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<p><font face="Liberation Sans"><span id="result_box" class=""
lang="en"><span>I did some tests with the buster packages;</span>
<span class="">on my stretch I installed the following
packages:</span></span></font></p>
<p><font face="Liberation Sans"><span id="result_box" class=""
lang="en"><span class=""><br>
</span></span></font></p>
<p><font face="Liberation Sans"><span id="result_box" class=""
lang="en"><span class="">ipxe-qemu_1.0.0+git-20161027.b991c67-1_all.deb<br>
libsdl2-2.0-0_2.0.8+dfsg1-1_amd64.deb<br>
libvirt0_4.0.0-2_amd64.deb<br>
libvirt-clients_4.0.0-2_amd64.deb<br>
libvirt-daemon_4.0.0-2_amd64.deb<br>
libvirt-daemon-system_4.0.0-2_amd64.deb<br>
libvirt-glib-1.0-0_1.0.0-1_amd64.deb<br>
libxss1_1.2.2-1+b2_amd64.deb<br>
python-libvirt_4.0.0-1_amd64.deb<br>
qemu-kvm_2.11+dfsg-1_amd64.deb<br>
qemu-system-common_2.11+dfsg-1_amd64.deb<br>
qemu-system-x86_2.11+dfsg-1_amd64.deb<br>
qemu-utils_2.11+dfsg-1_amd64.deb</span></span></font></p>
<p><font face="Liberation Sans"><span id="result_box" class=""
lang="en"><span class=""><br>
</span></span></font></p>
<p><font face="Liberation Sans"><span id="result_box" class=""
lang="en"><span class=""><span id="result_box" class=""
tabindex="-1" lang="en"><span class="">and now I can
confirm that if in the host system if the CPU is
configured "copy host CPU configuration" the system now
recognizes the EPYC cpu (but if I look in the list the
EPYC model from libvirt is not displayed, it does not
matter).</span><br>
</span></span></span><span id="result_box" class=""
tabindex="-1" lang="en"><span class="">Then, with the guest
system started, the EPYC CPU model is displayed, while in
the guest lscpu appears:</span></span></font></p>
<p><font face="Liberation Sans"><span id="result_box" class=""
lang="en"><span class=""><span id="result_box" class=""
tabindex="-1" lang="en"><span class=""><br>
</span></span></span></span></font></p>
<p><font size="-1" face="Liberation Sans"><span id="result_box"
class="" lang="en"><span class=""><span id="result_box"
class="" tabindex="-1" lang="en"><span class="">GUEST
LSCPU<br>
</span></span></span></span></font></p>
<p><font size="-1" face="Liberation Sans">Architecture:
x86_64<br>
CPU op-mode(s): 32-bit, 64-bit<br>
Byte Order: Little Endian<br>
CPU(s): 6<br>
On-line CPU(s) list: 0-5<br>
Thread(s) per core: 1<br>
Core(s) per socket: 1<br>
Socket(s): 6<br>
NUMA node(s): 1<br>
Vendor ID: AuthenticAMD<br>
CPU family: 23<br>
Model: 1<br>
Model name: AMD EPYC Processor<br>
Stepping: 2<br>
CPU MHz: 2199.996<br>
BogoMIPS: 4399.99<br>
Virtualization: AMD-V<br>
Hypervisor vendor: KVM<br>
Virtualization type: full<br>
L1d cache: 64K<br>
L1i cache: 64K<br>
L2 cache: 512K<br>
NUMA node0 CPU(s): 0-5</font></p>
<p><font size="-1" face="Liberation Sans"><span id="result_box"
class="" lang="en"><span class=""><span id="result_box"
class="" tabindex="-1" lang="en"><span class="">GUEST</span></span></span></span></font><font
face="Liberation Sans"> <font size="-1">DMESG</font></font></p>
<p><font size="-1" face="Liberation Sans">Mar 12 11:40:58 guest
