the proposed patch will only fix this problem for SoCs with gic_present=1
i have just sent a patch  that makes it work on lantiq 34kc socs that
On 23/02/12 11:11, Deng-Cheng Zhu wrote:
> I should have contacted the author (Raghu Gandham) of a fix for this
> issue to get it into the mainline. But it slipped out of my mind...
> The patch link is here:
> Hi, Raghu
> Do you know why it didn't happen?
> On Wed, Feb 22, 2012 at 6:57 PM, Mikael Starvik <email@example.com>
>> Found it! There are no calls to scheduler_ipi() from the MIPS parts in
>> vanilla 3.2.
>> -----Original Message-----
>> From: Mikael Starvik
>> Sent: den 20 februari 2012 10:34
>> To: 'firstname.lastname@example.org'
>> Subject: SMP MIPS and Linux 3.2
>> I'm running Linux 3.2 on a MIPS 34K with two VPEs (in MT_SMP configuration).
>> It works fine in UP but with SMP it deadlocks during bootup (both CPUs gets
>> idle). Typically like this:
>> [ 0.090000] CPU revision is: 01019550 (MIPS 34Kc) [ 0.090000] Primary
>> instruction cache 32kB, VIPT, 4-way, linesize 32 bytes.
>> [ 0.090000] Primary data cache 32kB, 4-way, PIPT, no aliases, linesize 32
>> bytes [ 0.170000] Brought up 2 CPUs <No more output>
>> I have tried to enable __ARCH_WANT_INTERRUPTS_ON_CTXSW but that didn't
>> improve anything. Anyone else got this running or have any thoughts about
>> what the problem may be?
>> Best Regards