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ACPI: PM: s2idle: Enable Low-Power S0 Idle MSFT UUID for non-AMD systems

Lenny Szubowicz requested to merge lszubowi/centos-stream-9:rhel-24422 into main

JIRA: https://issues.redhat.com/browse/RHEL-25779

commit 073237281a508ac80ec025872ad7de50cfb5a28a
Author: Rafael J. Wysocki rafael.j.wysocki@intel.com
Date: Tue Feb 6 20:33:45 2024 +0100

ACPI: PM: s2idle: Enable Low-Power S0 Idle MSFT UUID for non-AMD systems  

Systems based on Intel platforms that use the MSFT UUID for Low-Power S0  
Idle (LPS0) have started to ship, so allow the kernel to use the MSFT  
UUID in the non-AMD case too, but in that case make it avoid evaluating  
the same _DSM function for two different UUIDs and prioritize the MSFT  
one.  

While at it, combine two MSFT _DSM function mask checks in  
acpi_s2idle_restore_early() so as to make it reflect the  
acpi_s2idle_prepare_late() flow more closely and adjust the  
Modern Standby entry and exit comments slightly.  

Non-AMD systems that do not support MSFT UUID for Low-power S0 Idle are  
not expected to be affected by this change in any way.  

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>  
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>

Signed-off-by: Lenny Szubowicz lszubowi@redhat.com

Edited by Lenny Szubowicz

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