[PATCH 08/14] powerpc/pseries: consolidate exception handler alignment
From: Nicholas Piggin <hidden>
Date: 2016-07-21 06:45:07
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Michael Ellerman, Linus Torvalds
Move exception handler alignment directives into the head-64.h macros, beause they will no longer work in-place after the next patch. This slightly changes functions that have alignments applied and therefore code generation, which is why it was not done initially (see earlier patch). Signed-off-by: Nick Piggin <npiggin@gmail.com> --- arch/powerpc/include/asm/head-64.h | 5 +++++ arch/powerpc/kernel/exceptions-64s.S | 38 +----------------------------------- 2 files changed, 6 insertions(+), 37 deletions(-)
diff --git a/arch/powerpc/include/asm/head-64.h b/arch/powerpc/include/asm/head-64.h
index bc06848..98cd36b 100644
--- a/arch/powerpc/include/asm/head-64.h
+++ b/arch/powerpc/include/asm/head-64.h@@ -1,9 +1,11 @@ #ifndef _ASM_POWERPC_HEAD_64_H #define _ASM_POWERPC_HEAD_64_H +#include <asm/cache.h> #define VECTOR_HANDLER_REAL_BEGIN(name, start, end) \ . = start ; \ + .align 7; \ .global exc_##start##_##name ; \ exc_##start##_##name:
@@ -11,18 +13,21 @@ exc_##start##_##name: #define VECTOR_HANDLER_VIRT_BEGIN(name, start, end) \ . = start ; \ + .align 7; i \ .global exc_##start##_##name ; \ exc_##start##_##name: #define VECTOR_HANDLER_VIRT_END(name, start, end) #define COMMON_HANDLER_BEGIN(name) \ + .align 7; \ .global name; \ name: #define COMMON_HANDLER_END(name) #define TRAMP_HANDLER_BEGIN(name) \ + .align 7; \ .global name ; \ name:
diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S
index 82fb261..db13569 100644
--- a/arch/powerpc/kernel/exceptions-64s.S
+++ b/arch/powerpc/kernel/exceptions-64s.S@@ -407,7 +407,6 @@ VECTOR_HANDLER_REAL_NONE(0x1800, 0x1900) /*** Out of line interrupts support ***/ /* moved from 0x200 */ - .align 7; TRAMP_HANDLER_BEGIN(machine_check_powernv_early) BEGIN_FTR_SECTION EXCEPTION_PROLOG_1(PACA_EXMC, NOTEST, 0x200)
@@ -566,7 +565,6 @@ END_FTR_SECTION_IFSET(CPU_FTR_CFAR) #endif COMMON_HANDLER_END(denorm_assist) - .align 7 /* moved from 0x900 */ __TRAMP_HANDLER_REAL_OOL_MASKABLE(decrementer, 0x900)
@@ -680,7 +678,6 @@ COMMON_HANDLER_END(__replay_interrupt) /* * Vectors for the FWNMI option. Share common code. */ - .align 7 TRAMP_HANDLER_BEGIN(system_reset_fwnmi) SET_SCRATCH0(r13) /* save r13 */ EXCEPTION_PROLOG_PSERIES(PACA_EXGEN, system_reset_common, EXC_STD,
@@ -727,55 +724,37 @@ TRAMP_HANDLER_END(kvmppc_skip_Hinterrupt) /*** Common interrupt handlers ***/ - .align 7; COMMON_HANDLER(system_reset_common, 0x100, system_reset_exception) - .align 7; COMMON_HANDLER_ASYNC(hardware_interrupt_common, 0x500, do_IRQ) - .align 7; COMMON_HANDLER_ASYNC(decrementer_common, 0x900, timer_interrupt) - .align 7; COMMON_HANDLER(hdecrementer_common, 0x980, hdec_interrupt) - .align 7; #ifdef CONFIG_PPC_DOORBELL COMMON_HANDLER_ASYNC(doorbell_super_common, 0xa00, doorbell_exception) #else COMMON_HANDLER_ASYNC(doorbell_super_common, 0xa00, unknown_exception) #endif - .align 7; COMMON_HANDLER(trap_0b_common, 0xb00, unknown_exception) - .align 7; COMMON_HANDLER(single_step_common, 0xd00, single_step_exception) - .align 7; COMMON_HANDLER(trap_0e_common, 0xe00, unknown_exception) - .align 7; COMMON_HANDLER(emulation_assist_common, 0xe40, emulation_assist_interrupt) - .align 7; COMMON_HANDLER_ASYNC(hmi_exception_common, 0xe60, handle_hmi_exception) - .align 7; #ifdef CONFIG_PPC_DOORBELL COMMON_HANDLER_ASYNC(h_doorbell_common, 0xe80, doorbell_exception) #else COMMON_HANDLER_ASYNC(h_doorbell_common, 0xe80, unknown_exception) #endif - .align 7; COMMON_HANDLER_ASYNC(performance_monitor_common, 0xf00, performance_monitor_exception) - .align 7; COMMON_HANDLER(instruction_breakpoint_common, 0x1300, instruction_breakpoint_exception) - .align 7; COMMON_HANDLER_HV(denorm_common, 0x1500, unknown_exception) - .align 7; #ifdef CONFIG_ALTIVEC COMMON_HANDLER(altivec_assist_common, 0x1700, altivec_assist_exception) #else COMMON_HANDLER(altivec_assist_common, 0x1700, unknown_exception) #endif #ifdef CONFIG_CBE_RAS - .align 7; COMMON_HANDLER(cbe_system_error_common, 0x1200, cbe_system_error_exception) - .align 7; COMMON_HANDLER(cbe_maintenance, 0x1600, cbe_maintenance_exception) - .align 7; COMMON_HANDLER(cbe_thermal, 0x1800, cbe_thermal_exception) #endif /* CONFIG_CBE_RAS */
