From: Leon Yu <"Leon Yu"@ccca.nctu.edu.tw>
To: linux-kernel@vger.kernel.org
Subject: Re: [SMP BUG?] the return value of is_smp() is bug?
Date: Tue, 2 Sep 2014 04:40:44 +0000 (UTC) [thread overview]
Message-ID: <lu3hoc$lrl$1@ger.gmane.org> (raw)
In-Reply-To: 1409570133-2766-1-git-send-email-long.wanglong@huawei.com
On 2014-09-01, Wang Long <long.wanglong@huawei.com> wrote:
>
> Hi,all
>
> In kernel 3.17-rc2, when i set CONFIG_HAVE_SMP = y and CONFIG_SMP_ON_UP = y
> in .config file. the secondary core can not boot.
>
> when i set CONFIG_HAVE_SMP = y and CONFIG_SMP_ON_UP = n in .config file,
> the secondary core can boot.
>
> But this does not happen in kernel 3.10 lts kernel, Whether the
> CONFIG_SMP_ON_UP is set yes or no ,the secondary core can boot.
>
> Does the meaning of CONFIG_SMP_ON_UP changed or this is a bug in kernel3.17-rc2 ?
Update qemu to at least 2.0.
qemu of older version fails to smp-boot Linux 3.12+ with CONFIG_SMP_ON_UP
enabled.
-Leon
next prev parent reply other threads:[~2014-09-02 4:45 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-01 11:15 [SMP BUG?] the return value of is_smp() is bug? Wang Long
2014-09-02 4:40 ` Leon Yu [this message]
-- strict thread matches above, loose matches on Subject: below --
2014-09-01 11:35 Wang Long
2014-09-01 8:49 ` Arnd Bergmann
2014-09-01 10:19 ` Russell King - ARM Linux
2014-09-04 1:01 ` long.wanglong
2014-09-01 5:49 Wang Long
2014-09-01 10:00 ` long.wanglong
2014-09-01 10:26 ` Arnd Bergmann
2014-09-04 1:13 ` long.wanglong
2014-09-04 8:33 ` Peter Maydell
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