el
release reported there is difficult):
https://bugs.debian.org/1010026#42
Both ends up with
qemu-system-x86_64: error: failed to set MSR 0xc104 to 0x1
qemu-system-x86_64: ../../target/i386/kvm/kvm.c:2996: kvm_buf_set_msrs:
Assertion `ret == cpu->kvm_msr_buf->nmsrs'
Paolo, Million thanks.
I will try to dig into this code in my spare time.
Thanks,
Feng Li
Paolo Bonzini 于2020年5月20日周三 下午6:27写道：
>
> On 20/05/20 12:15, Li Feng wrote:
> > /root/qemu-master/x86_64-softmmu/qemu-system-x86_64 -enable-kvm
> > -device virtio-balloon -cpu
> > host,-vmx-exit-nosave-deb
On 20/05/20 12:15, Li Feng wrote:
> /root/qemu-master/x86_64-softmmu/qemu-system-x86_64 -enable-kvm
> -device virtio-balloon -cpu
> host,-vmx-exit-nosave-debugctl,-vmx-exit-ack-intr,-vmx-exit-save-pat,-vmx-exit-load-pat,-vmx-exit-save-efer,-vmx-exit-load-efer,-vmx-exit-save-preemption-timer
> -smp
Paolo Bonzini 于2020年5月20日周三 下午6:10写道：
>
> On 20/05/20 11:36, Li Feng wrote:
> >> Can you do "rdmsr 0x48f" (as root)? On my machine for example I get
> >> 1ff00036dfb.
> >>
> > $ rdmsr 0x48f
> > 3f00036dfb
> >
>
> Hmm, weird. What is exactly your QEMU command line?
>
/root/qemu-master/x86
On 20/05/20 11:36, Li Feng wrote:
>> Can you do "rdmsr 0x48f" (as root)? On my machine for example I get
>> 1ff00036dfb.
>>
> $ rdmsr 0x48f
> 3f00036dfb
>
Hmm, weird. What is exactly your QEMU command line?
Paolo
Paolo Bonzini 于2020年5月20日周三 下午5:34写道：
>
> On 20/05/20 10:55, Li Feng wrote:
> >>> After computing xor, the result is 0b10.
> >>> The bit 9 is set.
> >> Are you running KVM with a 32-bit kernel.
> >>
> > No, I'm running 64 bit.
> >
> > $ uname -a
> > Linux 31_216 5.6.7-1.el7.centos.x86_64 #
On 20/05/20 10:55, Li Feng wrote:
>>> After computing xor, the result is 0b10.
>>> The bit 9 is set.
>> Are you running KVM with a 32-bit kernel.
>>
> No, I'm running 64 bit.
>
> $ uname -a
> Linux 31_216 5.6.7-1.el7.centos.x86_64 #1 SMP Mon Apr 27 15:26:08 CST
> 2020 x86_64 x86_64 x86_64
Paolo Bonzini 于2020年5月20日周三 下午4:32写道：
>
> On 20/05/20 10:22, Li Feng wrote:
> >> - bit 2, vmx-exit-nosave-debugctl
> >> - bit 9, host address space size, is handled automatically by QEMU
> >> - bit 15, vmx-exit-ack-intr
> >> - bit 17, vmx-exit-save-pat
> >> - bit 18, vmx-exit-load-pat
> >> - bit 1
On 20/05/20 10:22, Li Feng wrote:
>> - bit 2, vmx-exit-nosave-debugctl
>> - bit 9, host address space size, is handled automatically by QEMU
>> - bit 15, vmx-exit-ack-intr
>> - bit 17, vmx-exit-save-pat
>> - bit 18, vmx-exit-load-pat
>> - bit 19, vmx-exit-save-efer
>> - bit 20, vmx-exit-load-efer
>
Paolo Bonzini 于2020年5月20日周三 下午3:28写道：
>
> On 20/05/20 05:50, Li Feng wrote:
> > qemu-system-x86_64: error: failed to set MSR 0x48f to
> > 0x7fefff00036dfb
>
> The high 32 bits are 0111 1110 .
>
> The low 32 bits are 0011 0110 1101 1011.
