From: catalin.marinas@arm.com (Catalin Marinas)
To: linux-arm-kernel@lists.infradead.org
Subject: BUG: commit "ARM: Remove __ARCH_WANT_INTERRUPTS_ON_CTXSW on pre-ARMv6 CPUs" breaks armv5 with CONFIG_PREEMPT
Date: Wed, 17 Jul 2013 20:41:21 +0100 [thread overview]
Message-ID: <20130717194121.GF16496@MacBook-Pro.local> (raw)
In-Reply-To: <20130717085139.GJ24642@n2100.arm.linux.org.uk>
On Wed, Jul 17, 2013 at 09:51:39AM +0100, Russell King - ARM Linux wrote:
> On Wed, Jul 17, 2013 at 10:41:19AM +0200, Marc Kleine-Budde wrote:
> > What happend to that patch? I cannot find it in v3.10.x nor in linus/master.
>
> Catalin sent it to me, and I didn't apply it because it's still racy.
>
> We have stateful context switches (due to cache clearing) and this does
> nothing to solve the problem there. If we get preempted during the
> cache clearing, things will still go wrong.
>
> See:
>
> http://www.arm.linux.org.uk/developer/patches/viewpatch.php?id=7771/1
>
> I've no idea what's happening about this. It looks to me like nothing
> happened after Catalin's last comment there.
Too many other things to do. It's on my list for this week or early next
week.
--
Catalin
prev parent reply other threads:[~2013-07-17 19:41 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-20 8:43 BUG: commit "ARM: Remove __ARCH_WANT_INTERRUPTS_ON_CTXSW on pre-ARMv6 CPUs" breaks armv5 with CONFIG_PREEMPT Marc Kleine-Budde
2013-06-20 9:25 ` Will Deacon
2013-06-20 9:51 ` Marc Kleine-Budde
2013-06-20 9:57 ` Catalin Marinas
2013-06-20 10:08 ` Marc Kleine-Budde
2013-06-20 10:14 ` Marc Kleine-Budde
2013-06-20 10:28 ` Catalin Marinas
2013-06-20 11:12 ` Catalin Marinas
2013-06-20 11:35 ` Marc Kleine-Budde
2013-06-20 11:39 ` Marc Kleine-Budde
2013-06-20 11:47 ` Marc Kleine-Budde
2013-06-20 12:48 ` Marc Kleine-Budde
2013-06-20 13:01 ` Catalin Marinas
2013-06-20 13:05 ` Marc Kleine-Budde
2013-06-21 10:28 ` Marc Kleine-Budde
2013-06-21 13:52 ` Catalin Marinas
2013-07-17 8:41 ` Marc Kleine-Budde
2013-07-17 8:51 ` Russell King - ARM Linux
2013-07-17 11:48 ` Marc Kleine-Budde
2013-07-17 19:41 ` Catalin Marinas [this message]
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