Patch "nouveau: reset the bo resource bus info after an eviction" has been added to the 6.8-stable tree

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This is a note to let you know that I've just added the patch titled

    nouveau: reset the bo resource bus info after an eviction

to the 6.8-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     nouveau-reset-the-bo-resource-bus-info-after-an-evic.patch
and it can be found in the queue-6.8 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 1a7d371244b9068e1de00940a304b8b001f8863f
Author: Dave Airlie <airlied@xxxxxxxxxx>
Date:   Mon Mar 11 17:20:37 2024 +1000

    nouveau: reset the bo resource bus info after an eviction
    
    [ Upstream commit f35c9af45ea7a4b1115b193d84858b14d13517fc ]
    
    Later attempts to refault the bo won't happen and the whole
    GPU does to lunch. I think Christian's refactoring of this
    code out to the driver broke this not very well tested path.
    
    Fixes: 141b15e59175 ("drm/nouveau: move io_reserve_lru handling into the driver v5")
    Cc: Christian König <christian.koenig@xxxxxxx>
    Signed-off-by: Dave Airlie <airlied@xxxxxxxxxx>
    Acked-by: Christian König <christian.koenig@xxxxxxx>
    Signed-off-by: Danilo Krummrich <dakr@xxxxxxxxxx>
    Link: https://patchwork.freedesktop.org/patch/msgid/20240311072037.287905-1-airlied@xxxxxxxxx
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c
index 00cc7d1abaa39..5d8ee17295424 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bo.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bo.c
@@ -1264,6 +1264,8 @@ nouveau_ttm_io_mem_reserve(struct ttm_device *bdev, struct ttm_resource *reg)
 			drm_vma_node_unmap(&nvbo->bo.base.vma_node,
 					   bdev->dev_mapping);
 			nouveau_ttm_io_mem_free_locked(drm, nvbo->bo.resource);
+			nvbo->bo.resource->bus.offset = 0;
+			nvbo->bo.resource->bus.addr = NULL;
 			goto retry;
 		}
 




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