On 3/10/26 12:18 AM, Nicolin Chen wrote:
On Mon, Mar 09, 2026 at 11:27:42PM +0530, Nilay Shroff wrote:
Looking at the warning it seems that this is a regression caused due to
commit a75b2be249d6 ("iommu: Add iommu_driver_get_domain_for_dev() helper").
Any help from the iommu expert would be appreciated. Though I am not expert,
it seems the following patch help fix this warning (I encourage the iommu
developers to confirm and/or take this forward) :
diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c
index 0ce71310b7d9..d122e8447831 100644
--- a/arch/powerpc/kernel/iommu.c
+++ b/arch/powerpc/kernel/iommu.c
@@ -1159,7 +1159,7 @@ spapr_tce_platform_iommu_attach_dev(struct iommu_domain
*platform_domain,
struct device *dev,
struct iommu_domain *old)
{
- struct iommu_domain *domain = iommu_get_domain_for_dev(dev);
+ struct iommu_domain *domain = iommu_driver_get_domain_for_dev(dev);
struct iommu_table_group *table_group;
struct iommu_group *grp;
Please let me know if any further information is needed.
Yea, that should be the fix.
Please submit a "PATCH rc" with:
Will pull this for my upcoming RC PR
https://patchwork.ozlabs.org/project/linuxppc-dev/patch/[email protected]/
Maddy
Fixes: a75b2be249d6 ("iommu: Add iommu_driver_get_domain_for_dev() helper")
Cc: [email protected]
Thanks!
Nicolin
