lkml.org 
[lkml]   [2009]   [Feb]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: APIC: enable workaround on AMD Fam10h CPUs
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


\
 
 \ /
  Last update: 2009-02-04 13:43    [W:0.060 / U:0.412 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site