPTION_PROLOG_1 hsrr, PACA_EXGEN, kvm, vec, bitmask ; \ + EXCEPTION_PROLOG_1 hsrr, PACA_EXGEN, kvm, vec, bitmask ; \ EXCEPTION_PROLOG_2_VIRT label, hsrr #define MASKABLE_RELON_EXCEPTION(vec, label, bitmask) \ __MASKABLE_RELON_EXCEPTION(vec, label, EXC_STD, 0, bitmask) #define MASKABLE_RELON_EXCEPTION_OOL(vec, label, bitmask) \ - MASKABLE_EXCEPTION_PROLOG_1 EXC_STD, PACA_EXGEN, 0, vec, bitmask ; \ + EXCEPTION_PROLOG_1 EXC_STD, PACA_EXGEN, 0, vec, bitmask ; \ EXCEPTION_PROLOG_2_REAL label, EXC_STD, 1 #define MASKABLE_RELON_EXCEPTION_HV(vec, label, bitmask) \ __MASKABLE_RELON_EXCEPTION(vec, label, EXC_HV, 1, bitmask) #define MASKABLE_RELON_EXCEPTION_HV_OOL(vec, label, bitmask) \ - MASKABLE_EXCEPTION_PROLOG_1 EXC_HV, PACA_EXGEN, 1, vec, bitmask ; \ + EXCEPTION_PROLOG_1 EXC_HV, PACA_EXGEN, 1, vec, bitmask ; \ EXCEPTION_PROLOG_2_VIRT label, EXC_HV /* diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index f44169239e51..fe6242453f62 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -275,7 +275,7 @@ ALT_FTR_SECTION_END_IFSET(CPU_FTR_HVMODE) EXC_REAL_END(machine_check, 0x200, 0x100) EXC_VIRT_NONE(0x4200, 0x100) TRAMP_REAL_BEGIN(machine_check_common_early) - EXCEPTION_PROLOG_1 EXC_STD, PACA_EXMC, 0, 0x200 + EXCEPTION_PROLOG_1 EXC_STD, PACA_EXMC, 0, 0x200, 0 /* * Register contents: * R13 = PACA @@ -360,7 +360,7 @@ BEGIN_FTR_SECTION b machine_check_common_early END_FTR_SECTION_IFCLR(CPU_FTR_HVMODE) machine_check_pSeries_0: - EXCEPTION_PROLOG_1 EXC_STD, PACA_EXMC, 1, 0x200 + EXCEPTION_PROLOG_1 EXC_STD, PACA_EXMC, 1, 0x200, 0 /* * MSR_RI is not enabled, because PACA_EXMC is being used, so a * nested machine check corrupts it. machine_check_common enables @@ -598,7 +598,7 @@ EXCEPTION_PROLOG_0(PACA_EXGEN) EXC_REAL_END(data_access, 0x300, 0x80) TRAMP_REAL_BEGIN(tramp_real_data_access) -EXCEPTION_PROLOG_1 EXC_STD, PACA_EXGEN, 1, 0x300 +EXCEPTION_PROLOG_1 EXC_STD, PACA_EXGEN, 1, 0x300, 0 /* * DAR/DSISR must be read before setting MSR[RI], because * a d-side MCE will clobber those registers so is not @@ -613,7 +613,7 @@ EXCEPTION_PROLOG_2_REAL data_access_common, EXC_STD, 1 EXC_VIRT_BEGIN(data_access, 0x4300, 0x80) SET_SCRATCH0(r13) /* save r13 */ EXCEPTION_PROLOG_0(PACA_EXGEN) -EXCEPTION_PROLOG_1 EXC_STD, PACA_EXGEN, 0, 0x300 +EXCEPTION_PROLOG_1 EXC_STD, PACA_EXGEN, 