On 11/21/22 02:21, Roger Pau Monne wrote: > When running as a Xen dom0 the number of CPUs available to Linux can > be different from the number of CPUs present on the system, but in > order to properly fetch processor performance related data _PDC must > be executed on all the physical CPUs online on the system. How is the number of CPUs available to Linux different? Is this a result of the ACPI tables that dom0 sees being "wrong"? > The current checks in processor_physically_present() result in some > processor objects not getting their _PDC methods evaluated when Linux > is running as Xen dom0. Fix this by introducing a custom function to > use when running as Xen dom0 in order to check whether a processor > object matches a CPU that's online. What is the end user visible effect of this problem and of the solution?