>
> The featur
On 20/05/20 05:50, Li Feng wrote:
> qemu-system-x86_64: error: failed to set MSR 0x48f to 0x7fefff00036dfb
The high 32 bits are 0111 1110 .
The low 32 bits are 0011 0110 1101 1011.
The features that are set are the xor, so 0111 1100 1000 0010 0100:
- b
virtio-balloon -cpu host -smp 4 -m 2G -drive
> > > > > > > > file=/root/html/fedora-10g.img,format=raw,cache=none,aio=native,if=none,id=drive-virtio-disk1
> > > > > > > > -device
> > > > > > > > virtio-blk-pci,scsi=off,drive=drive-virtio-disk1,id
gt; > > > -device
> > > > > > > virtio-blk-pci,scsi=off,drive=drive-virtio-disk1,id=virtio-disk1,bootindex=1
> > > > > > > -device virtio-net,netdev=nw1,mac=00:11:22:EE:EE:10 -netdev
> > > > > > > tap,id=nw1,script=no,downscri
00:11:22:EE:EE:10 -netdev
> > > > > > tap,id=nw1,script=no,downscript=no,ifname=tap0 -serial mon:stdio
> > > > > > -nographic -object
> > > > > > memory-backend-file,id=mem0,size=2G,mem-path=/dev/hugepages,share=on
> > > > > > -num
> > memory-backend-file,id=mem0,size=2G,mem-path=/dev/hugepages,share=on
> > > > > -numa node,memdev=mem0 -vnc 0.0.0.0:100 -machine usb=on,nvdimm -device
> > > > > usb-tablet -monitor unix:///tmp/a.socket,server,nowait -device
> > > > &
t; > usb-tablet -monitor unix:///tmp/a.socket,server,nowait -device
> > > > virtio-serial-pci,id=virtio-serial0,max_ports=16 -chardev
> > > > socket,id=channel1,path=/tmp/helloworld1,server,nowait -device
> > > > virtserialport,chardev=channel1,name=com.redhat.rhevm.
ts=16 -chardev
> > > > socket,id=channel1,path=/tmp/helloworld1,server,nowait -device
> > > > virtserialport,chardev=channel1,name=com.redhat.rhevm.vdsm1,bus=virtio-serial0.0,id=port1
> > > > -qmp tcp:0.0.0.0:2234,server,nowait
> > > > qemu-system-x86_
irtio-serial0,max_ports=16 -chardev
> > > socket,id=channel1,path=/tmp/helloworld1,server,nowait -device
> > > virtserialport,chardev=channel1,name=com.redhat.rhevm.vdsm1,bus=virtio-serial0.0,id=port1
> > > -qmp tcp:0.0.0.0:2234,server,nowait
> > > qemu-system-x86_
-serial0.0,id=port1
>> > -qmp tcp:0.0.0.0:2234,server,nowait
>> > qemu-system-x86_64: error: failed to set MSR 0x48f to 0x7fefff00036dfb
>> > qemu-system-x86_64: /root/qemu-master/target/i386/kvm.c:2695:
>> > kvm_buf_set_msrs: Assertion `ret == cpu->kvm_msr_buf
t; > socket,id=channel1,path=/tmp/helloworld1,server,nowait -device
> > virtserialport,chardev=channel1,name=com.redhat.rhevm.vdsm1,bus=virtio-serial0.0,id=port1
> > -qmp tcp:0.0.0.0:2234,server,nowait
> > qemu-system-x86_64: error: failed to set MSR 0x48f to 0x7fefff000
qemu-system-x86_64: /root/qemu-master/target/i386/kvm.c:2695:
kvm_buf_set_msrs: Assertion `ret == cpu->kvm_msr_buf->nmsrs' failed.
This is the commit record:
* c88f1ffc19 - (origin/master, origin/HEAD) Merge remote-tracking
branch 'remotes/kevin/tags/for-upstream'
`ret == cpu->kvm_msr_buf->nmsrs' failed.
This is the commit record:
* c88f1ffc19 - (origin/master, origin/HEAD) Merge remote-tracking
branch 'remotes/kevin/tags/for-upstream' into staging (3 days ago)
|\
| * 47e0b38a13 - block: Drop unused .bdrv_has_zero_init
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