[PATCH v4 0/4] KVM: arm64: fix VGICv3 redistributor rollback

[Karl Mehltretter]

On Mon, Aug 31, 2026 at 10:10:00AM +0100, Karl Mehltretter wrote:
> Changes since v3:
> - Dropped the REDIST/REDIST_REGION serialization and VGIC init/destroy
>   rework, keeping the fix close to v2. (Marc)
> - Limited rollback to assignments from the new region so an older-region
>   assignment cannot be missed during concurrent vCPU creation.
> - Added Fuad's Reviewed-by tags to patches 1, 3 and 4. These are otherwise
>   unchanged from v3 (formerly patches 1, 4 and 5).
> 
> Previous version:
> v3: https://lore.kernel.org/r/20260822095346.53882-1-kmehltretter@gmail.com
> 
> Karl Mehltretter (4):
>   KVM: arm64: vgic-v3: Undo assignment on iodev registration failure
>   KVM: arm64: vgic-v3: Roll back assignments from the new region
>   KVM: arm64: selftests: Pass guest code to vm_gic_create_with_vcpus()
>   KVM: arm64: selftests: Test VGICv3 redistributor region retry
> 
>  arch/arm64/kvm/vgic/vgic-mmio-v3.c            |  54 ++++++--
>  tools/testing/selftests/kvm/arm64/vgic_init.c | 116 ++++++++++++++++--
>  2 files changed, 151 insertions(+), 19 deletions(-)

A friendly ping on v4. Patches 1, 3, and 4 have Fuad's Reviewed-by;
patch 2 was revised following Marc's feedback.

Thanks,
Karl