Re: [Qemu-devel] [BUG]Unassigned mem write during pci device hot-plug

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Re: [Qemu-devel] [BUG]Unassigned mem write during pci device hot-plug

From:	xuyandong
Subject:	Re: [Qemu-devel] [BUG]Unassigned mem write during pci device hot-plug
Date:	Tue, 11 Dec 2018 01:47:37 +0000
On Sat, Dec 08, 2018 at 11:58:59AM +0000, xuyandong wrote:
> > > > Hi all,
> > > >
> > > >
> > > >
> > > > In our test, we configured VM with several pci-bridges and a
> > > > virtio-net nic been attached with bus 4,
> > > >
> > > > After VM is startup, We ping this nic from host to judge if it is
> > > > working normally. Then, we hot add pci devices to this VM with bus 0.
> > > >
> > > > We  found the virtio-net NIC in bus 4 is not working (can not
> > > > connect) occasionally, as it kick virtio backend failure with error 
> > > > below:
> > > >
> > > >     Unassigned mem write 00000000fc803004 = 0x1
> > > >
> > > >
> > > >
> > > > memory-region: pci_bridge_pci
> > > >
> > > >   0000000000000000-ffffffffffffffff (prio 0, RW): pci_bridge_pci
> > > >
> > > >     00000000fc800000-00000000fc803fff (prio 1, RW): virtio-pci
> > > >
> > > >       00000000fc800000-00000000fc800fff (prio 0, RW):
> > > > virtio-pci-common
> > > >
> > > >       00000000fc801000-00000000fc801fff (prio 0, RW):
> > > > virtio-pci-isr
> > > >
> > > >       00000000fc802000-00000000fc802fff (prio 0, RW):
> > > > virtio-pci-device
> > > >
> > > >       00000000fc803000-00000000fc803fff (prio 0, RW):
> > > > virtio-pci-notify  <- io mem unassigned
> > > >
> > > >       …
> > > >
> > > >
> > > >
> > > > We caught an exceptional address changing while this problem
> > > > happened, show as
> > > > follow:
> > > >
> > > > Before pci_bridge_update_mappings：
> > > >
> > > >       00000000fc000000-00000000fc1fffff (prio 1, RW): alias
> > > > pci_bridge_pref_mem @pci_bridge_pci
> > > > 00000000fc000000-00000000fc1fffff
> > > >
> > > >       00000000fc200000-00000000fc3fffff (prio 1, RW): alias
> > > > pci_bridge_pref_mem @pci_bridge_pci
> > > > 00000000fc200000-00000000fc3fffff
> > > >
> > > >       00000000fc400000-00000000fc5fffff (prio 1, RW): alias
> > > > pci_bridge_pref_mem @pci_bridge_pci
> > > > 00000000fc400000-00000000fc5fffff
> > > >
> > > >       00000000fc600000-00000000fc7fffff (prio 1, RW): alias
> > > > pci_bridge_pref_mem @pci_bridge_pci
> > > > 00000000fc600000-00000000fc7fffff
> > > >
> > > >       00000000fc800000-00000000fc9fffff (prio 1, RW): alias
> > > > pci_bridge_pref_mem @pci_bridge_pci
> > > > 00000000fc800000-00000000fc9fffff
> > > > <- correct Adress Spce
> > > >
> > > >       00000000fca00000-00000000fcbfffff (prio 1, RW): alias
> > > > pci_bridge_pref_mem @pci_bridge_pci
> > > > 00000000fca00000-00000000fcbfffff
> > > >
> > > >       00000000fcc00000-00000000fcdfffff (prio 1, RW): alias
> > > > pci_bridge_pref_mem @pci_bridge_pci
> > > > 00000000fcc00000-00000000fcdfffff
> > > >
> > > >       00000000fce00000-00000000fcffffff (prio 1, RW): alias
> > > > pci_bridge_pref_mem @pci_bridge_pci
> > > > 00000000fce00000-00000000fcffffff
> > > >
> > > >
> > > >
> > > > After pci_bridge_update_mappings：
> > > >
> > > >       00000000fda00000-00000000fdbfffff (prio 1, RW): alias
> > > > pci_bridge_mem @pci_bridge_pci 00000000fda00000-00000000fdbfffff
> > > >
> > > >       00000000fdc00000-00000000fddfffff (prio 1, RW): alias
> > > > pci_bridge_mem @pci_bridge_pci 00000000fdc00000-00000000fddfffff
> > > >
> > > >       00000000fde00000-00000000fdffffff (prio 1, RW): alias
> > > > pci_bridge_mem @pci_bridge_pci 00000000fde00000-00000000fdffffff
> > > >
> > > >       00000000fe000000-00000000fe1fffff (prio 1, RW): alias
> > > > pci_bridge_mem @pci_bridge_pci 00000000fe000000-00000000fe1fffff
> > > >
> > > >       00000000fe200000-00000000fe3fffff (prio 1, RW): alias
> > > > pci_bridge_mem @pci_bridge_pci 00000000fe200000-00000000fe3fffff
> > > >
> > > >       00000000fe400000-00000000fe5fffff (prio 1, RW): alias
> > > > pci_bridge_mem @pci_bridge_pci 00000000fe400000-00000000fe5fffff
> > > >
> > > >       00000000fe600000-00000000fe7fffff (prio 1, RW): alias
> > > > pci_bridge_mem @pci_bridge_pci 00000000fe600000-00000000fe7fffff
> > > >
> > > >       00000000fe800000-00000000fe9fffff (prio 1, RW): alias
> > > > pci_bridge_mem @pci_bridge_pci 00000000fe800000-00000000fe9fffff
> > > >
> > > >       fffffffffc800000-fffffffffc800000 (prio 1, RW): alias
> pci_bridge_pref_mem
> > > > @pci_bridge_pci fffffffffc800000-fffffffffc800000   <- Exceptional 
> > > > Adress
> > > Space
> > >
> > > This one is empty though right?
> > >
> > > >
> > > >
> > > > We have figured out why this address becomes this value,
> > > > according to pci spec,  pci driver can get BAR address size by
> > > > writing 0xffffffff to
> > > >
> > > > the pci register firstly, and then read back the value from this 
> > > > register.
> > >
> > >
> > > OK however as you show below the BAR being sized is the BAR if a
> > > bridge. Are you then adding a bridge device by hotplug?
> >
> > No, I just simply hot plugged a VFIO device to Bus 0, another
> > interesting phenomenon is If I hot plug the device to other bus, this 
> > doesn't
> happened.
> >
> > >
> > >
> > > > We didn't handle this value  specially while process pci write in
> > > > qemu, the function call stack is:
> > > >
> > > > Pci_bridge_dev_write_config
> > > >
> > > > -> pci_bridge_write_config
> > > >
> > > > -> pci_default_write_config (we update the config[address] value
> > > > -> here to
> > > > fffffffffc800000, which should be 0xfc800000 )
> > > >
> > > > -> pci_bridge_update_mappings
> > > >
> > > >                 ->pci_bridge_region_del(br, br->windows);
> > > >
> > > > -> pci_bridge_region_init
> > > >
> > > >                                                                 ->
> > > > pci_bridge_init_alias (here pci_bridge_get_base, we use the wrong
> > > > value
> > > > fffffffffc800000)
> > > >
> > > >                                                 ->
> > > > memory_region_transaction_commit
> > > >
> > > >
> > > >
> > > > So, as we can see, we use the wrong base address in qemu to update
> > > > the memory regions, though, we update the base address to
> > > >
> > > > The correct value after pci driver in VM write the original value
> > > > back, the virtio NIC in bus 4 may still sends net packets
> > > > concurrently with
> > > >
> > > > The wrong memory region address.
