From: Matthew Auld Date: Fri, 12 Apr 2024 15:03:03 +0000 (+0100) Subject: drm/xe/stolen: ignore first page for FBC X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=48b1f11c95e8c9ded6516b9e0fd3abddcfc89163;p=linux.git 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: Matt Roper Signed-off-by: Matthew Auld Reviewed-by: Maarten Lankhorst Link: https://patchwork.freedesktop.org/patch/msgid/20240412150301.273344-4-matthew.auld@intel.com --- diff --git a/drivers/gpu/drm/xe/compat-i915-headers/i915_gem_stolen.h b/drivers/gpu/drm/xe/compat-i915-headers/i915_gem_stolen.h index b4ccc4231e7d0..cb6c7598824be 100644 --- a/drivers/gpu/drm/xe/compat-i915-headers/i915_gem_stolen.h +++ b/drivers/gpu/drm/xe/compat-i915-headers/i915_gem_stolen.h @@ -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,