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| author | Michael Neuling <mikey@neuling.org> | 2013-02-13 16:21:38 +0000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2013-02-15 17:02:22 +1100 |
| commit | d0c0c9a13f682157e8610565b6125a31d24434bc (patch) | |
| tree | 2bda07d0384c3a511aabc395658065a61a83a8b9 /arch/powerpc/kernel/exceptions-64s.S | |
| parent | fb09692e71f13af7298eb603a1975850b1c7a8d8 (diff) | |
| download | lwn-d0c0c9a13f682157e8610565b6125a31d24434bc.tar.gz lwn-d0c0c9a13f682157e8610565b6125a31d24434bc.zip | |
powerpc: Add transactional memory unavaliable execption handler
These should never happen since we always turn on MSR TM when in userspace. We
don't do lazy TM.
Hence if we hit this, we barf and kill the task as something's gone horribly
wrong.
Signed-off-by: Matt Evans <matt@ozlabs.org>
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel/exceptions-64s.S')
| -rw-r--r-- | arch/powerpc/kernel/exceptions-64s.S | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index b9bcf21dbb11..c6b88c1f3ebd 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -336,6 +336,11 @@ vsx_unavailable_pSeries_1: EXCEPTION_PROLOG_0(PACA_EXGEN) b vsx_unavailable_pSeries + . = 0xf60 + SET_SCRATCH0(r13) + EXCEPTION_PROLOG_0(PACA_EXGEN) + b tm_unavailable_pSeries + #ifdef CONFIG_CBE_RAS STD_EXCEPTION_HV(0x1200, 0x1202, cbe_system_error) KVM_HANDLER_SKIP(PACA_EXGEN, EXC_HV, 0x1202) @@ -550,6 +555,8 @@ ALT_FTR_SECTION_END_IFCLR(CPU_FTR_ARCH_206) KVM_HANDLER_PR(PACA_EXGEN, EXC_STD, 0xf20) STD_EXCEPTION_PSERIES_OOL(0xf40, vsx_unavailable) KVM_HANDLER_PR(PACA_EXGEN, EXC_STD, 0xf40) + STD_EXCEPTION_PSERIES_OOL(0xf60, tm_unavailable) + KVM_HANDLER_PR(PACA_EXGEN, EXC_STD, 0xf60) /* * An interrupt came in while soft-disabled. We set paca->irq_happened, then: @@ -852,6 +859,12 @@ vsx_unavailable_relon_pSeries_1: EXCEPTION_PROLOG_0(PACA_EXGEN) b vsx_unavailable_relon_pSeries +tm_unavailable_relon_pSeries_1: + . = 0x4f60 + SET_SCRATCH0(r13) + EXCEPTION_PROLOG_0(PACA_EXGEN) + b tm_unavailable_relon_pSeries + STD_RELON_EXCEPTION_PSERIES(0x5300, 0x1300, instruction_breakpoint) #ifdef CONFIG_PPC_DENORMALISATION . = 0x5500 @@ -1202,6 +1215,15 @@ END_FTR_SECTION_IFSET(CPU_FTR_VSX) b .ret_from_except .align 7 + .globl tm_unavailable_common +tm_unavailable_common: + EXCEPTION_PROLOG_COMMON(0xf60, PACA_EXGEN) + bl .save_nvgprs + addi r3,r1,STACK_FRAME_OVERHEAD + bl .tm_unavailable_exception + b .ret_from_except + + .align 7 .globl __end_handlers __end_handlers: @@ -1220,6 +1242,7 @@ __end_handlers: STD_RELON_EXCEPTION_PSERIES_OOL(0xf00, performance_monitor) STD_RELON_EXCEPTION_PSERIES_OOL(0xf20, altivec_unavailable) STD_RELON_EXCEPTION_PSERIES_OOL(0xf40, vsx_unavailable) + STD_RELON_EXCEPTION_PSERIES_OOL(0xf60, tm_unavailable) #if defined(CONFIG_PPC_PSERIES) || defined(CONFIG_PPC_POWERNV) /* |