kernel: [ 0.000000] kvm-clock: Using msrs 4b564d01 and
4b564d00<br>
Mar 12 11:40:58 guest kernel: [ 0.000000] kvm-clock: cpu 0,
msr 1:9fff1001, primary cpu clock<br>
Mar 12 11:40:58 guest kernel: [ 0.000000] Zone ranges:<br>
Mar 12 11:40:58 guest kernel: [ 0.000000] DMA [mem
0x00001000-0x00ffffff]<br>
Mar 12 11:40:58 guest kernel: [ 0.000000] DMA32 [mem
0x01000000-0xffffffff]<br>
Mar 12 11:40:58 guest kernel: [ 0.000000] Normal [mem
0x100000000-0x19fffffff]<br>
Mar 12 11:40:58 guest kernel: [ 0.000000] Movable zone start
for each node<br>
Mar 12 11:40:58 guest kernel: [ 0.000000] Early memory node
ranges<br>
Mar 12 11:40:58 guest kernel: [ 0.000000] node 0: [mem
0x00001000-0x0009efff]<br>
Mar 12 11:40:58 guest kernel: [ 0.000000] node 0: [mem
0x00100000-0xdfff6fff]<br>
Mar 12 11:40:58 guest kernel: [ 0.000000] node 0: [mem
0x100000000-0x19fffffff]<br>
Mar 12 11:40:58 guest kernel: [ 0.000000] ACPI: PM-Timer IO
Port: 0xb008<br>
Mar 12 11:40:58 guest kernel: [ 0.000000] KVM setup async PF
for cpu 0<br>
Mar 12 11:40:58 guest kernel: [ 0.000000] kvm-stealtime: cpu
0, msr 19fc0fc80<br>
Mar 12 11:40:58 guest kernel: [ 0.008000] kvm-clock: cpu 1,
msr 1:9fff1041, secondary cpu clock<br>
Mar 12 11:40:58 guest kernel: [ 0.049786] KVM setup async PF
for cpu 1<br>
Mar 12 11:40:58 guest kernel: [ 0.049786] kvm-stealtime: cpu
1, msr 19fc4fc80<br>
Mar 12 11:40:58 guest kernel: [ 0.049858] #2<br>
Mar 12 11:40:58 guest kernel: [ 0.008000] kvm-clock: cpu 2,
msr 1:9fff1081, secondary cpu clock<br>
Mar 12 11:40:58 guest kernel: [ 0.068519] #3<br>
Mar 12 11:40:58 guest kernel: [ 0.068442] KVM setup async PF
for cpu 2<br>
Mar 12 11:40:58 guest kernel: [ 0.068442] kvm-stealtime: cpu
2, msr 19fc8fc80<br>
Mar 12 11:40:58 guest kernel: [ 0.008000] kvm-clock: cpu 3,
msr 1:9fff10c1, secondary cpu clock<br>
Mar 12 11:40:58 guest kernel: [ 0.085417] KVM setup async PF
for cpu 3<br>
Mar 12 11:40:58 guest kernel: [ 0.085417] kvm-stealtime: cpu
3, msr 19fccfc80<br>
Mar 12 11:40:58 guest kernel: [ 0.085491] #4<br>
Mar 12 11:40:58 guest kernel: [ 0.008000] kvm-clock: cpu 4,
msr 1:9fff1101, secondary cpu clock<br>
Mar 12 11:40:58 guest kernel: [ 0.102388] KVM setup async PF
for cpu 4<br>
Mar 12 11:40:58 guest kernel: [ 0.102388] kvm-stealtime: cpu
4, msr 19fd0fc80<br>
Mar 12 11:40:58 guest kernel: [ 0.102471] #5<br>
Mar 12 11:40:58 guest kernel: [ 0.008000] kvm-clock: cpu 5,
msr 1:9fff1141, secondary cpu clock<br>
Mar 12 11:40:58 guest kernel: [ 0.119380] x86: Booted up 1
node, 6 CPUs<br>
Mar 12 11:40:58 guest kernel: [ 0.119382] smpboot: Total of 6
processors activated (26399.95 BogoMIPS)<br>
Mar 12 11:40:58 guest kernel: [ 0.119369] KVM setup async PF
for cpu 5<br>
Mar 12 11:40:58 guest kernel: [ 0.119369] kvm-stealtime: cpu
5, msr 19fd4fc80<br>
</font></p>
<p><font face="Liberation Sans"><br>
</font></p>
<p><font face="Liberation Sans"><span id="result_box" class=""
tabindex="-1" lang="en"><span class="">There remains only a
defect on the host machine that once started appears this
error, can you help me to understand what could be?</span></span></font></p>
