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Merge branch 'v2.6.36-rc6-urgent-fixes' of git://xenbits.xen.org/people/sstabellini/linux-pvhvm 

* 'v2.6.36-rc6-urgent-fixes' of git://xenbits.xen.org/people/sstabellini/linux-pvhvm:
  xen: do not initialize PV timers on HVM if !xen_have_vector_callback
  xen: do not set xenstored_ready before xenbus_probe on hvm
This commit is contained in:
Linus Torvalds 2010-10-06 09:51:28 -07:00
parent 8fe9793af0 31e7e931cd
commit 34984f54b7
2 changed files with 9 additions and 5 deletions
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5
arch/x86/xen/time.c
View File

@ -489,8 +489,9 @@ static void xen_hvm_setup_cpu_clockevents(void)
__init void xen_hvm_init_time_ops(void)
{
/* vector callback is needed otherwise we cannot receive interrupts
* on cpu > 0 */
if (!xen_have_vector_callback && num_present_cpus() > 1)
* on cpu > 0 and at this point we don't know how many cpus are
* available */
if (!xen_have_vector_callback)
return;
if (!xen_feature(XENFEAT_hvm_safe_pvclock)) {
printk(KERN_INFO "Xen doesn't support pvclock on HVM,"

9
drivers/xen/xenbus/xenbus_probe.c
View File

@ -755,7 +755,10 @@ int register_xenstore_notifier(struct notifier_block *nb)
{
int ret = 0;
blocking_notifier_chain_register(&xenstore_chain, nb);
if (xenstored_ready > 0)
ret = nb->notifier_call(nb, 0, NULL);
else
blocking_notifier_chain_register(&xenstore_chain, nb);
return ret;
}
@ -769,7 +772,7 @@ EXPORT_SYMBOL_GPL(unregister_xenstore_notifier);
void xenbus_probe(struct work_struct *unused)
{
BUG_ON((xenstored_ready <= 0));
xenstored_ready = 1;
/* Enumerate devices in xenstore and watch for changes. */
xenbus_probe_devices(&xenbus_frontend);
@ -835,8 +838,8 @@ static int __init xenbus_init(void)
xen_store_evtchn = xen_start_info->store_evtchn;
xen_store_mfn = xen_start_info->store_mfn;
xen_store_interface = mfn_to_virt(xen_store_mfn);
xenstored_ready = 1;
}
xenstored_ready = 1;
}
/* Initialize the interface to xenstore. */