Re: [PATCH] KVM: s390: reset crypto attributes for all vcpus

[Cornelia Huck]

On Thu, 19 Apr 2018 17:13:52 -0400
Tony Krowiak <akrowiak@xxxxxxxxxxxxxxxxxx> wrote:

> Introduces a new function to reset the crypto attributes for all
> vcpus whether they are running or not. Each vcpu in KVM will
> be removed from SIE prior to resetting the crypto attributes in its
> SIE state description. After all vcpus have had their crypto attributes
> reset the vcpus will be restored to SIE.
> 
> This function is incorporated into the kvm_s390_vm_set_crypto(kvm)
> function to fix a reported issue whereby the crypto key wrapping
> attributes could potentially get out of synch for running vcpus.
> 
> Reported-by: Halil Pasic <pasic@xxxxxxxxxxxxxxxxxx>
> Signed-off-by: Tony Krowiak <akrowiak@xxxxxxxxxxxxxxxxxx>
> ---
>  arch/s390/kvm/kvm-s390.c |   18 ++++++++++++++----
>  arch/s390/kvm/kvm-s390.h |   13 +++++++++++++
>  2 files changed, 27 insertions(+), 4 deletions(-)

Reviewed-by: Cornelia Huck <cohuck@xxxxxxxxxx>