On Thu, 18 Mar 2021 14:38:53 -0400
Tony Krowiak wrote:
> On 3/17/21 7:17 PM, Halil Pasic wrote:
> > On Wed, 10 Mar 2021 10:05:59 -0500
> > Tony Krowiak wrote:
> >
> >> - ret = vfio_ap_mdev_reset_queues(mdev);
> >> + matrix_mdev = mdev_get_drvdata(mdev);
> > Is it
On Thu, 18 Mar 2021 13:54:06 -0400
Tony Krowiak wrote:
> > Is it guaranteed that matrix_mdev can't be NULL here? If yes, please
> > remind me of the mechanism that ensures this.
>
> The matrix_mdev is set as drvdata when the mdev is created and
> is only cleared when the mdev is removed.
On 3/17/21 7:17 PM, Halil Pasic wrote:
On Wed, 10 Mar 2021 10:05:59 -0500
Tony Krowiak wrote:
- ret = vfio_ap_mdev_reset_queues(mdev);
+ matrix_mdev = mdev_get_drvdata(mdev);
Is it guaranteed that matrix_mdev can't be NULL here? If yes, please
remind me of the
On 3/17/21 7:17 PM, Halil Pasic wrote:
On Wed, 10 Mar 2021 10:05:59 -0500
Tony Krowiak wrote:
- ret = vfio_ap_mdev_reset_queues(mdev);
+ matrix_mdev = mdev_get_drvdata(mdev);
Is it guaranteed that matrix_mdev can't be NULL here? If yes, please
remind me of the
On Wed, 10 Mar 2021 10:05:59 -0500
Tony Krowiak wrote:
> - ret = vfio_ap_mdev_reset_queues(mdev);
> + matrix_mdev = mdev_get_drvdata(mdev);
Is it guaranteed that matrix_mdev can't be NULL here? If yes, please
remind me of the mechanism that ensures this.
> +
> +
This patch fixes a lockdep splat introduced by commit f21916ec4826
("s390/vfio-ap: clean up vfio_ap resources when KVM pointer invalidated").
The lockdep splat only occurs when starting a Secure Execution guest.
Crypto virtualization (vfio_ap) is not yet supported for SE guests;
however, in order
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