linux-kernel - Re: [PATCH v2 2/6] ptrace: introduce ptrace_syscall_enter to consolidate PTRACE

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Message-ID: <20190318145719.GB18196@e107155-lin>
Date:   Mon, 18 Mar 2019 14:57:19 +0000
From:   Sudeep Holla <sudeep.holla@....com>
To:     "Dmitry V. Levin" <ldv@...linux.org>
Cc:     x86@...nel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.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,
        Steve Capper <Steve.Capper@....com>,
        Haibo Xu <haibo.xu@....com>, Bin Lu <bin.lu@....com>,
        Andy Lutomirski <luto@...nel.org>
Subject: Re: [PATCH v2 2/6] ptrace: introduce ptrace_syscall_enter to
 consolidate PTRACE_SYSEMU handling

On Mon, Mar 18, 2019 at 05:41:15PM +0300, Dmitry V. Levin wrote:
> On Mon, Mar 18, 2019 at 10:49:21AM +0000, Sudeep Holla wrote:
> > Currently each architecture handles PTRACE_SYSEMU in very similar way.
> > It's completely arch independent and can be handled in the code helping
> > to consolidate PTRACE_SYSEMU handling.
> > 
> > Let's introduce a hook 'ptrace_syscall_enter' that arch specific syscall
> > entry code can call.
> 
> Sorry if I'm late for the party, but the new name looks confusing.
> If all it does is related to TIF_SYSCALL_EMU, why does it have a generic
> name 'ptrace_syscall_enter' without any hint of being specific to
> TIF_SYSCALL_EMU?
> 

Not at all late. Infact Haibo Xu pointed that out, I updated but somehow
missed to commit and lost those changes. I will rename as
ptrace_sysemu_syscall_enter

--
Regards,
Sudeep