diff options
| author |   Rusty Russell <rusty@rustcorp.com.au> | 2009-06-12 22:27:09 -0600 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2009-06-12 22:27:10 +0930 |
| commit | df60aeef4f4fe0645d9a195a7689005520422de5 (patch) | |
| tree | 3cfa3c4a986436c8accd5f0a57d5a6f70f1b7965 /include/linux/lguest_launcher.h | |
| parent | eventfd: export eventfd_signal and eventfd_fget for lguest (diff) | |
| download | linux-dev-df60aeef4f4fe0645d9a195a7689005520422de5.tar.xz linux-dev-df60aeef4f4fe0645d9a195a7689005520422de5.zip | |
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>
Diffstat (limited to 'include/linux/lguest_launcher.h')
| -rw-r--r-- | include/linux/lguest_launcher.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/lguest_launcher.h b/include/linux/lguest_launcher.h index a53407a4165c..9de964b90586 100644 --- a/include/linux/lguest_launcher.h +++ b/include/linux/lguest_launcher.h @@ -58,6 +58,7 @@ enum lguest_req LHREQ_GETDMA, /* No longer used */ LHREQ_IRQ, /* + irq */ LHREQ_BREAK, /* + on/off flag (on blocks until someone does off) */ + LHREQ_EVENTFD, /* + address, fd. */ }; /* The alignment to use between consumer and producer parts of vring. |