Re: [PATCH] qemu-kvm: fix error handling in msix vector add

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On Tue, Jul 28, 2009 at 04:22:36PM +0300, Michael S. Tsirkin wrote:
> On Sat, Jul 25, 2009 at 12:30:52PM -0300, Marcelo Tosatti wrote:
> > On Thu, Jul 23, 2009 at 04:34:13PM +0300, Michael S. Tsirkin wrote:
> > > When adding a vector fails, the used counter should
> > > not be incremented, otherwise on vector change we will
> > > try to update the routing entry.
> > > 
> > > Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx>
> > 
> > Applied, thanks.
> 
> Should I see this in qemu-kvm master?
> It does not seem to be there.

Hum, forgot to push. Will handle it. Sorry for the mess.

> 
> > > ---
> > >  hw/msix.c |   10 ++++++++--
> > >  1 files changed, 8 insertions(+), 2 deletions(-)
> > > 
> > > diff --git a/hw/msix.c b/hw/msix.c
> > > index 5f77dc9..47cbdc7 100644
> > > --- a/hw/msix.c
> > > +++ b/hw/msix.c
> > > @@ -502,13 +502,19 @@ void msix_reset(PCIDevice *dev)
> > >  /* Mark vector as used. */
> > >  int msix_vector_use(PCIDevice *dev, unsigned vector)
> > >  {
> > > +    int ret;
> > >      if (vector >= dev->msix_entries_nr)
> > >          return -EINVAL;
> > > -    if (dev->msix_entry_used[vector]++)
> > > +    if (dev->msix_entry_used[vector]) {
> > >          return 0;
> > > +    }
> > >      if (kvm_enabled() && qemu_kvm_irqchip_in_kernel()) {
> > > -        return kvm_msix_add(dev, vector);
> > > +        ret = kvm_msix_add(dev, vector);
> > > +        if (ret) {
> > > +            return ret;
> > > +        }
> > >      }
> > > +    ++dev->msix_entry_used[vector];
> > >      return 0;
> > >  }
> > >  
> > > -- 
> > > 1.6.2.5
> > > --
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