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[Qemu-devel] [Bug 754591] Re: NIC doesn't work when it had been used bef


From: Yongjie Ren
Subject: [Qemu-devel] [Bug 754591] Re: NIC doesn't work when it had been used before
Date: Fri, 17 Jun 2011 08:25:32 -0000

It was fixed in kvm.git.
This bug is fixed in the kvm upstream. It was fixed in kvm.git f8fcfd7 by
address@hidden

commit f8fcfd775523347afe460dc3a0f45d0479e784a2
Author: Alex Williamson <address@hidden>
Date:   Tue May 10 10:02:39 2011 -0600

    KVM: Use pci_store/load_saved_state() around VM device usage

    Store the device saved state so that we can reload the device back
    to the original state when it's unassigned.  This has the benefit
    that the state survives across pci_reset_function() calls via
    the PCI sysfs reset interface while the VM is using the device.

    Signed-off-by: Alex Williamson <address@hidden>
    Acked-by: Avi Kivity <address@hidden>
    Signed-off-by: Jesse Barnes <address@hidden>


** Changed in: qemu
       Status: New => Fix Committed

** Changed in: qemu
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/754591

Title:
  NIC doesn't work when it had been used before

Status in QEMU:
  Fix Released

Bug description:
  Environment:
  ------------
  Host OS (ia32/ia32e/IA64): All
  Guest OS (ia32/ia32e/IA64): All
  Guest OS Type (Linux/Windows):All
  kvm.git Commit:3b840cc27e5b831a26e3303096b88e112d1cf59f
  qemu-kvm Commit:df85c051d780bca0ee2462cfeb8ef6d9552a19b0
  Host Kernel Version:2.6.38+
  Hardware:Westmere-EP / Sandy Bridge

  
  Bug detailed description:
  --------------------------
  NIC doesn't work when it had been used before.
  Statically assign a NIC to guest, it works well. Then shutdown the guest, and
  assign the same NIC to a guest again. The NIC doesn't work. The dmesg of the
  guest is as following.
  --
  Intel(R) Gigabit Ethernet Network Driver - version 2.1.0-k2
  Copyright (c) 2007-2009 Intel Corporation.
  ACPI: PCI Interrupt Link [LNKC] enabled at IRQ 11
  igb 0000:00:03.0: PCI INT A -> Link[LNKC] -> GSI 11 (level, high) -> IRQ 11
  igb 0000:00:03.0: setting latency timer to 64
    alloc irq_desc for 24 on node -1
    alloc kstat_irqs on node -1
  igb 0000:00:03.0: irq 24 for MSI/MSI-X
    alloc irq_desc for 25 on node -1
    alloc kstat_irqs on node -1
  igb 0000:00:03.0: irq 25 for MSI/MSI-X
    alloc irq_desc for 26 on node -1
    alloc kstat_irqs on node -1
  igb 0000:00:03.0: irq 26 for MSI/MSI-X
  igb 0000:00:03.0: PHY reset is blocked due to SOL/IDER session.
  igb 0000:00:03.0: The NVM Checksum Is Not Valid
  igb 0000:00:03.0: PCI INT A disabled
  igb: probe of 0000:00:03.0 failed with error -5

  
  Reproduce steps:
  ----------------
  1.statically assign a NIC to a guest, check if it works well
  2.shutdown the guest.
  3.statically assign the same NIC to a guest (NIC doesn't work now).

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