Hi Steven,
We tested the xm block-attach/detach command.
It repeats block-attach/detach command for DomU and pv-on-hvm on HVM Domain.
(block-attach -> block-detach -> block-attach -> block-detach -> ...)
The block-attach command failed when repeating 256 times.
I can't reproduce this - just tested 500 or so attach/detach pairs in
a tight loop and worked for me. However I was using a regular domU -
is it pv-on-hvm only? Can you give a more detailed repro case (or a
script)?
It already seems to have been corrected.
・xen-unstable.hg : cs 13198
[PV-ON-HVM] Update evtchn interface to match new PV Linux interfaces.
----------------------------------------------------------------------------------------------------
--- a/unmodified_drivers/linux-2.6/platform-pci/evtchn.c Sat Dec 30 18:23:27
2006 +0000
+++ b/unmodified_drivers/linux-2.6/platform-pci/evtchn.c Sun Dec 31 11:59:47
2006 +0000
@@ -118,8 +144,12 @@ void unbind_from_irqhandler(unsigned int
mask_evtchn(evtchn);
evtchns[evtchn].handler = NULL;
+
+ if (evtchns[evtchn].close) {
+ struct evtchn_close close = { .port = evtchn };
+ HYPERVISOR_event_channel_op(EVTCHNOP_close, &close);
+ }
}
-
EXPORT_SYMBOL(unbind_from_irqhandler);
void notify_remote_via_irq(int irq)
----------------------------------------------------------------------------------------------------
However, the following problems remain.
I think that it operates if the following problems can be solved.
It is necessary to correct pv-on-hvm according to the following corrections.
・xen-unstable.hg : cs 13197
[LINUX] Extend the event-channel interfaces to provide helper methods
I confirmed it with up-to-date xen-unstable.hg. (cs 13282)
It did not reproduce it in DomU.
Because VBD was not able to be used, pv-on-hvm was not able to confirm it.
The following errors occur.
# insmod xen-vbd.ko
xen-vbd: Unknown symbol irq_to_evtchn_port
insmod: error inserting 'xen-vbd.ko': -1 Unknown symbol in module
Thanks,
--
Takanori Kasai
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel