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xen: add vkbd support for PV on HVM guests

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Register the vkbd backend even when running as device emulator for HVM
guests: it is useful because it doesn't need a frequent timer like usb.

Check whether the XenInput DisplayState has been set in the initialise
state, rather than the input state.
In case the DisplayState hasn't been set and there is no vfb for this
domain, then set the XenInput DisplayState to the default one.

Changed in v2:

- use qemu_free instead of free;

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Stefano Stabellini 2011-06-24 17:36:11 +01:00 committed by Alexander Graf
parent 5e6b701aba
commit 37cdfcf194
2 changed files with 13 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
hw/xenfb.c
View File

@ -347,13 +347,6 @@ static void xenfb_mouse_event(void *opaque,
static int input_init(struct XenDevice *xendev)
{
struct XenInput *in = container_of(xendev, struct XenInput, c.xendev);
if (!in->c.ds) {
xen_be_printf(xendev, 1, "ds not set (yet)\n");
return -1;
}
xenstore_write_be_int(xendev, "feature-abs-pointer", 1);
return 0;
}
@ -367,6 +360,18 @@ static int input_connect(struct XenDevice *xendev)
&in->abs_pointer_wanted) == -1)
in->abs_pointer_wanted = 0;
if (!in->c.ds) {
char *vfb = xenstore_read_str(NULL, "device/vfb");
if (vfb == NULL) {
/* there is no vfb, run vkbd on its own */
in->c.ds = get_displaystate();
} else {
qemu_free(vfb);
xen_be_printf(xendev, 1, "ds not set (yet)\n");
return -1;
}
}
rc = common_bind(&in->c);
if (rc != 0)
return rc;

1
xen-all.c
View File

@ -868,6 +868,7 @@ int xen_hvm_init(void)
exit(1);
}
xen_be_register("console", &xen_console_ops);
xen_be_register("vkbd", &xen_kbdmouse_ops);
xen_be_register("qdisk", &xen_blkdev_ops);
return 0;