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linux/arch/arc/kernel
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Vineet Gupta bb12433bf5 ARC: unbork 5.11 bootup: fix snafu in _TIF_NOTIFY_SIGNAL handling 
Linux 5.11.rcX was failing to boot on ARC HSDK board. Turns out we have
a couple of issues, this being the first one, and I'm to blame as I
didn't pay attention during review.

TIF_NOTIFY_SIGNAL support requires checking multiple TIF_* bits in
kernel return code path. Old code only needed to check a single bit so
BBIT0 <TIF_SIGPENDING> worked. New code needs to check multiple bits so
AND <bit-mask> instruction. So needs to use bit mask variant _TIF_SIGPENDING

Cc: Jens Axboe <axboe@kernel.dk>
Fixes: 53855e1258 ("arc: add support for TIF_NOTIFY_SIGNAL")
Link: https://github.com/foss-for-synopsys-dwc-arc-processors/linux/issues/34
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2021-01-07 14:04:42 -08:00
..
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
arc_hostlink.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
arcksyms.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
asm-offsets.c ARC: add support for DSP-enabled userspace applications 2020-03-16 10:30:49 -07:00
ctx_sw_asm.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
ctx_sw.c ARC: [plat-eznps]: Drop support for EZChip NPS platform 2020-10-05 21:02:29 -07:00
devtree.c ARC: [plat-eznps]: Drop support for EZChip NPS platform 2020-10-05 21:02:29 -07:00
disasm.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
entry-arcv2.S ARCv2: entry: simplify return to Delay Slot via interrupt 2019-07-08 09:24:45 +01:00
entry-compact.S ARC: entry: EV_Trap expects r10 (vs. r9) to have exception cause 2019-07-08 09:24:44 +01:00
entry.S ARC: unbork 5.11 bootup: fix snafu in _TIF_NOTIFY_SIGNAL handling 2021-01-07 14:04:42 -08:00
fpu.c ARCv2: fpu: preserve userspace fpu state 2020-01-17 16:53:44 -08:00
head.S ARC: [plat-hsdk] Remap CCMs super early in asm boot trampoline 2020-11-02 11:45:09 -08:00
intc-arcv2.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
intc-compact.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
irq.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
jump_label.c ARC: ARCv2: jump label: implement jump label patching 2019-11-08 16:14:32 -08:00
kgdb.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
kprobes.c arc: kprobes: Use generic kretprobe trampoline handler 2020-09-08 11:52:32 +02:00
Makefile arc: ptrace: hard-code "arc" instead of UTS_MACHINE 2020-04-12 22:27:09 -07:00
mcip.c ARCv2: IDU-intc: Add support for edge-triggered interrupts 2019-08-26 22:34:59 +05:30
module.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
perf_event.c ARC: perf: redo the pct irq missing in device-tree handling 2020-10-22 10:57:58 -07:00
process.c ARC: [plat-eznps]: Drop support for EZChip NPS platform 2020-10-05 21:02:29 -07:00
ptrace.c arc: switch to ->regset_get() 2020-07-27 14:31:09 -04:00
reset.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
setup.c ARCv2: boot log: detect newer/upconing HS3x/HS4x releases 2020-06-16 12:56:37 -07:00
signal.c arc: add support for TIF_NOTIFY_SIGNAL 2020-11-09 08:16:55 -07:00
smp.c ARC: SMP: fix typo and use "come up" instead of "comeup" 2020-10-05 21:02:29 -07:00
stacktrace.c ARC: stack unwinding: reorganize how initial register state setup 2020-11-17 20:12:01 -08:00
sys.c ARC: wireup clone3 syscall 2020-01-15 16:08:12 -08:00
traps.c Merge branch 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2019-07-08 21:48:15 -07:00
troubleshoot.c ARC: show_regs: fix r12 printing and simplify 2020-08-27 13:11:37 -07:00
unaligned.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
unwind.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
vmlinux.lds.S vmlinux.lds.h: Split ELF_DETAILS from STABS_DEBUG 2020-09-01 09:50:35 +02:00