> > > >
> > > >
> > > >
> > > > We have tried to skip the memory region update action in qemu
> > > > while detect pci write with 0xffffffff value, and it does work,
> > > > but
> > > >
> > > > This seems to be not gently.
> > >
> > > For sure. But I'm still puzzled as to why does Linux try to size the
> > > BAR of the bridge while a device behind it is used.
> > >
> > > Can you pls post your QEMU command line?
> >
> > My QEMU command line:
> > /root/xyd/qemu-system-x86_64 -name guest=Linux,debug-threads=on -S
> > -object
> > secret,id=masterKey0,format=raw,file=/var/run/libvirt/qemu/domain-194-
> > Linux/master-key.aes -machine
> > pc-i440fx-2.8,accel=kvm,usb=off,dump-guest-core=off -cpu
> > host,+kvm_pv_eoi -bios /usr/share/OVMF/OVMF.fd -m
> > size=4194304k,slots=256,maxmem=33554432k -realtime mlock=off -smp
> > 20,sockets=20,cores=1,threads=1 -numa node,nodeid=0,cpus=0-4,mem=1024
> > -numa node,nodeid=1,cpus=5-9,mem=1024 -numa
> > node,nodeid=2,cpus=10-14,mem=1024 -numa
> > node,nodeid=3,cpus=15-19,mem=1024 -uuid
> > 34a588c7-b0f2-4952-b39c-47fae3411439 -no-user-config -nodefaults
> > -chardev
> > socket,id=charmonitor,path=/var/run/libvirt/qemu/domain-194-Linux/moni
> > tor.sock,server,nowait -mon
> > chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-hpet
> > -global kvm-pit.lost_tick_policy=delay -no-shutdown -boot strict=on
> > -device pci-bridge,chassis_nr=1,id=pci.1,bus=pci.0,addr=0x8 -device
> > pci-bridge,chassis_nr=2,id=pci.2,bus=pci.0,addr=0x9 -device
> > pci-bridge,chassis_nr=3,id=pci.3,bus=pci.0,addr=0xa -device
> > pci-bridge,chassis_nr=4,id=pci.4,bus=pci.0,addr=0xb -device
> > pci-bridge,chassis_nr=5,id=pci.5,bus=pci.0,addr=0xc -device
> > piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -device
> > usb-ehci,id=usb1,bus=pci.0,addr=0x10 -device
> > nec-usb-xhci,id=usb2,bus=pci.0,addr=0x11 -device
> > virtio-scsi-pci,id=scsi0,bus=pci.0,addr=0x3 -device
> > virtio-scsi-pci,id=scsi1,bus=pci.0,addr=0x4 -device
> > virtio-scsi-pci,id=scsi2,bus=pci.0,addr=0x5 -device
> > virtio-scsi-pci,id=scsi3,bus=pci.0,addr=0x6 -device
> > virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x7 -drive
> > file=/mnt/sdb/xml/centos_74_x64_uefi.raw,format=raw,if=none,id=drive-v
> > irtio-disk0,cache=none -device
> > virtio-blk-pci,scsi=off,bus=pci.0,addr=0x2,drive=drive-virtio-disk0,id
> > =virtio-disk0,bootindex=1 -drive
> > if=none,id=drive-ide0-1-1,readonly=on,cache=none -device
> > ide-cd,bus=ide.1,unit=1,drive=drive-ide0-1-1,id=ide0-1-1 -netdev
> > tap,fd=35,id=hostnet0 -device
> > virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:89:5d:8b,bus=pci.4
> > ,addr=0x1 -chardev pty,id=charserial0 -device
> > isa-serial,chardev=charserial0,id=serial0 -device
> > usb-tablet,id=input0,bus=usb.0,port=1 -vnc 0.0.0.0:0 -device
> > cirrus-vga,id=video0,vgamem_mb=8,bus=pci.0,addr=0x12 -device
> > virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0xd -msg timestamp=on
> >
> > I am also very curious about this issue, in the linux kernel code, maybe 
> > double
> check in function pci_bridge_check_ranges triggered this problem.
> 
> If you can get the stacktrace in Linux when it tries to write this fffff 
> value, that
> would be quite helpful.
> 

After I add mdelay(100) in function pci_bridge_check_ranges, this phenomenon is
easier to reproduce, below is my modify in kernel:
diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index cb389277..86e232d 100644
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -27,7 +27,7 @@
 #include <linux/slab.h>
 #include <linux/acpi.h>
 #include "pci.h"
-
+#include <linux/delay.h>
 unsigned int pci_flags;
 
 struct pci_dev_resource {
@@ -787,6 +787,9 @@ static void pci_bridge_check_ranges(struct pci_bus *bus)
                pci_write_config_dword(bridge, PCI_PREF_BASE_UPPER32,
                                               0xffffffff);
                pci_read_config_dword(bridge, PCI_PREF_BASE_UPPER32, &tmp);
+               mdelay(100);
+               printk(KERN_ERR "sleep\n");
+                dump_stack();
                if (!tmp)
                        b_res[2].flags &= ~IORESOURCE_MEM_64;
                pci_write_config_dword(bridge, PCI_PREF_BASE_UPPER32,

After hot plugging, we get the following log:

Dec 11 09:28:16 uefi-linux kernel: pci 0000:00:14.0: BAR 0: assigned [mem 
0xc2360000-0xc237ffff 64bit pref]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:00:14.0: BAR 3: assigned [mem 
0xc2328000-0xc232bfff 64bit pref]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:00:08.0: PCI bridge to [bus 01]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:00:08.0:   bridge window [io  
0xf000-0xffff]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:00:08.0:   bridge window [mem 
0xc2800000-0xc29fffff]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:00:08.0:   bridge window [mem 
0xc2b00000-0xc2cfffff 64bit pref]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:00:09.0: PCI bridge to [bus 02]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:00:09.0:   bridge window [io  
0xe000-0xefff]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:00:09.0:   bridge window [mem 
0xc2600000-0xc27fffff]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:00:09.0:   bridge window [mem 
0xc2d00000-0xc2efffff 64bit pref]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:00:0a.0: PCI bridge to [bus 03]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [io  
0xd000-0xdfff]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [mem 
0xc2400000-0xc25fffff]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [mem 
0xc2f00000-0xc30fffff 64bit pref]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:04:0c.0: PCI bridge to [bus 05]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:04:0c.0:   bridge window [io  
0xc000-0xcfff]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:04:0c.0:   bridge window [mem 
0xc2000000-0xc21fffff]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:00:08.0: PCI bridge to [bus 01]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:00:08.0:   bridge window [io  
0xf000-0xffff]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:00:08.0:   bridge window [mem 
0xc2800000-0xc29fffff]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:00:08.0:   bridge window [mem 
0xc2b00000-0xc2cfffff 64bit pref]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:00:09.0: PCI bridge to [bus 02]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:00:09.0:   bridge window [io  
0xe000-0xefff]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:00:09.0:   bridge window [mem 
