Pre Post capabilities on a new AMD system
ubuntu@riccioli:~$ diff -Naur old.c.xml new.c.xml --- old.c.xml 2019-08-22 12:51:25.065200903 +0000 +++ new.c.xml 2019-08-22 12:52:08.042076692 +0000 @@ -26,6 +26,7 @@ <feature name='perfctr_core'/> <feature name='perfctr_nb'/> <feature name='invtsc'/> + <feature name='amd-ssbd'/> <pages unit='KiB' size='4'/> <pages unit='KiB' size='2048'/> <pages unit='KiB' size='1048576'/>
domcapabilities @@ -28,6 +28,7 @@ <feature policy='require' name='clwb'/> <feature policy='require' name='cmp_legacy'/> <feature policy='require' name='invtsc'/> + <feature policy='require' name='amd-ssbd'/> <feature policy='disable' name='monitor'/> </mode> <mode name='custom' supported='yes'>
With that feature set I see <feature policy='require' name='amd-ssbd'/> converted to -cpu EPYC-IBPB,...,amd-ssbd=on And the guest starts fine with it.
And the same way <feature policy='disable' name='amd-ssbd'/> becomes ,amd-ssbd=off
Things seem fine, but as I got access I wanted to pre check this for the SRU.
Pre Post capabilities on a new AMD system
ubuntu@riccioli:~$ diff -Naur old.c.xml new.c.xml core'/>
--- old.c.xml 2019-08-22 12:51:25.065200903 +0000
+++ new.c.xml 2019-08-22 12:52:08.042076692 +0000
@@ -26,6 +26,7 @@
<feature name='perfctr_
<feature name='perfctr_nb'/>
<feature name='invtsc'/>
+ <feature name='amd-ssbd'/>
<pages unit='KiB' size='4'/>
<pages unit='KiB' size='2048'/>
<pages unit='KiB' size='1048576'/>
domcapabilities
@@ -28,6 +28,7 @@
<feature policy='require' name='clwb'/>
<feature policy='require' name='cmp_legacy'/>
<feature policy='require' name='invtsc'/>
+ <feature policy='require' name='amd-ssbd'/>
<feature policy='disable' name='monitor'/>
</mode>
<mode name='custom' supported='yes'>
With that feature set I see ...,amd- ssbd=on
<feature policy='require' name='amd-ssbd'/>
converted to
-cpu EPYC-IBPB,
And the guest starts fine with it.
And the same way
<feature policy='disable' name='amd-ssbd'/>
becomes
,amd-ssbd=off
Things seem fine, but as I got access I wanted to pre check this for the SRU.