[PATCH v2 0/7] Drivers: hv: Fix NEED_RESCHED_LAZY and use common APIs
Wei Liu
wei.liu at kernel.org
Thu Sep 4 16:41:27 PDT 2025
On Wed, Aug 27, 2025 at 05:01:49PM -0700, Sean Christopherson wrote:
> Fix a bug where MSHV root partitions (and upper-level VTL code) don't honor
> NEED_RESCHED_LAZY, and then deduplicate the TIF related MSHV code by turning
> the "kvm" entry APIs into more generic "virt" APIs.
>
> This version is based on
>
> git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux.git hyperv-next
>
> in order to pickup the VTL changes that are queued for 6.18. I also
> squashed the NEED_RESCHED_LAZY fixes for root and VTL modes into a single
> patch, as it should be easy/straightforward to drop the VTL change as needed
> if we want this in 6.17 or earlier.
>
> That effectively means the full series is dependent on the VTL changes being
> fully merged for 6.18. But I think that's ok as it's really only the MSHV
> changes that have any urgency whatsoever, and I assume that Microsoft is
> the only user that truly cares about the MSHV root fix. I.e. if the whole
> thing gets delayed, I think it's only the Hyper-V folks that are impacted.
>
> I have no preference what tree this goes through, or when, and can respin
> and/or split as needed.
>
> As with v1, the Hyper-V stuff and non-x86 architectures are compile-tested
> only.
>
> v2:
> - Rebase on hyperv-next.
> - Fix and converge the VTL code as well. [Peter, Nuno]
>
> v1: https://lore.kernel.org/all/20250825200622.3759571-1-seanjc@google.com
>
I dropped the mshv_vtl changes in this series and applied the rest
(including the KVM changes) to hyperv-next.
Thanks,
Wei
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