0xc2600000-0xc27fffff]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:00:09.0:   bridge window [mem 
0xc2d00000-0xc2efffff 64bit pref]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:00:0a.0: PCI bridge to [bus 03]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [io  
0xd000-0xdfff]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [mem 
0xc2400000-0xc25fffff]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [mem 
0xc2f00000-0xc30fffff 64bit pref]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:04:0c.0: PCI bridge to [bus 05]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:04:0c.0:   bridge window [io  
0xc000-0xcfff]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:04:0c.0:   bridge window [mem 
0xc2000000-0xc21fffff]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:00:08.0: PCI bridge to [bus 01]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:00:08.0:   bridge window [io  
0xf000-0xffff]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:00:08.0:   bridge window [mem 
0xc2800000-0xc29fffff]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:00:08.0:   bridge window [mem 
0xc2b00000-0xc2cfffff 64bit pref]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:00:09.0: PCI bridge to [bus 02]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:00:09.0:   bridge window [io  
0xe000-0xefff]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:00:09.0:   bridge window [mem 
0xc2600000-0xc27fffff]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:00:09.0:   bridge window [mem 
0xc2d00000-0xc2efffff 64bit pref]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:00:0a.0: PCI bridge to [bus 03]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [io  
0xd000-0xdfff]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [mem 
0xc2400000-0xc25fffff]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [mem 
0xc2f00000-0xc30fffff 64bit pref]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:04:0c.0: PCI bridge to [bus 05]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:04:0c.0:   bridge window [io  
0xc000-0xcfff]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:04:0c.0:   bridge window [mem 
0xc2000000-0xc21fffff]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:00:08.0: PCI bridge to [bus 01]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:00:08.0:   bridge window [io  
0xf000-0xffff]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:00:08.0:   bridge window [mem 
0xc2800000-0xc29fffff]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:00:08.0:   bridge window [mem 
0xc2b00000-0xc2cfffff 64bit pref]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:00:09.0: PCI bridge to [bus 02]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:00:09.0:   bridge window [io  
0xe000-0xefff]
Dec 11 09:28:16 uefi-linux kernel: pci 0000:00:09.0:   bridge window [mem 
0xc2600000-0xc27fffff]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:09.0:   bridge window [mem 
0xc2d00000-0xc2efffff 64bit pref]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:0a.0: PCI bridge to [bus 03]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [io  
0xd000-0xdfff]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [mem 
0xc2400000-0xc25fffff]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [mem 
0xc2f00000-0xc30fffff 64bit pref]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:04:0c.0: PCI bridge to [bus 05]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:04:0c.0:   bridge window [io  
0xc000-0xcfff]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:04:0c.0:   bridge window [mem 
0xc2000000-0xc21fffff]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:08.0: PCI bridge to [bus 01]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:08.0:   bridge window [io  
0xf000-0xffff]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:08.0:   bridge window [mem 
0xc2800000-0xc29fffff]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:08.0:   bridge window [mem 
0xc2b00000-0xc2cfffff 64bit pref]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:09.0: PCI bridge to [bus 02]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:09.0:   bridge window [io  
0xe000-0xefff]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:09.0:   bridge window [mem 
0xc2600000-0xc27fffff]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:09.0:   bridge window [mem 
0xc2d00000-0xc2efffff 64bit pref]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:0a.0: PCI bridge to [bus 03]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [io  
0xd000-0xdfff]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [mem 
0xc2400000-0xc25fffff]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [mem 
0xc2f00000-0xc30fffff 64bit pref]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:04:0c.0: PCI bridge to [bus 05]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:04:0c.0:   bridge window [io  
0xc000-0xcfff]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:04:0c.0:   bridge window [mem 
0xc2000000-0xc21fffff]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:08.0: PCI bridge to [bus 01]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:08.0:   bridge window [io  
0xf000-0xffff]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:08.0:   bridge window [mem 
0xc2800000-0xc29fffff]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:08.0:   bridge window [mem 
0xc2b00000-0xc2cfffff 64bit pref]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:09.0: PCI bridge to [bus 02]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:09.0:   bridge window [io  
0xe000-0xefff]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:09.0:   bridge window [mem 
0xc2600000-0xc27fffff]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:09.0:   bridge window [mem 
0xc2d00000-0xc2efffff 64bit pref]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:0a.0: PCI bridge to [bus 03]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [io  
0xd000-0xdfff]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [mem 
0xc2400000-0xc25fffff]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [mem 
0xc2f00000-0xc30fffff 64bit pref]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:04:0c.0: PCI bridge to [bus 05]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:04:0c.0:   bridge window [io  
0xc000-0xcfff]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:04:0c.0:   bridge window [mem 
0xc2000000-0xc21fffff]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:08.0: PCI bridge to [bus 01]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:08.0:   bridge window [io  
