Bug#786551: linux-image-3.16.0-4-686-pae: "swiotlb buffer is full" problem with tg3 NIC driver and kernel 3.16.0-4-686-pae under Xen
Package: src:linux
Version: 3.16.7-ckt9-3~deb8u1
Severity: important
Dear Maintainer,
After upgrading to Debian jessie, and consequently to the default Linux
kernel 3.16.0-4-686-pae and Xen hypervisor 4.4.1-amd64 in that
distribution, I had problems with the tg3 network driver under high
load resulting in "swiotlb buffer is full" messages and very poor network
performance. Unfortunately this affected a production system that I am
administrating. See below and [0] and [1] for a full description of the
problem.
With help from the xen-devel mailing list I could fix the problem by
compiling a custom kernel with the following change:
--- linux-source-3.16.orig/arch/x86/Kconfig 2015-04-24 04:05:11.000000000 +0200
+++ linux-source-3.16/arch/x86/Kconfig 2015-05-22 06:14:17.393963697 +0200
@@ -164,7 +164,7 @@
config NEED_DMA_MAP_STATE
def_bool y
- depends on X86_64 || INTEL_IOMMU || DMA_API_DEBUG
+ depends on X86_64 || INTEL_IOMMU || DMA_API_DEBUG || SWIOTLB
config NEED_SG_DMA_LENGTH
def_bool y
The reason for this change is discussed in [1]. Ian Campbell asked me on
xen-devel to file a bug here so that this can be fixed in a future version
of the Debian linux-image package.
I consider this a serious bug because I guess it affects all users running
the default jessie 686-pae kernel under Xen and use the tg3 NIC driver.
Thanks,
Marco
[0] http://lists.xen.org/archives/html/xen-devel/2015-05/msg02941.html
[1] http://www.spinics.net/lists/netdev/msg325844.html
Detailed problem description:
-----------------------------
The problem occured during fast data transfers, e.g. during a DRBD sync.
Here is one such event:
[ 4765.528635] block drbd0: Began resync as SyncSource (will sync 886784
KB [221696 bits set])
[ 4765.528654] block drbd0: updated sync UUID
09891C136111799E:F7FD1C0A50225596:F7FC1C0A50225596:F7FB1C0A50225596
[ 4768.992280] tg3 0000:02:00.0: swiotlb buffer is full (sz: 1448 bytes)
[ 4769.400296] tg3 0000:02:00.0: swiotlb buffer is full (sz: 1448 bytes)
[ 4770.216360] tg3 0000:02:00.0: swiotlb buffer is full (sz: 1448 bytes)
[ 4771.852283] tg3 0000:02:00.0: swiotlb buffer is full (sz: 1448 bytes)
[ 4775.120286] tg3 0000:02:00.0: swiotlb buffer is full (sz: 1448 bytes)
[ 4775.776027] tg3 0000:02:00.0: swiotlb buffer is full (sz: 32768 bytes)
[ 4775.778814] tg3 0000:02:00.0: swiotlb buffer is full (sz: 1448 bytes)
[ 4775.780995] tg3 0000:02:00.0: swiotlb buffer is full (sz: 1448 bytes)
[ 4775.783345] tg3 0000:02:00.0: swiotlb buffer is full (sz: 1448 bytes)
[ 4775.785097] tg3 0000:02:00.0: swiotlb buffer is full (sz: 1448 bytes)
[ 4775.988290] tg3 0000:02:00.0: swiotlb buffer is full (sz: 1448 bytes)
[ 4776.396285] tg3 0000:02:00.0: swiotlb buffer is full (sz: 1448 bytes)
[ 4777.212295] tg3 0000:02:00.0: swiotlb buffer is full (sz: 1448 bytes)
[ 4778.848298] tg3 0000:02:00.0: swiotlb buffer is full (sz: 1448 bytes)
[ 4781.664292] tg3 0000:02:00.0: swiotlb buffer is full (sz: 1448 bytes)
[ 4782.120285] tg3 0000:02:00.0: swiotlb buffer is full (sz: 1448 bytes)
[ 4788.672288] tg3 0000:02:00.0: swiotlb buffer is full (sz: 1448 bytes)
[ 4793.776046] drbd base-disk: [drbd_w_base-dis/1734] sock_sendmsg time
expired, ko = 6
[ 4794.752314] tg3 0000:02:00.0: swiotlb buffer is full (sz: 1448 bytes)
[ 4799.776046] drbd base-disk: [drbd_w_base-dis/1734] sock_sendmsg time
expired, ko = 5
[ 4801.760290] tg3 0000:02:00.0: swiotlb buffer is full (sz: 1448 bytes)
[ 4805.776040] drbd base-disk: [drbd_w_base-dis/1734] sock_sendmsg time
expired, ko = 4
[ 4811.776040] drbd base-disk: [drbd_w_base-dis/1734] sock_sendmsg time
expired, ko = 3
[ 4817.776050] drbd base-disk: [drbd_w_base-dis/1734] sock_sendmsg time
expired, ko = 2
[ 4823.776079] drbd base-disk: [drbd_w_base-dis/1734] sock_sendmsg time
expired, ko = 1
[ 4827.936300] tg3 0000:02:00.0: swiotlb buffer is full (sz: 1448 bytes)
[ 4829.776069] drbd base-disk: peer( Secondary -> Unknown ) conn(
SyncSource -> Timeout )
[ 4829.776088] block drbd0: drbd_send_block() failed
In this case the problem caused the DRBD sync to stall and eventually
fail completely.
