Subject: Re: [PATCH v6 04/25] iommu: Add IOMMU_DOMAIN_PLATFORM for S390

From: Baolu Lu <[email-masked]>
Date: Mon, 14 Aug 2023 10:20:25 +0800

On 2023/8/3 8:07, Jason Gunthorpe wrote:
> The PLATFORM domain will be set as the default domain and attached as
> normal during probe. The driver will ignore the initial attach from a NULL
> domain to the PLATFORM domain.
> 
> After this, the PLATFORM domain's attach_dev will be called whenever we
> detach from an UNMANAGED domain (eg for VFIO). This is the same time the
> original design would have called op->detach_dev().
> 
> This is temporary until the S390 dma-iommu.c conversion is merged.
> 
> Tested-by: Heiko Stuebner<[email-masked]>
> Tested-by: Niklas Schnelle<[email-masked]>
> Signed-off-by: Jason Gunthorpe<[email-masked]>
> ---
>   drivers/iommu/s390-iommu.c | 21 +++++++++++++++++++--
>   1 file changed, 19 insertions(+), 2 deletions(-)

Reviewed-by: Lu Baolu <[email-masked]>

Best regards,
baolu