linux-kernel - Re: [PATCH v3 0/2] s390/vfio-ap: fix two problems discovered in the vfio

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Message-ID: <1e3a21be-c103-3478-ae91-2f5a721c465d@linux.ibm.com>
Date:   Mon, 29 Aug 2022 09:28:51 -0400
From:   Anthony Krowiak <akrowiak@...ux.ibm.com>
To:     linux-s390@...r.kernel.org, linux-kernel@...r.kernel.org,
        kvm@...r.kernel.org
Cc:     jjherne@...ux.ibm.com, borntraeger@...ibm.com, cohuck@...hat.com,
        mjrosato@...ux.ibm.com, pasic@...ux.ibm.com,
        alex.williamson@...hat.com
Subject: Re: [PATCH v3 0/2] s390/vfio-ap: fix two problems discovered in the
 vfio_ap driver

These two patches fix a couple of bugs in the vfio_ap driver code, it 
would be nice to get some r-b action so we can merge these fixes ASAP. 
Thanks.

On 8/23/22 11:06 AM, Tony Krowiak wrote:
> Two problems have been discovered with the vfio_ap device driver since the
> hot plug support was recently introduced:
>
> 1. Attempting to remove a matrix mdev after assigning a duplicate adapter
>     or duplicate domain results in a hang.
>
> 2. The queues associated with an adapter or domain being unassigned from
>     the matrix mdev do not get unlinked from it.
>
> Two patches are provided to resolve these problems.
>
> Change log v2 => v3:
> --------------------
> * Replaced the wrong commit IDs in the 'Fixes' tags in both patches.
>    (Halil and Alexander)
>
> * Changed the subject line and description of patch 01/02 to better reflect the
>    code changes in the patch. (Halil)
>
> Tony Krowiak (2):
>    s390/vfio-ap: bypass unnecessary processing of AP resources
>    s390/vfio-ap: fix unlinking of queues from the mdev
>
>   drivers/s390/crypto/vfio_ap_ops.c | 36 +++++++++++++++++++++++++++----
>   1 file changed, 32 insertions(+), 4 deletions(-)
>