[Qemu-devel] Full Virtualization Mode Crashs Kernel on Guest Machine

[Qemu-devel] Full Virtualization Mode Crashs Kernel on Guest Machine

[Cai Qian]

[-- Attachment #1: Type: text/plain, Size: 340 bytes --]

Hi,

When I use -kernel-kqemu option, it crash the guest machine's kernel.
The command is,

qemu-system-x86_64 -kernel-kqemu -k en-gb -m 400M -net nic, -net tap foobar.img

The log can be found in attachment.

System Information,

qemu-0.8.2
kqemu-1.3.0pre9
linux-2.6.16 (host)
Ubuntu edgy x86_64
linux-2.6.12-9-amd64-generic (guest)

Qian

[-- Attachment #2: kqemu.log --]
[-- Type: text/x-log, Size: 931 bytes --]

RAX=00000000fffb6c3c RBX=000000000000003c RCX=ffffffff80392f38 RDX=00000000fffb6c3d
RSI=ffffffff803a6950 RDI=ffffffff803a6940 RBP=ffffffff803a60b0 RSP=ffffffff80392f58
R8 =00000000000ca882 R9 =00000000000ca882 R10=00000000000003e8 R11=0000000000000000
R12=ffffffff80392f38 R13=0000000000000000 R14=0000000000000000 R15=0000000000000000
RIP=ffffffff80133bea RFL=00000082 [--S----] CPL=0 II=0 A20=1 HLT=0
ES =0018 0000000000000000 ffffffff 00cff300
CS =0010 0000000000000000 ffffffff 00affb00
SS =0018 0000000000000000 ffffffff 00cff300
DS =0018 0000000000000000 ffffffff 00cff300
FS =0000 0000000000000000 00000000 00000000
GS =0000 ffffffff803d8b80 00000000 00000000
LDT=0000 0000000000000000 00000000 00008000
TR =0040 ffffffff80398000 0000207f 80008939
GDT=     ffffffff802e0980 00000080
IDT=     ffffffff802e0a00 00001000
CR0=8005003b CR2=0000000000000000 CR3=0000000000101000 CR4=000006a0
Unsupported return value: 0xffffffff

Re: [Qemu-devel] Full Virtualization Mode Crashs Kernel on Guest Machine

[Fabrice Bellard]

Hi,

Full virtualization (-kernel-kqemu option) is currently not supported 
for 64 bit guest OSes (to be exact it is implemented but not debugged 
yet !). I just added a note in the online kqemu documentation.

Regards,

Fabrice.

Cai Qian wrote:
> Hi,
> 
> When I use -kernel-kqemu option, it crash the guest machine's kernel.
> The command is,
> 
> qemu-system-x86_64 -kernel-kqemu -k en-gb -m 400M -net nic, -net tap 
> foobar.img
> 
> The log can be found in attachment.
> 
> System Information,
> 
> qemu-0.8.2
> kqemu-1.3.0pre9
> linux-2.6.16 (host)
> Ubuntu edgy x86_64
> linux-2.6.12-9-amd64-generic (guest)
> 
> Qian
> 
> 
> ------------------------------------------------------------------------
> 
> RAX=00000000fffb6c3c RBX=000000000000003c RCX=ffffffff80392f38 RDX=00000000fffb6c3d
> RSI=ffffffff803a6950 RDI=ffffffff803a6940 RBP=ffffffff803a60b0 RSP=ffffffff80392f58
> R8 =00000000000ca882 R9 =00000000000ca882 R10=00000000000003e8 R11=0000000000000000
> R12=ffffffff80392f38 R13=0000000000000000 R14=0000000000000000 R15=0000000000000000
> RIP=ffffffff80133bea RFL=00000082 [--S----] CPL=0 II=0 A20=1 HLT=0
> ES =0018 0000000000000000 ffffffff 00cff300
> CS =0010 0000000000000000 ffffffff 00affb00
> SS =0018 0000000000000000 ffffffff 00cff300
> DS =0018 0000000000000000 ffffffff 00cff300
> FS =0000 0000000000000000 00000000 00000000
> GS =0000 ffffffff803d8b80 00000000 00000000
> LDT=0000 0000000000000000 00000000 00008000
> TR =0040 ffffffff80398000 0000207f 80008939
> GDT=     ffffffff802e0980 00000080
> IDT=     ffffffff802e0a00 00001000
> CR0=8005003b CR2=0000000000000000 CR3=0000000000101000 CR4=000006a0
> Unsupported return value: 0xffffffff
> 
> 
> 
> ------------------------------------------------------------------------
> 
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