On Thu, Feb 06, 2025 at 03:59:03PM +0100, 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. > > I hope I can make it work this month and then post the next version. > If there are no major blockers/reworks, further iterations on the > patch shall go smoother. > > I have a separate patch for the vhost-user spec which could > iterate faster, if that'd help. Let's see if anyone needs the vhost-user spec extension now. Otherwise it seems fine to merge it together with the implementation of that spec. Stefan
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