Messages in this thread | | | Subject | Re: BIOS bug, APIC version if 0 for CPU#0 | From | Kasper Sandberg <> | Date | Tue, 22 Apr 2008 15:49:05 +0200 |
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On Tue, 2008-04-22 at 06:10 +0000, Justin Mattock wrote: > On Tue, Apr 22, 2008 at 5:21 AM, Jacek Luczak <difrost.kernel@gmail.com> wrote: > > Hi, > > > > > > > Hello; > > > with the latest git on a macbook the system can barely boot without > > > freezing, a work around for me at leat is either disable smp, or once > > > booted turn on glxgears,or compiling the kernel i.g. when using the > > > processors I'm not receiving a freeze, only when everything starts > > > lowering down. in dmesg I'm noticing BIOS bug, APIC version is 0 for > > > CPU#0! fixing up to 0x10. (tell you're hw vendor) could this be the > > > reason for the system freezes?, > > > > I don't think so. On my machine there's no freezes with latest git and: > > ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled) > > BIOS bug, APIC version is 0 for CPU#0! fixing up to 0x10. (tell your hw vendor) > > ACPI: LAPIC (acpi_id[0x01] lapic_id[0x01] enabled) > > BIOS bug, APIC version is 0 for CPU#0! fixing up to 0x10. (tell your hw vendor) > > > > I've got exactly the same messages. > > Are you using a macbook aswell? > > > > > > > > also I didnt have a camera handy on me > > > but the screen spit out = Bug spinlock lockup on CPU#0 > > > swapper/0. c17fa7c0 PID 0, comm: swapper not tainted. > > > > Can you try to write down more of those bug messages? > > Yeah, > > > > > > > > I dont have a problem disabling smp, except when I cat /proc/cpuinfo I > > > don't see anything about my cores. > > > > What exactly you expect to see in /proc/cpuinfp while smp is disabled? > > under smp I see cpu cores. disabling smp I dont see cpu cores, under > cat /proc/cpuinfo.
well.. SMP is kindof support for multiple processors, be it in one socket, or multiple sockets.. without SMP you will only be able to use 1 of your X cores. > > > > > > > > > I know this is a stupid question > > > but will it hurt the system if smp is disabled > > > for the macbook pro ati chipset.? > > > > No it won't. > > > > -Jacek > > > > Cool as long as the system Is o.k. disabling smp. It is.. but with the limitations outlined above. > What about x86: PAT > support is disabled. how do I enable this option? > regards; >
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