From: Thomas Gleixner <tglx@linutronix.de>
To: "Shi, Yang" <yang.shi@linaro.org>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
rostedt@goodmis.org, linux-kernel@vger.kernel.org,
linux-rt-users@vger.kernel.org, linaro-kernel@lists.linaro.org
Subject: Re: [PATCH] rt: x86: extend signal send delay to 32 bit
Date: Sat, 12 Dec 2015 15:35:36 +0100 (CET) [thread overview]
Message-ID: <alpine.DEB.2.11.1512121533210.4336@nanos> (raw)
In-Reply-To: <566B275A.5070300@linaro.org>
On Fri, 11 Dec 2015, Shi, Yang wrote:
> On 12/11/2015 10:05 AM, Sebastian Andrzej Siewior wrote:
> > * Yang Shi | 2015-12-10 10:58:51 [-0800]:
> > > Signal send delay is just available for x86-64, x86-32 needs it too.
> >
> > This is new, this was not the case earlier. New means since v4.0-rc1 which
>
> Yes, it is. We didn't find this problem in earlier version kernel (I'd say
> 3.x).
>
> > is when 959274753857 ("x86, traps: Track entry into and exit from IST
> > context") got merged.
> > Since now ist_enter() disables preemption in any case, our hacks to
> > conditional_sti_ist() are pointless and could be removed.
>
> I'm supposed you will revert it and not need a revert patch from me.
Why do you think that reverting it is a good idea? Just because we can
or what?
No, we fix it up on the RT side.
Thanks,
tglx
prev parent reply other threads:[~2015-12-12 14:36 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-10 18:58 Yang Shi
2015-12-11 18:05 ` Sebastian Andrzej Siewior
2015-12-11 19:43 ` Shi, Yang
2015-12-12 14:35 ` Thomas Gleixner [this message]
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