Commit 48b1f11c authored by Matthew Auld's avatar Matthew Auld
Browse files

drm/xe/stolen: ignore first page for FBC 



We have observed underruns on some platforms if the CFB offset is within
the first page of stolen. Just like i915 skip the first page.

v2 (Maarten)
  - Also align the start.

BSpec: 50214
Reported-by: default avatarMatt Roper <matthew.d.roper@intel.com>
Signed-off-by: default avatarMatthew Auld <matthew.auld@intel.com>
Reviewed-by: default avatarMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240412150301.273344-4-matthew.auld@intel.com
parent 9890821f

drivers/gpu/drm/xe/compat-i915-headers/i915_gem_stolen.h

+6 −1
Original line number Diff line number Diff line
@@ -19,8 +19,13 @@ static inline int i915_gem_stolen_insert_node_in_range(struct xe_device *xe, 
	int err;

	u32 flags = XE_BO_FLAG_PINNED | XE_BO_FLAG_STOLEN;



	if (align)

	if (start < SZ_4K)

		start = SZ_4K;



	if (align) {

		size = ALIGN(size, align);

		start = ALIGN(start, align);

	}



	bo = xe_bo_create_locked_range(xe, xe_device_get_root_tile(xe),

				       NULL, size, start, end,