Messages in this thread | | | Date | Mon, 29 Mar 2004 08:17:56 -0600 | From | Dan Hopper <> | Subject | Re: 2.6.5-rc2-mm4 |
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Andrew Morton <akpm@osdl.org> remarked: > Dan Hopper <ku4nf@austin.rr.com> wrote: > > > > On a Thinkpad T40p, 2.6.5-rc2-mm4 does not boot successfully, > > whereas 2.6.5-rc2 does. All the typical things (ACPI, CPUFREQ, APIC > > & IOAPIC, etc.) are built in. The -mm4 kernel config was derived > > from the working config for 2.6.5-rc2. > > > > I have to pass the nolapic kernel option to disable the local APIC > > in order to successfully boot 2.6.x kernels. It appears that with > > 2.6.5-rc2-mm4, this option is ignored, or perhaps there's a ordering > > issue with when it is checked. With -mm4, a message saying that it > > is enabling the local APIC appears _before_ the "Kernel command > > line: ... nolapic" line appears. > > > > Without the -mm4 patch, the nolapic command line option is parsed > > before it would have tried to reenable the local APIC. With -mm4, > > it is parsed after it tries to renable it. Boom, and then it locks > > on "Calibrating delay loop...". > > > > Any relevant config options I should try with/without to help narrow > > it down? > > Does this fix it?
Yep, it sure does. Thanks!
Dan
> > --- > > 25-akpm/arch/i386/kernel/apic.c | 2 +- > 1 files changed, 1 insertion(+), 1 deletion(-) > > diff -puN arch/i386/kernel/apic.c~early-param-i386-nolapic-fix arch/i386/kernel/apic.c > --- 25/arch/i386/kernel/apic.c~early-param-i386-nolapic-fix 2004-03-28 16:41:06.685335888 -0800 > +++ 25-akpm/arch/i386/kernel/apic.c 2004-03-28 16:42:17.299600888 -0800 > @@ -616,7 +616,7 @@ static int __init lapic_disable(char *st > clear_bit(X86_FEATURE_APIC, boot_cpu_data.x86_capability); > return 0; > } > -__setup("nolapic", lapic_disable); > +__early_param("nolapic", lapic_disable); > > static int __init lapic_enable(char *str) > { > > _ > - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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