@@ -918,7 +897,6 @@ VECTOR_HANDLER_VIRT(altivec_assist, 0x5700, 0x5800, 0x1700) VECTOR_HANDLER_VIRT_NONE(0x5800, 0x5900) - .align 7 TRAMP_HANDLER_BEGIN(ppc64_runlatch_on_trampoline) b __ppc64_runlatch_on TRAMP_HANDLER_END(ppc64_runlatch_on_trampoline)
@@ -928,7 +906,6 @@ TRAMP_HANDLER_END(ppc64_runlatch_on_trampoline) * SRR0 and SRR1 are saved in r11 and r12, * r9 - r13 are saved in paca->exgen. */ - .align 7 COMMON_HANDLER_BEGIN(data_access_common) mfspr r10,SPRN_DAR std r10,PACA_EXGEN+EX_DAR(r13)
@@ -949,7 +926,6 @@ MMU_FTR_SECTION_ELSE ALT_MMU_FTR_SECTION_END_IFCLR(MMU_FTR_RADIX) COMMON_HANDLER_END(data_access_common) - .align 7 COMMON_HANDLER_BEGIN(h_data_storage_common) mfspr r10,SPRN_HDAR std r10,PACA_EXGEN+EX_DAR(r13)
@@ -963,7 +939,6 @@ COMMON_HANDLER_BEGIN(h_data_storage_common) b ret_from_except COMMON_HANDLER_END(h_data_storage_common) - .align 7 COMMON_HANDLER_BEGIN(instruction_access_common) EXCEPTION_PROLOG_COMMON(0x400, PACA_EXGEN) RECONCILE_IRQ_STATE(r10, r11)
@@ -980,14 +955,12 @@ MMU_FTR_SECTION_ELSE ALT_MMU_FTR_SECTION_END_IFCLR(MMU_FTR_RADIX) COMMON_HANDLER_END(instruction_access_common) - .align 7 COMMON_HANDLER(h_instr_storage_common, 0xe20, unknown_exception) /* * Machine check is different because we use a different * save area: PACA_EXMC instead of PACA_EXGEN. */ - .align 7 COMMON_HANDLER_BEGIN(machine_check_common) mfspr r10,SPRN_DAR std r10,PACA_EXGEN+EX_DAR(r13)
@@ -1006,7 +979,6 @@ COMMON_HANDLER_BEGIN(machine_check_common) b ret_from_except COMMON_HANDLER_END(machine_check_common) - .align 7 COMMON_HANDLER_BEGIN(alignment_common) mfspr r10,SPRN_DAR std r10,PACA_EXGEN+EX_DAR(r13)
@@ -1024,7 +996,6 @@ COMMON_HANDLER_BEGIN(alignment_common) b ret_from_except COMMON_HANDLER_END(alignment_common) - .align 7 COMMON_HANDLER_BEGIN(program_check_common) EXCEPTION_PROLOG_COMMON(0x700, PACA_EXGEN) bl save_nvgprs
@@ -1034,7 +1005,6 @@ COMMON_HANDLER_BEGIN(program_check_common) b ret_from_except COMMON_HANDLER_END(program_check_common) - .align 7 COMMON_HANDLER_BEGIN(fp_unavailable_common) EXCEPTION_PROLOG_COMMON(0x800, PACA_EXGEN) bne 1f /* if from user, just load it up */
@@ -1065,7 +1035,6 @@ END_FTR_SECTION_IFSET(CPU_FTR_TM) #endif COMMON_HANDLER_END(fp_unavailable_common) - .align 7 COMMON_HANDLER_BEGIN(altivec_unavailable_common) EXCEPTION_PROLOG_COMMON(0xf20, PACA_EXGEN) #ifdef CONFIG_ALTIVEC
@@ -1100,7 +1069,6 @@ END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC) b ret_from_except COMMON_HANDLER_END(altivec_unavailable_common) - .align 7 COMMON_HANDLER_BEGIN(vsx_unavailable_common) EXCEPTION_PROLOG_COMMON(0xf40, PACA_EXGEN) #ifdef CONFIG_VSX
@@ -1134,9 +1102,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_VSX) b ret_from_except COMMON_HANDLER_END(vsx_unavailable_common) - .align 7; COMMON_HANDLER(facility_unavailable_common, 0xf60, facility_unavailable_exception) - .align 7; COMMON_HANDLER(h_facility_unavailable_common, 0xf80, facility_unavailable_exception) /* Equivalents to the above handlers for relocation-on interrupt vectors */
@@ -1174,7 +1140,6 @@ fwnmi_data_area: . = 0x8000 #endif /* defined(CONFIG_PPC_PSERIES) || defined(CONFIG_PPC_POWERNV) */ - .align 7; COMMON_HANDLER_BEGIN(hmi_exception_early) EXCEPTION_PROLOG_1(PACA_EXGEN, NOTEST, 0xe60) mr r10,r1 /* Save r1 */
@@ -1261,7 +1226,6 @@ COMMON_HANDLER_END(hmi_exception_early) * Handle machine check early in real mode. We come here with * ME=1, MMU (IR=0 and DR=0) off and using MC emergency stack. */ - .align 7 COMMON_HANDLER_BEGIN(machine_check_handle_early) std r0,GPR0(r1) /* Save r0 */ EXCEPTION_PROLOG_COMMON_3(0x200)
@@ -1458,7 +1422,7 @@ TRAMP_HANDLER_END(power4_fixup_nap) /* * Hash table stuff */ - .align 7 + .align 7 do_hash_page: #ifdef CONFIG_PPC_STD_MMU_64 andis. r0,r4,0xa410 /* weird error? */
--
2.8.1