From: Tony Krowiak <akrowiak@linux.vnet.ibm.com>
To: 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,
akrowiak@linux.vnet.ibm.com, frankja@linux.ibm.com,
Tony Krowiak <akrowiak@linux.ibm.com>
Subject: [PATCH v11 09/26] s390: vfio-ap: sysfs interface to view matrix mdev matrix
Date: Tue, 25 Sep 2018 19:16:24 -0400 [thread overview]
Message-ID: <20180925231641.4954-10-akrowiak@linux.vnet.ibm.com> (raw)
In-Reply-To: <20180925231641.4954-1-akrowiak@linux.vnet.ibm.com>
From: Tony Krowiak <akrowiak@linux.ibm.com>
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
Below are examples of the output from the above command:
Example 1: Adapters and domains assigned
Assignments:
Adapters 5 and 6
Domains 4 and 71 (0x47)
Output
05.0004
05.0047
06.0004
06.0047
Examples 2: Only adapters assigned
Assignments:
Adapters 5 and 6
Output:
05.
06.
Examples 3: Only domains assigned
Assignments:
Domains 4 and 71 (0x47)
Output:
.0004
.0047
Signed-off-by: Tony Krowiak <akrowiak@linux.ibm.com>
Reviewed-by: Halil Pasic <pasic@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Tested-by: Michael Mueller <mimu@linux.ibm.com>
Tested-by: Farhan Ali <alifm@linux.ibm.com>
Tested-by: Pierre Morel <pmorel@linux.ibm.com>
---
drivers/s390/crypto/vfio_ap_ops.c | 51 +++++++++++++++++++++++++++++++
1 file changed, 51 insertions(+)
diff --git a/drivers/s390/crypto/vfio_ap_ops.c b/drivers/s390/crypto/vfio_ap_ops.c
index cd5a2aa7a51a..61a5fa7ad40d 100644
--- a/drivers/s390/crypto/vfio_ap_ops.c
+++ b/drivers/s390/crypto/vfio_ap_ops.c
@@ -624,6 +624,56 @@ 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 apid1;
+ unsigned long apqi1;
+ unsigned long napm_bits = matrix_mdev->matrix.apm_max + 1;
+ unsigned long naqm_bits = matrix_mdev->matrix.aqm_max + 1;
+ int nchars = 0;
+ int n;
+
+ apid1 = find_first_bit_inv(matrix_mdev->matrix.apm, napm_bits);
+ apqi1 = find_first_bit_inv(matrix_mdev->matrix.aqm, naqm_bits);
+
+ mutex_lock(&matrix_dev->lock);
+
+ if ((apid1 < napm_bits) && (apqi1 < naqm_bits)) {
+ for_each_set_bit_inv(apid, matrix_mdev->matrix.apm, napm_bits) {
+ for_each_set_bit_inv(apqi, matrix_mdev->matrix.aqm,
+ naqm_bits) {
+ n = sprintf(bufpos, "%02lx.%04lx\n", apid,
+ apqi);
+ bufpos += n;
+ nchars += n;
+ }
+ }
+ } else if (apid1 < napm_bits) {
+ for_each_set_bit_inv(apid, matrix_mdev->matrix.apm, napm_bits) {
+ n = sprintf(bufpos, "%02lx.\n", apid);
+ bufpos += n;
+ nchars += n;
+ }
+ } else if (apqi1 < naqm_bits) {
+ for_each_set_bit_inv(apqi, matrix_mdev->matrix.aqm, naqm_bits) {
+ n = sprintf(bufpos, ".%04lx\n", apqi);
+ bufpos += n;
+ nchars += n;
+ }
+ }
+
+ mutex_unlock(&matrix_dev->lock);
+
+ return nchars;
+}
+DEVICE_ATTR_RO(matrix);
+
static struct attribute *vfio_ap_mdev_attrs[] = {
&dev_attr_assign_adapter.attr,
&dev_attr_unassign_adapter.attr,
@@ -632,6 +682,7 @@ static struct attribute *vfio_ap_mdev_attrs[] = {
&dev_attr_assign_control_domain.attr,
&dev_attr_unassign_control_domain.attr,
&dev_attr_control_domains.attr,
+ &dev_attr_matrix.attr,
NULL,
};
--
2.19.0.221.g150f307
next prev parent reply other threads:[~2018-09-25 23:17 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-25 23:16 [PATCH v11 00/26] guest dedicated crypto adapters Tony Krowiak
2018-09-25 23:16 ` [PATCH v11 01/26] KVM: s390: vsie: simulate VCPU SIE entry/exit Tony Krowiak
2018-09-25 23:16 ` [PATCH v11 02/26] KVM: s390: introduce and use KVM_REQ_VSIE_RESTART Tony Krowiak
2018-09-25 23:16 ` [PATCH v11 03/26] KVM: s390: refactor crypto initialization Tony Krowiak
2018-09-26 13:07 ` Cornelia Huck
2018-09-25 23:16 ` [PATCH v11 04/26] s390: vfio-ap: base implementation of VFIO AP device driver Tony Krowiak
