[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] RE: [Xen-devel] RE: [Xen-changelog] [xen-unstable] xend: hot-plug PCI devices at boot-time
Yes, this can avoid the duplication invocation. Thanks, -- Dexuan -----Original Message----- From: Simon Horman [mailto:horms@xxxxxxxxxxxx] Sent: 2009?6?15? 9:53 To: Cui, Dexuan Cc: xen-devel@xxxxxxxxxxxxxxxxxxx Subject: Re: [Xen-devel] RE: [Xen-changelog] [xen-unstable] xend: hot-plug PCI devices at boot-time On Fri, Jun 12, 2009 at 02:35:02PM +0800, Cui, Dexuan wrote: > On Fri, Jun 12, 2009 at 14:34, Simon Horman wrote: > > On Fri, Jun 12, 2009 at 01:51:10PM +0800, Cui, Dexuan wrote: > > > Hi Simon, > > > After this changeset, I find there are some new issues in the xend: > > > I noticed in xend.log, setupOneDevice() is invoked twice, > > > but actually I only statically assign 1 device to hvm guest. > > > > > > After looking into the xend code, I find in XendDomainInfo.py: > > > _initDomain() -> _createDevices(), we invoke > > > self._createDevice(devclass, config) that eventually invokes > > > setupOneDevice() -- this is the first time; > > > And later, still in _createDevices(), we invoke > > > pci_device_configure_boot() -> pci_device_configure() -> > > > dev_control.reconfigureDevice(devid, dev_config) -> > > > xend/server/pciif.py:reconfigureDevice() -> setupOneDevice() > > > -- this is the second time. Can you remove the duplicate invocation? > > > > Sure, I will look into it ASAP. > > > Can I confirm which version of xen-unstable.hg and qemu-xen-unstable.git > > you are using? > I'm using the latest xen-unstable 19740, Dom0 898, ioemu > e0bb6b8df60863bca0163a1688baf4854e931e55. Hi Dexuan, I think that a simple solution to this is to just remove the first invocation. ----------------------------------------------------------------------- xend: pass-through: Only call setupOneDevice() once per device As observed by Dexuan Cui, when PCI devices are passed through at domain-creation-time setupOneDevice() will be called twice. Once via setupDevice() and once via econfigureDevice() which is called in pci_device_configure(). This patch removes the first of these. Cc: Dexuan Cui <dexuan.cui@xxxxxxxxx> Cc: Masaki Kanno <kanno.masaki@xxxxxxxxxxxxxx> Signed-off-by: Simon Horman <horms@xxxxxxxxxxxx> Index: xen-unstable.hg/tools/python/xen/xend/server/pciif.py =================================================================== --- xen-unstable.hg.orig/tools/python/xen/xend/server/pciif.py 2009-06-15 11:24:00.000000000 +1000 +++ xen-unstable.hg/tools/python/xen/xend/server/pciif.py 2009-06-15 11:24:02.000000000 +1000 @@ -436,8 +436,6 @@ class PciController(DevController): ' same guest with %s' raise VmError(err_msg % (s, dev.name)) - for (domain, bus, slot, func) in pci_dev_list: - self.setupOneDevice(domain, bus, slot, func) wPath = '/local/domain/0/backend/pci/%u/0/aerState' % (self.getDomid()) self.aerStateWatch = xswatch(wPath, self._handleAerStateWatch) log.debug('pci: register aer watch %s', wPath) _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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