On Mon, Apr 11, 2022 at 3:36 PM Robin Murphy <[email protected]> wrote:
>
> Even if an IOMMU might be present for some PCI segment in the system,
> that doesn't necessarily mean it provides translation for the device
> we care about. Replace iommu_present() with a more appropriate check.
>
> Signed-off-by: Robin Murphy <[email protected]>
> ---
>
> v2: Rebase on habanalabs-next
>
> drivers/misc/habanalabs/common/debugfs.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/misc/habanalabs/common/debugfs.c
> b/drivers/misc/habanalabs/common/debugfs.c
> index 7c4a4d504e4c..a94f01713efd 100644
> --- a/drivers/misc/habanalabs/common/debugfs.c
> +++ b/drivers/misc/habanalabs/common/debugfs.c
> @@ -722,7 +722,7 @@ static int hl_access_mem(struct hl_device *hdev, u64
> addr, u64 *val,
> if (found)
> return 0;
>
> - if (!user_address || iommu_present(&pci_bus_type)) {
> + if (!user_address || device_iommu_mapped(&hdev->pdev->dev)) {
> rc = -EINVAL;
> goto err;
> }
> --
> 2.28.0.dirty
>
Reviewed-by: Oded Gabbay <[email protected]>
Applied to -next.
Thanks,
Oded
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