Sometimes I also see the message "swiotlb_tbl_map_single: 8 callbacks
suppressed" or similar between the "buffer full" messages.
The problem only occurred when running Linux 3.16.0-4-686-pae under Xen
4.4.1. It did NOT occur when booting the same kernel without Xen, or
when booting the corresponding amd64 kernel (3.16.0-4-amd64) with or
without Xen. There was no problem in Debian wheezy before the upgrade
(kernel 3.2.0-4-686-pae and Xen Hypervisor 4.1.3-amd64). The problem
also occurs when only dom0 is running (all domU VMs shut down).
** PCI devices:
00:00.0 Host bridge [0600]: Intel Corporation 3200/3210 Chipset DRAM Controller [8086:29f0] (rev 01)
Subsystem: IBM Device [1014:0377]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr+ Stepping- SERR+ FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ >SERR- <PERR- INTx-
Latency: 0
Capabilities: <access denied>
Kernel driver in use: i3200_edac
00:01.0 PCI bridge [0604]: Intel Corporation 3200/3210 Chipset Host-Primary PCI Express Bridge [8086:29f1] (rev 01) (prog-if 00 [Normal decode])
Control: I/O- Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr+ Stepping- SERR+ FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 32 bytes
Bus: primary=00, secondary=04, subordinate=04, sec-latency=0
Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- <SERR- <PERR-
BridgeCtl: Parity+ SERR+ NoISA- VGA- MAbort- >Reset- FastB2B-
PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
Capabilities: <access denied>
Kernel driver in use: pcieport
00:1c.0 PCI bridge [0604]: Intel Corporation 82801I (ICH9 Family) PCI Express Port 1 [8086:2940] (rev 02) (prog-if 00 [Normal decode])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr+ Stepping- SERR+ FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 32 bytes
Bus: primary=00, secondary=08, subordinate=08, sec-latency=0
I/O behind bridge: 00004000-00004fff
Memory behind bridge: e8000000-e81fffff
Prefetchable memory behind bridge: 00000000e8600000-00000000e87fffff
Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ <SERR- <PERR-
BridgeCtl: Parity+ SERR+ NoISA- VGA- MAbort- >Reset+ FastB2B-
PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
Capabilities: <access denied>
Kernel driver in use: pcieport
00:1c.4 PCI bridge [0604]: Intel Corporation 82801I (ICH9 Family) PCI Express Port 5 [8086:2948] (rev 02) (prog-if 00 [Normal decode])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr+ Stepping- SERR+ FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 32 bytes
Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
I/O behind bridge: 00005000-00005fff
Memory behind bridge: e8200000-e82fffff
Prefetchable memory behind bridge: 00000000e8800000-00000000e89fffff
Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ <SERR- <PERR-
BridgeCtl: Parity+ SERR+ NoISA+ VGA- MAbort- >Reset- FastB2B-
PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
Capabilities: <access denied>
Kernel driver in use: pcieport
00:1c.5 PCI bridge [0604]: Intel Corporation 82801I (ICH9 Family) PCI Express Port 6 [8086:294a] (rev 02) (prog-if 00 [Normal decode])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr+ Stepping- SERR+ FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 32 bytes
Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
I/O behind bridge: 00002000-00002fff
Memory behind bridge: e8300000-e83fffff
Prefetchable memory behind bridge: 00000000e8a00000-00000000e8bfffff
Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ <SERR- <PERR-
BridgeCtl: Parity+ SERR+ NoISA+ VGA- MAbort- >Reset- FastB2B-
PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
Capabilities: <access denied>
Kernel driver in use: pcieport
00:1d.0 USB controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #1 [8086:2934] (rev 02) (prog-if 00 [UHCI])
