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[1/3] drm/i915: Exclude reserved stolen from driver use

Message ID 20211208153404.27546-2-ramalingam.c@intel.com (mailing list archive)
State New, archived
Headers show
Series drm/i915: Sanity Check for device memory region | expand

Commit Message

Ramalingam C Dec. 8, 2021, 3:34 p.m. UTC 
From: Chris Wilson <chris@chris-wilson.co.uk>

Remove the portion of stolen memory reserved for private use from driver
access.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
cc: Matthew Auld <matthew.auld@intel.com>
Signed-off-by: Ramalingam C <ramalingam.c@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
---
 drivers/gpu/drm/i915/gem/i915_gem_stolen.c | 3 +++
 1 file changed, 3 insertions(+)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_stolen.c b/drivers/gpu/drm/i915/gem/i915_gem_stolen.c
index bce03d74a0b4..6ea3ca21cdf3 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_stolen.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_stolen.c
@@ -488,6 +488,9 @@  static int i915_gem_init_stolen(struct intel_memory_region *mem)
 		return 0;
 	}
 
+	/* Exclude the reserved region from driver use */
+	mem->region.end = reserved_base - 1;
+
 	/* It is possible for the reserved area to end before the end of stolen
 	 * memory, so just consider the start. */
 	reserved_total = stolen_top - reserved_base;