Re: [PATCH v3 0/2] s390x/kvm: Add ASTFLE facility 2 for nested virtualization

[Cornelia Huck <cohuck@redhat.com>]

On Wed, Jul 01 2026, Christoph Schlameuss <schlameuss@linux.ibm.com> wrote:

> Update the kernel headers to get access to
> KVM_S390_VM_CPU_FEAT_ASTFLEIE2 and allow passing the feature through to
> guest on IBM z16 onwards.
>
> Signed-off-by: Christoph Schlameuss <schlameuss@linux.ibm.com>
> ---
> Changes in v3:
> - include linux v7.2-rc1 headers
>
> Changes in v2:
> - Isolate the linux-header update into its own commit (thanks Thomas)
> - Correct naming of the feature (thanks Hendrik)
> - Add S390_FEAT_SIE_ASTFLEIE2 to full_GEN16_GA1 only as it depends on
>   SIEF2 (thanks Christian)
>
> ---
> Christoph Schlameuss (2):
>       linux-headers: Update to Linux v7.2-rc1 with KVM_S390_VM_CPU_FEAT_ASTFLEIE2
>       s390x/kvm: Add ASTFLE facility 2 for nested virtualization
>
>  hw/s390x/sclp.c                                 |  2 +
>  include/hw/s390x/sclp.h                         |  4 +-
>  include/standard-headers/drm/drm_fourcc.h       | 54 ++++++++++-------
>  include/standard-headers/linux/ethtool.h        |  3 +
>  include/standard-headers/linux/pci_regs.h       |  2 +
>  include/standard-headers/linux/virtio_can.h     | 78 +++++++++++++++++++++++++
>  include/standard-headers/linux/virtio_console.h |  2 +-
>  include/standard-headers/linux/virtio_gpu.h     |  9 +++
>  linux-headers/asm-s390/kvm.h                    |  1 +
>  linux-headers/asm-x86/kvm.h                     |  2 +
>  linux-headers/linux/iommufd.h                   | 12 ++--
>  linux-headers/linux/kvm.h                       |  1 +
>  target/s390x/cpu_features.c                     |  3 +
>  target/s390x/cpu_features.h                     |  1 +
>  target/s390x/cpu_features_def.h.inc             |  3 +
>  target/s390x/cpu_models.c                       |  2 +
>  target/s390x/gen-features.c                     |  1 +
>  target/s390x/kvm/kvm.c                          |  1 +
>  18 files changed, 153 insertions(+), 28 deletions(-)

Thanks, applied.