Jordan Crouse wrote: > Okay - I've been exploring a little bit more. I talked to the TinyBIOS > developer, and he verified that TinyBIOS shouldn't use any MFGPT timers. > He also told me that the mysterious "MFGPT workaround" was in fact the > magic MFGPT erasing MSR that was in the old kernel driver. > > So with the "MFGPT workaround" turned off, TinyBIOS should be acting like > the OLPC firmware with regards to timers, yet it is not. So that is > curious. I think I might have identified a race condition in the code, > but I'm not 100% sure thats the same problem that the ALIX platform is > seeing. > > Anrd and others - will you please try the attached patch on your platform > with the "MFGPT workaround" turned off and mfgpts enabled, and send out > the dmesg?
Of course, tinyBios version v0.99, "MFGPT workaround" turned off, CONFIG_GEODE_MFGPT_TIMER=n: [ 67.369697] NET: Registered protocol family 16 [ 67.383059] geode-mfgpt: IRQ MSR=0:0 [ 67.394058] geode-mfgpt: NMI MSR=0:0 [ 67.405049] geode-mfgpt: Unrestricted sources=0 [ 67.418909] geode: 8 MFGPT timers available. [ 67.433211] PCI: PCI BIOS revision 2.10 entry at 0xfcd03, last bus=0 same with CONFIG_GEODE_MFGPT_TIMER=y (sorry, without move printk patch): [ 22.289349] NET: Registered protocol family 16 [ 22.302716] geode-mfgpt: IRQ MSR=0:0 [ 22.313716] geode-mfgpt: NMI MSR=0:0 [ 22.324704] geode-mfgpt: Unrestricted sources=0 [ 22.338566] geode-mfgpt: Registered timer 0 [ 22.351393] mfgpt-timer: registering the MFGT timer as a clock event. ^^^^ Hangs here > > This will give us some debug information that I can use to ensure that > the interrupts are set up correctly. You can leave the timer tick disabled > if you want. > > Thanks, > Jordan > Arnd -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
