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@amd.com> Backport from xen-unstable changeset 24411:ca5f588bd203 to Xen 4.1 -- ---to satisfy European Law for business letters: Advanced Micro Devices GmbH Einsteinring 24, 85689 Dornach b. Muenchen Geschaeftsfuehrer: Alberto Bozzo, Andrew Bowd Sitz: Dornach, Gemeinde Aschheim, Landkreis Muenchen Registergericht Muenchen, HRB Nr. 43632 _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
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@amd.com> > 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 Regards, Florian> > > > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xensource.com > http://lists.xensource.com/xen-devel_______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
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@amd.com> >> 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 ffProbably 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 > >> >> >> _______________________________________________ >> Xen-devel mailing list >> Xen-devel@lists.xensource.com >> http://lists.xensource.com/xen-devel >_______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
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