linux-kernel - Re: [PATCH 3/6] x86: clean up _TIF_SYSCALL_EMU handling using ptrace_syscall

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Date:   Fri, 15 Mar 2019 05:48:30 +0000
From:   "Haibo Xu (Arm Technology China)" <Haibo.Xu@....com>
To:     Sudeep Holla <Sudeep.Holla@....com>
CC:     Andy Lutomirski <luto@...nel.org>,
        "x86@...nel.org" <x86@...nel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
        Catalin Marinas <Catalin.Marinas@....com>,
        Will Deacon <Will.Deacon@....com>,
        Oleg Nesterov <oleg@...hat.com>,
        Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        Richard Weinberger <richard@....at>,
        "jdike@...toit.com" <jdike@...toit.com>,
        Steve Capper <Steve.Capper@....com>,
        "Bin Lu (Arm Technology China)" <Bin.Lu@....com>,
        Borislav Petkov <bp@...en8.de>
Subject: Re: [PATCH 3/6] x86: clean up _TIF_SYSCALL_EMU handling using
 ptrace_syscall_enter hook

On 2019/3/14 18:51, Sudeep Holla wrote:
> On Wed, Mar 13, 2019 at 01:03:18AM +0000, Haibo Xu (Arm Technology China) wrote:
> [...]
>
>> Since ptrace() system call do have so many request type, I'm not sure
>> whether the test cases have covered all of that. But here we'd better make
>> sure the PTRACE_SYSEMU and PTRACE_SYSEMU_SINGLESTEP requests are work
>> correctly. May be you can verify them with tests from Bin Lu(bin.lu@....com).
>
> Sure happy to try them. Can you point me to them ?
> I did end up writing few more tests.
>
> --
> Regards,
> Sudeep
>

You can get them from Steve Capper. BTW, I also have a program to verify the
PTRACE_SYSEMU function, and will send to you in a separate email loop.

Regards,
Haibo
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