Messages in this thread Patch in this message | | | From | Zhangfei Gao <> | Subject | [PATCH rc] iommu/sva: Fix SVA handle sharing in multi device case | Date | Tue, 27 Feb 2024 06:48:21 +0000 |
| |
iommu_sva_bind_device will directly goto out in multi-device case when found existing domain, ignoring list_add handle, which causes the handle to fail to be shared.
Fixes: 65d4418c5002 ("iommu/sva: Restore SVA handle sharing") Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> --- Based on rc6
drivers/iommu/iommu-sva.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/iommu/iommu-sva.c b/drivers/iommu/iommu-sva.c index 7f91c8d0064b..65814cbc8402 100644 --- a/drivers/iommu/iommu-sva.c +++ b/drivers/iommu/iommu-sva.c @@ -117,11 +117,11 @@ struct iommu_sva *iommu_sva_bind_device(struct device *dev, struct mm_struct *mm if (ret) goto out_free_domain; domain->users = 1; - refcount_set(&handle->users, 1); list_add(&domain->next, &mm->iommu_mm->sva_domains); - list_add(&handle->handle_item, &mm->iommu_mm->sva_handles); out: + refcount_set(&handle->users, 1); + list_add(&handle->handle_item, &mm->iommu_mm->sva_handles); mutex_unlock(&iommu_sva_lock); handle->dev = dev; handle->domain = domain; -- 2.34.1
| |