From: Will Deacon <will.deacon@arm.com>
To: Oleg Nesterov <oleg@redhat.com>
Cc: Sudeep Holla <sudeep.holla@arm.com>, Haibo Xu <haibo.xu@arm.com>,
Steve Capper <Steve.Capper@arm.com>,
Richard Weinberger <richard@nod.at>,
jdike@addtoit.com, x86@kernel.org, linux-kernel@vger.kernel.org,
Bin Lu <bin.lu@arm.com>, Ingo Molnar <mingo@redhat.com>,
Paul Mackerras <paulus@samba.org>,
Michael Ellerman <mpe@ellerman.id.au>,
Andy Lutomirski <luto@kernel.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Thomas Gleixner <tglx@linutronix.de>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v3 1/4] ptrace: move clearing of TIF_SYSCALL_EMU flag to core
Date: Thu, 2 May 2019 17:45:12 +0100 [thread overview]
Message-ID: <20190502164512.GA10635@fuggles.cambridge.arm.com> (raw)
In-Reply-To: <20190502161329.GE7323@redhat.com>
On Thu, May 02, 2019 at 06:13:30PM +0200, Oleg Nesterov wrote:
> On 05/01, Sudeep Holla wrote:
> >
> > On Wed, May 01, 2019 at 06:13:30PM +0200, Oleg Nesterov wrote:
> > > On 04/30, Sudeep Holla wrote:
> > > >
> > > > While the TIF_SYSCALL_EMU is set in ptrace_resume independent of any
> > > > architecture, currently only powerpc and x86 unset the TIF_SYSCALL_EMU
> > > > flag in ptrace_disable which gets called from ptrace_detach.
> > > >
> > > > Let's move the clearing of TIF_SYSCALL_EMU flag to __ptrace_unlink
> > > > which gets executed from ptrace_detach and also keep it along with
> > > > or close to clearing of TIF_SYSCALL_TRACE.
> > > >
> > > > Cc: Oleg Nesterov <oleg@redhat.com>
> > > > Cc: Paul Mackerras <paulus@samba.org>
> > > > Cc: Michael Ellerman <mpe@ellerman.id.au>
> > > > Cc: Thomas Gleixner <tglx@linutronix.de>
> > > > Cc: Ingo Molnar <mingo@redhat.com>
> > > > Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
> > >
> > > Acked-by: Oleg Nesterov <oleg@redhat.com>
> > >
> >
> > Since 1/4 and 2/4 are completely independent of arm64 changes in 3&4/4,
> > I prefer you take these via your tree.
>
> Sorry Sudeep, I can't do this, I need to reanimate my account on kernel.org.
Ok, if you're happy for us to take them via arm64 with your ack, then we can
do that as well. Just don't want to step on anybody's toes!
Will
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next prev parent reply other threads:[~2019-05-02 16:45 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-30 17:05 [PATCH v3 0/4] ptrace: cleanup PTRACE_SYSEMU handling and add support for arm64 Sudeep Holla
2019-04-30 17:05 ` [PATCH v3 1/4] ptrace: move clearing of TIF_SYSCALL_EMU flag to core Sudeep Holla
2019-05-01 16:13 ` Oleg Nesterov
2019-05-01 16:17 ` Sudeep Holla
2019-05-02 16:13 ` Oleg Nesterov
2019-05-02 16:45 ` Will Deacon [this message]
2019-05-03 14:14 ` Oleg Nesterov
2019-04-30 17:05 ` [PATCH v3 2/4] x86: simplify _TIF_SYSCALL_EMU handling Sudeep Holla
2019-05-01 16:12 ` Oleg Nesterov
2019-04-30 17:05 ` [PATCH v3 3/4] arm64: add PTRACE_SYSEMU{, SINGLESTEP} definations to uapi headers Sudeep Holla
2019-04-30 17:05 ` [PATCH v3 4/4] arm64: ptrace: add support for syscall emulation Sudeep Holla
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