Re: [PATCH v2] iommu/vt-d: Flush cache for PASID table before using it

[Baolu Lu]

On 12/21/25 20:35, Dmytro Maluka wrote:
> When writing the address of a freshly allocated zero-initialized PASID
> table to a PASID directory entry, do that after the CPU cache flush for
> this PASID table, not before it, to avoid the time window when this
> PASID table may be already used by non-coherent IOMMU hardware while
> its contents in RAM is still some random old data, not zero-initialized.
>
> v1 -> v2:
> Add Fixes: tag.
>
> Fixes: 194b3348bdbb ("iommu/vt-d: Fix PASID directory pointer coherency")
> Signed-off-by: Dmytro Maluka<dmaluka@xxxxxxxxxxxx>
> ---
>   drivers/iommu/intel/pasid.c | 7 ++++---
>   1 file changed, 4 insertions(+), 3 deletions(-)

Queued for iommu next.

Thanks,
baolu