From: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Date: Mon, 8 Sep 2025 10:12:40 +0000 (+0200)
Subject: drm/xe/display: Convert __xe_pin_fb_vma()
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=7bcb6e38c14d7d2654555a1b05b2a9a5411c693c;p=users%2Fhch%2Fmisc.git

drm/xe/display: Convert __xe_pin_fb_vma()

Convert __xe_pin_fb_vma() for exhaustive eviction
using xe_validation_guard().

v2:
- Avoid gotos from within xe_validation_guard(). (Matt Brost)
- Adapt to signature change of xe_validation_guard(). (Matt Brost)
- Use interruptible waiting, since xe_bo_migrate() already does that.

Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Link: https://lore.kernel.org/r/20250908101246.65025-8-thomas.hellstrom@linux.intel.com
---

diff --git a/drivers/gpu/drm/xe/display/xe_fb_pin.c b/drivers/gpu/drm/xe/display/xe_fb_pin.c
index 3406dca285bd..a5c35e9ff2ef 100644
--- a/drivers/gpu/drm/xe/display/xe_fb_pin.c
+++ b/drivers/gpu/drm/xe/display/xe_fb_pin.c
@@ -281,7 +281,8 @@ static struct i915_vma *__xe_pin_fb_vma(const struct intel_framebuffer *fb,
 	struct i915_vma *vma = kzalloc(sizeof(*vma), GFP_KERNEL);
 	struct drm_gem_object *obj = intel_fb_bo(&fb->base);
 	struct xe_bo *bo = gem_to_xe_bo(obj);
-	struct drm_exec *exec = XE_VALIDATION_UNIMPLEMENTED;
+	struct xe_validation_ctx ctx;
+	struct drm_exec exec;
 	int ret;
 
 	if (!vma)
@@ -309,17 +310,22 @@ static struct i915_vma *__xe_pin_fb_vma(const struct intel_framebuffer *fb,
 	 * Pin the framebuffer, we can't use xe_bo_(un)pin functions as the
 	 * assumptions are incorrect for framebuffers
 	 */
-	ret = ttm_bo_reserve(&bo->ttm, false, false, NULL);
-	if (ret)
-		goto err;
-
-	if (IS_DGFX(xe))
-		ret = xe_bo_migrate(bo, XE_PL_VRAM0, NULL, exec);
-	else
-		ret = xe_bo_validate(bo, NULL, true, exec);
-	if (!ret)
-		ttm_bo_pin(&bo->ttm);
-	ttm_bo_unreserve(&bo->ttm);
+	xe_validation_guard(&ctx, &xe->val, &exec, (struct xe_val_flags) {.interruptible = true},
+			    ret) {
+		ret = drm_exec_lock_obj(&exec, &bo->ttm.base);
+		drm_exec_retry_on_contention(&exec);
+		if (ret)
+			break;
+
+		if (IS_DGFX(xe))
+			ret = xe_bo_migrate(bo, XE_PL_VRAM0, NULL, &exec);
+		else
+			ret = xe_bo_validate(bo, NULL, true, &exec);
+		drm_exec_retry_on_contention(&exec);
+		xe_validation_retry_on_oom(&ctx, &ret);
+		if (!ret)
+			ttm_bo_pin(&bo->ttm);
+	}
 	if (ret)
 		goto err;