Re: [PATCH v2 0/2] s390x/kvm: Add ASTFLE facility 2 for nested virtualization

[Cornelia Huck <cohuck@redhat.com>]

On Tue, Mar 24 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.
>
> Cc: qemu-devel@nongnu.org
> Cc: Halil Pasic <pasic@linux.ibm.com>
> Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
> Cc: Eric Farman <farman@linux.ibm.com>
> Cc: Matthew Rosato <mjrosato@linux.ibm.com>
> Cc: Richard Henderson <richard.henderson@linaro.org>
> Cc: Ilya Leoshkevich <iii@linux.ibm.com>
> Cc: Thomas Huth <thuth@redhat.com>
> Cc: Michael S. Tsirkin <mst@redhat.com>
> Cc: Cornelia Huck <cohuck@redhat.com>
> Cc: Paolo Bonzini <pbonzini@redhat.com>
> Cc: Hendrik Brueckner <brueckner@linux.ibm.com>
> To: qemu-s390x@nongnu.org
> Cc: kvm@vger.kernel.org
>
> Signed-off-by: Christoph Schlameuss <schlameuss@linux.ibm.com>
> ---
> 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.x 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 +++-
>  linux-headers/asm-s390/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 +
>  9 files changed, 17 insertions(+), 1 deletion(-)
> ---
> base-commit: fa4b2e31e649ba6fdb3eb2dd43952aad4a3bd675
> change-id: 20260209-astfleie2-85eec9fd9213
>
> Best regards,
> -- 
> Christoph Schlameuss <schlameuss@linux.ibm.com>

Looking through old emails: Can we respin with a proper headers update by
now, or is the kernel change still pending? (Or did I miss an update? :)