Messages in this thread | | | Date | Sat, 9 Jan 2010 13:13:39 -0800 | Subject | Re: [PATCH] Make Intel 8-way Xeons boot again | From | Yinghai Lu <> |
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On Sat, Jan 9, 2010 at 2:10 AM, Ananth N Mavinakayanahalli <ananth@in.ibm.com> wrote: > On an 8-way system with Intel Xeon X7350 CPUs, booting 2.6.32 or newer > kernels fails at: > > ... > CPU0: Intel(R) Xeon(R) CPU X7350 @ 2.93GHz stepping 0b > Booting Node 0, Processors #1 #2 #3 #4 #5 #6 #7 Ok. > Brought up 8 CPUs > Total of 8 processors activated (46906.05 BogoMIPS). > > Git bisect showed 2fbd07a5f as the offending commit. > > With the patch below, I am able to boot the latest Linus' git tree on > the machine. If this patch is correct, it needs to get into the stable > tree too. > > Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com> > --- > Index: linux-2.6/arch/x86/kernel/apic/probe_64.c > =================================================================== > --- linux-2.6.orig/arch/x86/kernel/apic/probe_64.c 2010-01-09 14:54:29.000000000 +0530 > +++ linux-2.6/arch/x86/kernel/apic/probe_64.c 2010-01-09 14:57:53.000000000 +0530 > @@ -70,7 +70,7 @@ > if (apic == &apic_flat) { > switch (boot_cpu_data.x86_vendor) { > case X86_VENDOR_INTEL: > - if (num_processors > 8) > + if (num_processors >= 8) > apic = &apic_physflat; > break; > case X86_VENDOR_AMD:
can you send out whole bootlog with apic=debug?
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