[questions] about KVM as a Microsoft-compatible hypervisor

Zhang Haoyu

author

2014-06-30 01:40 UTC #0 lore raw

Hi, Vadim
I read the kvm-2012-forum paper < KVM as a Microsoft-compatible hypervisor>, Any update and other references, please?

Thanks,
Zhang Haoyu

Vadim Rozenfeld

2014-06-30 10:02 UTC #1 lore raw

Quoted 8 lines · Zhang Haoyu

Hi, Vadim
I read the kvm-2012-forum paper < KVM as a Microsoft-compatible hypervisor>, Any update and other references, please?
Thanks,
Zhang Haoyu

Unfortunately, not too much.

Quoted 1 line

From the the most recent, we have lazy eoi implemented by

MST and reference time counter.

Best regards,
Vadim.

Jidong Xiao

2014-06-30 10:19 UTC #2 lore raw

Quoted 10 lines · Vadim Rozenfeld

Quoted 8 lines · Zhang Haoyu
Hi, Vadim
I read the kvm-2012-forum paper < KVM as a Microsoft-compatible hypervisor>, Any update and other references, please?
Thanks,
Zhang Haoyu

Quoted 7 lines

Unfortunately, not too much.
From the the most recent, we have lazy eoi implemented by MST and reference time counter.
Best regards,
Vadim.

It looks like that Mircosoft has defined a large number of synthetic registers in their Hyper-v spec, so ultimately KVM should virtualize most of these registers, so as to support the Mircosoft Enlightment, right?

-Jidong

Vadim Rozenfeld

2014-06-30 11:36 UTC #3 lore raw

Quoted 18 lines · Jidong Xiao

Quoted 10 lines · Vadim Rozenfeld
Quoted 8 lines · Zhang Haoyu
Hi, Vadim
I read the kvm-2012-forum paper < KVM as a Microsoft-compatible hypervisor>, Any update and other references, please?
Thanks,
Zhang Haoyu
Quoted 7 lines
Unfortunately, not too much.
From the the most recent, we have lazy eoi implemented by MST and reference time counter.
Best regards,
Vadim.

Quoted 6 lines

It looks like that Mircosoft has defined a large number of synthetic registers in their Hyper-v spec, so ultimately KVM should virtualize most of these registers, so as to support the Mircosoft Enlightment, right?
-Jidong

Yes, but you don't have to support all the Hyper-V features at once. Hypervisor declares supported feature by specifying appropriate flags in Feature identification (0x40000003) and Implementation recommendations (0x40000004)CPUID leaves.

Best regards,
Vadim.

Quoted 4 lines

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Zhang Haoyu

author

2014-06-30 11:46 UTC #4 lore raw

Re: Re: [Qemu-devel] [questions] about KVM as a Microsoft-compatiblehypervisor

In reply to Vadim Rozenfeld

Quoted 4 lines

Quoted 4 lines
Hi, Vadim
I read the kvm-2012-forum paper < KVM as a Microsoft-compatible hypervisor>, Any update and other references, please?

Quoted 9 lines

Quoted 4 lines
Thanks,
Zhang Haoyu
Unfortunately, not too much.
From the the most recent, we have lazy eoi implemented by MST and reference time counter.

How to get the source of windows pv-eoi?
And what is "reference time counter", could you provide some references or code, please?

Thanks,
Zhang Haoyu

Quoted 2 lines

Best regards,
Vadim.

Vadim Rozenfeld

2014-06-30 12:18 UTC #5 lore raw

Re: [Qemu-devel] [questions] about KVM as a Microsoft-compatiblehypervisor

Quoted 9 lines · Zhang Haoyu

Quoted 9 lines
Quoted 8 lines
Hi, Vadim
I read the kvm-2012-forum paper < KVM as a Microsoft-compatible hypervisor>, Any update and other references, please?
Thanks,
Zhang Haoyu

Quoted 5 lines

Quoted 4 lines
Unfortunately, not too much.
From the the most recent, we have lazy eoi implemented by MST and reference time counter.
How to get the source of windows pv-eoi?

I'll be referencing to git://git.kernel.org/pub/scm/virt/kvm/kvm.git

for lazy eoi please take a look at commit:
b63cf42fd1d8c18fab71222321aaf356f63089c9

Quoted 1 line

And what is "reference time counter", could you provide some references or code, please?

Take a look at commit:
e984097b553ed2d6551c805223e4057421370f00

I also suggest reading Hypervisor Functional Specification 3.0a provided by Microsoft and available for downloading
from http://www.microsoft.com/en-au/download/details.aspx?id=39289

Best regards,
Vadim.

Quoted 8 lines

Thanks,
Zhang Haoyu
Quoted 2 lines
Best regards,
Vadim.

Zhang Haoyu

author

2014-08-04 02:17 UTC #6 lore raw

Re: [questions] about KVM as aMicrosoft-compatiblehypervisor

Hi, Vadim

I start a vm(windows server 2008 64bit) with below qemu command, get stuck with black screen during boot stage, no error report by qemu and kvm hypervisor, but if I remove the item "hv_vapic", then start and run the VM successfully.

