Messages in this thread | | | Date | Tue, 29 Nov 2022 09:43:53 -0800 | Subject | Re: [PATCH 1/3] acpi/processor: fix evaluating _PDC method when running as Xen dom0 | From | Dave Hansen <> |
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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?
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