On Fri, 12 Sep 2014, Andy Shevchenko wrote: > On Thu, 2014-09-11 at 23:59 +0200, Thomas Gleixner wrote:
> > > > x86_intel_mid_timer=apbt_only > > w/o patch > > [ 0.000000] Early APIC setup for system timer0 > [ 0.000000] ------------[ cut here ]------------ > [ 0.000000] WARNING: CPU: 0 PID: 0 at > arch/x86/kernel/apic/apic.c:1393 setup_local_APIC+0x20c/0x2d9() > > ...and stuck a bit later Right, because there is no apbt timer in that machine and the commandline tells the kernel to use it and ignore the local apic timer. > > > > or > > > > x86_intel_mid_timer=lapic_and_apbt > > > > > > [ 0.116858] BUG: unable to handle kernel NULL pointer dereference at > > > 0000003a > > > [ 0.123820] IP: [<c1071c0e>] setup_irq+0xf/0x4d > > > ... > > > > > w/o patch > > [ 0.000000] Early APIC setup for system timer0 > [ 0.000000] ------------[ cut here ]------------ > [ 0.000000] WARNING: CPU: 0 PID: 0 at > arch/x86/kernel/apic/apic.c:1393 setup_local_APIC+0x20c/0x2d9() > > ...and boots normally Right, because it uses the local apic timer later on. Thanks for providing the data! I'll queue a removal of this mess. Thanks, tglx -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/