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bb12433bf5
linux/arch/arc
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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
..
boot ARC: build: use $(READELF) instead of hard-coded readelf 2020-12-01 17:24:05 -08:00
configs ARC: [plat-eznps]: Drop support for EZChip NPS platform 2020-10-05 21:02:29 -07:00
include arch/arc: add copy_user_page() to <asm/page.h> to fix build error on ARC 2021-01-05 12:59:40 -08:00
kernel ARC: unbork 5.11 bootup: fix snafu in _TIF_NOTIFY_SIGNAL handling 2021-01-07 14:04:42 -08:00
lib treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
mm Merge branch 'akpm' (patches from Andrew) 2020-12-15 12:53:37 -08:00
oprofile treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
plat-axs10x treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
plat-hsdk ARC: [plat-hsdk] Remap CCMs super early in asm boot trampoline 2020-11-02 11:45:09 -08:00
plat-sim ARC: merge HAPS-HS with nSIM-HS configs 2019-10-28 12:12:31 -07:00
plat-tb10x treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333 2019-06-05 17:37:06 +02:00
Kbuild treewide: Add SPDX license identifier - Kbuild 2019-05-30 11:32:33 -07:00
Kconfig asm-generic: cross-architecture timer cleanup 2020-12-16 00:07:17 -08:00
Kconfig.debug Kconfig: consolidate the "Kernel hacking" menu 2018-08-02 08:06:48 +09:00
Makefile ARC: build: move symlink creation to arch/arc/Makefile to avoid race 2020-12-01 17:24:05 -08:00