tree 3cfa3c4a986436c8accd5f0a57d5a6f70f1b7965
parent 5718607bb670c721f45f0dbb1cc7d6c64969aab1
author Rusty Russell <rusty@rustcorp.com.au> 1244867229 -0600
committer Rusty Russell <rusty@rustcorp.com.au> 1244811430 +0930

lguest: use eventfds for device notification

Currently, when a Guest wants to perform I/O it calls LHCALL_NOTIFY with
an address: the main Launcher process returns with this address, and figures
out what device to run.

A far nicer model is to let processes bind an eventfd to an address: if we
find one, we simply signal the eventfd.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Davide Libenzi <davidel@xmailserver.org>