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=- <xlord.sl at gmail.com> 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:* centos-virt-bounces at centos.org [mailto: > centos-virt-bounces at centos.org] *On Behalf Of *Laurentiu Soica > *Sent:* Thursday, August 4, 2016 3:07 AM > *To:* centos-virt at centos.org > *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 >-------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos-virt/attachments/20160804/19503d28/attachment-0002.html>
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:laurentiu at soica.ro]
Sent: Thursday, August 4, 2016 2:41 PM
To: -=X.L.O.R.D=- <xlord.sl at gmail.com>; Discussion about the
virtualization on CentOS <centos-virt at centos.org>
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=- <xlord.sl at gmail.com
<mailto:xlord.sl at gmail.com> > 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: centos-virt-bounces at centos.org <mailto:centos-virt-bounces at
centos.org> [mailto:centos-virt-bounces at centos.org
<mailto:centos-virt-bounces at centos.org> ] On Behalf Of Laurentiu Soica
Sent: Thursday, August 4, 2016 3:07 AM
To: centos-virt at centos.org <mailto:centos-virt at centos.org>
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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Dear Laurentiu,
Could you please check if your CPU supported from /proc/cpuinfo and lscpu ?
EPT supported
Xlord
From: -=X.L.O.R.D=- [mailto:xlord.sl at gmail.com]
Sent: Thursday, August 4, 2016 5:12 PM
To: 'Laurentiu Soica' <laurentiu at soica.ro>; 'Discussion
about the virtualization on CentOS' <centos-virt at centos.org>
Subject: RE: [CentOS-virt] Centos 7 newer kernel needed
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:laurentiu at soica.ro]
Sent: Thursday, August 4, 2016 2:41 PM
To: -=X.L.O.R.D=- <xlord.sl at gmail.com <mailto:xlord.sl at gmail.com>
>; Discussion about the virtualization on CentOS <centos-virt at
centos.org <mailto:centos-virt at centos.org> >
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=- <xlord.sl at gmail.com
<mailto:xlord.sl at gmail.com> > 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: centos-virt-bounces at centos.org <mailto:centos-virt-bounces at
centos.org> [mailto:centos-virt-bounces at centos.org
<mailto:centos-virt-bounces at centos.org> ] On Behalf Of Laurentiu Soica
Sent: Thursday, August 4, 2016 3:07 AM
To: centos-virt at centos.org <mailto:centos-virt at centos.org>
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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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/log/?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? Thank you, Laurentii On Thu, Aug 4, 2016, 12:14 -=X.L.O.R.D=- <xlord.sl at gmail.com> wrote:> Dear Laurentiu, > > Could you please check if your CPU supported from /proc/cpuinfo and lscpu ? > > > > EPT supported > > Xlord > > > > *From:* -=X.L.O.R.D=- [mailto:xlord.sl at gmail.com] > *Sent:* Thursday, August 4, 2016 5:12 PM > *To:* 'Laurentiu Soica' <laurentiu at soica.ro>; 'Discussion about the > virtualization on CentOS' <centos-virt at centos.org> > *Subject:* RE: [CentOS-virt] Centos 7 newer kernel needed > > > > 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:laurentiu at soica.ro <laurentiu at soica.ro>] > > *Sent:* Thursday, August 4, 2016 2:41 PM > *To:* -=X.L.O.R.D=- <xlord.sl at gmail.com>; Discussion about the > virtualization on CentOS <centos-virt at centos.org> > > *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=- <xlord.sl at gmail.com> 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:* centos-virt-bounces at centos.org [mailto: > centos-virt-bounces at centos.org] *On Behalf Of *Laurentiu Soica > *Sent:* Thursday, August 4, 2016 3:07 AM > *To:* centos-virt at centos.org > *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 > >-------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos-virt/attachments/20160804/4d07f4eb/attachment-0002.html> -------------- next part -------------- A non-text attachment was scrubbed... Name: image001.png Type: image/png Size: 4726 bytes Desc: not available URL: <http://lists.centos.org/pipermail/centos-virt/attachments/20160804/4d07f4eb/attachment-0002.png>