This is a simple ACPI patch. I'm submitting a revised version to
linux-acpi per Rafael Wysocki and linux-cxl per Dan Williams.
Thunderbird has added CRs so "patch -p1 -l" is needed.
==== start of patch ====
Subject: Make ACPI subsystem provide CEDT table
Signed-off-by: Robert Kiraly <me@xxxxxxxxxxxxx>
This is a simple patch to the ACPI subsystem. The patch adds ACPI
_SIG_CEDT to table_sigs[] in "drivers/acpi/tables.c".
Presently, CXL code isn't able to make use of the CEDT table at
the initrd stage. Subsequent to the change, the CEDT table can be
used.
If a developer plans to use the CEDT table to program the CXL
ports, this change is needed. Otherwise, it isn't expected to
make a difference.
I certify compliance with Developer’s Certificate of Origin 1.1
as listed in:
https://www.kernel.org/doc/html/v4.10/process/submitting-patches.
html
--- linux-5.16.old/drivers/acpi/tables.c
+++ linux-5.16/drivers/acpi/tables.c
@@ -500,7 +500,7 @@
ACPI_SIG_WDDT, ACPI_SIG_WDRT, ACPI_SIG_DSDT, ACPI_SIG_FADT,
ACPI_SIG_PSDT, ACPI_SIG_RSDT, ACPI_SIG_XSDT, ACPI_SIG_SSDT,
ACPI_SIG_IORT, ACPI_SIG_NFIT, ACPI_SIG_HMAT, ACPI_SIG_PPTT,
- ACPI_SIG_NHLT };
+ ACPI_SIG_CEDT, ACPI_SIG_NHLT };
#define ACPI_HEADER_SIZE sizeof(struct acpi_table_header)
==== end of patch ====
