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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

  reply	other threads:[~2015-04-18 23:40 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-04-18 23:23 qemu:arm test failure due to commit 8053871d0f7f (smp: Fix smp_call_function_single_async() locking) 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
2015-04-20 10:46                   ` Geert Uytterhoeven

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