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Re: [PATCH] mips/o32: fix internal_syscall5/6/7
On Wed, 16 Aug 2017, Aurelien Jarno wrote:
> > Do you know which is the kernel version which this was not really required?
> > I actually tested on a 3.2 on qemu (as it is the minimum one supported
> > currently).
> According to https://www.linux-mips.org/wiki/Syscall it's required up to
> kernel 2.6.35.
Well, there is this very comment in the source file concerned:
The convention was relaxed in Linux with a change applied to the kernel
GIT repository as commit 96187fb0bc30cd7919759d371d810e928048249d, that
first appeared in the 2.6.36 release. Since then the kernel has had
code that reloads $v0 upon syscall restart and resumes right at the
SYSCALL instruction, so no special arrangement is needed anymore.
(which is "MIPS: Sanitize restart logics", dated Sep 28, 2010).