2018-09-26 7:19 ` David Hildenbrand
2018-09-26 13:10 ` Cornelia Huck
2018-09-25 23:16 ` [PATCH v11 05/26] s390: vfio-ap: register matrix device with VFIO mdev framework Tony Krowiak
2018-09-25 23:16 ` [PATCH v11 06/26] s390: vfio-ap: sysfs interfaces to configure adapters Tony Krowiak
2018-09-26 13:19 ` Cornelia Huck
2018-09-25 23:16 ` [PATCH v11 07/26] s390: vfio-ap: sysfs interfaces to configure domains Tony Krowiak
2018-09-25 23:16 ` [PATCH v11 08/26] s390: vfio-ap: sysfs interfaces to configure control domains Tony Krowiak
2018-09-25 23:16 ` Tony Krowiak [this message]
2018-09-25 23:16 ` [PATCH v11 10/26] KVM: s390: interfaces to clear CRYCB masks Tony Krowiak
2018-09-26 13:21 ` Cornelia Huck
2018-09-25 23:16 ` [PATCH v11 11/26] s390: vfio-ap: implement mediated device open callback Tony Krowiak
2018-09-28 10:14 ` Cornelia Huck
2018-09-28 13:02 ` Tony Krowiak
2018-09-28 13:33 ` [FIXUP v11] fixup! " Tony Krowiak
2018-09-28 13:34 ` Christian Borntraeger
2018-09-28 13:35 ` Cornelia Huck
2018-09-28 13:41 ` Halil Pasic
2018-09-28 13:42 ` Christian Borntraeger
2018-09-28 13:46 ` Cornelia Huck
2018-09-28 13:41 ` Christian Borntraeger
2018-09-25 23:16 ` [PATCH v11 12/26] s390: vfio-ap: implement VFIO_DEVICE_GET_INFO ioctl Tony Krowiak
2018-09-25 23:16 ` [PATCH v11 13/26] s390: vfio-ap: zeroize the AP queues Tony Krowiak
2018-09-26 13:38 ` Cornelia Huck
2018-09-26 18:58 ` Christian Borntraeger
2018-09-27 7:04 ` Cornelia Huck
2018-09-25 23:16 ` [PATCH v11 14/26] s390: vfio-ap: implement VFIO_DEVICE_RESET ioctl Tony Krowiak
2018-09-25 23:16 ` [PATCH v11 15/26] KVM: s390: Clear Crypto Control Block when using vSIE Tony Krowiak
2018-09-26 7:16 ` David Hildenbrand
2018-09-25 23:16 ` [PATCH v11 16/26] KVM: s390: vsie: Do the CRYCB validation first Tony Krowiak
2018-09-25 23:16 ` [PATCH v11 17/26] KVM: s390: vsie: Make use of CRYCB FORMAT2 clear Tony Krowiak
2018-09-25 23:16 ` [PATCH v11 18/26] KVM: s390: vsie: Allow CRYCB FORMAT-2 Tony Krowiak
2018-09-25 23:16 ` [PATCH v11 19/26] KVM: s390: vsie: allow CRYCB FORMAT-1 Tony Krowiak
2018-09-25 23:16 ` [PATCH v11 20/26] KVM: s390: vsie: allow CRYCB FORMAT-0 Tony Krowiak
2018-09-25 23:16 ` [PATCH v11 21/26] KVM: s390: vsie: allow guest FORMAT-0 CRYCB on host FORMAT-1 Tony Krowiak
2018-09-25 23:16 ` [PATCH v11 22/26] KVM: s390: vsie: allow guest FORMAT-1 CRYCB on host FORMAT-2 Tony Krowiak
2018-09-25 23:16 ` [PATCH v11 23/26] KVM: s390: vsie: allow guest FORMAT-0 " Tony Krowiak
2018-09-25 23:16 ` [PATCH v11 24/26] KVM: s390: device attrs to enable/disable AP interpretation Tony Krowiak
2018-09-26 7:14 ` David Hildenbrand
2018-09-26 13:44 ` Cornelia Huck
2018-09-25 23:16 ` [PATCH v11 25/26] KVM: s390: CPU model support for AP virtualization Tony Krowiak
2018-09-26 7:15 ` David Hildenbrand
2018-09-26 7:28 ` Christian Borntraeger
2018-09-26 13:39 ` Cornelia Huck
2018-09-25 23:16 ` [PATCH v11 26/26] s390: doc: detailed specifications " Tony Krowiak
2018-09-26 22:42 ` Alex Williamson
2018-09-27 6:53 ` Harald Freudenberger
2018-09-27 11:29 ` Halil Pasic
2018-09-27 11:51 ` Cornelia Huck
2018-09-27 11:59 ` Christian Borntraeger
2018-09-27 13:12 ` Tony Krowiak
2018-09-27 13:56 ` Tony Krowiak
2018-09-27 14:21 ` Tony Krowiak
2018-09-27 19:19 ` Tony Krowiak
2018-09-28 7:20 ` Christian Borntraeger
2018-09-28 11:42 ` Christian Borntraeger
2018-09-28 13:43 ` [FIXUP v9] fixup! fixup! " Tony Krowiak
2018-09-28 13:45 ` Christian Borntraeger
2018-09-26 12:30 ` [PATCH v11 00/26] guest dedicated crypto adapters Christian Borntraeger
2018-09-28 10:16 ` Cornelia Huck
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