Re: [Qemu-devel] [PATCH 0/2] virtio-pci: fix abort when fail to allocate ioeventfd

[Avi Kivity]

On 03/16/2012 10:59 AM, Amos Kong wrote:
>
> Can you give some detail about this? I'm not familiar with Memory API.

Well there's a huge amount of detail needed here.  The idea is that
memory_region_add_eventfd() will always work, with or without kvm, and
even if kvm is enabled but we run out of ioeventfds.

One way to do this is to implement core_eventfd_add() in exec.c.  This
is unlikely to be easy however.

>
> btw, can we fix this problem by replacing abort() by a error note?
> virtio-pci will auto fallback to userspace.

But other users will silently break, need to audit all other users of
ioeventfd, for example ivshmem.


-- 
error compiling committee.c: too many arguments to function