Hi, the proposed patch will only fix this problem for SoCs with gic_present=1 i have just sent a patch [1] that makes it work on lantiq 34kc socs that have gic_present=0 John [1] http://www.linux-mips.org/archives/linux-mips/2012-02/msg00140.html 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: > http://git.linux-mips.org/?p=linux-mti.git;a=commitdiff;h=5460815027d802697b879644c74f0e8365254020 > > Hi, Raghu > > Do you know why it didn't happen? > > > Deng-Cheng > > On Wed, Feb 22, 2012 at 6:57 PM, Mikael Starvik <mikael.starvik@xxxxxxxx> wrote: >> >> Found it! There are no calls to scheduler_ipi() from the MIPS parts in vanilla 3.2. >> >> /Mikael >> >> -----Original Message----- >> From: Mikael Starvik >> Sent: den 20 februari 2012 10:34 >> To: 'linux-mips@xxxxxxxxxxxxxx' >> 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 >> /Mikael >> > >
