Debian has decided to take Jeremy's microcode patch [0] as an interim measure for their next release. (TL;DR -- Debian is shipping pvops Linux 3.2 and Xen 4.1 in the next release. See http://bugs.debian.org/693053 and https://lists.debian.org/debian-devel/2012/11/msg00141.html for some more background).
However the patch is a bit old and predates the use introduction of separate firmware files for AMD family >= 15h. Looking at the SuSE forward ported classic Xen patches it seems like the following patch is all that is required. But it seems a little too simple to be true and I don't have any such processors to test on. Jan, can you recall if it really is that easy on the kernel side ;-) Ian. [0] http://git.kernel.org/?p=linux/kernel/git/jeremy/xen.git;a=shortlog;h=refs/heads/upstream/microcode commit 109cf37876567ef346c0ecde8b473e7ad1e74e07 Author: Ian Campbell <i...@hellion.org.uk> Date: Mon Nov 26 09:41:02 2012 +0000 microcode_xen: Add support for AMD family >= 15h Signed-off-by: Ian Campbell <i...@hellion.org.uk> diff --git a/arch/x86/kernel/microcode_xen.c b/arch/x86/kernel/microcode_xen.c index 9d2a06b..2b8a78a 100644 --- a/arch/x86/kernel/microcode_xen.c +++ b/arch/x86/kernel/microcode_xen.c @@ -74,7 +74,11 @@ static enum ucode_state xen_request_microcode_fw(int cpu, struct device *device) break; case X86_VENDOR_AMD: - snprintf(name, sizeof(name), "amd-ucode/microcode_amd.bin"); + /* Beginning with family 15h AMD uses family-specific firmware files. */ + if (c->x86 >= 0x15) + snprintf(name, sizeof(name), "amd-ucode/microcode_amd_fam%.2xh.bin", c->x86); + else + snprintf(name, sizeof(name), "amd-ucode/microcode_amd.bin"); break; default: -- Ian Campbell Current Noise: Dew-Scented - Metal Militia Now KEN and BARBIE are PERMANENTLY ADDICTED to MIND-ALTERING DRUGS ... -- To UNSUBSCRIBE, email to debian-kernel-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/1353936077.5830.30.ca...@zakaz.uk.xensource.com
