On Tue, 2012-01-31 at 19:40 +0200, Michael S. Tsirkin wrote:
> On Sat, Jan 28, 2012 at 07:22:09AM -0700, Alex Williamson wrote:
> > Per the PCI spec, all vectors should be masked at handoff.
> >
> > Signed-off-by: Alex Williamson <[email protected]>
> > ---
> >
> > hw/device-assignment.c | 20 +++++++++++++++++++-
> > 1 files changed, 19 insertions(+), 1 deletions(-)
> >
> > diff --git a/hw/device-assignment.c b/hw/device-assignment.c
> > index af614d3..6efa219 100644
> > --- a/hw/device-assignment.c
> > +++ b/hw/device-assignment.c
> > @@ -1462,6 +1462,22 @@ static const MemoryRegionOps msix_mmio_ops = {
> > },
> > };
> >
> > +static void msix_reset(AssignedDevice *dev)
> > +{
> > + MSIXTableEntry *entry;
> > + int i;
> > +
> > + if (!dev->msix_table) {
> > + return;
> > + }
> > +
> > + memset(dev->msix_table, 0, 0x1000);
> > +
> > + for (i = 0, entry = dev->msix_table; i < dev->msix_max; i++, entry++) {
> > + entry->ctrl = 0x1; /* Masked */
>
> This is broken for BE hosts.
Show me a BE host that even remotely works with this device assignment
implementation. Thanks,
Alex
> > + }
> > +}
> > +
> > static int assigned_dev_register_msix_mmio(AssignedDevice *dev)
> > {
> > dev->msix_table = mmap(NULL, 0x1000, PROT_READ|PROT_WRITE,
> > @@ -1470,7 +1486,9 @@ static int
> > assigned_dev_register_msix_mmio(AssignedDevice *dev)
> > fprintf(stderr, "fail allocate msix_table! %s\n", strerror(errno));
> > return -EFAULT;
> > }
> > - memset(dev->msix_table, 0, 0x1000);
> > +
> > + msix_reset(dev);
> > +
> > memory_region_init_io(&dev->mmio, &msix_mmio_ops, dev,
> > "assigned-dev-msix", MSIX_PAGE_SIZE);
> > return 0;
> >
> > --
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