Subsystem: IBM Device [1014:0377]
Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 16
Region 4: I/O ports at 1820 [size=32]
Capabilities: <access denied>
Kernel driver in use: uhci_hcd
00:1d.1 USB controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #2 [8086:2935] (rev 02) (prog-if 00 [UHCI])
Subsystem: IBM Device [1014:0377]
Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin B routed to IRQ 17
Region 4: I/O ports at 1840 [size=32]
Capabilities: <access denied>
Kernel driver in use: uhci_hcd
00:1d.2 USB controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #3 [8086:2936] (rev 02) (prog-if 00 [UHCI])
Subsystem: IBM Device [1014:0377]
Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin C routed to IRQ 18
Region 4: I/O ports at 1860 [size=32]
Capabilities: <access denied>
Kernel driver in use: uhci_hcd
00:1d.7 USB controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #1 [8086:293a] (rev 02) (prog-if 20 [EHCI])
Subsystem: IBM Device [1014:0377]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr+ Stepping- SERR+ FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 16
Region 0: Memory at e8500000 (32-bit, non-prefetchable) [size=1K]
Capabilities: <access denied>
Kernel driver in use: ehci-pci
00:1e.0 PCI bridge [0604]: Intel Corporation 82801 PCI Bridge [8086:244e] (rev 92) (prog-if 01 [Subtractive decode])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr+ Stepping- SERR+ FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Bus: primary=00, secondary=03, subordinate=03, sec-latency=32
I/O behind bridge: 00003000-00003fff
Memory behind bridge: e8400000-e84fffff
Prefetchable memory behind bridge: 00000000e0000000-00000000e7ffffff
Secondary status: 66MHz- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort+ <SERR- <PERR-
BridgeCtl: Parity+ SERR+ NoISA+ VGA+ MAbort- >Reset- FastB2B-
PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
Capabilities: <access denied>
00:1f.0 ISA bridge [0601]: Intel Corporation 82801IB (ICH9) LPC Interface Controller [8086:2918] (rev 02)
Subsystem: IBM Device [1014:0377]
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr+ Stepping- SERR+ FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Capabilities: <access denied>
Kernel driver in use: lpc_ich
00:1f.2 IDE interface [0101]: Intel Corporation 82801IB (ICH9) 2 port SATA Controller [IDE mode] [8086:2921] (rev 02) (prog-if 8f [Master SecP SecO PriP PriO])
Subsystem: IBM Device [1014:0377]
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr+ Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin B routed to IRQ 17
Region 0: I/O ports at 1c18 [size=8]
Region 1: I/O ports at 1c0c [size=4]
Region 2: I/O ports at 1c10 [size=8]
Region 3: I/O ports at 1c08 [size=4]
Region 4: I/O ports at 18c0 [size=16]
Region 5: I/O ports at 18b0 [size=16]
Capabilities: <access denied>
Kernel driver in use: ata_piix
00:1f.3 SMBus [0c05]: Intel Corporation 82801I (ICH9 Family) SMBus Controller [8086:2930] (rev 02)
Subsystem: IBM Device [1014:0377]
Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr+ Stepping- SERR+ FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Interrupt: pin B routed to IRQ 17
Region 0: Memory at e8500400 (64-bit, non-prefetchable) [size=256]
Region 4: I/O ports at 1880 [size=32]
Kernel driver in use: i801_smbus
00:1f.5 IDE interface [0101]: Intel Corporation 82801I (ICH9 Family) 2 port SATA Controller [IDE mode] [8086:2926] (rev 02) (prog-if 85 [Master SecO PriO])
Subsystem: IBM Device [1014:0377]
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr+ Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin B routed to IRQ 17
Region 0: I/O ports at 1c30 [size=8]
Region 1: I/O ports at 1c24 [size=4]
Region 2: I/O ports at 1c28 [size=8]
Region 3: I/O ports at 1c20 [size=4]
Region 4: I/O ports at 18e0 [size=16]
