[Xen-devel] [PATCH pvops] Fix a bug that shutdown watcher is disabled on pvops

[Frank Pan <frankpzh@xxxxxxxxx>]

I use pvops kernel for HVM domU, and I find that shutdown watcher is
not enabled at all when I compile platform-pci module inside kernel.
The code related calls xen_setup_shutdown_event after xenbus_probe,
that makes setup_shutdown_watcher never called.

The following patch fixes this by changing the order of xenbus_probe
and xen_setup_shutdown, which makes my PV-on-HVM domU responses well
for the "control/shutdown" entry.

---
 linux-2.6-xen/drivers/xen/platform-pci.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/linux-2.6-xen/drivers/xen/platform-pci.c
b/linux-2.6-xen/drivers/xen/platform-pci.c
index c01b5dd..f141cfe 100644
--- a/linux-2.6-xen/drivers/xen/platform-pci.c
+++ b/linux-2.6-xen/drivers/xen/platform-pci.c
@@ -162,10 +162,10 @@ static int __devinit platform_pci_init(struct
pci_dev *pdev,
        ret = gnttab_init();
        if (ret)
                goto out;
-       xenbus_probe(NULL);
        ret = xen_setup_shutdown_event();
        if (ret)
                goto out;
+       xenbus_probe(NULL);
        return 0;

 out:
-- 
1.7.0.4

-- 
Frank Pan

Computer Science and Technology
Tsinghua University

Attachment: 0001-Fix-a-bug-that-shutdown-watcher-is-disabled-on-pvops.patch
Description: Text Data

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