/var/run/qemu-server/5195516385344.pid -daemonize -name win2008_iotest -smp sockets=1,cores=1 -cpu core2duo,hv_spinlocks=0xfffffff,hv_relaxed,hv_vapic -nodefaults -vga cirrus -no-hpet -k en-us -boot menu=on,splash-time=8000 -m 2048 -usb -drive if=none,id=drive-ide0,media=cdrom,aio=native,forecast=disable -device ide-cd,bus=ide.0,unit=0,drive=drive-ide0,id=ide0,bootindex=200 -drive file=/sf/data/3600605b006c126da1b0cde571ba48d0d_00e0ed2d202e/images/host-00e0ed2d202e/win2008_iotest.vm/vm-disk-1.qcow2,if=none,id=drive-virtio1,cache=writethrough,aio=native,forecast=disable -device virtio-blk-pci,drive=drive-virtio1,id=virtio1,bus=pci.0,addr=0xb -drive file=/sf/data/local/images/host-00e0ed2d202e/win2008_iotest.vm/vm-disk-1.qcow2,if=none,id=drive-virtio2,cache=writethrough,aio=native,forecast=d
isable -device virtio-blk-pci,drive=drive-virtio2,id=virtio2,bus=pci.0,addr=0xc,bootindex=101 -netdev type=tap,id=net0,ifname=519551638534400,script=/sf/etc/kvm/vtp-bridge,vhost=on,vhostforc
e=on -device virtio-net-pci,mac=FE:FC:FE:58:E0:81,netdev=net0,bus=pci.0,addr=0x12,id=net0,bootindex=300 -rtc driftfix=slew,clock=rt,base=localtime -global kvm-pit.lost_tick_policy=discard -global PIIX4_PM.disable_s3=1 -global PIIX4_PM.disable_s4=1 -post win2008_iotest -enable-kvm -L /boot/pc-bios

Seen similar problem before?
Any ideas?

Thanks,
Zhang Haoyu

Quoted 29 lines

Quoted 9 lines
Quoted 9 lines
Quoted 8 lines
Hi, Vadim
I read the kvm-2012-forum paper < KVM as a Microsoft-compatible hypervisor>, Any update and other references, please?
Thanks,
Zhang Haoyu
Quoted 5 lines
Quoted 4 lines
Unfortunately, not too much.
From the the most recent, we have lazy eoi implemented by MST and reference time counter.
How to get the source of windows pv-eoi?
I'll be referencing to git://git.kernel.org/pub/scm/virt/kvm/kvm.git
for lazy eoi please take a look at commit:
b63cf42fd1d8c18fab71222321aaf356f63089c9
Quoted 1 line
And what is "reference time counter", could you provide some references or code, please?
Take a look at commit:
e984097b553ed2d6551c805223e4057421370f00
I also suggest reading Hypervisor Functional Specification 3.0a provided by Microsoft and available for downloading
from http://www.microsoft.com/en-au/download/details.aspx?id=39289
Best regards,
Vadim.

Vadim Rozenfeld

2014-08-04 05:09 UTC #7 lore raw

Re: [Qemu-devel] [questions] about KVM as aMicrosoft-compatiblehypervisor

Hi Zhang,

No I haven't seen such problem
Which kernel version are you running?
Does it include the latest lazy eli changes?

Btw, hv_spinlocks=0xfffffff is a pretty huge value.

Best regards,
Vadim.

----- Original Message -----
From: "Zhang Haoyu" <[email protected]>
To: "Vadim Rozenfeld" <[email protected]>
Cc: "Jidong Xiao" <[email protected]>, "qemu-devel" <[email protected]>, "kvm" <[email protected]>
Sent: Monday, August 4, 2014 12:17:41 PM
Subject: Re: Re: [Qemu-devel] [questions] about KVM as aMicrosoft-compatiblehypervisor

Hi, Vadim

I start a vm(windows server 2008 64bit) with below qemu command, get stuck with black screen during boot stage, no error report by qemu and kvm hypervisor, but if I remove the item "hv_vapic", then start and run the VM successfully.

