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xen-devel
Re: Bug in pci-detach (Was: Re: [Xen-devel] Re: VT-d HowTo Update)
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To: |
"Zhai, Edwin" <edwin.zhai@xxxxxxxxx> |
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Subject: |
Re: Bug in pci-detach (Was: Re: [Xen-devel] Re: VT-d HowTo Update) |
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From: |
Simon Horman <horms@xxxxxxxxxxxx> |
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Date: |
Thu, 23 Apr 2009 10:36:36 +1000 |
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Cc: |
Christian Tramnitz <chris.ace@xxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, "Han, Weidong" <weidong.han@xxxxxxxxx>, Keir Fraser <keir.fraser@xxxxxxxxxxxxx>, "Cui, Dexuan" <dexuan.cui@xxxxxxxxx> |
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Wed, 22 Apr 2009 17:37:00 -0700 |
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<20090422014446.GA30419@xxxxxxxxxxxx> <20090422025000.GA7916@xxxxxxxxxxxx> <49EE90FA.8000700@xxxxxxxxx> <20090422041307.GC7916@xxxxxxxxxxxx> <49EED51A.30508@xxxxxxxxx> |
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Mutt/1.5.18 (2008-05-17) |
On Wed, Apr 22, 2009 at 04:28:10PM +0800, Zhai, Edwin wrote:
> Simon,
>
> In previous solution, the "vslots" entry in xenstore is only used for
> qemu => xend communication, and not present until qemu create it.
> But with support of vslot in config file, this xenstore entry are
> created by xend at the beginning... Now xend will get value from itself
> (AUTO_PHP_SLOT when not specified) without waiting for qemu:(
>
> Temp solution is let xend to check if the return value is AUTO_PHP_SLOT,
> but xend still can't know qemu's response. We need make sure, if can
> not support specified vslots in config, qemu should notify xend. Then
> xend should know if this is qemu's response or the specified vslots
> requirement.
After some investigation it turns out that the problem was not with
the use of vslots - which is still only used for qemu=>xend communication.
The problem was with renaming vslt to vslots because in the dictionary
that describes a PCI device, these entries were different.
I have posted a patch to resolve this problem to xen-devel as
"xm: Fix hot-unplug of statically-assigned devices".
http://lists.xensource.com/archives/html/xen-devel/2009-04/msg00897.html
--
Simon Horman
VA Linux Systems Japan K.K. Satellite Lab in Sydney, Australia
H: www.vergenet.net/~horms/ W: www.valinux.co.jp/en
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