On Monday 07 December 2015 15:12:59 Andy Lutomirski wrote:
> Hi all-
>
> Every time I look at is_compat_task, I cringe. That function
> determines whether we're in a compat syscall, not whether we're in a
> compat task. There are probably architectures (arm64?) under which
> these are the same conditions, but they are definitely *not* the same
> thing on x86.
>
> Can we just fix it? I propose the following patch:
>
> $ find -type f |xargs sed -i -e 's/is_compat_task/in_compat_syscall/g'
>
> If there's general agreement, can we do that at the end of the next
> merge window?
>
> I could also send a patch series to add in_compat_syscall, change all
> the users, then delete the old stuff, but that seems overcomplicated
> for something that's literally just renaming a token.
As far as I know, x86 is the special case here, on all other architectures,
this actually checks the task, and it's impossible to call a system call
of the other kind.
Arnd
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