0xf000-0xffff]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:08.0:   bridge window [mem 
0xc2800000-0xc29fffff]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:08.0:   bridge window [mem 
0xc2b00000-0xc2cfffff 64bit pref]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:09.0: PCI bridge to [bus 02]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:09.0:   bridge window [io  
0xe000-0xefff]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:09.0:   bridge window [mem 
0xc2600000-0xc27fffff]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:09.0:   bridge window [mem 
0xc2d00000-0xc2efffff 64bit pref]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:0a.0: PCI bridge to [bus 03]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [io  
0xd000-0xdfff]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [mem 
0xc2400000-0xc25fffff]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [mem 
0xc2f00000-0xc30fffff 64bit pref]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:04:0c.0: PCI bridge to [bus 05]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:04:0c.0:   bridge window [io  
0xc000-0xcfff]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:04:0c.0:   bridge window [mem 
0xc2000000-0xc21fffff]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:08.0: PCI bridge to [bus 01]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:08.0:   bridge window [io  
0xf000-0xffff]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:08.0:   bridge window [mem 
0xc2800000-0xc29fffff]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:08.0:   bridge window [mem 
0xc2b00000-0xc2cfffff 64bit pref]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:09.0: PCI bridge to [bus 02]
Dec 11 09:28:17 uefi-linux kernel: pci 0000:00:09.0:   bridge window [io  
0xe000-0xefff]
Dec 11 09:28:18 uefi-linux kernel: pci 0000:00:09.0:   bridge window [mem 
0xc2600000-0xc27fffff]
Dec 11 09:28:18 uefi-linux kernel: pci 0000:00:09.0:   bridge window [mem 
0xc2d00000-0xc2efffff 64bit pref]
Dec 11 09:28:18 uefi-linux kernel: pci 0000:00:0a.0: PCI bridge to [bus 03]
Dec 11 09:28:18 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [io  
0xd000-0xdfff]
Dec 11 09:28:18 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [mem 
0xc2400000-0xc25fffff]
Dec 11 09:28:18 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [mem 
0xc2f00000-0xc30fffff 64bit pref]
Dec 11 09:28:18 uefi-linux kernel: pci 0000:04:0c.0: PCI bridge to [bus 05]
Dec 11 09:28:18 uefi-linux kernel: pci 0000:04:0c.0:   bridge window [io  
0xc000-0xcfff]
Dec 11 09:28:18 uefi-linux kernel: pci 0000:04:0c.0:   bridge window [mem 
0xc2000000-0xc21fffff]
Dec 11 09:28:18 uefi-linux kernel: sleep
Dec 11 09:28:18 uefi-linux kernel: CPU: 16 PID: 502 Comm: kworker/u40:1 Not 
tainted 4.11.0-rc3+ #11
Dec 11 09:28:18 uefi-linux kernel: Hardware name: QEMU Standard PC (i440FX + 
PIIX, 1996), BIOS 0.0.0 02/06/2015
Dec 11 09:28:18 uefi-linux kernel: Workqueue: kacpi_hotplug acpi_hotplug_work_fn
Dec 11 09:28:18 uefi-linux kernel: Call Trace:
Dec 11 09:28:18 uefi-linux kernel: dump_stack+0x63/0x87
Dec 11 09:28:18 uefi-linux kernel: __pci_bus_size_bridges+0x931/0x960
Dec 11 09:28:18 uefi-linux kernel: ? dev_printk+0x4d/0x50
Dec 11 09:28:18 uefi-linux kernel: enable_slot+0x140/0x2f0
Dec 11 09:28:18 uefi-linux kernel: ? __pm_runtime_resume+0x5c/0x80
Dec 11 09:28:18 uefi-linux kernel: ? trim_stale_devices+0x9a/0x120
Dec 11 09:28:18 uefi-linux kernel: acpiphp_check_bridge.part.6+0xf5/0x120
Dec 11 09:28:18 uefi-linux kernel: acpiphp_hotplug_notify+0x145/0x1c0
Dec 11 09:28:18 uefi-linux kernel: ? acpiphp_post_dock_fixup+0xc0/0xc0
Dec 11 09:28:18 uefi-linux kernel: acpi_device_hotplug+0x3a6/0x3f3
Dec 11 09:28:18 uefi-linux kernel: acpi_hotplug_work_fn+0x1e/0x29
Dec 11 09:28:18 uefi-linux kernel: process_one_work+0x165/0x410
Dec 11 09:28:18 uefi-linux kernel: worker_thread+0x137/0x4c0
Dec 11 09:28:18 uefi-linux kernel: kthread+0x101/0x140
Dec 11 09:28:18 uefi-linux kernel: ? rescuer_thread+0x380/0x380
Dec 11 09:28:18 uefi-linux kernel: ? kthread_park+0x90/0x90
Dec 11 09:28:18 uefi-linux kernel: ret_from_fork+0x2c/0x40
Dec 11 09:28:18 uefi-linux kernel: pci 0000:00:08.0: PCI bridge to [bus 01]
Dec 11 09:28:18 uefi-linux kernel: pci 0000:00:08.0:   bridge window [io  
0xf000-0xffff]
Dec 11 09:28:18 uefi-linux kernel: pci 0000:00:08.0:   bridge window [mem 
0xc2800000-0xc29fffff]
Dec 11 09:28:18 uefi-linux kernel: pci 0000:00:08.0:   bridge window [mem 
0xc2b00000-0xc2cfffff 64bit pref]
Dec 11 09:28:18 uefi-linux kernel: pci 0000:00:09.0: PCI bridge to [bus 02]
Dec 11 09:28:18 uefi-linux kernel: pci 0000:00:09.0:   bridge window [io  
0xe000-0xefff]
Dec 11 09:28:18 uefi-linux kernel: pci 0000:00:09.0:   bridge window [mem 
0xc2600000-0xc27fffff]
Dec 11 09:28:18 uefi-linux kernel: pci 0000:00:09.0:   bridge window [mem 
0xc2d00000-0xc2efffff 64bit pref]
Dec 11 09:28:18 uefi-linux kernel: pci 0000:00:0a.0: PCI bridge to [bus 03]
Dec 11 09:28:18 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [io  
0xd000-0xdfff]
Dec 11 09:28:18 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [mem 
0xc2400000-0xc25fffff]
Dec 11 09:28:18 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [mem 
0xc2f00000-0xc30fffff 64bit pref]
Dec 11 09:28:18 uefi-linux kernel: pci 0000:04:0c.0: PCI bridge to [bus 05]
Dec 11 09:28:18 uefi-linux kernel: pci 0000:04:0c.0:   bridge window [io  
0xc000-0xcfff]
Dec 11 09:28:18 uefi-linux kernel: pci 0000:04:0c.0:   bridge window [mem 
0xc2000000-0xc21fffff]
Dec 11 09:28:18 uefi-linux kernel: sleep
Dec 11 09:28:18 uefi-linux kernel: CPU: 16 PID: 502 Comm: kworker/u40:1 Not 
tainted 4.11.0-rc3+ #11
Dec 11 09:28:18 uefi-linux kernel: Hardware name: QEMU Standard PC (i440FX + 
PIIX, 1996), BIOS 0.0.0 02/06/2015
Dec 11 09:28:18 uefi-linux kernel: Workqueue: kacpi_hotplug acpi_hotplug_work_fn
Dec 11 09:28:18 uefi-linux kernel: Call Trace:
Dec 11 09:28:18 uefi-linux kernel: dump_stack+0x63/0x87
Dec 11 09:28:18 uefi-linux kernel: __pci_bus_size_bridges+0x931/0x960
Dec 11 09:28:18 uefi-linux kernel: ? dev_printk+0x4d/0x50
Dec 11 09:28:18 uefi-linux kernel: enable_slot+0x140/0x2f0
Dec 11 09:28:18 uefi-linux kernel: ? __pm_runtime_resume+0x5c/0x80
Dec 11 09:28:18 uefi-linux kernel: ? trim_stale_devices+0x9a/0x120
Dec 11 09:28:18 uefi-linux kernel: acpiphp_check_bridge.part.6+0xf5/0x120
Dec 11 09:28:18 uefi-linux kernel: acpiphp_hotplug_notify+0x145/0x1c0
Dec 11 09:28:18 uefi-linux kernel: ? acpiphp_post_dock_fixup+0xc0/0xc0
Dec 11 09:28:18 uefi-linux kernel: acpi_device_hotplug+0x3a6/0x3f3
