Andre Przywara
2011-Jan-26 13:48 UTC
[Xen-devel] [PATCH 1/2] xen/pv: blacklist inappropriate new CPUID bits
Hi, there are some new CPUID bits (and leaves) which Dom0 and PV domains should not see to avoid trouble, since we don''t emulate the features. This affects 2.6.37+ kernels on upcoming CPUs. The most prominent one is a topology leaf, which contains information specific to the physical CPU, not the virtual one. To avoid confusion (and possibly crashes) due to a confused Dom0 scheduler simply disable these bits. Version 2 including DomU support. Signed-off-by: Andre Przywara <andre.przywara@amd.com> -- Andre Przywara AMD-Operating System Research Center (OSRC), Dresden, Germany _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel