Messages in this thread | | | From | Leon Yu <"Leon Yu"@ccca.nctu.edu.tw> | Subject | Re: [SMP BUG?] the return value of is_smp() is bug? | Date | Tue, 2 Sep 2014 04:40:44 +0000 (UTC) |
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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
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