On Tue, Jan 31, 2012 at 12:07:39PM -0700, Alex Williamson wrote:
> 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
I don't get it. Yes lots of cleanup is needed but why add more broken
code?
> > > + }
> > > +}
> > > +
> > > 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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>
>
>
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