Re: [PATCH] KVM: s390: Disallow invalid bits in kvm_valid_regs and kvm_dirty_regs

[Cornelia Huck]

On Wed,  4 Sep 2019 09:13:08 +0200
Thomas Huth <thuth@xxxxxxxxxx> wrote:

> If unknown bits are set in kvm_valid_regs or kvm_dirty_regs, this
> clearly indicates that something went wrong in the KVM userspace
> application. The x86 variant of KVM already contains a check for
> bad bits (and the corresponding kselftest checks this), so let's
> do the same on s390x now, too.
> 
> Signed-off-by: Thomas Huth <thuth@xxxxxxxxxx>
> ---
>  arch/s390/include/uapi/asm/kvm.h              |  6 ++++
>  arch/s390/kvm/kvm-s390.c                      |  4 +++
>  .../selftests/kvm/s390x/sync_regs_test.c      | 30 +++++++++++++++++++
>  3 files changed, 40 insertions(+)

With splitting out the selftest,
Reviewed-by: Cornelia Huck <cohuck@xxxxxxxxxx>