linux-kernel - Re: [PATCH v19 14/20] s390/vfio-ap: reset queues after adapter/domain unassignment

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Date:   Thu, 2 Jun 2022 11:00:05 -0400
From:   "Jason J. Herne" <jjherne@...ux.ibm.com>
To:     Tony Krowiak <akrowiak@...ux.ibm.com>, linux-s390@...r.kernel.org,
        linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Cc:     freude@...ux.ibm.com, borntraeger@...ibm.com, cohuck@...hat.com,
        mjrosato@...ux.ibm.com, pasic@...ux.ibm.com,
        alex.williamson@...hat.com, kwankhede@...dia.com,
        fiuczy@...ux.ibm.com
Subject: Re: [PATCH v19 14/20] s390/vfio-ap: reset queues after adapter/domain
 unassignment

On 4/4/22 18:10, Tony Krowiak wrote:
> When an adapter or domain is unassigned from an mdev attached to a KVM
> guest, one or more of the guest's queues may get dynamically removed. Since
> the removed queues could get re-assigned to another mdev, they need to be
> reset. So, when an adapter or domain is unassigned from the mdev, the
> queues that are removed from the guest's AP configuration (APCB) will be
> reset.
> 
> Signed-off-by: Tony Krowiak <akrowiak@...ux.ibm.com>
> ---
>   drivers/s390/crypto/vfio_ap_ops.c     | 152 +++++++++++++++++++-------
>   drivers/s390/crypto/vfio_ap_private.h |   2 +
>   2 files changed, 114 insertions(+), 40 deletions(-)


Reviewed-by: Jason J. Herne <jjherne@...ux.ibm.com>