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https://issues.apache.org/jira/browse/CLOUDSTACK-10232?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16388047#comment-16388047
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ASF GitHub Bot commented on CLOUDSTACK-10232:
---------------------------------------------

khos2ow commented on issue #2465: CLOUDSTACK-10232: SystemVMs and VR to run as 
HVM on XenServer
URL: https://github.com/apache/cloudstack/pull/2465#issuecomment-370840118
 
 
   @syed awesome, thanks!
   
   @pdion891 yes that's correct, it uses Debian 9 since 4.11. Would you say 
there will be a lot of difference - in terms of performance - between Debian 7 
and 9? In terms of functionality should be fine though.

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> SystemVMs and VR to run as HVM on XenServer
> -------------------------------------------
>
>                 Key: CLOUDSTACK-10232
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-10232
>             Project: CloudStack
>          Issue Type: New Feature
>      Security Level: Public(Anyone can view this level - this is the 
> default.) 
>          Components: SystemVM, Virtual Router, XenServer
>    Affects Versions: 4.10.0.0, 4.9.3.0
>            Reporter: Pierre-Luc Dion
>            Priority: Major
>
> Following the recent Meltdown-Spectre security risk,one of the mitigation,as 
> of Jan 2018, for XenServer Hypervisor is to run Virtual-Machine in HVM mode.
> Currently SystemVMs and Virtual-Routers run as PV on XenServer and the eth0 
> is configured using {{/etc/init.d/cloud-early-config}} using grub params from 
> {{/proc/cmdline}}. When VM run as HVM, it is not possible to push initial 
> boot instruction via pygrub.
> Quick tests has been done using xenstore and it look like it would be 
> possible to send same initial boot instruction has pygrub but using xenstore 
> for HVM instances.



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