linux/arch/nios2/kernel
Al Viro fd0c153daa nios2: add force_successful_syscall_return()
If we use the ancient SysV syscall ABI, we'd better have tell the
kernel how to claim that a negative return value is a success.
Use ->orig_r2 for that - it's inaccessible via ptrace, so it's
a fair game for changes and it's normally[*] non-negative on return
from syscall.  Set to -1; syscall is not going to be restart-worthy
by definition, so we won't interfere with that use either.

[*] the only exception is rt_sigreturn(), where we skip the entire
messing with r1/r2 anyway.

Fixes: 82ed08dd1b ("nios2: Exception handling")
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
2022-08-15 11:25:32 -05:00
..
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
asm-offsets.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
cpuinfo.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
entry.S nios2: add force_successful_syscall_return() 2022-08-15 11:25:32 -05:00
head.S
insnemu.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
irq.c nios2: Bulk conversion to generic_handle_domain_irq() 2021-08-12 11:39:41 +01:00
kgdb.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
misaligned.c nios2: remove unused statistic counters 2015-09-08 01:32:34 +08:00
module.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
nios2_ksyms.c mm: reorder includes after introduction of linux/pgtable.h 2020-06-09 09:39:13 -07:00
process.c fork: Generalize PF_IO_WORKER handling 2022-05-07 09:01:59 -05:00
prom.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
ptrace.c ptrace: Create ptrace_report_syscall_{entry,exit} in ptrace.h 2022-03-10 13:35:08 -06:00
setup.c NIOS2: setup.c: drop unused variable 'dram_start' 2021-09-27 08:34:54 -05:00
signal.c nios2: restarts apply only to the first sigframe we build... 2022-08-15 11:25:32 -05:00
sys_nios2.c Take mmap lock in cacheflush syscall 2021-02-19 15:01:59 +08:00
syscall_table.c nios2: don't leave NULLs in sys_call_table[] 2022-08-15 11:25:32 -05:00
time.c nios2: Convert to using %pOFn instead of device_node.name 2018-09-28 16:39:27 -05:00
traps.c exit: Add and use make_task_dead. 2021-12-13 12:04:45 -06:00
vmlinux.lds.S vmlinux.lds.h: Split ELF_DETAILS from STABS_DEBUG 2020-09-01 09:50:35 +02:00