From: Cornelia Huck <cohuck@redhat.com>
To: Pierre Morel <pmorel@linux.vnet.ibm.com>
Cc: Tony Krowiak <akrowiak@linux.vnet.ibm.com>,
linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org,
kvm@vger.kernel.org, freude@de.ibm.com, schwidefsky@de.ibm.com,
heiko.carstens@de.ibm.com, borntraeger@de.ibm.com,
kwankhede@nvidia.com, bjsdjshi@linux.vnet.ibm.com,
pbonzini@redhat.com, alex.williamson@redhat.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 v3 11/14] s390: vfio-ap: sysfs interface to view matrix mdev matrix
Date: Tue, 27 Mar 2018 13:19:16 +0200 [thread overview]
Message-ID: <20180327131916.44f285bd.cohuck@redhat.com> (raw)
In-Reply-To: <fee58106-a481-aaf8-7fb6-8d51c4b7e906@linux.vnet.ibm.com>
On Thu, 15 Mar 2018 10:42:33 +0100
Pierre Morel <pmorel@linux.vnet.ibm.com> wrote:
> On 14/03/2018 19:25, 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:
> >
> > cat matrix
> >
> > Signed-off-by: Tony Krowiak <akrowiak@linux.vnet.ibm.com>
> > ---
> > drivers/s390/crypto/vfio_ap_ops.c | 39 +++++++++++++++++++++++++++++++++++++
> > 1 files changed, 39 insertions(+), 0 deletions(-)
> >
> > diff --git a/drivers/s390/crypto/vfio_ap_ops.c b/drivers/s390/crypto/vfio_ap_ops.c
> > index 461d450..04f7a92 100644
> > --- a/drivers/s390/crypto/vfio_ap_ops.c
> > +++ b/drivers/s390/crypto/vfio_ap_ops.c
> > @@ -692,6 +692,44 @@ 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;
> > + int nchars = 0;
> > + int n;
> > +
> > + n = sprintf(bufpos, "ADAPTER.DOMAIN\n");
>
> For easy parsing it is better to only report the interesting data
> and let a user space utility make fancy presentation.
+1. Attributes should normally be simple, one-value things.
>
> > + bufpos += n;
> > + nchars += n;
> > +
> > + n = sprintf(bufpos, "--------------\n");
> > + bufpos += n;
> > + nchars += n;
> > +
> > + for_each_set_bit_inv(apid, matrix_mdev->matrix->apm,
> > + matrix_mdev->matrix->apm_max) {
> > + n = sprintf(bufpos, "%02lx\n", apid);
> > + bufpos += n;
> > + nchars += n;
> > +
> > + for_each_set_bit_inv(apqi, matrix_mdev->matrix->aqm,
> > + matrix_mdev->matrix->aqm_max) {
> > + 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,
> > @@ -700,6 +738,7 @@ 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,
> > };
> >
>
next prev parent reply other threads:[~2018-03-27 11:19 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-14 18:25 [PATCH v3 00/14] s390: vfio-ap: guest dedicated crypto adapters Tony Krowiak
2018-03-14 18:25 ` [PATCH v3 01/14] KVM: s390: refactor crypto initialization Tony Krowiak
2018-03-15 12:26 ` Pierre Morel
2018-03-15 14:48 ` Tony Krowiak
2018-03-15 14:55 ` Pierre Morel
2018-03-26 8:44 ` Cornelia Huck
2018-03-29 18:57 ` Tony Krowiak
2018-04-03 11:26 ` Cornelia Huck
2018-04-05 10:42 ` Christian Borntraeger
2018-04-05 10:45 ` Christian Borntraeger
