search for: scsw_stctl_alert_status

...9 insertions(+), 2 deletions(-) diff --git a/drivers/s390/kvm/virtio_ccw.c b/drivers/s390/kvm/virtio_ccw.c index 779dc51..d6c7aba 100644 --- a/drivers/s390/kvm/virtio_ccw.c +++ b/drivers/s390/kvm/virtio_ccw.c @@ -639,8 +639,15 @@ static void virtio_ccw_int_handler(struct ccw_device *cdev, (SCSW_STCTL_ALERT_STATUS | SCSW_STCTL_STATUS_PEND))) { /* OK */ } - if (irb_is_error(irb)) - vcdev->err = -EIO; /* XXX - use real error */ + if (irb_is_error(irb)) { + /* Command reject? */ + if ((scsw_dstat(&irb->scsw) & DEV_STAT_UNIT_CHECK) && + (irb->ecw[0] & SNS0_CMD_REJECT)) +...

...9 insertions(+), 2 deletions(-) diff --git a/drivers/s390/kvm/virtio_ccw.c b/drivers/s390/kvm/virtio_ccw.c index 779dc51..d6c7aba 100644 --- a/drivers/s390/kvm/virtio_ccw.c +++ b/drivers/s390/kvm/virtio_ccw.c @@ -639,8 +639,15 @@ static void virtio_ccw_int_handler(struct ccw_device *cdev, (SCSW_STCTL_ALERT_STATUS | SCSW_STCTL_STATUS_PEND))) { /* OK */ } - if (irb_is_error(irb)) - vcdev->err = -EIO; /* XXX - use real error */ + if (irb_is_error(irb)) { + /* Command reject? */ + if ((scsw_dstat(&irb->scsw) & DEV_STAT_UNIT_CHECK) && + (irb->ecw[0] & SNS0_CMD_REJECT)) +...

Hi, next version of the guest exploitation of virtio-ccw adapter interrupts. Changes from the last version: - adapt to latest kvm-next - changed housekeeping for indicator locations: we now use cacheline-sized and aligned areas - minor tweaks Cornelia Huck (2): KVM: s390: virtio-ccw: Handle command rejects. KVM: s390: virtio-ccw adapter interrupt support. arch/s390/include/asm/irq.h

Hi, next version of the guest exploitation of virtio-ccw adapter interrupts. Changes from the last version: - adapt to latest kvm-next - changed housekeeping for indicator locations: we now use cacheline-sized and aligned areas - minor tweaks Cornelia Huck (2): KVM: s390: virtio-ccw: Handle command rejects. KVM: s390: virtio-ccw adapter interrupt support. arch/s390/include/asm/irq.h

...cdev) * - fast notification was requested (primary status) * - unsolicited interrupts */ - stctl = scsw_stctl(&cdev->private->irb.scsw); + stctl = scsw_stctl(&cdev->private->dma_area->irb.scsw); ending_status = (stctl & SCSW_STCTL_SEC_STATUS) || (stctl == (SCSW_STCTL_ALERT_STATUS | SCSW_STCTL_STATUS_PEND)) || (stctl == SCSW_STCTL_STATUS_PEND); @@ -735,9 +735,9 @@ static int ccw_device_call_handler(struct ccw_device *cdev) if (cdev->handler) cdev->handler(cdev, cdev->private->intparm, - &cdev->private->irb); + &cdev->pri...

...cdev) * - fast notification was requested (primary status) * - unsolicited interrupts */ - stctl = scsw_stctl(&cdev->private->irb.scsw); + stctl = scsw_stctl(&cdev->private->dma_area->irb.scsw); ending_status = (stctl & SCSW_STCTL_SEC_STATUS) || (stctl == (SCSW_STCTL_ALERT_STATUS | SCSW_STCTL_STATUS_PEND)) || (stctl == SCSW_STCTL_STATUS_PEND); @@ -735,9 +747,9 @@ static int ccw_device_call_handler(struct ccw_device *cdev) if (cdev->handler) cdev->handler(cdev, cdev->private->intparm, - &cdev->private->irb); + &cdev->pri...

...cdev) * - fast notification was requested (primary status) * - unsolicited interrupts */ - stctl = scsw_stctl(&cdev->private->irb.scsw); + stctl = scsw_stctl(&cdev->private->dma_area->irb.scsw); ending_status = (stctl & SCSW_STCTL_SEC_STATUS) || (stctl == (SCSW_STCTL_ALERT_STATUS | SCSW_STCTL_STATUS_PEND)) || (stctl == SCSW_STCTL_STATUS_PEND); @@ -735,9 +743,9 @@ static int ccw_device_call_handler(struct ccw_device *cdev) if (cdev->handler) cdev->handler(cdev, cdev->private->intparm, - &cdev->private->irb); + &cdev->pri...

...cdev) * - fast notification was requested (primary status) * - unsolicited interrupts */ - stctl = scsw_stctl(&cdev->private->irb.scsw); + stctl = scsw_stctl(&cdev->private->dma_area->irb.scsw); ending_status = (stctl & SCSW_STCTL_SEC_STATUS) || (stctl == (SCSW_STCTL_ALERT_STATUS | SCSW_STCTL_STATUS_PEND)) || (stctl == SCSW_STCTL_STATUS_PEND); @@ -735,9 +743,9 @@ static int ccw_device_call_handler(struct ccw_device *cdev) if (cdev->handler) cdev->handler(cdev, cdev->private->intparm, - &cdev->private->irb); + &cdev->pri...

Hi, here's the guest driver support for adapter interrupts in virtio-ccw. We use one summary indicator per page of indicators. For each device, we try to find a space in an indicator where all of its virtqueues fit. Locking probably needs some more love, but it seems to work fine so far. Cornelia Huck (2): KVM: s390: virtio-ccw: Handle command rejects. KVM: s390: virtio-ccw adapter

Hi, here's the guest driver support for adapter interrupts in virtio-ccw. We use one summary indicator per page of indicators. For each device, we try to find a space in an indicator where all of its virtqueues fit. Locking probably needs some more love, but it seems to work fine so far. Cornelia Huck (2): KVM: s390: virtio-ccw: Handle command rejects. KVM: s390: virtio-ccw adapter

Enhanced virtualization protection technology may require the use of bounce buffers for I/O. While support for this was built into the virtio core, virtio-ccw wasn't changed accordingly. Some background on technology (not part of this series) and the terminology used. * Protected Virtualization (PV): Protected Virtualization guarantees, that non-shared memory of a guest that operates in PV

Enhanced virtualization protection technology may require the use of bounce buffers for I/O. While support for this was built into the virtio core, virtio-ccw wasn't changed accordingly. Some background on technology (not part of this series) and the terminology used. * Protected Virtualization (PV): Protected Virtualization guarantees, that non-shared memory of a guest that operates in PV

Enhanced virtualization protection technology may require the use of bounce buffers for I/O. While support for this was built into the virtio core, virtio-ccw wasn't changed accordingly. Some background on technology (not part of this series) and the terminology used. * Protected Virtualization (PV): Protected Virtualization guarantees, that non-shared memory of a guest that operates in PV

Enhanced virtualization protection technology may require the use of bounce buffers for I/O. While support for this was built into the virtio core, virtio-ccw wasn't changed accordingly. Some background on technology (not part of this series) and the terminology used. * Protected Virtualization (PV): Protected Virtualization guarantees, that non-shared memory of a guest that operates in PV

Enhanced virtualization protection technology may require the use of bounce buffers for I/O. While support for this was built into the virtio core, virtio-ccw wasn't changed accordingly. Some background on technology (not part of this series) and the terminology used. * Protected Virtualization (PV): Protected Virtualization guarantees, that non-shared memory of a guest that operates in PV

Enhanced virtualization protection technology may require the use of bounce buffers for I/O. While support for this was built into the virtio core, virtio-ccw wasn't changed accordingly. Some background on technology (not part of this series) and the terminology used. * Protected Virtualization (PV): Protected Virtualization guarantees, that non-shared memory of a guest that operates in PV

Enhanced virtualization protection technology may require the use of bounce buffers for I/O. While support for this was built into the virtio core, virtio-ccw wasn't changed accordingly. Some background on technology (not part of this series) and the terminology used. * Protected Virtualization (PV): Protected Virtualization guarantees, that non-shared memory of a guest that operates in PV

Enhanced virtualization protection technology may require the use of bounce buffers for I/O. While support for this was built into the virtio core, virtio-ccw wasn't changed accordingly. Some background on technology (not part of this series) and the terminology used. * Protected Virtualization (PV): Protected Virtualization guarantees, that non-shared memory of a guest that operates in PV