On 19/10/2018 14:58, Marc Zyngier wrote:
> Paolo, Radim,
>
> This is the bulk of the KVM/arm changes for 4.20. This time, the
> biggest change by far is the support for variable addressing range in
> guests, allowing userspace to size arm64 VMs from 32 to 52bits instead
> of the hard-coded 40bits we've enjoyed so far. Other than that, we
> have a random selection of small fixes and cleanups.
>
> Note that this will generate a few minor conflicts with the arm64 tree,
> which should be resolved as per this branch[1].
That's a bit annoying. KVM parts of "Support Common Not Private
translations" should not have gone through the arm64 tree. Instead,
Catalin should have placed the first patches in a topic branch for you
to pull.
This minimizes the effort for everyone else, basically. Conflicts need
to be sorted out by Stephen Rothwell, myself and Linus/Greg, while topic
branches just work.
If it weren't for the include/uapi/linux/kvm.h change, where I have to
sort the capability numbers as they are assigned by the various
architecture maintainers(*), I would have told you to just send the pull
request to Catalin this time through (but that would just be a band-aid,
it should not be the norm). Anyway, just remember this next time.
Thanks,
Paolo
(*) That's also a bit suboptimal, because it complicates
debugging of new features after they're merged, but I have
no better idea.
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