diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/lguest.h | 4 | ||||
| -rw-r--r-- | include/linux/lguest_launcher.h | 6 |
2 files changed, 7 insertions, 3 deletions
diff --git a/include/linux/lguest.h b/include/linux/lguest.h index 8beb2913462..175e63f4a8c 100644 --- a/include/linux/lguest.h +++ b/include/linux/lguest.h @@ -12,8 +12,8 @@ #define LG_CLOCK_MAX_DELTA ULONG_MAX /*G:032 The second method of communicating with the Host is to via "struct - * lguest_data". The Guest's very first hypercall is to tell the Host where - * this is, and then the Guest and Host both publish information in it. :*/ + * lguest_data". Once the Guest's initialization hypercall tells the Host where + * this is, the Guest and Host both publish information in it. :*/ struct lguest_data { /* 512 == enabled (same as eflags in normal hardware). The Guest diff --git a/include/linux/lguest_launcher.h b/include/linux/lguest_launcher.h index c41fd483af3..697104da91f 100644 --- a/include/linux/lguest_launcher.h +++ b/include/linux/lguest_launcher.h @@ -10,7 +10,11 @@ * real devices (think of the damage it could do!) we provide virtual devices. * We could emulate a PCI bus with various devices on it, but that is a fairly * complex burden for the Host and suboptimal for the Guest, so we have our own - * "lguest" bus and simple drivers. + * simple lguest bus and we use "virtio" drivers. These drivers need a set of + * routines from us which will actually do the virtual I/O, but they handle all + * the net/block/console stuff themselves. This means that if we want to add + * a new device, we simply need to write a new virtio driver and create support + * for it in the Launcher: this code won't need to change. * * Devices are described by a simplified ID, a status byte, and some "config" * bytes which describe this device's configuration. This is placed by the |