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From: Mark Rutland <mark.rutland@arm.com>
To: Andy Lutomirski <luto@amacapital.net>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	linux-arch <linux-arch@vger.kernel.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	Heiko Carstens <heiko.carstens@de.ibm.com>,
	"H. Peter Anvin" <hpa@zytor.com>,
	Kees Cook <keescook@chromium.org>,
	Andrew Lutomirski <luto@kernel.org>,
	Ingo Molnar <mingo@redhat.com>,
	Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH 2/3] thread_info: factor out restart_block
Date: Mon, 24 Oct 2016 10:45:38 +0100	[thread overview]
Message-ID: <20161024094538.GA15620@leverpostej> (raw)
In-Reply-To: <CALCETrX88DxqBd2D0QB4p39cgZLK6PSTj2hLX_fUh0krDee3iw@mail.gmail.com>

On Wed, Oct 19, 2016 at 04:31:02PM -0700, Andy Lutomirski wrote:
> On Wed, Oct 19, 2016 at 11:28 AM, Mark Rutland <mark.rutland@arm.com> wrote:
> > Since commit f56141e3e2d9aabf ("all arches, signal: move restart_block
> > to struct task_struct"), thread_info and restart_block have been
> > logically distinct, yet struct restart_block is still defined in
> > <linux/thread_info.h>.
> >
> > At least one architecture (erroneously) uses restart_block as part of
> > its thread_info, and thus the definition of restart_block must come
> > before the include of <asm/thread_info>. Subsequent patches in this
> > series need to shuffle the order of includes and definitions in
> > <linux/thread_info.h>, and will make this ordering fragile.
> >
> > This patch moves the definition of restart_block out to its own header.
> > This serves as generic cleanup, logically separating thread_info and
> > restart_block, and also makes it easier to avoid fragility.
> 
> Looks entirely reasonable to me.
> 
> Reviewed-by: Andy Lutomirski <luto@kernel.org>

Thanks, that's much appreciated.

Now that Heiko's patch is in -rc2 I'd like to be able to put these two
patches into a stable branch.

Before I do that, would you also be happy to ack/review patch 3?

Thanks,
Mark.

  reply	other threads:[~2016-10-24  9:46 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-10-19 18:28 [PATCH 0/3] THREAD_INFO_IN_TASK prep work for arm64+s390 Mark Rutland
2016-10-19 18:28 ` [PATCH 1/3] sched/core,x86: make struct thread_info arch specific again Mark Rutland
2016-10-19 18:28   ` Mark Rutland
2016-10-19 23:19   ` Andy Lutomirski
2016-10-20  6:40     ` Ingo Molnar
2016-10-20  9:33       ` Mark Rutland
2016-10-19 18:28 ` [PATCH 2/3] thread_info: factor out restart_block Mark Rutland
2016-10-19 18:28   ` Mark Rutland
2016-10-19 23:31   ` Andy Lutomirski
2016-10-24  9:45     ` Mark Rutland [this message]
2016-10-19 18:28 ` [PATCH 3/3] thread_info: include <current.h> for THREAD_INFO_IN_TASK Mark Rutland
2016-10-19 18:28   ` Mark Rutland
2016-10-20 10:29   ` Heiko Carstens
2016-10-24  9:49     ` Mark Rutland
2016-10-27 23:13   ` Andy Lutomirski
2016-10-27 23:13     ` Andy Lutomirski
2016-10-28 10:48     ` Mark Rutland
2016-10-24 10:12 ` [PATCH 0/3] THREAD_INFO_IN_TASK prep work for arm64+s390 Mark Rutland
2016-10-24 10:12   ` Mark Rutland

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