On Wed, 20 May 2020, Roman Shaposhnik wrote: > On Wed, May 20, 2020 at 4:45 PM Stefano Stabellini > <sstabell...@kernel.org> 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. > > Great to see this! Stefano, any chance you can put it in a branch some place > so I can test the final version?
Here it is, but keep in mind that it is based on Linux master (because it is meant to go upstream): git://git.kernel.org/pub/scm/linux/kernel/git/sstabellini/xen.git fix-rip4-v1
