[Xen-devel] Re: [PATCH] PV Passthrough PCI Device Hotplug Support (Tools Part)

[Yosuke Iwamatsu <y-iwamatsu@xxxxxxxxxxxxx>]

Zhai, Edwin wrote:
> Yosuke,
>
> Thanks for you work.
> I have tested your patch works on HVM VT-d side.
I'm relieved to hear that. Thank you.

> One suggestion is error handling for user input. e.g. following input error 
> should be caught by xm:
> [root@vt-gang32 ~]# xm pci-attach EdwinHVMDomainVtd2 0:2.0.0    (should be 
> 0:2:0.0)
> Error: pci: failed to locate device and parse it's resources - [Errno 2] No such 
> file or directory: '/sys/bus/pci/devices/0000:00:02.0/driver'
> Usage: xm pci-attach <Domain> <domain:bus:slot.func> [virtual slot]
Okay.
The small patch below should fix the issue.
(applied after the previous patch)

Thanks,
  Yosuke Iwamatsu

---------

xm: Fix parsing pci device name.

Signed-off-by: Yosuke Iwamatsu <y-iwamatsu@xxxxxxxxxxxxx>

diff -r 9233270dfe6a tools/python/xen/xm/main.py
--- a/tools/python/xen/xm/main.py       Mon Mar 10 17:58:25 2008 +0900
+++ b/tools/python/xen/xm/main.py       Mon Mar 10 20:26:49 2008 +0900
@@ -2240,7 +2240,7 @@ def parse_pci_configuration(args, state)
     pci_match = re.match(r"((?P<domain>[0-9a-fA-F]{1,4})[:,])?" + \
             r"(?P<bus>[0-9a-fA-F]{1,2})[:,]" + \
             r"(?P<slot>[0-9a-fA-F]{1,2})[.,]" + \
-            r"(?P<func>[0-9a-fA-F])", pci_dev_str)
+            r"(?P<func>[0-7])$", pci_dev_str)
     if pci_match == None:
         raise OptionError("Invalid argument: %s %s" % (pci_dev_str,vslt))
     pci_dev_info = pci_match.groupdict('0')


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