linux-kernel - Re: [PATCH v6 04/10] s390: vfio-ap: filter CRYCB bits for unavailable queue devices

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Message-Id: <20190918190433.713f4a93.pasic@linux.ibm.com>
Date:   Wed, 18 Sep 2019 19:04:33 +0200
From:   Halil Pasic <pasic@...ux.ibm.com>
To:     Tony Krowiak <akrowiak@...ux.ibm.com>
Cc:     linux-s390@...r.kernel.org, linux-kernel@...r.kernel.org,
        kvm@...r.kernel.org, freude@...ux.ibm.com, borntraeger@...ibm.com,
        cohuck@...hat.com, mjrosato@...ux.ibm.com, pmorel@...ux.ibm.com,
        alex.williamson@...hat.com, kwankhede@...dia.com,
        jjherne@...ux.ibm.com
Subject: Re: [PATCH v6 04/10] s390: vfio-ap: filter CRYCB bits for
 unavailable queue devices

On Fri, 13 Sep 2019 17:26:52 -0400
Tony Krowiak <akrowiak@...ux.ibm.com> wrote:

> +static void vfio_ap_mdev_get_crycb_matrix(struct ap_matrix_mdev *matrix_mdev)
> +{
> +	unsigned long apid, apqi;
> +	unsigned long masksz = BITS_TO_LONGS(AP_DEVICES) *
> +			       sizeof(unsigned long);
> +
> +	memset(matrix_mdev->crycb.apm, 0, masksz);
> +	memset(matrix_mdev->crycb.apm, 0, masksz);

I guess you wanted to zero out aqm here (and not apm again)!

> +	memcpy(matrix_mdev->crycb.adm, matrix_mdev->matrix.adm, masksz);