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Re: [PATCHv3] x86/mm: set x32 syscall bit in SET_PERSONALITY()

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  Re: [PATCHv3] x86/mm: set x32 syscall bit in SET_PERSONALITY() hpa@zytor.com - 2017-03-21 23:30 +0100
    Re: [PATCHv3] x86/mm: set x32 syscall bit in SET_PERSONALITY() Thomas Gleixner <tglx@linutronix.de> - 2017-03-21 23:40 +0100

#1606026 — Re: [PATCHv3] x86/mm: set x32 syscall bit in SET_PERSONALITY()

On March 21, 2017 3:21:13 PM PDT, Thomas Gleixner <tglx@linutronix.de> wrote:
>On Tue, 21 Mar 2017, Dmitry Safonov wrote:
>> v3:
>> - clear x32 syscall flag during x32 -> x86-64 exec() (thanks, HPA).
>
>For correctness sake, this wants to be cleared in the IA32 path as
>well. It's not causing any harm, but ....
>
>I'll amend the patch.
>
>Thanks,
>
>	tglx

Since the i386 syscall namespace is totally separate (and different), should we simply change the system call number to the appropriate sys_execve number?
-- 
Sent from my Android device with K-9 Mail. Please excuse my brevity.

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#1606040

On Tue, 21 Mar 2017, hpa@zytor.com wrote:

> On March 21, 2017 3:21:13 PM PDT, Thomas Gleixner <tglx@linutronix.de> wrote:
> >On Tue, 21 Mar 2017, Dmitry Safonov wrote:
> >> v3:
> >> - clear x32 syscall flag during x32 -> x86-64 exec() (thanks, HPA).
> >
> >For correctness sake, this wants to be cleared in the IA32 path as
> >well. It's not causing any harm, but ....
> >
> >I'll amend the patch.
> >
> >Thanks,
> >
> >	tglx
>
> Since the i386 syscall namespace is totally separate (and different),
> should we simply change the system call number to the appropriate
> sys_execve number?

That should work as well and would be more intuitive.

Thanks,

	tglx

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