[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] RE: [Xen-devel] Secondary bus reset for VT-d device
I made some very basic tests manually... :-) You can check tools/python/xen/xend/XendDomainInfo.py:do_FLR() to see when and how the do_secondary_bus_reset() is invoked. -- Dexuan Neo Jia wrote: > Could you show me how to do the unit testing for the python function? > Should it be called automatically by Xend or pciback driver? > > It looks that I encountered some PCI cfg restore problem after the bus > reset. BTW, inside the guest, we are still emulating a PCI-X system, > right? > > Thanks, > Neo > > On Fri, Aug 29, 2008 at 6:26 PM, Cui, Dexuan <dexuan.cui@xxxxxxxxx> > wrote: >> What issue did you find? >> I tested the python function do_secondary_bus_reset() on DQ35 and >> don't find issues. >> >> You may add your log.debug(...) (the output is at >> /var/log/xen/xend.log) to tools/python/xen/xend/server/pciif.py and >> tools/python/xen/util/pci.py to debug the issue you found. >> >> BTW, can you try the latest xen-unstable.hg (like 18407: >> c503269192f2) to see if your issue is still there? >> >> -- Dexuan >> >> >> -----Original Message----- >> From: Neo Jia [mailto:neojia@xxxxxxxxx] >> Sent: 2008年8月30日 7:26 >> To: Cui, Dexuan >> Cc: Ian Pratt; xen-devel@xxxxxxxxxxxxxxxxxxx; Han, Weidong >> Subject: Re: [Xen-devel] Secondary bus reset for VT-d device >> >> I just tried it on my Q35 board. It looks that there is something >> wrong with the secondary bus reset, but I can't get log to prove it. >> >> So, anybody test it on Q35 board? Or, how to debug it? >> >> Here is the tip I am using: >> >>> hg tip >> changeset: 18387:6c50c7d089d9 >> tag: tip >> user: Keir Fraser <keir.fraser@xxxxxxxxxx> >> date: Wed Aug 27 15:16:13 2008 +0100 >> summary: hvmloader: Fix e820_malloc() after bug I introduced in >> c/s 18383 >> >> Thanks, >> Neo >> >> 2008/8/29 Cui, Dexuan <dexuan.cui@xxxxxxxxx>: >>> Hi Ian, >>> Yes, I'm moving it to the pciback driver. >>> >>> Thanks, >>> -- Dexuan >>> >>> >>> -----Original Message----- >>> From: Ian Pratt [mailto:Ian.Pratt@xxxxxxxxxxxxx] >>> Sent: 2008年8月29日 16:15 >>> To: Cui, Dexuan; Neo Jia; xen-devel@xxxxxxxxxxxxxxxxxxx >>> Cc: Han, Weidong; Ian Pratt >>> Subject: RE: [Xen-devel] Secondary bus reset for VT-d device >>> >>>> Yes. When FLR-ing device, if the device lacks proper FLR capability >>>> (PCIe FLR, PCI Advanced Capabilities or ssomething), we will try >>>> SecondaryBusReset. Currently the FLR is done in xend. >>> >>> Now that 3.3 is out, are we going to move the FLR functionality >>> from xend to blkback as per the email discussion a couple of months >>> ago? >>> >>> Thanks, >>> Ian >>> >>> >> >> >> >> -- >> I would remember that if researchers were not ambitious >> probably today we haven't the technology we are using! _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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