[libvirt] [PATCH] Force FLR on for buggy SR-IOV devices.

Chris Lalancette clalance at redhat.com
Mon Jul 26 14:59:11 UTC 2010

On 07/23/10 - 01:34:23PM, Eric Blake wrote:
> On 07/23/2010 01:21 PM, Chris Lalancette wrote:
> >Some buggy PCI devices actually support FLR, but
> >forget to advertise that fact in their PCI config space.
> >However, Virtual Functions on SR-IOV devices are
> >*required* to support FLR by the spec, so force has_flr
> >on if this is a virtual function.
> >
> >+
> >+    if (virAsprintf(&path, PCI_SYSFS "devices/%s/physfn", dev->name)<  0) {
> Weird spacing around <

Yeah, I think Paolo is right, this might be a thunderbird bug.  It looks OK
in the original patch I sent.

> >+        VIR_ERROR("Failed to allocate memory when checking FLR for device %s",
> >+                  dev->id);
> If this fails, it is likely that other code will run out of memory
> soon, too.  Why not just call the standard git OOM handler here?

I could go either way on this one.  Up until now we only ever returned 0 or
1 from this function, but with the memory allocation, we can also have -1
(for failure).  I guess I'll re-code it to return -1, and then I can use
virOOMError here.

Thanks for the review.

Chris Lalancette

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