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tmp_suning_uos_patched/arch/xtensa/kernel
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Max Filippov 19f6dcb1f0 xtensa: fix a7 clobbering in coprocessor context load/store 
commit 839769c35477d4acc2369e45000ca7b0b6af39a7 upstream.

Fast coprocessor exception handler saves a3..a6, but coprocessor context
load/store code uses a4..a7 as temporaries, potentially clobbering a7.
'Potentially' because coprocessor state load/store macros may not use
all four temporary registers (and neither FPU nor HiFi macros do).
Use a3..a6 as intended.

Cc: stable@vger.kernel.org
Fixes: c658eac628 ("[XTENSA] Add support for configurable registers and coprocessors")
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-04-27 13:53:55 +02:00
..
syscalls mm/madvise: introduce process_madvise() syscall: an external memory hinting API 2020-10-18 09:27:10 -07:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
align.S
asm-offsets.c xtensa: add missing exclusive access state management 2020-07-31 14:15:57 -07:00
coprocessor.S xtensa: fix a7 clobbering in coprocessor context load/store 2022-04-27 13:53:55 +02:00
entry.S xtensa: add missing exclusive access state management 2020-07-31 14:15:57 -07:00
head.S xtensa: add XIP kernel support 2019-11-26 11:33:38 -08:00
hw_breakpoint.c xtensa: replace variant/core.h with asm/core.h 2019-05-06 17:48:55 -07:00
irq.c xtensa: call irqchip_init only when CONFIG_USE_OF is selected 2021-10-13 10:04:26 +02:00
jump_label.c xtensa: patch_text: Fixup last cpu should be master 2022-04-27 13:53:55 +02:00
Makefile xtensa: use the generic uncached segment support 2019-11-11 10:52:18 +01:00
mcount.S xtensa: abstract 'entry' and 'retw' in assembly code 2019-07-08 10:04:48 -07:00
module.c
mxhead.S
pci-dma.c dma-mapping: merge <linux/dma-noncoherent.h> into <linux/dma-map-ops.h> 2020-10-06 07:07:06 +02:00
pci.c xtensa: use generic pcibios_set_master and pcibios_enable_device 2019-06-16 23:31:29 -07:00
perf_event.c xtensa: fix xtensa_pmu_setup prototype 2020-07-31 14:09:12 -07:00
platform.c xtensa: drop empty platform_* functions from platforms 2020-01-31 12:17:28 -08:00
process.c arch: rename copy_thread_tls() back to copy_thread() 2020-07-04 23:41:37 +02:00
ptrace.c Merge branch 'work.regset' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-08-07 09:29:25 -07:00
s32c1i_selftest.c
setup.c xtensa: use CONFIG_USE_OF instead of CONFIG_OF 2021-10-13 10:04:26 +02:00
signal.c tracehook: clear TIF_NOTIFY_RESUME in tracehook_notify_resume() 2020-10-17 15:04:36 -06:00
smp.c sched/core: Initialize the idle task with preemption disabled 2021-07-14 16:55:50 +02:00
stacktrace.c xtensa: add support for call0 ABI in userspace 2019-09-01 13:11:57 -07:00
syscall.c xtensa: implement syscall tracepoints 2018-12-17 13:50:25 -08:00
time.c xtensa: replace setup_irq() by request_irq() 2020-03-03 18:40:26 -08:00
traps.c mm: reorder includes after introduction of linux/pgtable.h 2020-06-09 09:39:13 -07:00
vectors.S mm: reorder includes after introduction of linux/pgtable.h 2020-06-09 09:39:13 -07:00
vmlinux.lds.S xtensa: reorganize vectors placement 2020-02-04 21:57:02 -08:00
xtensa_ksyms.c mm: remove unneeded includes of <asm/pgalloc.h> 2020-08-07 11:33:26 -07:00