<p><font size="-1" face="Liberation Sans">HOST DMESG<br>
</font></p>
<p><font size="-1" face="Liberation Sans">Mar 12 11:40:57 host
kernel: [ 1529.452338] kvm [13298]: vcpu1, guest rIP:
0xffffffff81053b72 unhandled rdmsr: 0x3a<br>
Mar 12 11:40:57 host kernel: [ 1529.452426] kvm [13298]: vcpu1,
guest rIP: 0xffffffff81053b72 unhandled rdmsr: 0xd90</font><font
face="Liberation Sans"><br>
</font></p>
<font face="Liberation Sans"><span id="result_box" class=""
tabindex="-1" lang="en"><span class="">However, in the future
this solution may not work because the gap between the buster
and the stretch may be wider, so the dependency chain may
break.<br>
<br>
Diego<br>
</span></span></font><br>
<br>
<br>
<br>
<div class="moz-cite-prefix">Il 12/03/2018 09:49, Raschi Diego ha
scritto:<br>
</div>
<blockquote type="cite"
cite="mid:1e5aa42c-29ee-f0d4-7dd9-4f9dd17e1b26@bsi.sm">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<p><span id="result_box" class="" tabindex="-1" lang="en"><span>I
agree that the change should be made for both libvirt and
qemu, in fact I know that this escalation was made.</span><br>
<br>
<span><a class="moz-txt-link-freetext"
href="https://bugzilla.redhat.com/show_bug.cgi?id=1445834"
moz-do-not-send="true">https://bugzilla.redhat.com/show_bug.cgi?id=1445834</a></span><br>
<br>
<span>I could use the emulation of another cpu to remedy the
problem, but instead of having a supercpu without
introducing transcoding of the processor I would have very
degraded performance.</span><br>
<br>
<span>Another solution would be that as you mentioned to use
buster packages, I try to install the new packages and I
hope I do not run into an endless series of installs for
library dependencies.</span><br>
<br>
<span class="">In the meantime, I thank you for your time and
I will keep you updated.</span><br>
<span>Diego</span></span></p>
<br>
<div class="moz-cite-prefix">Il 11/03/2018 12:55, Guido Günther ha
scritto:<br>
</div>
<blockquote type="cite"
cite="mid:20180311115529.GA5352@bogon.m.sigxcpu.org">
<pre wrap="">On Fri, Mar 09, 2018 at 03:17:57PM +0100, Raschi Diego wrote:
</pre>
<blockquote type="cite">
<pre wrap="">I apologize for the inconvenience, I made a copy mistake
<a class="moz-txt-link-freetext" href="https://bugzilla.redhat.com/show_bug.cgi?id=1481252" moz-do-not-send="true">https://bugzilla.redhat.com/show_bug.cgi?id=1481252</a>
</pre>
</blockquote>
<pre wrap="">As far as I read this it's not related to the problem you're seeing and
if we add this qemu woul need support as well:
<a class="moz-txt-link-freetext" href="https://bugzilla.redhat.com/show_bug.cgi?id=1445834" moz-do-not-send="true">https://bugzilla.redhat.com/show_bug.cgi?id=1445834</a>
but is should work without it nevertheless using another CPU model.
This:
kernel: [ 2.623548] kvm: no hardware support
means likely that virtualization is not enabled on your machine. Can
you run accelerated VMs using only qemu but not libvirt? Does it work
with debian buster?
Cheers,
-- Guido
</pre>
</blockquote>
<br>
</blockquote>
<br>
<br>
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