[Xen-bugs] [Bug 1722] [vt-d] fail to get IP address after hotplug VF for 300 times

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http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1722


shaohui.zheng@xxxxxxxxx changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED




------- Comment #1 from shaohui.zheng@xxxxxxxxx  2011-01-30 00:45 -------
changeset:   22823:48008a2cbc1e
user:        Fengzhe Zhang <fengzhe.zhang@xxxxxxxxx>
date:        Thu Jan 27 11:31:46 2011 +0000
files:       xen/drivers/passthrough/io.c
description:
vtd: Fix for irq bind failure after PCI attaching 32 times

Originally when detaching a PCI device, pirq_to_emuirq and pirq_to_irq
are freed via hypercall do_physdev_op. Now in function
pt_irq_destroy_bind_vtd, duplicated logic is added to free
pirq_to_emuirq, but not pirq_to_irq. This causes do_physdev_op fail to
free both emuirq and irq. After attaching a PCI device for 32 times,
irq resources run out. This patch removes the redundant logic.


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