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Code Issues Releases Wiki Activity

s390/vfio_ap: increase max wait time for reset verification

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Increase the maximum time to wait for verification of a queue reset
operation to 200ms.

Signed-off-by: Tony Krowiak <akrowiak@linux.ibm.com>
Reviewed-by: Jason J. Herne <jjherne@linux.ibm.com>
Reviewed-by: Harald Freudenberger <freude@linux.ibm.com>
Link: https://lore.kernel.org/r/20230118203111.529766-7-akrowiak@linux.ibm.com
Signed-off-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
This commit is contained in:
Tony Krowiak 2023-01-18 15:31:11 -05:00 committed by Heiko Carstens
parent 51d4d98770
commit 7cb7636a1a
1 changed files with 7 additions and 3 deletions
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10
drivers/s390/crypto/vfio_ap_ops.c
View file

@ -30,6 +30,9 @@
#define AP_QUEUE_UNASSIGNED "unassigned"
#define AP_QUEUE_IN_USE "in use"
#define MAX_RESET_CHECK_WAIT 200 /* Sleep max 200ms for reset check */
#define AP_RESET_INTERVAL 20 /* Reset sleep interval (20ms) */
static int vfio_ap_mdev_reset_queues(struct ap_queue_table *qtable);
static struct vfio_ap_queue *vfio_ap_find_queue(int apqn);
static const struct vfio_device_ops vfio_ap_matrix_dev_ops;
@ -1626,11 +1629,12 @@ static int apq_status_check(int apqn, struct ap_queue_status *status)
static int apq_reset_check(struct vfio_ap_queue *q)
{
int iters = 2, ret;
int ret;
int iters = MAX_RESET_CHECK_WAIT / AP_RESET_INTERVAL;
struct ap_queue_status status;
while (iters--) {
msleep(20);
for (; iters > 0; iters--) {
msleep(AP_RESET_INTERVAL);
status = ap_tapq(q->apqn, NULL);
ret = apq_status_check(q->apqn, &status);
if (ret != -EBUSY)