On Thu, 22 Oct 2020 at 09:25, Mihai Carabas <mihai.cara...@oracle.com> wrote: > The patchset was assembled from chuncks from some old patches from 2018 [1] > which were left unmerged and some additions from me. Surprisingly their Linux > kernel counterpart were merged (so the pvpanic driver from the kernel supports > mmio). > > I have seen the discussions about moving the pvpanic to PCI [1]. Those patches > were sent but nothing happened. Also they are not trivial and require major > modifications at the driver level also. Given the fact that we already have > mmio driver support for pvpanic in the Linux kernel, I have sent these patches > to ask again the maintainers if this can be merged.
I'm afraid the answer is still the same. You need to provide a convincing argument for why this needs to be an MMIO device rather than a PCI device. I really don't want to add MMIO devices to the virt board if I can avoid it, because they're all extra code and potential extra security boundary attack surface. PCI devices are guest probeable and user-pluggable so they're almost always nicer to use than MMIO. thanks -- PMM