2018-04-05 13:16 ` Tony Krowiak
2018-03-14 18:25 ` [PATCH v3 02/14] s390: zcrypt: externalize AP instructions available function Tony Krowiak
2018-03-14 18:25 ` [PATCH v3 03/14] KVM: s390: CPU model support for AP virtualization Tony Krowiak
2018-03-27 10:59 ` Cornelia Huck
2018-03-27 11:22 ` Pierre Morel
2018-03-27 11:30 ` Cornelia Huck
2018-03-14 18:25 ` [PATCH v3 04/14] KVM: s390: device attribute to set AP interpretive execution Tony Krowiak
2018-03-14 21:57 ` Halil Pasic
2018-03-15 13:00 ` Pierre Morel
2018-03-15 15:26 ` Tony Krowiak
2018-03-15 15:45 ` Pierre Morel
2018-03-15 17:21 ` Tony Krowiak
2018-03-15 17:56 ` Pierre Morel
2018-03-15 23:39 ` Tony Krowiak
2018-03-16 7:51 ` Pierre Morel
2018-03-16 16:09 ` Tony Krowiak
2018-03-20 17:58 ` Tony Krowiak
2018-03-20 22:48 ` Halil Pasic
2018-04-02 18:55 ` Tony Krowiak
2018-03-15 15:23 ` Tony Krowiak
2018-03-15 16:00 ` Pierre Morel
2018-03-15 23:37 ` Tony Krowiak
2018-03-15 16:25 ` Halil Pasic
2018-03-14 18:25 ` [PATCH v3 05/14] s390: vfio-ap: base implementation of VFIO AP device driver Tony Krowiak
2018-03-15 13:25 ` Pierre Morel
2018-03-15 17:25 ` Tony Krowiak
2018-03-27 11:17 ` Cornelia Huck
2018-03-27 14:45 ` Pierre Morel
2018-04-03 9:56 ` Cornelia Huck
2018-04-03 10:57 ` Cornelia Huck
2018-04-03 13:02 ` Tony Krowiak
2018-03-14 18:25 ` [PATCH v3 06/14] s390: vfio-ap: register matrix device with VFIO mdev framework Tony Krowiak
2018-03-14 18:25 ` [PATCH v3 07/14] KVM: s390: interfaces to configure/deconfigure guest's AP matrix Tony Krowiak
2018-04-03 11:07 ` Cornelia Huck
2018-04-03 13:17 ` Tony Krowiak
2018-04-03 13:38 ` Cornelia Huck
2018-03-14 18:25 ` [PATCH v3 08/14] s390: vfio-ap: sysfs interfaces to configure adapters Tony Krowiak
2018-04-03 11:10 ` Cornelia Huck
2018-04-03 13:33 ` Tony Krowiak
2018-03-14 18:25 ` [PATCH v3 09/14] s390: vfio-ap: sysfs interfaces to configure domains Tony Krowiak
2018-04-03 11:17 ` Cornelia Huck
[not found] ` <1860430c-df59-6d58-77f9-b36c51595b4b@linux.vnet.ibm.com>
2018-04-03 15:19 ` Cornelia Huck
2018-04-03 15:42 ` Tony Krowiak
2018-03-14 18:25 ` [PATCH v3 10/14] s390: vfio-ap: sysfs interfaces to configure control domains Tony Krowiak
2018-03-14 18:25 ` [PATCH v3 11/14] s390: vfio-ap: sysfs interface to view matrix mdev matrix Tony Krowiak
2018-03-15 9:42 ` Pierre Morel
2018-03-15 14:52 ` Tony Krowiak
2018-03-15 15:35 ` Pierre Morel
2018-03-27 11:19 ` Cornelia Huck [this message]
2018-03-14 18:25 ` [PATCH v3 12/14] KVM: s390: configure the guest's AP devices Tony Krowiak
2018-03-14 18:25 ` [PATCH v3 13/14] s390: vfio-ap: implement VFIO_DEVICE_GET_INFO ioctl Tony Krowiak
2018-03-14 18:25 ` [PATCH v3 14/14] s390: doc: detailed specifications for AP virtualization Tony Krowiak
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