Dec 11 09:28:18 uefi-linux kernel: acpi_hotplug_work_fn+0x1e/0x29
Dec 11 09:28:18 uefi-linux kernel: process_one_work+0x165/0x410
Dec 11 09:28:18 uefi-linux kernel: worker_thread+0x137/0x4c0
Dec 11 09:28:18 uefi-linux kernel: kthread+0x101/0x140
Dec 11 09:28:18 uefi-linux kernel: ? rescuer_thread+0x380/0x380
Dec 11 09:28:18 uefi-linux kernel: ? kthread_park+0x90/0x90
Dec 11 09:28:18 uefi-linux kernel: ret_from_fork+0x2c/0x40
Dec 11 09:28:18 uefi-linux kernel: pci 0000:00:08.0: PCI bridge to [bus 01]
Dec 11 09:28:18 uefi-linux kernel: pci 0000:00:08.0:   bridge window [io  
0xf000-0xffff]
Dec 11 09:28:18 uefi-linux kernel: pci 0000:00:08.0:   bridge window [mem 
0xc2800000-0xc29fffff]
Dec 11 09:28:18 uefi-linux kernel: pci 0000:00:08.0:   bridge window [mem 
0xc2b00000-0xc2cfffff 64bit pref]
Dec 11 09:28:18 uefi-linux kernel: pci 0000:00:09.0: PCI bridge to [bus 02]
Dec 11 09:28:18 uefi-linux kernel: pci 0000:00:09.0:   bridge window [io  
0xe000-0xefff]
Dec 11 09:28:18 uefi-linux kernel: pci 0000:00:09.0:   bridge window [mem 
0xc2600000-0xc27fffff]
Dec 11 09:28:18 uefi-linux kernel: pci 0000:00:09.0:   bridge window [mem 
0xc2d00000-0xc2efffff 64bit pref]
Dec 11 09:28:18 uefi-linux kernel: pci 0000:00:0a.0: PCI bridge to [bus 03]
Dec 11 09:28:18 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [io  
0xd000-0xdfff]
Dec 11 09:28:18 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [mem 
0xc2400000-0xc25fffff]
Dec 11 09:28:18 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [mem 
0xc2f00000-0xc30fffff 64bit pref]
Dec 11 09:28:18 uefi-linux kernel: pci 0000:04:0c.0: PCI bridge to [bus 05]
Dec 11 09:28:18 uefi-linux kernel: pci 0000:04:0c.0:   bridge window [io  
0xc000-0xcfff]
Dec 11 09:28:18 uefi-linux kernel: pci 0000:04:0c.0:   bridge window [mem 
0xc2000000-0xc21fffff]
Dec 11 09:28:19 uefi-linux kernel: sleep
Dec 11 09:28:19 uefi-linux kernel: CPU: 17 PID: 502 Comm: kworker/u40:1 Not 
tainted 4.11.0-rc3+ #11
Dec 11 09:28:19 uefi-linux kernel: Hardware name: QEMU Standard PC (i440FX + 
PIIX, 1996), BIOS 0.0.0 02/06/2015
Dec 11 09:28:19 uefi-linux kernel: Workqueue: kacpi_hotplug acpi_hotplug_work_fn
Dec 11 09:28:19 uefi-linux kernel: Call Trace:
Dec 11 09:28:19 uefi-linux kernel: dump_stack+0x63/0x87
Dec 11 09:28:19 uefi-linux kernel: __pci_bus_size_bridges+0x931/0x960
Dec 11 09:28:19 uefi-linux kernel: ? dev_printk+0x4d/0x50
Dec 11 09:28:19 uefi-linux kernel: enable_slot+0x140/0x2f0
Dec 11 09:28:19 uefi-linux kernel: ? __pm_runtime_resume+0x5c/0x80
Dec 11 09:28:19 uefi-linux kernel: ? trim_stale_devices+0x9a/0x120
Dec 11 09:28:19 uefi-linux kernel: acpiphp_check_bridge.part.6+0xf5/0x120
Dec 11 09:28:19 uefi-linux kernel: acpiphp_hotplug_notify+0x145/0x1c0
Dec 11 09:28:19 uefi-linux kernel: ? acpiphp_post_dock_fixup+0xc0/0xc0
Dec 11 09:28:19 uefi-linux kernel: acpi_device_hotplug+0x3a6/0x3f3
Dec 11 09:28:19 uefi-linux kernel: acpi_hotplug_work_fn+0x1e/0x29
Dec 11 09:28:19 uefi-linux kernel: process_one_work+0x165/0x410
Dec 11 09:28:19 uefi-linux kernel: worker_thread+0x137/0x4c0
Dec 11 09:28:19 uefi-linux kernel: kthread+0x101/0x140
Dec 11 09:28:19 uefi-linux kernel: ? rescuer_thread+0x380/0x380
Dec 11 09:28:19 uefi-linux kernel: ? kthread_park+0x90/0x90
Dec 11 09:28:19 uefi-linux kernel: ret_from_fork+0x2c/0x40
Dec 11 09:28:19 uefi-linux kernel: pci 0000:00:08.0: PCI bridge to [bus 01]
Dec 11 09:28:19 uefi-linux kernel: pci 0000:00:08.0:   bridge window [io  
0xf000-0xffff]
Dec 11 09:28:19 uefi-linux kernel: pci 0000:00:08.0:   bridge window [mem 
0xc2800000-0xc29fffff]
Dec 11 09:28:19 uefi-linux kernel: pci 0000:00:08.0:   bridge window [mem 
0xc2b00000-0xc2cfffff 64bit pref]
Dec 11 09:28:19 uefi-linux kernel: pci 0000:00:09.0: PCI bridge to [bus 02]
Dec 11 09:28:19 uefi-linux kernel: pci 0000:00:09.0:   bridge window [io  
0xe000-0xefff]
Dec 11 09:28:19 uefi-linux kernel: pci 0000:00:09.0:   bridge window [mem 
0xc2600000-0xc27fffff]
Dec 11 09:28:19 uefi-linux kernel: pci 0000:00:09.0:   bridge window [mem 
0xc2d00000-0xc2efffff 64bit pref]
Dec 11 09:28:19 uefi-linux kernel: pci 0000:00:0a.0: PCI bridge to [bus 03]
Dec 11 09:28:19 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [io  
0xd000-0xdfff]
Dec 11 09:28:19 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [mem 
0xc2400000-0xc25fffff]
Dec 11 09:28:19 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [mem 
0xc2f00000-0xc30fffff 64bit pref]
Dec 11 09:28:19 uefi-linux kernel: pci 0000:04:0c.0: PCI bridge to [bus 05]
Dec 11 09:28:19 uefi-linux kernel: pci 0000:04:0c.0:   bridge window [io  
0xc000-0xcfff]
Dec 11 09:28:19 uefi-linux kernel: pci 0000:04:0c.0:   bridge window [mem 
0xc2000000-0xc21fffff]
Dec 11 09:28:19 uefi-linux kernel: sleep
Dec 11 09:28:19 uefi-linux kernel: CPU: 17 PID: 502 Comm: kworker/u40:1 Not 
tainted 4.11.0-rc3+ #11
Dec 11 09:28:19 uefi-linux kernel: Hardware name: QEMU Standard PC (i440FX + 
PIIX, 1996), BIOS 0.0.0 02/06/2015
Dec 11 09:28:19 uefi-linux kernel: Workqueue: kacpi_hotplug acpi_hotplug_work_fn
Dec 11 09:28:19 uefi-linux kernel: Call Trace:
Dec 11 09:28:19 uefi-linux kernel: dump_stack+0x63/0x87
Dec 11 09:28:19 uefi-linux kernel: __pci_bus_size_bridges+0x931/0x960
Dec 11 09:28:19 uefi-linux kernel: ? pci_conf1_read+0xba/0x100
Dec 11 09:28:19 uefi-linux kernel: __pci_bus_size_bridges+0xe9/0x960
Dec 11 09:28:19 uefi-linux kernel: ? dev_printk+0x4d/0x50
Dec 11 09:28:19 uefi-linux kernel: ? pcibios_allocate_rom_resources+0x45/0x80
Dec 11 09:28:19 uefi-linux kernel: enable_slot+0x140/0x2f0
Dec 11 09:28:19 uefi-linux kernel: ? trim_stale_devices+0x9a/0x120
Dec 11 09:28:19 uefi-linux kernel: ? __pm_runtime_resume+0x5c/0x80
Dec 11 09:28:19 uefi-linux kernel: ? trim_stale_devices+0x9a/0x120
Dec 11 09:28:19 uefi-linux kernel: acpiphp_check_bridge.part.6+0xf5/0x120
Dec 11 09:28:19 uefi-linux kernel: acpiphp_hotplug_notify+0x145/0x1c0
Dec 11 09:28:19 uefi-linux kernel: ? acpiphp_post_dock_fixup+0xc0/0xc0
Dec 11 09:28:19 uefi-linux kernel: acpi_device_hotplug+0x3a6/0x3f3
Dec 11 09:28:19 uefi-linux kernel: acpi_hotplug_work_fn+0x1e/0x29
Dec 11 09:28:19 uefi-linux kernel: process_one_work+0x165/0x410
Dec 11 09:28:19 uefi-linux kernel: worker_thread+0x137/0x4c0
Dec 11 09:28:19 uefi-linux kernel: kthread+0x101/0x140
Dec 11 09:28:19 uefi-linux kernel: ? rescuer_thread+0x380/0x380
Dec 11 09:28:19 uefi-linux kernel: ? kthread_park+0x90/0x90
Dec 11 09:28:19 uefi-linux kernel: ret_from_fork+0x2c/0x40
Dec 11 09:28:19 uefi-linux kernel: sleep
Dec 11 09:28:19 uefi-linux kernel: CPU: 17 PID: 502 Comm: kworker/u40:1 Not 
tainted 4.11.0-rc3+ #11
Dec 11 09:28:19 uefi-linux kernel: Hardware name: QEMU Standard PC (i440FX + 
