> On Jul 15, 2019, at 6:57 PM, Amit Shah <a...@infradead.org> wrote: > > On Mon, 2019-07-15 at 14:59 +0100, George Dunlap wrote: >> Looking through the notes, it seems like the first part of this >> discussion, re hypervisor upgrade / downgrade & libraries, was partly >> covered in the distro session, in which Debian's Xen version co- >> install >> was discussed and found useful even if we had a hypervisor , Ian >> Jackson >> agreed to post Debian's co-install patches. > > Yea. > > That's also useful for the live-update project, where we want to (in > the future) use the userspace tools and libraries depending on which > Xen version is in use at a time.
Just to clarify — seems I had an editing fail above; it should have said, “even if we had a stable ABI between the hypervisor and the tools”. In that case, upgrading to a newer version of Xen but remaining on the same userspace tools should continue to work, and so having multiple versions should be less of an issue (as I presume you’d be unlikely to downgrade in a live update). But versioned subdirectories and symlinks is definitely something worth doing. -George _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel
