| Date | Wed, 8 Dec 2021 11:04:49 +0100 | Subject | Re: [PATCH 06/32] s390/airq: allow for airq structure that uses an input vector | From | Thomas Huth <> |
| |
On 07/12/2021 21.57, Matthew Rosato wrote: > When doing device passthrough where interrupts are being forwarded > from host to guest, we wish to use a pinned section of guest memory > as the vector (the same memory used by the guest as the vector). > > Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com> > --- [...] > diff --git a/arch/s390/pci/pci_irq.c b/arch/s390/pci/pci_irq.c > index 880bcd73f11a..dfd4f3276a6d 100644 > --- a/arch/s390/pci/pci_irq.c > +++ b/arch/s390/pci/pci_irq.c [...] > @@ -443,7 +443,7 @@ static int __init zpci_directed_irq_init(void) > zpci_ibv[cpu] = airq_iv_create(cache_line_size() * BITS_PER_BYTE, > AIRQ_IV_DATA | > AIRQ_IV_CACHELINE | > - (!cpu ? AIRQ_IV_ALLOC : 0)); > + (!cpu ? AIRQ_IV_ALLOC : 0), 0);
Nit: Indentation changed
> diff --git a/drivers/s390/virtio/virtio_ccw.c b/drivers/s390/virtio/virtio_ccw.c > index 52c376d15978..ff84f45587be 100644 > --- a/drivers/s390/virtio/virtio_ccw.c > +++ b/drivers/s390/virtio/virtio_ccw.c > @@ -241,7 +241,7 @@ static struct airq_info *new_airq_info(int index) > return NULL; > rwlock_init(&info->lock); > info->aiv = airq_iv_create(VIRTIO_IV_BITS, AIRQ_IV_ALLOC | AIRQ_IV_PTR > - | AIRQ_IV_CACHELINE); > + | AIRQ_IV_CACHELINE, 0);
dito
> if (!info->aiv) { > kfree(info); > return NULL; >
Thomas
|