From: Guenter Roeck <linux@roeck-us.net>
To: linux-kernel@vger.kernel.org
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@kernel.org>
Subject: Re: qemu:arm test failure due to commit 8053871d0f7f (smp: Fix smp_call_function_single_async() locking)
Date: Sat, 18 Apr 2015 16:40:50 -0700 [thread overview]
Message-ID: <20150418234050.GA5987@roeck-us.net> (raw)
In-Reply-To: <20150418232325.GA22411@roeck-us.net>
On Sat, Apr 18, 2015 at 04:23:25PM -0700, Guenter Roeck wrote:
> Hi all,
>
> my qemu test for arm:vexpress fails with the latest upstream kernel. It fails
> hard - I don't get any output from the console. Bisect points to commit
> 8053871d0f7f ("smp: Fix smp_call_function_single_async() locking").
> Reverting this commit fixes the problem.
>
Additional observation: The system boots if I add "-smp cpus=4" to the qemu
options. It does still hang, however, with "-smp cpus=2" and "-smp cpus=3".
Guenter
next prev parent reply other threads:[~2015-04-18 23:40 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-18 23:23 Guenter Roeck
2015-04-18 23:40 ` Guenter Roeck [this message]
2015-04-19 0:04 ` Linus Torvalds
2015-04-19 0:36 ` Guenter Roeck
2015-04-19 1:56 ` Guenter Roeck
2015-04-19 3:39 ` Rabin Vincent
2015-04-19 4:03 ` Guenter Roeck
[not found] ` <CA+55aFw4FSja+VBuCYJ7wLXKVRQZ7w6vOUaUJ4B=FXyBmNkrUg@mail.gmail.com>
2015-04-19 8:56 ` Linus Torvalds
2015-04-19 9:31 ` Ingo Molnar
2015-04-19 14:08 ` Guenter Roeck
2015-04-19 18:01 ` Ingo Molnar
2015-04-19 20:34 ` Linus Torvalds
2015-04-20 5:39 ` Ingo Molnar
2015-04-20 12:17 ` Paul E. McKenney
2015-04-20 15:53 ` Linus Torvalds
2015-04-20 15:41 ` Rabin Vincent
2015-04-20 10:46 ` Geert Uytterhoeven
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