Re: [Xen-devel] Xen 4.1: x86/ucode: fix for AMD Fam15 CPUs

[Wei Huang <wei.huang2@xxxxxxx>]

On 01/04/2012 10:50 AM, Florian Manschwetus wrote:

Am 04.01.2012 16:28, schrieb Christoph Egger:

x86/ucode: fix for AMD Fam15 CPUs

Remove hardcoded maximum size a microcode patch can have. This is
dynamic now.

The microcode patch for family15h can be larger than 2048 bytes and
gets silently truncated.

Signed-off-by: Christoph Egger <Christoph.Egger@xxxxxxx>
Backport from xen-unstable changeset 24411:ca5f588bd203 to Xen 4.1

Could this fix my xen boot problem on athlon x2 (fam 15 according to
cpuinfo)

See xen-devel post:
[Xen-devel] [Xen-users] Problem booting xen 4.1.2 on Athlon 64 X2
from 22.12.2011 ff

Probably not. cpuinfo reports family in decimal. So your Athlon is Family 0xF; but Christoph's patch is for Family 0x15. For a quick verification, you can rename your AMD ucode (in /lib/firmware/amd-ucode) to prevent it from being loaded.

Regards,
Florian

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