From: Pierre Morel <pmorel@linux.ibm.com>
To: Tony Krowiak <akrowiak@linux.vnet.ibm.com>,
linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org,
kvm@vger.kernel.org
Cc: freude@de.ibm.com, schwidefsky@de.ibm.com,
heiko.carstens@de.ibm.com, borntraeger@de.ibm.com,
cohuck@redhat.com, kwankhede@nvidia.com,
bjsdjshi@linux.vnet.ibm.com, pbonzini@redhat.com,
alex.williamson@redhat.com, pmorel@linux.vnet.ibm.com,
alifm@linux.vnet.ibm.com, mjrosato@linux.vnet.ibm.com,
jjherne@linux.vnet.ibm.com, thuth@redhat.com,
pasic@linux.vnet.ibm.com, berrange@redhat.com,
fiuczy@linux.vnet.ibm.com, buendgen@de.ibm.com
Subject: Re: [PATCH v5 10/13] s390: vfio-ap: sysfs interface to view matrix mdev matrix
Date: Wed, 16 May 2018 09:55:27 +0200 [thread overview]
Message-ID: <a6bba129-8a3c-a848-65aa-b67816bf2d25@linux.ibm.com> (raw)
In-Reply-To: <1525705912-12815-11-git-send-email-akrowiak@linux.vnet.ibm.com>
On 07/05/2018 17:11, Tony Krowiak wrote:
> Provides a sysfs interface to view the AP matrix configured for the
> mediated matrix device.
>
> The relevant sysfs structures are:
>
> /sys/devices/vfio_ap
> ... [matrix]
> ...... [mdev_supported_types]
> ......... [vfio_ap-passthrough]
> ............ [devices]
> ...............[$uuid]
> .................. matrix
>
> To view the matrix configured for the mediated matrix device,
> print the matrix file:
This is the configured matrix, not the one used by the guest.
Nothing in the patches protect against binding a queue and assigning
a new AP when the guest runs.
The card and queue will be showed by this entry.
>
> cat matrix
>
> Signed-off-by: Tony Krowiak <akrowiak@linux.vnet.ibm.com>
> ---
> drivers/s390/crypto/vfio_ap_ops.c | 31 +++++++++++++++++++++++++++++++
> 1 files changed, 31 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/s390/crypto/vfio_ap_ops.c b/drivers/s390/crypto/vfio_ap_ops.c
> index 755be1d..81e03b8 100644
> --- a/drivers/s390/crypto/vfio_ap_ops.c
> +++ b/drivers/s390/crypto/vfio_ap_ops.c
> @@ -716,6 +716,36 @@ static ssize_t control_domains_show(struct device *dev,
> }
> DEVICE_ATTR_RO(control_domains);
>
> +static ssize_t matrix_show(struct device *dev, struct device_attribute *attr,
> + char *buf)
> +{
> + struct mdev_device *mdev = mdev_from_dev(dev);
> + struct ap_matrix_mdev *matrix_mdev = mdev_get_drvdata(mdev);
> + char *bufpos = buf;
> + unsigned long apid;
> + unsigned long apqi;
> + unsigned long napm = matrix_mdev->matrix.apm_max + 1;
> + unsigned long naqm = matrix_mdev->matrix.aqm_max + 1;
> + int nchars = 0;
> + int n;
> +
> + for_each_set_bit_inv(apid, matrix_mdev->matrix.apm, napm) {
> + n = sprintf(bufpos, "%02lx\n", apid);
> + bufpos += n;
> + nchars += n;
> +
> + for_each_set_bit_inv(apqi, matrix_mdev->matrix.aqm, naqm) {
> + n = sprintf(bufpos, "%02lx.%04lx\n", apid, apqi);
> + bufpos += n;
> + nchars += n;
> + }
> + }
> +
> + return nchars;
> +}
> +DEVICE_ATTR_RO(matrix);
> +
> +
> static struct attribute *vfio_ap_mdev_attrs[] = {
> &dev_attr_assign_adapter.attr,
> &dev_attr_unassign_adapter.attr,
> @@ -724,6 +754,7 @@ static ssize_t control_domains_show(struct device *dev,
> &dev_attr_assign_control_domain.attr,
> &dev_attr_unassign_control_domain.attr,
> &dev_attr_control_domains.attr,
> + &dev_attr_matrix.attr,
> NULL,
> };
>
--
Pierre Morel
Linux/KVM/QEMU in Böblingen - Germany
next prev parent reply other threads:[~2018-05-16 8:11 UTC|newest]
Thread overview: 92+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-07 15:11 [PATCH v5 00/13] s390: vfio-ap: guest dedicated crypto adapters Tony Krowiak
2018-05-07 15:11 ` [PATCH v5 01/13] KVM: s390: Interface to test whether APXA installed Tony Krowiak
2018-05-16 10:21 ` Cornelia Huck
2018-05-16 10:45 ` Tony Krowiak
