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 >
