[PATCH 6/6] drm/xe/stolen: ignore first page for FBC

[Matthew Auld <matthew.auld@intel.com>]

Seems like we can potentially hit underruns if the CFB offset is within
the first page of stolen. Just like i915 skip the first page.

BSpec: 50214
Reported-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
---
 drivers/gpu/drm/xe/compat-i915-headers/i915_gem_stolen.h | 3 +++
 1 file changed, 3 insertions(+)

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 bd233007c1b7..003474cfdf31 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
@@ -19,6 +19,9 @@ static inline int i915_gem_stolen_insert_node_in_range(struct xe_device *xe,
 	int err;
 	u32 flags = XE_BO_CREATE_PINNED_BIT | XE_BO_CREATE_STOLEN_BIT;
 
+	if (start < SZ_4K)
+		start = SZ_4K;
+
 	if (align)
 		size = ALIGN(size, align);
 
-- 
2.43.0