/var/run/qemu-server/5195516385344.pid -daemonize -name win2008_iotest -smp sockets=1,cores=1 -cpu core2duo,hv_spinlocks=0xfffffff,hv_relaxed,hv_vapic -nodefaults -vga cirrus -no-hpet -k en-us -boot menu=on,splash-time=8000 -m 2048 -usb -drive if=none,id=drive-ide0,media=cdrom,aio=native,forecast=disable -device ide-cd,bus=ide.0,unit=0,drive=drive-ide0,id=ide0,bootindex=200 -drive file=/sf/data/3600605b006c126da1b0cde571ba48d0d_00e0ed2d202e/images/host-00e0ed2d202e/win2008_iotest.vm/vm-disk-1.qcow2,if=none,id=drive-virtio1,cache=writethrough,aio=native,forecast=disable -device virtio-blk-pci,drive=drive-virtio1,id=virtio1,bus=pci.0,addr=0xb -drive file=/sf/data/local/images/host-00e0ed2d202e/win2008_iotest.vm/vm-disk-1.qcow2,if=none,id=drive-virtio2,cache=writethrough,aio=native,forecast=d
isable -device virtio-blk-pci,drive=drive-virtio2,id=virtio2,bus=pci.0,addr=0xc,bootindex=101 -netdev type=tap,id=net0,ifname=519551638534400,script=/sf/etc/kvm/vtp-bridge,vhost=on,vhostforc
e=on -device virtio-net-pci,mac=FE:FC:FE:58:E0:81,netdev=net0,bus=pci.0,addr=0x12,id=net0,bootindex=300 -rtc driftfix=slew,clock=rt,base=localtime -global kvm-pit.lost_tick_policy=discard -global PIIX4_PM.disable_s3=1 -global PIIX4_PM.disable_s4=1 -post win2008_iotest -enable-kvm -L /boot/pc-bios

Seen similar problem before?
Any ideas?

Thanks,
Zhang Haoyu

Quoted 23 lines

Quoted 9 lines
Quoted 9 lines
Quoted 8 lines
Hi, Vadim
I read the kvm-2012-forum paper < KVM as a Microsoft-compatible hypervisor>, Any update and other references, please?
Thanks,
Zhang Haoyu
Quoted 5 lines
Quoted 4 lines
Unfortunately, not too much.
From the the most recent, we have lazy eoi implemented by MST and reference time counter.
How to get the source of windows pv-eoi?
I'll be referencing to git://git.kernel.org/pub/scm/virt/kvm/kvm.git
for lazy eoi please take a look at commit:
b63cf42fd1d8c18fab71222321aaf356f63089c9
Quoted 1 line
And what is "reference time counter", could you provide some references or code, please?
Take a look at commit:
e984097b553ed2d6551c805223e4057421370f00

Quoted 6 lines

I also suggest reading Hypervisor Functional Specification 3.0a provided by Microsoft and available for downloading
from http://www.microsoft.com/en-au/download/details.aspx?id=39289
Best regards,
Vadim.

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To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html

Zhang Haoyu

author

2014-08-04 06:31 UTC #8 lore raw

Re: [Qemu-devel] [questions] about KVM asaMicrosoft-compatiblehypervisor

In reply to Zhang Haoyu

Quoted 4 lines

Hi Zhang,
No I haven't seen such problem
Which kernel version are you running?

Host kernel: RHEL7-RC1(linux-3.10.0).

Quoted 2 lines

Does it include the latest lazy eli changes?

lazy eli or lazy eoi?
How to confirm whether lazy eli has been included?

Quoted 2 lines

Btw, hv_spinlocks=0xfffffff is a pretty huge value.

which value do you advise to use?

Thanks,
Zhang Haoyu

Quoted 2 lines

Best regards,
Vadim.

Vadim Rozenfeld

2014-08-06 09:56 UTC #9 lore raw

Re: [Qemu-devel] [questions] about KVM asaMicrosoft-compatiblehypervisor

Quoted 9 lines · Zhang Haoyu

Quoted 4 lines
Hi Zhang,
No I haven't seen such problem
Which kernel version are you running?
Host kernel: RHEL7-RC1(linux-3.10.0).
Quoted 2 lines
Does it include the latest lazy eli changes?
lazy eli or lazy eoi?

EOI

Quoted 2 lines

How to confirm whether lazy eli has been included?

not in linux-3.10.0

Quoted 3 lines

Quoted 2 lines
Btw, hv_spinlocks=0xfffffff is a pretty huge value.
which value do you advise to use?

MS seems to be using 0xffff as a default.
best regards,
Vadim.

Quoted 7 lines

Thanks,
Zhang Haoyu
Quoted 2 lines
Best regards,
Vadim.

Zhang Haoyu

author

2014-08-08 03:53 UTC #10 lore raw

Re: [Qemu-devel] [questions] about KVMasaMicrosoft-compatiblehypervisor

Quoted 6 lines

Quoted 6 lines
Quoted 4 lines
Hi Zhang,
No I haven't seen such problem
Which kernel version are you running?
Host kernel: RHEL7-RC1(linux-3.10.0).

Quoted 7 lines

Quoted 3 lines
Quoted 2 lines
Does it include the latest lazy eli changes?
lazy eli or lazy eoi?
EOI
Quoted 2 lines
How to confirm whether lazy eli has been included?
not in linux-3.10.0

So, do you mean hv_vapic need the support of lazy eoi?

Quoted 11 lines

Quoted 3 lines
Quoted 2 lines
Btw, hv_spinlocks=0xfffffff is a pretty huge value.
which value do you advise to use?
MS seems to be using 0xffff as a default.
best regards,
Vadim.
Quoted 5 lines
Thanks,
Zhang Haoyu
Quoted 2 lines
Best regards,
Vadim.