linux-kernel - [PATCH v1 12/26] ACPICA: ACPI 6.4: PPTT: include all fields in subtable type1

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Message-ID: <1851677.VLH7GnMWUR@rafael.j.wysocki>
Date: Wed, 14 Jan 2026 13:26:26 +0100
From: "Rafael J. Wysocki" <rafael@...nel.org>
To: Linux ACPI <linux-acpi@...r.kernel.org>
Cc: LKML <linux-kernel@...r.kernel.org>,
 "Dumbre, Saket" <saket.dumbre@...el.com>
Subject:
 [PATCH v1 12/26] ACPICA: ACPI 6.4: PPTT: include all fields in subtable type1

From: Ben Horgan <ben.horgan@....com>

In PPTT version 3 an extra field, Cache ID, was added to the Cache Type
Structure.  The struct, struct acpi_pptt_cache_v1, contains only this field. This
differs from the treatment of other versioned structures and is unexpected
for linux which reuses the actbl2.h header file. Include all the fields of
the new Cache Type Structure in struct acpi_pptt_cache_v1 and fix up all uses.

Link: https://github.com/acpica/acpica/commit/a9ec9105f552
Signed-off-by: Ben Horgan <ben.horgan@....com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
---
 include/acpi/actbl2.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/include/acpi/actbl2.h b/include/acpi/actbl2.h
index 617be4bd3d4a..15856ae8b1e1 100644
--- a/include/acpi/actbl2.h
+++ b/include/acpi/actbl2.h
@@ -2953,6 +2953,15 @@ struct acpi_pptt_cache {
 /* 1: Cache Type Structure for PPTT version 3 */

 struct acpi_pptt_cache_v1 {
+	struct acpi_subtable_header header;
+	u16 reserved;
+	u32 flags;
+	u32 next_level_of_cache;
+	u32 size;
+	u32 number_of_sets;
+	u8 associativity;
+	u8 attributes;
+	u16 line_size;
 	u32 cache_id;
 };

-- 
2.51.0