0, 0x300, 0 mfspr r10,SPRN_DAR mfspr r11,SPRN_DSISR std r10,PACA_EXGEN+EX_DAR(r13) @@ -652,7 +652,7 @@ EXCEPTION_PROLOG_0(PACA_EXSLB) EXC_REAL_END(data_access_slb, 0x380, 0x80) TRAMP_REAL_BEGIN(tramp_real_data_access_slb) -EXCEPTION_PROLOG_1 EXC_STD, PACA_EXSLB, 1, 0x380 +EXCEPTION_PROLOG_1 EXC_STD, PACA_EXSLB, 1, 0x380, 0 mfspr r10,SPRN_DAR std r10,PACA_EXSLB+EX_DAR(r13) EXCEPTION_PROLOG_2_REAL data_access_slb_common, EXC_STD, 1 @@ -660,7 +660,7 @@ EXCEPTION_PROLOG_2_REAL data_access_slb_common, EXC_STD, 1 EXC_VIRT_BEGIN(data_access_slb, 0x4380, 0x80) SET_SCRATCH0(r13) /* save r13 */ EXCEPTION_PROLOG_0(PACA_EXSLB) -EXCEPTION_PROLOG_1 EXC_STD, PACA_EXSLB, 0, 0x380 +EXCEPTION_PROLOG_1 EXC_STD, PACA_EXSLB, 0, 0x380, 0 mfspr r10,SPRN_DAR std r10,PACA_EXSLB+EX_DAR(r13) EXCEPTION_PROLOG_2_VIRT data_access_slb_common, EXC_STD @@ -779,7 +779,7 @@ EXC_COMMON_ASYNC(hardware_interrupt_common, 0x500, do_IRQ) EXC_REAL_BEGIN(alignment, 0x600, 0x100) SET_SCRATCH0(r13) /* save r13 */ EXCEPTION_PROLOG_0(PACA_EXGEN) -EXCEPTION_PROLOG_1 EXC_STD, PACA_EXGEN, 1, 0x600 +EXCEPTION_PROLOG_1 EXC_STD, PACA_EXGEN, 1, 0x600, 0 mfspr r10,SPRN_DAR mfspr r11,SPRN_DSISR std r10,PACA_EXGEN+EX_DAR(r13) @@ -790,7 +790,7 @@ EXC_REAL_END(alignment, 0x600, 0x100) EXC_VIRT_BEGIN(alignment, 0x4600, 0x100) SET_SCRATCH0(r13) /* save r13 */ EXCEPTION_PROLOG_0(PACA_EXGEN) -EXCEPTION_PROLOG_1 EXC_STD, PACA_EXGEN, 0, 0x600 +EXCEPTION_PROLOG_1 EXC_STD, PACA_EXGEN, 0, 0x600, 0 mfspr r10,SPRN_DAR mfspr r11,SPRN_DSISR std r10,PACA_EXGEN+EX_DAR(r13) @@ -1119,7 +1119,7 @@ __TRAMP_REAL_OOL_MASKABLE_HV(hmi_exception, 0xe60, IRQS_DISABLED) EXC_VIRT_NONE(0x4e60, 0x20) TRAMP_KVM_HV(PACA_EXGEN, 0xe60) TRAMP_REAL_BEGIN(hmi_exception_early) - EXCEPTION_PROLOG_1 EXC_HV, PACA_EXGEN, 1, 0xe60 + EXCEPTION_PROLOG_1 EXC_HV, PACA_EXGEN, 1, 0xe60, 0 mr r10,r1 /* Save r1 */ ld r1,PACAEMERGSP(r13) /* Use emergency stack for realmode */ subi r1,r1,INT_FRAME_SIZE /* alloc stack frame */ @@ -1321,7 +1321,7 @@ EXC_VIRT_NONE(0x5400, 0x100) EXC_REAL_BEGIN(denorm_exception_hv, 0x1500, 0x100) mtspr SPRN_SPRG_HSCRATCH0,r13 EXCEPTION_PROLOG_0(PACA_EXGEN) - EXCEPTION_PROLOG_1 EXC_HV, PACA_EXGEN, 0, 0x1500 + EXCEPTION_PROLOG_1 EXC_HV, PACA_EXGEN, 0, 0x1500, 0 #ifdef CONFIG_PPC_DENORMALISATION mfspr r10,SPRN_HSRR1 -- 2.20.1