From: Felix Kuehling <felix.kuehling@amd.com>
Date: Wed, 13 May 2026 14:12:53 +0000 (-0500)
Subject: drm/ttm: Support 52-bit PAs in ttm_place
X-Git-Url: http://git.ipfire.org/gitweb/?a=commitdiff_plain;h=d989f135f71699294bb2ffd4726b526456e2db68;p=thirdparty%2Flinux.git

drm/ttm: Support 52-bit PAs in ttm_place

fpfn and lpfn in struct ttm_place are 32-bit page numbers. With 4KB page
size this can support up to 44-bit physical addressing. Grow these to
64-bit (uint64_t) to support larger physical addresses.

Signed-off-by: Felix Kuehling <felix.kuehling@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com>
Link: https://patch.msgid.link/20260513141253.20410-1-felix.kuehling@amd.com
---

diff --git a/include/drm/ttm/ttm_placement.h b/include/drm/ttm/ttm_placement.h
index b510a4812609f..ab2639e42c546 100644
--- a/include/drm/ttm/ttm_placement.h
+++ b/include/drm/ttm/ttm_placement.h
@@ -81,8 +81,8 @@
  * Structure indicating a possible place to put an object.
  */
 struct ttm_place {
-	unsigned	fpfn;
-	unsigned	lpfn;
+	uint64_t	fpfn;
+	uint64_t	lpfn;
 	uint32_t	mem_type;
 	uint32_t	flags;
 };