PIIX, 1996), BIOS 0.0.0 02/06/2015
Dec 11 09:28:19 uefi-linux kernel: Workqueue: kacpi_hotplug acpi_hotplug_work_fn
Dec 11 09:28:19 uefi-linux kernel: Call Trace:
Dec 11 09:28:19 uefi-linux kernel: dump_stack+0x63/0x87
Dec 11 09:28:19 uefi-linux kernel: __pci_bus_size_bridges+0x931/0x960
Dec 11 09:28:19 uefi-linux kernel: ? dev_printk+0x4d/0x50
Dec 11 09:28:19 uefi-linux kernel: enable_slot+0x140/0x2f0
Dec 11 09:28:19 uefi-linux kernel: ? trim_stale_devices+0x9a/0x120
Dec 11 09:28:19 uefi-linux kernel: ? __pm_runtime_resume+0x5c/0x80
Dec 11 09:28:19 uefi-linux kernel: ? trim_stale_devices+0x9a/0x120
Dec 11 09:28:19 uefi-linux kernel: acpiphp_check_bridge.part.6+0xf5/0x120
Dec 11 09:28:19 uefi-linux kernel: acpiphp_hotplug_notify+0x145/0x1c0
Dec 11 09:28:19 uefi-linux kernel: ? acpiphp_post_dock_fixup+0xc0/0xc0
Dec 11 09:28:19 uefi-linux kernel: acpi_device_hotplug+0x3a6/0x3f3
Dec 11 09:28:19 uefi-linux kernel: acpi_hotplug_work_fn+0x1e/0x29
Dec 11 09:28:19 uefi-linux kernel: process_one_work+0x165/0x410
Dec 11 09:28:19 uefi-linux kernel: worker_thread+0x137/0x4c0
Dec 11 09:28:19 uefi-linux kernel: kthread+0x101/0x140
Dec 11 09:28:19 uefi-linux kernel: ? rescuer_thread+0x380/0x380
Dec 11 09:28:19 uefi-linux kernel: ? kthread_park+0x90/0x90
Dec 11 09:28:19 uefi-linux kernel: ret_from_fork+0x2c/0x40
Dec 11 09:28:19 uefi-linux kernel: pci 0000:00:08.0: PCI bridge to [bus 01]
Dec 11 09:28:19 uefi-linux kernel: pci 0000:00:08.0:   bridge window [io  
0xf000-0xffff]
Dec 11 09:28:19 uefi-linux kernel: pci 0000:00:08.0:   bridge window [mem 
0xc2800000-0xc29fffff]
Dec 11 09:28:19 uefi-linux kernel: pci 0000:00:08.0:   bridge window [mem 
0xc2b00000-0xc2cfffff 64bit pref]
Dec 11 09:28:19 uefi-linux kernel: pci 0000:00:09.0: PCI bridge to [bus 02]
Dec 11 09:28:19 uefi-linux kernel: pci 0000:00:09.0:   bridge window [io  
0xe000-0xefff]
Dec 11 09:28:19 uefi-linux kernel: pci 0000:00:09.0:   bridge window [mem 
0xc2600000-0xc27fffff]
Dec 11 09:28:19 uefi-linux kernel: pci 0000:00:09.0:   bridge window [mem 
0xc2d00000-0xc2efffff 64bit pref]
Dec 11 09:28:19 uefi-linux kernel: pci 0000:00:0a.0: PCI bridge to [bus 03]
Dec 11 09:28:19 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [io  
0xd000-0xdfff]
Dec 11 09:28:19 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [mem 
0xc2400000-0xc25fffff]
Dec 11 09:28:19 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [mem 
0xc2f00000-0xc30fffff 64bit pref]
Dec 11 09:28:19 uefi-linux kernel: pci 0000:04:0c.0: PCI bridge to [bus 05]
Dec 11 09:28:19 uefi-linux kernel: pci 0000:04:0c.0:   bridge window [io  
0xc000-0xcfff]
Dec 11 09:28:19 uefi-linux kernel: pci 0000:04:0c.0:   bridge window [mem 
0xc2000000-0xc21fffff]
Dec 11 09:28:19 uefi-linux kernel: pci 0000:00:08.0: PCI bridge to [bus 01]
Dec 11 09:28:19 uefi-linux kernel: pci 0000:00:08.0:   bridge window [io  
0xf000-0xffff]
Dec 11 09:28:19 uefi-linux kernel: pci 0000:00:08.0:   bridge window [mem 
0xc2800000-0xc29fffff]
Dec 11 09:28:19 uefi-linux kernel: pci 0000:00:08.0:   bridge window [mem 
0xc2b00000-0xc2cfffff 64bit pref]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:00:09.0: PCI bridge to [bus 02]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:00:09.0:   bridge window [io  
0xe000-0xefff]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:00:09.0:   bridge window [mem 
0xc2600000-0xc27fffff]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:00:09.0:   bridge window [mem 
0xc2d00000-0xc2efffff 64bit pref]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:00:0a.0: PCI bridge to [bus 03]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [io  
0xd000-0xdfff]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [mem 
0xc2400000-0xc25fffff]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [mem 
0xc2f00000-0xc30fffff 64bit pref]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:04:0c.0: PCI bridge to [bus 05]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:04:0c.0:   bridge window [io  
0xc000-0xcfff]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:04:0c.0:   bridge window [mem 
0xc2000000-0xc21fffff]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:00:08.0: PCI bridge to [bus 01]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:00:08.0:   bridge window [io  
0xf000-0xffff]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:00:08.0:   bridge window [mem 
0xc2800000-0xc29fffff]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:00:08.0:   bridge window [mem 
0xc2b00000-0xc2cfffff 64bit pref]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:00:09.0: PCI bridge to [bus 02]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:00:09.0:   bridge window [io  
0xe000-0xefff]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:00:09.0:   bridge window [mem 
0xc2600000-0xc27fffff]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:00:09.0:   bridge window [mem 
0xc2d00000-0xc2efffff 64bit pref]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:00:0a.0: PCI bridge to [bus 03]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [io  
0xd000-0xdfff]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [mem 
0xc2400000-0xc25fffff]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [mem 
0xc2f00000-0xc30fffff 64bit pref]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:04:0c.0: PCI bridge to [bus 05]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:04:0c.0:   bridge window [io  
0xc000-0xcfff]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:04:0c.0:   bridge window [mem 
0xc2000000-0xc21fffff]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:00:08.0: PCI bridge to [bus 01]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:00:08.0:   bridge window [io  
0xf000-0xffff]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:00:08.0:   bridge window [mem 
0xc2800000-0xc29fffff]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:00:08.0:   bridge window [mem 
0xc2b00000-0xc2cfffff 64bit pref]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:00:09.0: PCI bridge to [bus 02]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:00:09.0:   bridge window [io  
0xe000-0xefff]
Dec 11 09:28:20 uefi-linux kernel: psmouse serio1: VMMouse at 
isa0060/serio1/input0 lost sync at byte 1
Dec 11 09:28:20 uefi-linux kernel: pci 0000:00:09.0:   bridge window [mem 
0xc2600000-0xc27fffff]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:00:09.0:   bridge window [mem 
0xc2d00000-0xc2efffff 64bit pref]
Dec 11 09:28:20 uefi-linux kernel: psmouse serio1: VMMouse at 
isa0060/serio1/input0 - driver resynced.
Dec 11 09:28:20 uefi-linux kernel: psmouse serio1: VMMouse at 
isa0060/serio1/input0 lost sync at byte 1
Dec 11 09:28:20 uefi-linux kernel: pci 0000:00:0a.0: PCI bridge to [bus 03]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [io  
0xd000-0xdfff]
Dec 11 09:28:20 uefi-linux kernel: psmouse serio1: VMMouse at 
isa0060/serio1/input0 - driver resynced.
Dec 11 09:28:20 uefi-linux kernel: psmouse serio1: VMMouse at 
isa0060/serio1/input0 lost sync at byte 1
Dec 11 09:28:20 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [mem 
0xc2400000-0xc25fffff]
Dec 11 09:28:20 uefi-linux kernel: psmouse serio1: VMMouse at 
isa0060/serio1/input0 - driver resynced.
Dec 11 09:28:20 uefi-linux kernel: psmouse serio1: VMMouse at 
isa0060/serio1/input0 lost sync at byte 1
Dec 11 09:28:20 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [mem 
0xc2f00000-0xc30fffff 64bit pref]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:04:0c.0: PCI bridge to [bus 05]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:04:0c.0:   bridge window [io  
0xc000-0xcfff]
Dec 11 09:28:20 uefi-linux kernel: psmouse serio1: VMMouse at 
isa0060/serio1/input0 - driver resynced.
Dec 11 09:28:20 uefi-linux kernel: pci 0000:04:0c.0:   bridge window [mem 
0xc2000000-0xc21fffff]
Dec 11 09:28:20 uefi-linux kernel: psmouse serio1: VMMouse at 
isa0060/serio1/input0 lost sync at byte 1
Dec 11 09:28:20 uefi-linux kernel: pci 0000:00:08.0: PCI bridge to [bus 01]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:00:08.0:   bridge window [io  
0xf000-0xffff]
Dec 11 09:28:20 uefi-linux kernel: psmouse serio1: VMMouse at 
isa0060/serio1/input0 - driver resynced.
Dec 11 09:28:20 uefi-linux kernel: pci 0000:00:08.0:   bridge window [mem 
0xc2800000-0xc29fffff]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:00:08.0:   bridge window [mem 
0xc2b00000-0xc2cfffff 64bit pref]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:00:09.0: PCI bridge to [bus 02]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:00:09.0:   bridge window [io  
0xe000-0xefff]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:00:09.0:   bridge window [mem 
0xc2600000-0xc27fffff]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:00:09.0:   bridge window [mem 
0xc2d00000-0xc2efffff 64bit pref]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:00:0a.0: PCI bridge to [bus 03]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [io  
0xd000-0xdfff]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [mem 
0xc2400000-0xc25fffff]
Dec 11 09:28:20 uefi-linux kernel: psmouse serio1: VMMouse at 
isa0060/serio1/input0 lost sync at byte 1
Dec 11 09:28:20 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [mem 
0xc2f00000-0xc30fffff 64bit pref]
Dec 11 09:28:20 uefi-linux kernel: psmouse serio1: VMMouse at 
isa0060/serio1/input0 - driver resynced.
Dec 11 09:28:20 uefi-linux kernel: pci 0000:04:0c.0: PCI bridge to [bus 05]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:04:0c.0:   bridge window [io  
0xc000-0xcfff]
Dec 11 09:28:20 uefi-linux kernel: pci 0000:04:0c.0:   bridge window [mem 
0xc2000000-0xc21fffff]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:08.0: PCI bridge to [bus 01]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:08.0:   bridge window [io  
0xf000-0xffff]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:08.0:   bridge window [mem 
0xc2800000-0xc29fffff]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:08.0:   bridge window [mem 
0xc2b00000-0xc2cfffff 64bit pref]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:09.0: PCI bridge to [bus 02]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:09.0:   bridge window [io  
0xe000-0xefff]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:09.0:   bridge window [mem 
0xc2600000-0xc27fffff]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:09.0:   bridge window [mem 
0xc2d00000-0xc2efffff 64bit pref]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:0a.0: PCI bridge to [bus 03]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [io  
0xd000-0xdfff]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [mem 
0xc2400000-0xc25fffff]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [mem 
0xc2f00000-0xc30fffff 64bit pref]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:04:0c.0: PCI bridge to [bus 05]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:04:0c.0:   bridge window [io  
0xc000-0xcfff]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:04:0c.0:   bridge window [mem 
0xc2000000-0xc21fffff]
Dec 11 09:28:21 uefi-linux kernel: psmouse serio1: VMMouse at 
isa0060/serio1/input0 lost sync at byte 1
Dec 11 09:28:21 uefi-linux kernel: psmouse serio1: VMMouse at 
isa0060/serio1/input0 - driver resynced.
Dec 11 09:28:21 uefi-linux kernel: psmouse serio1: VMMouse at 
isa0060/serio1/input0 lost sync at byte 1
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:08.0: PCI bridge to [bus 01]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:08.0:   bridge window [io  
0xf000-0xffff]
Dec 11 09:28:21 uefi-linux kernel: psmouse serio1: VMMouse at 
isa0060/serio1/input0 - driver resynced.
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:08.0:   bridge window [mem 
0xc2800000-0xc29fffff]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:08.0:   bridge window [mem 
0xc2b00000-0xc2cfffff 64bit pref]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:09.0: PCI bridge to [bus 02]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:09.0:   bridge window [io  
0xe000-0xefff]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:09.0:   bridge window [mem 
0xc2600000-0xc27fffff]
Dec 11 09:28:21 uefi-linux kernel: psmouse serio1: VMMouse at 
isa0060/serio1/input0 lost sync at byte 1
Dec 11 09:28:21 uefi-linux kernel: psmouse serio1: VMMouse at 
isa0060/serio1/input0 lost sync at byte 1
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:09.0:   bridge window [mem 
0xc2d00000-0xc2efffff 64bit pref]
Dec 11 09:28:21 uefi-linux kernel: psmouse serio1: VMMouse at 
isa0060/serio1/input0 - driver resynced.
