kernel.git/arch/arc/kernel/traps.c, branch linux-4.9.y

ARC: export "abort" for modules

2019-09-21T05:14:23Z

This is a custom patch (no mainline equivalent) for stable backport only to address 0-Day kernel test infra ARC 4.x.y builds errors. The reason for this custom patch as that it is a single patch, touches only ARC, vs. atleast two 7c2c11b208be09c1, dc8635b78cd8669 which touch atleast 3 other arches (one long removed) and could potentially have a fallout. Reported-by: kbuild test robot CC: stable@vger.kernel.org # 4.4, 4.9 Signed-off-by: Vineet Gupta Signed-off-by: Greg Kroah-Hartman

ARC: handle gcc generated __builtin_trap for older compiler

2019-07-10T07:55:44Z

commit af1be2e21203867cb958aaceed5366e2e24b88e8 upstream. ARC gcc prior to GNU 2018.03 release didn't have a target specific __builtin_trap() implementation, generating default abort() call. Implement the abort() call - emulating what newer gcc does for the same, as suggested by Arnd. Acked-by: Arnd Bergmann Signed-off-by: Vineet Gupta Signed-off-by: Greg Kroah-Hartman

ARC: rename unhandled exception handler

2015-04-13T09:44:57Z

Signed-off-by: Vineet Gupta

ARC: Reduce #ifdef'ery for unaligned access emulation

2013-11-06T05:11:39Z

Emulation not enabled is treated as if the fixup failed, so no need for special #ifdef checks. Signed-off-by: Vineet Gupta

ARC: Remove explicit passing around of ECR

2013-06-26T10:00:50Z

With ECR now part of pt_regs * No need to propagate from lowest asm handlers as arg * No need to save it in tsk->thread.cause_code * Avoid bit chopping to access the bit-fields More code consolidation, cleanup Signed-off-by: Vineet Gupta

ARC: unaligned access emulation error handling consolidation

2013-05-07T08:13:55Z

If CONFIG_ARC_MISALIGN_ACCESS is not enabled, or if the fixup fails, call the same error handler: same signal/si_code to user (SIGBUS) Signed-off-by: Vineet Gupta

ARC: [build] Build failure with !KPROBES

2013-04-09T11:56:50Z

arch/arc/kernel/traps.c no longer compiles without explicitly including asm/kprobes.h Signed-off-by: Christian Ruppert Signed-off-by: Vineet Gupta

ARC: Use headers instead of

2013-04-09T06:51:14Z

Silences the following checkpatch warnings: WARNING: Use #include instead of WARNING: Use #include instead of WARNING: Use #include instead of WARNING: Use #include instead of WARNING: Use #include instead of Signed-off-by: Sachin Kamat Signed-off-by: Vineet Gupta

ARC: kgdb support

2013-02-15T17:46:07Z

Signed-off-by: Mischa Jonker Signed-off-by: Vineet Gupta Cc: Jason Wessel Acked-by: Jason Wessel

ARC: Unaligned access emulation

2013-02-15T17:46:06Z

ARC700 doesn't natively support unaligned access, but can be emulated -Unaligned Access Exception -Disassembly at the Fault address to find the exact insn (long/short) Also per Arnd's comment, we runtime control it using 2 sysctl knobs: * SYSCTL_ARCH_UNALIGN_ALLOW: Runtime enable/disble * SYSCTL_ARCH_UNALIGN_NO_WARN: Warn on each emulation attempt Originally contributed by Tim Yao Signed-off-by: Vineet Gupta Cc: Tim Yao Acked-by: Arnd Bergmann