Roger Pau Monne bfa993b355 acpi/processor: sanitize _OSC/_PDC capabilities for Xen dom0 ... The Processor capability bits notify ACPI of the OS capabilities, and so ACPI can adjust the return of other Processor methods taking the OS capabilities into account. When Linux is running as a Xen dom0, the hypervisor is the entity in charge of processor power management, and hence Xen needs to make sure the capabilities reported by _OSC/_PDC match the capabilities of the driver in Xen. Introduce a small helper to sanitize the buffer when running as Xen dom0. When Xen supports HWP, this serves as the equivalent of commit a21211672c ("ACPI / processor: Request native thermal interrupt handling via _OSC") to avoid SMM crashes. Xen will set bit ACPI_PROC_CAP_COLLAB_PROC_PERF (bit 12) in the capability bits and the _OSC/_PDC call will apply it. [ jandryuk: Mention Xen HWP's need. Support _OSC & _PDC ] Signed-off-by: Roger Pau Monné <roger.pau@citrix.com> Cc: stable@vger.kernel.org Signed-off-by: Jason Andryuk <jandryuk@gmail.com> Reviewed-by: Michal Wilczynski <michal.wilczynski@intel.com> Reviewed-by: Juergen Gross <jgross@suse.com> Link: https://lore.kernel.org/r/20231108212517.72279-1-jandryuk@gmail.com Signed-off-by: Juergen Gross <jgross@suse.com>		2023-11-13 07:22:00 +01:00
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asm	acpi/processor: sanitize _OSC/_PDC capabilities for Xen dom0	2023-11-13 07:22:00 +01:00
uapi/asm	platform/x86/amd/hsmp: add support for metrics tbl	2023-10-12 16:29:58 +03:00