Max Filippov bac4cadeb7 xtensa: fix a7 clobbering in coprocessor context load/store ...

commit 839769c354 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 14:38:59 +02:00

..

syscalls

Merge branch 'akpm' (patches from Andrew)

2021-09-03 10:08:28 -07:00

.gitignore

.gitignore: add SPDX License Identifier

2020-03-25 11:50:48 +01:00

align.S

xtensa: clean up word alignment macros in assembly code

2017-12-10 14:48:53 -08:00

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 14:38:59 +02:00

entry.S

xtensa: add support for TIF_NOTIFY_SIGNAL

2020-11-12 08:45:56 -07:00

head.S

xtensa: Couple of typo fixes

2021-04-04 15:39:04 -07:00

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

2021-09-27 09:46:33 -07:00

jump_label.c

xtensa: patch_text: Fixup last cpu should be master

2022-04-27 14:38:59 +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

xtensa: clean up custom-controlled debug output

2017-12-16 22:37:08 -08:00

mxhead.S

xtensa: drop unused sections and remapped reset handlers

2015-11-03 17:19:39 +03:00

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: fix warning comparing pointer to 0

2021-04-04 15:39:02 -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

sched: Introduce task_is_running()

2021-06-18 11:43:07 +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

xtensa: move S32C1I self-test to a separate file

2016-11-16 15:08:28 -08:00

setup.c

xtensa: use CONFIG_USE_OF instead of CONFIG_OF

2021-09-27 06:08:58 -07:00

signal.c

xtensa: add support for TIF_NOTIFY_SIGNAL

2020-11-12 08:45:56 -07:00

smp.c

sched/core: Initialize the idle task with preemption disabled

2021-05-12 13:01:45 +02:00

stacktrace.c

arch: xtensa: Remove CONFIG_OPROFILE support

2021-01-29 10:05:51 +05:30

syscall.c

xtensa: syscalls: switch to generic syscalltbl.sh

2021-04-04 15:39:03 -07:00

time.c

xtensa: Replace <linux/clk-provider.h> by <linux/of_clk.h>

2020-12-07 14:01:02 -08:00

traps.c

xtensa: add fairness to IRQ handling

2021-08-11 11:36:10 -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

asm-generic: reverse GENERIC_{STRNCPY_FROM,STRNLEN}_USER symbols

2021-07-30 10:30:21 +02:00