On Thu, Feb 6, 2025 at 7:22 PM David Hildenbrand <david@xxxxxxxxxx> wrote: > > On 06.02.25 15:59, Albert Esteve wrote: > > Hi! > > > > On Thu, Feb 6, 2025 at 3:30 PM Stefan Hajnoczi <stefanha@xxxxxxxxxx> wrote: > >> > >> On Thu, Feb 06, 2025 at 08:37:07AM -0500, Vivek Goyal wrote: > >>> And then there are challenges at QEMU level. virtiofsd needs additional > >>> vhost-user commands to implement DAX and these never went upstream in > >>> QEMU. I hope these challenges are sorted at some point of time. > >> > >> Albert Esteve has been working on QEMU support: > >> https://lore.kernel.org/qemu-devel/20240912145335.129447-1-aesteve@xxxxxxxxxx/ > >> > >> He has a viable solution. I think the remaining issue is how to best > >> structure the memory regions. The reason for slow progress is not > >> because it can't be done, it's probably just because this is a > >> background task. > > > > It is partially that, indeed. But what has me blocked for now on posting the > > next version is that I was reworking a bit the MMAP strategy. > > Following David comments, I am relying more on RAMBlocks and > > subregions for mmaps. But this turned out more difficult than anticipated. > > Yeah, if that turns out to be too painful, we could start with the > previous approach and work on that later. I also did not expect that to > become that complicated. Thanks. I'd like to do it properly, so I think will try a bit more to get it to work. Maybe another week. If I do not manage, I may do what you suggested (I'll align with you first) to move the patch forward. That said, if I end up doing that, I will definitively revisit it later. BR, Albert. > > -- > Cheers, > > David / dhildenb >
