Messages in this thread | | | Date | Wed, 04 Feb 2009 07:41:12 -0500 | From | Mark Hounschell <> | Subject | Re: APIC: enable workaround on AMD Fam10h CPUs |
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Borislav Petkov wrote: > From: Borislav Petkov <borislav.petkov@amd.com> > Date: Tue, 3 Feb 2009 16:24:22 +0100 > Subject: [PATCH] APIC: enable workaround on AMD Fam10h CPUs > > Impact: fix to enable APIC for AMD Fam10h on chipsets with a missing/b0rked > ACPI MP table (MADT) > > Booting a 32bit kernel on an AMD Fam10h CPU running on chipsets with > missing/b0rked MP table leads to a hang pretty early in the boot process > due to the APIC not being initialized. Fix that by falling back to the > default APIC base address in 32bit code, as it is done in the 64bit > codepath. > > Signed-off-by: Borislav Petkov <borislav.petkov@amd.com> > --- > arch/x86/kernel/apic.c | 2 +- > 1 files changed, 1 insertions(+), 1 deletions(-) > > diff --git a/arch/x86/kernel/apic.c b/arch/x86/kernel/apic.c > index 4b6df24..115449f 100644 > --- a/arch/x86/kernel/apic.c > +++ b/arch/x86/kernel/apic.c > @@ -1436,7 +1436,7 @@ static int __init detect_init_APIC(void) > switch (boot_cpu_data.x86_vendor) { > case X86_VENDOR_AMD: > if ((boot_cpu_data.x86 == 6 && boot_cpu_data.x86_model > 1) || > - (boot_cpu_data.x86 == 15)) > + (boot_cpu_data.x86 >= 15)) > break; > goto no_apic; > case X86_VENDOR_INTEL:
Hi Borislav,
Could this have anything to do with my Phenom-II problem that you've been so kind to help me with?
Thanks Mark
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