Dear Laurentiu, Agree with Johnny for kernel upgrade if upgrade helps, alternative if 3.10 or above already supported it, you can check from kernel parameter or options if they are disabled on purpose. You can do that via the "make menuconfig" via "https://wiki.centos.org/HowTos/I_need_the_Kernel_Source"; or "https://wiki.centos.org/HowTos/BuildingKernelModules";. Hope that helps! Xlord -----Original Message----- From: centos-virt-bounces@xxxxxxxxxx [mailto:centos-virt-bounces@xxxxxxxxxx] On Behalf Of Johnny Hughes Sent: Thursday, August 4, 2016 9:10 PM To: centos-virt@xxxxxxxxxx Subject: Re: Centos 7 newer kernel needed On 08/04/2016 07:30 AM, Laurentiu Soica wrote: > Hi Xlord, > > Yes, the CPU has support for EPT. > > I wrongly thought that the nested EPT was first introduced in 3.12. > Following your instructions I see that I have it enabled on my system > as well. > > However, checking the kernel commits from 3.12 on search string > 'nested ept' I found about 10 code changes/fixes for nested EPT. > > https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/l > og/?id=refs%2Ftags%2Fv3.12.62&qt=grep&q=Nested+ept > > What options do I have to get this commits on a Centos 7 kernel? The Standard CentOS kernel is built from the source code and configuration files of the released RHEL kernel. The only way to get things into the main CentOS kernel is for it to be in the RHEL source code. Red Hat does backport changes into the RHEL kernel, so if they support nested those changes or ones like it may be there. See Backporting: https://access.redhat.com/security/updates/backporting We do have a CentOSPlus kernel, maintained by a volunteer (hi toracat). She will take potential patches here if you have something that works: https://bugs.centos.org/view.php?id=6828 Also, if you want to try a newer kernel, we do have 2 available. I manage both of these kernels, they are both based on an LTS version of the kernel from kernel.org .. but neither gets nearly the attention (or smart people looking at them) as the RHEL based kernel. If you want to try either of them, they are in: 3.18.x LTS: http://mirror.centos.org/centos/7/virt/x86_64/xen-46/ 4.4.x LTS: http://mirror.centos.org/altarch/7.2.1511/experimental/x86_64/Packages/ Those kernels both work, I am running both on production machines .. but I am not a kernel hacker, so I just build what the upstream LTS kernel maintainer releases. They may or may not do what you want. The RHEL kernel team does a lot of work to make sure the RHEL kernel Thanks, Johnny Hughes _______________________________________________ CentOS-virt mailing list CentOS-virt@xxxxxxxxxx https://lists.centos.org/mailman/listinfo/centos-virt
