On Fri, Feb 04 2022, Matthew Rosato <mjrosato@xxxxxxxxxxxxx> 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). To accomplish > this, add a new parameter for airq_iv_create which allows passing an > existing vector to be used instead of allocating a new one. The caller > is responsible for ensuring the vector is pinned in memory as well as for > unpinning the memory when the vector is no longer needed. > > A subsequent patch will use this new parameter for zPCI interpretation. > > Reviewed-by: Pierre Morel <pmorel@xxxxxxxxxxxxx> > Signed-off-by: Matthew Rosato <mjrosato@xxxxxxxxxxxxx> > --- > arch/s390/include/asm/airq.h | 4 +++- > arch/s390/pci/pci_irq.c | 8 ++++---- > drivers/s390/cio/airq.c | 10 +++++++--- > drivers/s390/virtio/virtio_ccw.c | 2 +- > 4 files changed, 15 insertions(+), 9 deletions(-) For virtio-ccw: Acked-by: Cornelia Huck <cohuck@xxxxxxxxxx>
