Hi,
On 22/06/2022 15:37, Rahul Singh wrote:
evtchn_alloc_unbound() always allocates the next available port. Static
event channel support for dom0less domains requires allocating a
specified port.
Modify the evtchn_alloc_unbound() to accept the port number as an
argument and allocate the specified port if available. If the port
number argument is zero, the next available port will be allocated.
I haven't yet fully reviewed this series. But I would like to point out
that this opening a security hole (which I thought I had mention before)
that could be exploited by a guest at runtime.
You would need [1] or similar in order to fix the issue. I am wrote
"similar" because the patch could potentially be a problem if you allow
a guest to use FIFO (you may need to allocate a lot of memory to fill
the hole).
Cheers,
[1]
https://xenbits.xen.org/gitweb/?p=people/julieng/xen-unstable.git;a=commit;h=2d89486fcf11216331e58a21b367b8a9be1af725
--
Julien Grall
