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linux/arch/nios2/include/asm
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Al Viro 8af269e5bd nios2: add force_successful_syscall_return() 
commit fd0c153daa upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2022-08-25 11:40:19 +02:00
..
asm-macros.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 12 2019-05-21 11:28:45 +02:00
asm-offsets.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
cache.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 12 2019-05-21 11:28:45 +02:00
cacheflush.h page cache: use xa_lock 2018-04-11 10:28:39 -07:00
checksum.h unify generic instances of csum_partial_copy_nocheck() 2020-08-20 15:45:14 -04:00
cpuinfo.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
delay.h nios2: Time keeping 2014-12-08 12:56:01 +08:00
elf.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
entry.h nios2: page fault et.al. are *not* restartable syscalls... 2022-08-25 11:40:17 +02:00
io.h nios2: remove __iounmap 2019-11-11 21:18:19 +01:00
irq.h nios2: Do not include linux/irqdomain.h from asm/irq.h 2021-06-10 13:09:15 +01:00
irqflags.h NIOS2: irqflags: rename a redefined register name 2021-10-18 11:22:59 -05:00
Kbuild asm-generic: make more kernel-space headers mandatory 2020-04-02 09:35:25 -07:00
kgdb.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
linkage.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 12 2019-05-21 11:28:45 +02:00
mmu.h nios2: Memory management 2014-12-08 12:55:51 +08:00
mmu_context.h nios2: use asm-generic/mmu_context.h for no-op implementations 2020-10-27 16:02:36 +01:00
page.h mm/vma: define a default value for VM_DATA_DEFAULT_FLAGS 2020-04-10 15:36:21 -07:00
pgalloc.h mm/thp: define default pmd_pgtable() 2021-07-01 11:06:03 -07:00
pgtable-bits.h nios2: drop _PAGE_FILE and pte_file()-related helpers 2015-02-10 14:30:32 -08:00
pgtable.h mm: define default value for FIRST_USER_ADDRESS 2021-07-01 11:06:02 -07:00
processor.h treewide: remove current_text_addr 2018-10-31 08:54:12 -07:00
ptrace.h nios2: add force_successful_syscall_return() 2022-08-25 11:40:19 +02:00
registers.h NIOS2: irqflags: rename a redefined register name 2021-10-18 11:22:59 -05:00
setup.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
shmparam.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201 2019-05-30 11:29:52 -07:00
string.h nios2: Library functions 2014-12-08 12:56:00 +08:00
switch_to.h nios2: Process management 2014-12-08 12:55:53 +08:00
syscall.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201 2019-05-30 11:29:52 -07:00
syscalls.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201 2019-05-30 11:29:52 -07:00
thread_info.h nios32: add support for TIF_NOTIFY_SIGNAL 2020-11-09 08:16:55 -07:00
timex.h nios2: use fallback for random_get_entropy() instead of zero 2022-05-30 09:29:14 +02:00
tlb.h arch/tlb: Clean up simple architectures 2019-04-03 10:32:54 +02:00
tlbflush.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
traps.h nios2: Traps exception handling 2014-12-08 12:55:50 +08:00
uaccess.h uaccess: fix nios2 and microblaze get_user_8() 2022-04-08 14:23:18 +02:00
vmalloc.h mm/vmalloc: Add empty <asm/vmalloc.h> headers and use them from <linux/vmalloc.h> 2019-12-10 10:12:55 +01:00