Messages in this thread | | | Date | Tue, 2 Jun 2020 14:51:02 -0700 (PDT) | From | Stefano Stabellini <> | Subject | Re: [PATCH 00/10] fix swiotlb-xen for RPi4 |
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I would like to ask the maintainers, Juergen, Boris, Konrad, whether you have any more feedback before I send v2 of the series.
Cheers,
Stefano
On Wed, 20 May 2020, Stefano Stabellini wrote: > Hi all, > > This series is a collection of fixes to get Linux running on the RPi4 as > dom0. > > Conceptually there are only two significant changes: > > - make sure not to call virt_to_page on vmalloc virt addresses (patch > #1) > - use phys_to_dma and dma_to_phys to translate phys to/from dma > addresses (all other patches) > > In particular in regards to the second part, the RPi4 is the first > board where Xen can run that has the property that dma addresses are > different from physical addresses, and swiotlb-xen was written with the > assumption that phys addr == dma addr. > > This series adds the phys_to_dma and dma_to_phys calls to make it work. > > > Cheers, > > Stefano >
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