Subject: Re: [PATCH v1 4/9] powerpc: Convert to physical address DMA mapping

From: Jason Gunthorpe <[email-masked]>
Date: Fri, 3 Oct 2025 13:35:05 -0300

On Sun, Sep 28, 2025 at 06:02:24PM +0300, Leon Romanovsky wrote:
> From: Leon Romanovsky <[email-masked]>
> 
> Adapt PowerPC DMA to use physical addresses in order to prepare code
> to removal .map_page and .unmap_page.
> 
> Signed-off-by: Leon Romanovsky <[email-masked]>
> ---
>  arch/powerpc/include/asm/iommu.h         |  8 +++---
>  arch/powerpc/kernel/dma-iommu.c          | 22 +++++++---------
>  arch/powerpc/kernel/iommu.c              | 14 +++++-----
>  arch/powerpc/platforms/ps3/system-bus.c  | 33 ++++++++++++++----------
>  arch/powerpc/platforms/pseries/ibmebus.c | 15 ++++++-----
>  arch/powerpc/platforms/pseries/vio.c     | 21 ++++++++-------
>  6 files changed, 60 insertions(+), 53 deletions(-)

I think this is good enough for PPC anything more looks quite hard

Reviewed-by: Jason Gunthorpe <[email-masked]>

Jason