[PATCH v6 03/25] powerpc/iommu: Setup a default domain and remove set_platform_dma_ops

Baolu Lu baolu.lu at linux.intel.com
Mon Aug 14 12:13:45 AEST 2023

On 2023/8/3 8:07, Jason Gunthorpe wrote:
> POWER is using the set_platform_dma_ops() callback to hook up its private
> dma_ops, but this is buired under some indirection and is weirdly
> happening for a BLOCKED domain as well.
> For better documentation create a PLATFORM domain to manage the dma_ops,
> since that is what it is for, and make the BLOCKED domain an alias for
> it. BLOCKED is required for VFIO.
> Also removes the leaky allocation of the BLOCKED domain by using a global
> static.
> Signed-off-by: Jason Gunthorpe<jgg at nvidia.com>
> ---
>   arch/powerpc/kernel/iommu.c | 38 +++++++++++++++++--------------------
>   1 file changed, 17 insertions(+), 21 deletions(-)

Not sure how to fix the fake blocking domain in this driver.

But it's not the purpose of this patch, so

Reviewed-by: Lu Baolu <baolu.lu at linux.intel.com>

Best regards,

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