linux-kernel - [PATCH drm-misc-next v10 05/12] drm/nouveau: bo: initialize GEM GPU VA interface

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Message-ID: <20230804182406.5222-6-dakr@redhat.com>
Date:   Fri,  4 Aug 2023 20:23:45 +0200
From:   Danilo Krummrich <dakr@...hat.com>
To:     airlied@...il.com, daniel@...ll.ch, tzimmermann@...e.de,
        mripard@...nel.org, corbet@....net, christian.koenig@....com,
        bskeggs@...hat.com, Liam.Howlett@...cle.com,
        matthew.brost@...el.com, boris.brezillon@...labora.com,
        alexdeucher@...il.com, ogabbay@...nel.org, bagasdotme@...il.com,
        willy@...radead.org, jason@...kstrand.net, donald.robson@...tec.com
Cc:     dri-devel@...ts.freedesktop.org, nouveau@...ts.freedesktop.org,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        Danilo Krummrich <dakr@...hat.com>,
        Dave Airlie <airlied@...hat.com>
Subject: [PATCH drm-misc-next v10 05/12] drm/nouveau: bo: initialize GEM GPU VA interface

Initialize the GEM's DRM GPU VA manager interface in preparation for the
(u)vmm implementation, provided by subsequent commits, to make use of it.

Reviewed-by: Dave Airlie <airlied@...hat.com>
Signed-off-by: Danilo Krummrich <dakr@...hat.com>
---
 drivers/gpu/drm/nouveau/nouveau_bo.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c
index 7724fe63067d..6130c99b6b2c 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bo.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bo.c
@@ -215,6 +215,7 @@ nouveau_bo_alloc(struct nouveau_cli *cli, u64 *size, int *align, u32 domain,
 	nvbo = kzalloc(sizeof(struct nouveau_bo), GFP_KERNEL);
 	if (!nvbo)
 		return ERR_PTR(-ENOMEM);
+
 	INIT_LIST_HEAD(&nvbo->head);
 	INIT_LIST_HEAD(&nvbo->entry);
 	INIT_LIST_HEAD(&nvbo->vma_list);
@@ -339,6 +340,11 @@ nouveau_bo_new(struct nouveau_cli *cli, u64 size, int align,
 	dma_resv_init(&nvbo->bo.base._resv);
 	drm_vma_node_reset(&nvbo->bo.base.vma_node);
 
+	/* This must be called before ttm_bo_init_reserved(). Subsequent
+	 * bo_move() callbacks might already iterate the GEMs GPUVA list.
+	 */
+	drm_gem_gpuva_init(&nvbo->bo.base);
+
 	ret = nouveau_bo_init(nvbo, size, align, domain, sg, robj);
 	if (ret)
 		return ret;
-- 
2.41.0