Region 5: I/O ports at 18d0 [size=16]
Capabilities: <access denied>
Kernel driver in use: ata_piix
01:00.0 SCSI storage controller [0100]: LSI Logic / Symbios Logic SAS1064ET PCI-Express Fusion-MPT SAS [1000:0056] (rev 02)
Subsystem: IBM Device [1014:0306]
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr+ Stepping- SERR+ FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 32 bytes
Interrupt: pin A routed to IRQ 17
Region 0: I/O ports at 2000 [size=256]
Region 1: Memory at e8310000 (64-bit, non-prefetchable) [size=16K]
Region 3: Memory at e8300000 (64-bit, non-prefetchable) [size=64K]
[virtual] Expansion ROM at e8a00000 [disabled] [size=2M]
Capabilities: <access denied>
Kernel driver in use: mptsas
02:00.0 Ethernet controller [0200]: Broadcom Corporation NetXtreme BCM5722 Gigabit Ethernet PCI Express [14e4:165a]
Subsystem: IBM IBM System x3350 (Machine type 4192) [1014:0378]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr+ Stepping- SERR+ FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 32 bytes
Interrupt: pin A routed to IRQ 59
Region 0: Memory at e8200000 (64-bit, non-prefetchable) [size=64K]
Expansion ROM at <ignored> [disabled]
Capabilities: <access denied>
Kernel driver in use: tg3
03:01.0 Ethernet controller [0200]: Broadcom Corporation NetXtreme BCM5703 Gigabit Ethernet [14e4:16c7] (rev 10)
Subsystem: IBM Device [1014:026f]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr+ Stepping- SERR+ FastB2B- DisINTx-
Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 64 (16000ns min), Cache Line Size: 32 bytes
Interrupt: pin A routed to IRQ 21
Region 0: Memory at e8400000 (64-bit, non-prefetchable) [size=64K]
Expansion ROM at <ignored> [disabled]
Capabilities: <access denied>
Kernel driver in use: tg3
03:02.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] ES1000 [1002:515e] (rev 02) (prog-if 00 [VGA controller])
Subsystem: IBM Device [1014:0325]
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping+ SERR+ FastB2B+ DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 64 (2000ns min), Cache Line Size: 32 bytes
Interrupt: pin A routed to IRQ 19
Region 0: Memory at e0000000 (32-bit, prefetchable) [size=128M]
Region 1: I/O ports at 3000 [size=256]
Region 2: Memory at e8410000 (32-bit, non-prefetchable) [size=64K]
[virtual] Expansion ROM at e8420000 [disabled] [size=128K]
Capabilities: <access denied>
Kernel driver in use: radeon
** USB devices:
Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
-- System Information:
Debian Release: 8.0
APT prefers stable-updates
APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: i386 (i686)
Kernel: Linux 3.16.7-ckt9 (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Init: systemd (via /run/systemd/system)
Versions of packages linux-image-3.16.0-4-686-pae depends on:
ii debconf [debconf-2.0] 1.5.56
ii initramfs-tools [linux-initramfs-tool] 0.120
ii kmod 18-3
ii linux-base 3.5
ii module-init-tools 18-3
Versions of packages linux-image-3.16.0-4-686-pae recommends:
ii firmware-linux-free 3.3
ii irqbalance 1.0.6-3
ii libc6-i686 2.19-18
Versions of packages linux-image-3.16.0-4-686-pae suggests:
pn debian-kernel-handbook <none>
ii grub-pc 2.02~beta2-22
pn linux-doc-3.16 <none>
Versions of packages linux-image-3.16.0-4-686-pae is related to:
pn firmware-atheros <none>
pn firmware-bnx2 <none>
pn firmware-bnx2x <none>
pn firmware-brcm80211 <none>
pn firmware-intelwimax <none>
pn firmware-ipw2x00 <none>
pn firmware-ivtv <none>
pn firmware-iwlwifi <none>
pn firmware-libertas <none>
pn firmware-linux <none>
ii firmware-linux-nonfree 0.43
pn firmware-myricom <none>
pn firmware-netxen <none>
pn firmware-qlogic <none>
pn firmware-ralink <none>
pn firmware-realtek <none>
ii xen-hypervisor-4.4-amd64 [xen-hypervisor] 4.4.1-9
-- debconf information excluded
Reply to: