5.15-stable review patch. If anyone has any objections, please let me know.
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From: Si-Wei Liu si-wei.liu@oracle.com
[ Upstream commit 35025963326e44d8bced3eecd42d2f040f4f0024 ]
The starting iova address to iterate iotlb map entry within a range was set to an irrelevant value when passing to the itree_next() iterator, although luckily it doesn't affect the outcome of finding out the granule of the smallest iotlb map size. Fix the code to make it consistent with the following for-loop.
Fixes: 94abbccdf291 ("vdpa/mlx5: Add shared memory registration code") Signed-off-by: Si-Wei Liu si-wei.liu@oracle.com Signed-off-by: Dragos Tatulea dtatulea@nvidia.com Message-Id: 20241021134040.975221-3-dtatulea@nvidia.com Signed-off-by: Michael S. Tsirkin mst@redhat.com Acked-by: Jason Wang jasowang@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/vdpa/mlx5/core/mr.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/drivers/vdpa/mlx5/core/mr.c b/drivers/vdpa/mlx5/core/mr.c index 8b21f564678c9..32ce1a6aae0d2 100644 --- a/drivers/vdpa/mlx5/core/mr.c +++ b/drivers/vdpa/mlx5/core/mr.c @@ -227,7 +227,6 @@ static int map_direct_mr(struct mlx5_vdpa_dev *mvdev, struct mlx5_vdpa_direct_mr unsigned long lgcd = 0; int log_entity_size; unsigned long size; - u64 start = 0; int err; struct page *pg; unsigned int nsg; @@ -238,10 +237,9 @@ static int map_direct_mr(struct mlx5_vdpa_dev *mvdev, struct mlx5_vdpa_direct_mr struct device *dma = mvdev->vdev.dma_dev;
for (map = vhost_iotlb_itree_first(iotlb, mr->start, mr->end - 1); - map; map = vhost_iotlb_itree_next(map, start, mr->end - 1)) { + map; map = vhost_iotlb_itree_next(map, mr->start, mr->end - 1)) { size = maplen(map, mr); lgcd = gcd(lgcd, size); - start += size; } log_entity_size = ilog2(lgcd);