diff options
| author | LEROY Christophe <christophe.leroy@c-s.fr> | 2014-09-19 10:36:06 +0200 |
|---|---|---|
| committer | Scott Wood <scottwood@freescale.com> | 2014-11-07 18:10:38 -0600 |
| commit | 7439b37e7579543226cb30eeefdf989bed391997 (patch) | |
| tree | 8f0bec45880fb6526100c2026b93efcbab86697b /arch/powerpc/kernel/head_8xx.S | |
| parent | 0df1f2487d2f0d04703f142813d53615d62a1da4 (diff) | |
| download | linux-7439b37e7579543226cb30eeefdf989bed391997.tar.gz linux-7439b37e7579543226cb30eeefdf989bed391997.tar.xz | |
powerpc/8xx: exception InstructionAccess does not exist on MPC8xx
Exception InstructionAccess does not exist on MPC8xx. No need to branch there from somewhere else.
Handling can be done directly in InstructionTLBError Exception.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Scott Wood <scottwood@freescale.com>
Diffstat (limited to 'arch/powerpc/kernel/head_8xx.S')
| -rw-r--r-- | arch/powerpc/kernel/head_8xx.S | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/arch/powerpc/kernel/head_8xx.S b/arch/powerpc/kernel/head_8xx.S index fafff8dbd5d9..d30f703790f4 100644 --- a/arch/powerpc/kernel/head_8xx.S +++ b/arch/powerpc/kernel/head_8xx.S @@ -234,15 +234,10 @@ DataAccess: EXC_XFER_LITE(0x300, handle_page_fault) /* Instruction access exception. - * This is "never generated" by the MPC8xx. We jump to it for other - * translation errors. + * This is "never generated" by the MPC8xx. */ . = 0x400 InstructionAccess: - EXCEPTION_PROLOG - mr r4,r12 - mr r5,r9 - EXC_XFER_LITE(0x400, handle_page_fault) /* External interrupt */ EXCEPTION(0x500, HardwareInterrupt, do_IRQ, EXC_XFER_LITE) @@ -382,7 +377,7 @@ InstructionTLBMiss: #endif mfspr r10, SPRN_SPRG_SCRATCH2 EXCEPTION_EPILOG_0 - b InstructionAccess + b InstructionTLBError . = 0x1200 DataStoreTLBMiss: @@ -477,7 +472,11 @@ DataStoreTLBMiss: */ . = 0x1300 InstructionTLBError: - b InstructionAccess + EXCEPTION_PROLOG + mr r4,r12 + mr r5,r9 + /* 0x400 is InstructionAccess exception, needed by bad_page_fault() */ + EXC_XFER_LITE(0x400, handle_page_fault) /* This is the data TLB error on the MPC8xx. This could be due to * many reasons, including a dirty update to a pte. We bail out to |