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authorAl Viro <viro@zeniv.linux.org.uk>2022-08-08 17:09:45 +0200
committerDinh Nguyen <dinguyen@kernel.org>2022-08-15 18:25:32 +0200
commitfd0c153daad135d0ec1a53c5dbe6936a724d6ae1 (patch)
tree1b0b0486639eba2a2233205735ba09681a8864e0 /arch/mips/loongson2ef/common
parentnios2: restarts apply only to the first sigframe we build... (diff)
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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: 82ed08dd1b0e ("nios2: Exception handling") Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
Diffstat (limited to 'arch/mips/loongson2ef/common')
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