Progress:
 * UM-2 [QEMU upstream maintainership]
  + investigating a bug report about the guest UEFI crashing on
    startup when using KVM on AArch64 with an SMP guest (sadly I haven't
    been able to repro it myself thus far)
 * QEMU-422 [QEMU Arm Neoverse V1 vCPU for TCG]
  + audited code to check we can enable FEAT_TTL in QEMU (ie we ignore the
    new TTL hint field in TLB invalidate operations)
  + audited code to check we can enable FEAT_BBM level 2 in QEMU
    (our TLB implementation never allows multiple clashing TLB entries)
  + audited code to check we can enable SMMUv3.2-BBML2 in our SMMUv3
    (our SMMU TLB does allow multiple entries but will always select
    the one for the lowest level and ignore the others)
  + sent patches to advertise FEAT_TTL, FEAT_BBM, SMMUv3.2-BBML2 in
    CPU and SMMU ID registers

-- PMM
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