Messages in this thread | ![/](/images/icornerl.gif) | | Subject | Re: [PATCH v2 00/11] fix swiotlb-xen for RPi4 | From | Boris Ostrovsky <> | Date | Thu, 4 Jun 2020 14:32:43 -0400 |
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On 6/3/20 6:22 PM, 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
(+ Julien)
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
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