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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-06 18:51:28 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-06 18:51:28 +0200 |
| commit | 34984f54b7e8cb29632e921fb2f47b403c0e617a (patch) | |
| tree | 76a900f41782ab78eb2c96ee2b6ff81c9f3bf1b3 | |
| parent | Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/msz... (diff) | |
| parent | xen: do not initialize PV timers on HVM if !xen_have_vector_callback (diff) | |
| download | linux-34984f54b7e8cb29632e921fb2f47b403c0e617a.tar.xz linux-34984f54b7e8cb29632e921fb2f47b403c0e617a.zip | |
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
| -rw-r--r-- | arch/x86/xen/time.c | 5 | ||||
| -rw-r--r-- | drivers/xen/xenbus/xenbus_probe.c | 9 |
2 files changed, 9 insertions, 5 deletions
diff --git a/arch/x86/xen/time.c b/arch/x86/xen/time.c index 1a5353a753fc..b2bb5aa3b054 100644 --- a/arch/x86/xen/time.c +++ b/arch/x86/xen/time.c @@ -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," diff --git a/drivers/xen/xenbus/xenbus_probe.c b/drivers/xen/xenbus/xenbus_probe.c index 29bac5118877..d409495876f1 100644 --- a/drivers/xen/xenbus/xenbus_probe.c +++ b/drivers/xen/xenbus/xenbus_probe.c @@ -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. */ |