Messages in this thread | | | Date | Mon, 16 May 2022 12:18:34 +0200 | Subject | Re: [PATCH v7 06/22] s390/airq: allow for airq structure that uses an input vector | From | Thomas Huth <> |
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On 13/05/2022 21.14, 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). 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@linux.ibm.com> > Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com> > Acked-by: Cornelia Huck <cohuck@redhat.com> > Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com> > --- > 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(-)
Reviewed-by: Thomas Huth <thuth@redhat.com>
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