2018-05-17 9:11 ` Harald Freudenberger
2018-05-17 9:44 ` Cornelia Huck
2018-05-07 15:11 ` [PATCH v5 02/13] KVM: s390: refactor crypto initialization Tony Krowiak
2018-05-16 8:51 ` Pierre Morel
2018-05-16 11:14 ` Tony Krowiak
2018-05-16 12:17 ` Pierre Morel
2018-05-16 12:21 ` Cornelia Huck
2018-05-07 15:11 ` [PATCH v5 03/13] KVM: s390: CPU model support for AP virtualization Tony Krowiak
2018-05-07 15:11 ` [PATCH v5 04/13] s390: vfio-ap: base implementation of VFIO AP device driver Tony Krowiak
2018-05-16 8:21 ` Pierre Morel
2018-05-16 11:29 ` Tony Krowiak
2018-05-16 11:45 ` Tony Krowiak
2018-06-07 8:57 ` Pierre Morel
2018-06-13 7:41 ` Pierre Morel
2018-06-13 7:48 ` Cornelia Huck
2018-06-13 10:54 ` Pierre Morel
2018-06-13 11:14 ` Cornelia Huck
2018-06-13 12:01 ` Pierre Morel
2018-06-13 12:12 ` Cornelia Huck
2018-06-13 12:16 ` Pierre Morel
2018-06-14 13:04 ` Tony Krowiak
2018-05-07 15:11 ` [PATCH v5 05/13] s390: vfio-ap: register matrix device with VFIO mdev framework Tony Krowiak
2018-05-11 17:18 ` Halil Pasic
2018-05-14 19:42 ` Tony Krowiak
2018-05-15 14:17 ` Pierre Morel
2018-05-15 15:16 ` Tony Krowiak
2018-05-15 15:48 ` Halil Pasic
2018-05-15 16:11 ` Tony Krowiak
2018-05-17 7:44 ` Cornelia Huck
2018-05-21 15:13 ` Tony Krowiak
2018-05-22 8:19 ` Cornelia Huck
2018-05-22 21:41 ` Tony Krowiak
2018-05-16 10:42 ` Cornelia Huck
2018-05-16 12:48 ` Tony Krowiak
2018-05-16 12:58 ` Tony Krowiak
2018-05-07 15:11 ` [PATCH v5 06/13] KVM: s390: interfaces to manage guest's AP matrix Tony Krowiak
2018-05-11 16:08 ` Halil Pasic
2018-05-16 14:29 ` Tony Krowiak
2018-05-16 14:41 ` Pierre Morel
2018-05-21 15:23 ` Tony Krowiak
2018-05-15 14:55 ` Pierre Morel
2018-05-15 16:07 ` Tony Krowiak
2018-05-16 7:48 ` Pierre Morel
2018-05-16 13:12 ` Tony Krowiak
2018-05-16 13:15 ` Pierre Morel
2018-05-16 13:48 ` Tony Krowiak
2018-05-18 8:55 ` Pierre Morel
2018-05-23 14:29 ` Tony Krowiak
2018-05-24 7:46 ` Pierre Morel
2018-05-07 15:11 ` [PATCH v5 07/13] s390: vfio-ap: sysfs interfaces to configure adapters Tony Krowiak
2018-05-07 15:11 ` [PATCH v5 08/13] s390: vfio-ap: sysfs interfaces to configure domains Tony Krowiak
2018-05-07 15:11 ` [PATCH v5 09/13] s390: vfio-ap: sysfs interfaces to configure control domains Tony Krowiak
2018-05-07 15:11 ` [PATCH v5 10/13] s390: vfio-ap: sysfs interface to view matrix mdev matrix Tony Krowiak
2018-05-16 7:55 ` Pierre Morel [this message]
2018-05-23 14:38 ` Tony Krowiak
2018-05-24 9:10 ` Pierre Morel
2018-05-30 14:28 ` Tony Krowiak
2018-06-05 12:40 ` Pierre Morel
2018-06-06 14:24 ` Tony Krowiak
2018-06-06 15:10 ` Pierre Morel
2018-06-07 12:53 ` Tony Krowiak
2018-06-07 13:16 ` Halil Pasic
2018-06-07 14:33 ` Tony Krowiak
2018-05-07 15:11 ` [PATCH v5 11/13] KVM: s390: implement mediated device open callback Tony Krowiak
2018-05-16 8:03 ` Pierre Morel
2018-05-23 14:45 ` Tony Krowiak
2018-05-24 9:08 ` Pierre Morel
2018-05-30 14:33 ` Tony Krowiak
2018-06-05 12:19 ` Pierre Morel
2018-06-06 14:28 ` Tony Krowiak
2018-06-06 16:08 ` Pierre Morel
2018-06-06 17:40 ` Pierre Morel
2018-06-07 13:54 ` Tony Krowiak
2018-06-07 15:20 ` Pierre Morel
2018-06-07 16:30 ` Tony Krowiak
2018-06-07 17:15 ` Pierre Morel
2018-06-08 21:59 ` Tony Krowiak
2018-06-11 9:23 ` Pierre Morel
2018-06-11 11:32 ` Halil Pasic
2018-06-11 11:49 ` Janosch Frank
2018-06-11 16:26 ` Tony Krowiak
2018-06-11 16:50 ` Halil Pasic
2018-06-11 16:54 ` Tony Krowiak
2018-06-11 12:50 ` Tony Krowiak
2018-06-11 12:56 ` Tony Krowiak
2018-06-07 13:52 ` Tony Krowiak
2018-05-07 15:11 ` [PATCH v5 12/13] s390: vfio-ap: implement VFIO_DEVICE_GET_INFO ioctl Tony Krowiak
2018-05-07 15:11 ` [PATCH v5 13/13] s390: doc: detailed specifications for AP virtualization Tony Krowiak
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