On 30.11.2016 10:02, Gaohaifeng (A) wrote:
> I think we should pass it. Two reasons:
> 1. in none hotplug, we will pass it. We can see from libvirt function qemuBuildVhostuserCommandLine, it will pass queue num as vhostfdSize
> 2. If we don't pass vectors, qemu will use default value. Now default value is 3, (qemu codes: DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 3))
> So that qemu init msix table with 3 vectors(qemu function: msix_init_exclusive_bar), this will cause Guest can only use 3 interrupts at most. Actually, it use
> Two, one for config one for other virtqueues.
I see. Do you want to provide a patch or should I do that?
Michal
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