PPC: rename msync to msync_4xx
[qemu.git] / target-ppc / kvm_ppc.c
1 /*
2 * PowerPC KVM support
3 *
4 * Copyright IBM Corp. 2008
5 *
6 * Authors:
7 * Hollis Blanchard <hollisb@us.ibm.com>
8 *
9 * This work is licensed under the terms of the GNU GPL, version 2 or later.
10 * See the COPYING file in the top-level directory.
11 *
12 */
13
14 #include "qemu-common.h"
15 #include "qemu-timer.h"
16 #include "kvm_ppc.h"
17 #include "device_tree.h"
18
19 #define PROC_DEVTREE_PATH "/proc/device-tree"
20
21 static QEMUTimer *kvmppc_timer;
22 static unsigned int kvmppc_timer_rate;
23
24 static void kvmppc_timer_hack(void *opaque)
25 {
26 qemu_notify_event();
27 qemu_mod_timer(kvmppc_timer, qemu_get_clock_ns(vm_clock) + kvmppc_timer_rate);
28 }
29
30 void kvmppc_init(void)
31 {
32 /* XXX The only reason KVM yields control back to qemu is device IO. Since
33 * an idle guest does no IO, qemu's device model will never get a chance to
34 * run. So, until Qemu gains IO threads, we create this timer to ensure
35 * that the device model gets a chance to run. */
36 kvmppc_timer_rate = get_ticks_per_sec() / 10;
37 kvmppc_timer = qemu_new_timer_ns(vm_clock, &kvmppc_timer_hack, NULL);
38 qemu_mod_timer(kvmppc_timer, qemu_get_clock_ns(vm_clock) + kvmppc_timer_rate);
39 }
40