Dear Laurentiu, Assume your hardware does support Intel VT-x with EPT supported, I have also look into the kernel part for fun!
Just quick look at CentOS 7 and installed a CentOS_7x_x64_build1511 @installation at minimum, below is my sharing and hope to help! 1) CentOS Linux Kernel version: 3.10.0-327.e17.x86_64 SMP 2) Kernel parameters which should be your requirement; a. Default “kvm-intel.ept=1” (refer to Kernel Archive “https://www.kernel.org/”) b. Xlord From: Laurentiu Soica [mailto:[email protected]] Sent: Thursday, August 4, 2016 2:41 PM To: -=X.L.O.R.D=- <[email protected]>; Discussion about the virtualization on CentOS <[email protected]> Subject: Re: [CentOS-virt] Centos 7 newer kernel needed Hello Xlord, The CPU does have VT support and I already have the nested KVM enabled. Checking the Linux Kernel release notes I saw that the nested kvm feature was implemented in 3.10 but he EPT support is in 3.12. So Centos 7's kernel which is 3.10 does have the EPT support? Is there a way to check that the EPT support is available in the kernel? Thank you, Laurentiu On Thu, Aug 4, 2016, 06:04 -=X.L.O.R.D=- <[email protected] <mailto:[email protected]> > wrote: Dear Laurentiu, Please check below info since assume your CentOS7 box CPU processor already VT supported in advance. 1) Checkpoint #1: Hardware and Kernel modules a. cat /proc/cpuinfo | grep vmx b. cat /sys/module/kvm_intel/parameters/nested (if “N” then go to checkpoint #2) 2) Checkpoint #2: Assume your CentOS box support a. echo 'options kvm-intel nested=y' >> /etc/modprobe.d/dist.conf b. modprobe kvm-intel 3) Checkpoint #3: Verification a. Reboot yout CentOS box b. cat /sys/module/kvm_intel/parameters/nested (if “Y” then you can carry one process the KVM installation. PS: Source: https://lalatendu.org/2015/11/01/kvm-nested-virtualization-in-fedora-23/ which should be very similar with CentOS and CentOS 7 already capable with on with KVM Nested EPT with CPU pass-through options supported. Hope that helps & cheers!! Xlord From: [email protected] <mailto:[email protected]> [mailto:[email protected] <mailto:[email protected]> ] On Behalf Of Laurentiu Soica Sent: Thursday, August 4, 2016 3:07 AM To: [email protected] <mailto:[email protected]> Subject: [CentOS-virt] Centos 7 newer kernel needed Hello, I am looking for a Linux kernel for Centos 7 that implements a feature introduced in kernel version 3.12: "nested EPT support to KVM's nested VMX." If anyone has used this feature with Centos 7, please let me know. Laurentiu
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