RFR: 8219241: Provide basic virtualization related info in the hs_error file on linux/windows x86_64

[David Holmes]

Hi Matthias,

Combining this with 8219746 I have to insist that we use a nice clean 
OS-CPU abstraction for dealing with this and get rid of the platform 
ifdefs in os::Linux::print_virtualization_info. What you've added in 
VM_Version would seem to be the right kind of platform specific 
functionality and it seems to me that you could get rid of 
os::Linux::print_virtualization_info and just use 
VM_Version::print_detected_virtualization in its place.

Thanks,
David

On 1/03/2019 2:04 am, Baesken, Matthias wrote:
> Hello,   I provided  a second version .
> The  x86_64  assembler code was simplified (thanks to Martin for the hint)  ; additionally some comments were  adjusted .
> 
> 
> http://cr.openjdk.java.net/~mbaesken/webrevs/8219241.2/
> 
> 
> Best regards , Matthias
> 
> 
> 
> Hello , please review the following change.
> It provides basic virtualization related information in the hs_error file on linux/windows x86_64.
> We use cpuid  to get the information (detection of VMWare, Xen, KVM and HyperV is included).
> 
> Some info about how to detect the virtualization info can be found here :
> https://kb.vmware.com/s/article/1009458
> 
> 
> 
> (it is VMware related but can be applied for other virtualization technologies as well)
> 
> 
> An overview of the ID strings can be found here as well :
> 
> https://en.wikipedia.org/wiki/CPUID
> The following are known ID strings from virtual machines: ...
> 
> 
> 
> bug/webrev :
> 
> https://bugs.openjdk.java.net/browse/JDK-8219241
> 
> http://cr.openjdk.java.net/~mbaesken/webrevs/8219241.1/
> 
> 
> 
> Thanks, Matthias
>