Re: [PATCH 0/5] ACPI: bus: _OSC fixes

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Am 12.03.24 um 21:10 schrieb Rafael J. Wysocki:

On Sat, Mar 9, 2024 at 9:13 PM Armin Wolf <W_Armin@xxxxxx> wrote:
This patch series fixes the handling of various ACPI features bits
when evaluating _OSC.

The first three patches fix the reporting of various features supported
by the kernel, while the fourth patch corrects the feature bit used to
indicate support for the "Generic Initiator Affinity" in SRAT.

The last patch fixes the reporting of IRQ ResourceSource support. Unlike
the other feature bits, the ACPI specification states that this feature
bit might be used by the ACPI firmware to indicate whether or not it
supports the usage of IRQ ResourceSource:

         "If not set, the OS may choose to ignore the ResourceSource
          parameter in the extended interrupt descriptor."

Since the code responsible for parsing IRQ ResourceSource already checks
if ResourceSource is present, i assumed that we can omit taking this
into account.

All patches where tested on a Asus Prime B650-Plus and a Dell Inspiron
3505.

Armin Wolf (5):
   ACPI: bus: Indicate support for _TFP thru _OSC
   ACPI: bus: Indicate support for more than 16 p-states thru _OSC
   ACPI: bus: Indicate support for the Generic Event Device thru _OSC
   ACPI: Fix Generic Initiator Affinity _OSC bit
   ACPI: bus: Indicate support for IRQ ResourceSource thru _OSC

  drivers/acpi/bus.c   | 5 +++++
  include/linux/acpi.h | 6 +++++-
  2 files changed, 10 insertions(+), 1 deletion(-)

--
All of that looks reasonable to me, but do you know about systems in
the field where any of these patches actually fix functionality?

If not, I'd prefer to queue them up for 6.10 as they are likely to
change behavior, at least in corner cases.

Thanks!

Hi,

i know no system which even queries those feature bits, so i am fine with
this landing in 6.10.

Thanks,
Armin Wolf






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