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:0a.0: PCI bridge to [bus 03]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [io  
0xd000-0xdfff]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [mem 
0xc2400000-0xc25fffff]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [mem 
0xc2f00000-0xc30fffff 64bit pref]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:04:0c.0: PCI bridge to [bus 05]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:04:0c.0:   bridge window [io  
0xc000-0xcfff]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:04:0c.0:   bridge window [mem 
0xc2000000-0xc21fffff]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:08.0: PCI bridge to [bus 01]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:08.0:   bridge window [io  
0xf000-0xffff]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:08.0:   bridge window [mem 
0xc2800000-0xc29fffff]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:08.0:   bridge window [mem 
0xc2b00000-0xc2cfffff 64bit pref]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:09.0: PCI bridge to [bus 02]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:09.0:   bridge window [io  
0xe000-0xefff]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:09.0:   bridge window [mem 
0xc2600000-0xc27fffff]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:09.0:   bridge window [mem 
0xc2d00000-0xc2efffff 64bit pref]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:0a.0: PCI bridge to [bus 03]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [io  
0xd000-0xdfff]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [mem 
0xc2400000-0xc25fffff]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [mem 
0xc2f00000-0xc30fffff 64bit pref]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:04:0c.0: PCI bridge to [bus 05]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:04:0c.0:   bridge window [io  
0xc000-0xcfff]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:04:0c.0:   bridge window [mem 
0xc2000000-0xc21fffff]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:08.0: PCI bridge to [bus 01]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:08.0:   bridge window [io  
0xf000-0xffff]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:08.0:   bridge window [mem 
0xc2800000-0xc29fffff]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:08.0:   bridge window [mem 
0xc2b00000-0xc2cfffff 64bit pref]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:09.0: PCI bridge to [bus 02]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:09.0:   bridge window [io  
0xe000-0xefff]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:09.0:   bridge window [mem 
0xc2600000-0xc27fffff]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:09.0:   bridge window [mem 
0xc2d00000-0xc2efffff 64bit pref]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:0a.0: PCI bridge to [bus 03]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [io  
0xd000-0xdfff]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [mem 
0xc2400000-0xc25fffff]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [mem 
0xc2f00000-0xc30fffff 64bit pref]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:04:0c.0: PCI bridge to [bus 05]
Dec 11 09:28:21 uefi-linux kernel: pci 0000:04:0c.0:   bridge window [io  
0xc000-0xcfff]
Dec 11 09:28:22 uefi-linux kernel: pci 0000:04:0c.0:   bridge window [mem 
0xc2000000-0xc21fffff]
Dec 11 09:28:22 uefi-linux kernel: pci 0000:00:08.0: PCI bridge to [bus 01]
Dec 11 09:28:22 uefi-linux kernel: pci 0000:00:08.0:   bridge window [io  
0xf000-0xffff]
Dec 11 09:28:22 uefi-linux kernel: pci 0000:00:08.0:   bridge window [mem 
0xc2800000-0xc29fffff]
Dec 11 09:28:22 uefi-linux kernel: pci 0000:00:08.0:   bridge window [mem 
0xc2b00000-0xc2cfffff 64bit pref]
Dec 11 09:28:22 uefi-linux kernel: pci 0000:00:09.0: PCI bridge to [bus 02]
Dec 11 09:28:22 uefi-linux kernel: pci 0000:00:09.0:   bridge window [io  
0xe000-0xefff]
Dec 11 09:28:22 uefi-linux kernel: pci 0000:00:09.0:   bridge window [mem 
0xc2600000-0xc27fffff]
Dec 11 09:28:22 uefi-linux kernel: pci 0000:00:09.0:   bridge window [mem 
0xc2d00000-0xc2efffff 64bit pref]
Dec 11 09:28:22 uefi-linux kernel: pci 0000:00:0a.0: PCI bridge to [bus 03]
Dec 11 09:28:22 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [io  
0xd000-0xdfff]
Dec 11 09:28:22 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [mem 
0xc2400000-0xc25fffff]
Dec 11 09:28:22 uefi-linux kernel: pci 0000:00:0a.0:   bridge window [mem 
0xc2f00000-0xc30fffff 64bit pref]
Dec 11 09:28:22 uefi-linux kernel: pci 0000:04:0c.0: PCI bridge to [bus 05]
Dec 11 09:28:22 uefi-linux kernel: pci 0000:04:0c.0:   bridge window [io  
0xc000-0xcfff]
Dec 11 09:28:22 uefi-linux kernel: pci 0000:04:0c.0:   bridge window [mem 
0xc2000000-0xc21fffff]

> >
> > >
> > >
> > >
> > > >
> > > >
> > > > diff --git a/hw/pci/pci_bridge.c b/hw/pci/pci_bridge.c
> > > >
> > > > index b2e50c3..84b405d 100644
> > > >
> > > > --- a/hw/pci/pci_bridge.c
> > > >
> > > > +++ b/hw/pci/pci_bridge.c
> > > >
> > > > @@ -256,7 +256,8 @@ void pci_bridge_write_config(PCIDevice *d,
> > > >
> > > >      pci_default_write_config(d, address, val, len);
> > > >
> > > > -    if (ranges_overlap(address, len, PCI_COMMAND, 2) ||
> > > >
> > > > +    if ( (val != 0xffffffff) &&
> > > >
> > > > +        (ranges_overlap(address, len, PCI_COMMAND, 2) ||
> > > >
> > > >          /* io base/limit */
> > > >
> > > >          ranges_overlap(address, len, PCI_IO_BASE, 2) ||
> > > >
> > > > @@ -266,7 +267,7 @@ void pci_bridge_write_config(PCIDevice *d,
> > > >
> > > >          ranges_overlap(address, len, PCI_MEMORY_BASE, 20) ||
> > > >
> > > >          /* vga enable */
> > > >
> > > > -        ranges_overlap(address, len, PCI_BRIDGE_CONTROL, 2)) {
> > > >
> > > > +        ranges_overlap(address, len, PCI_BRIDGE_CONTROL, 2))) {
> > > >
> > > >          pci_bridge_update_mappings(s);
> > > >
> > > >      }
> > > >
> > > >
> > > >
> > > > Thinks,
> > > >
> > > > Xu
> > > >
[Prev in Thread]
Current Thread
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[Qemu-devel] [BUG]Unassigned mem write during pci device hot-plug, xuyandong, 2018/12/08
- Re: [Qemu-devel] [BUG]Unassigned mem write during pci device hot-plug, Michael S. Tsirkin, 2018/12/09
  - Re: [Qemu-devel] [BUG]Unassigned mem write during pci device hot-plug, xuyandong, 2018/12/09
- Re: [Qemu-devel] [BUG]Unassigned mem write during pci device hot-plug, Michael S. Tsirkin, 2018/12/09
  - Re: [Qemu-devel] [BUG]Unassigned mem write during pci device hot-plug, xuyandong, 2018/12/09
    - Re: [Qemu-devel] [BUG]Unassigned mem write during pci device hot-plug, Michael S. Tsirkin, 2018/12/10
    - Re: [Qemu-devel] [BUG]Unassigned mem write during pci device hot-plug, xuyandong <=
    - Re: [Qemu-devel] [BUG]Unassigned mem write during pci device hot-plug, Michael S. Tsirkin, 2018/12/10
    - Re: [Qemu-devel] [BUG]Unassigned mem write during pci device hot-plug, xuyandong, 2018/12/10
    - Re: [Qemu-devel] [BUG]Unassigned mem write during pci device hot-plug, Michael S. Tsirkin, 2018/12/10
    - Re: [Qemu-devel] [BUG]Unassigned mem write during pci device hot-plug, xuyandong, 2018/12/10
    - Re: [Qemu-devel] [BUG]Unassigned mem write during pci device hot-plug, Michael S. Tsirkin, 2018/12/10
    - Re: [Qemu-devel] [BUG]Unassigned mem write during pci device hot-plug, Michael S. Tsirkin, 2018/12/10
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