search for: epted

Attached are the patches to support super page with EPT. We only support 2M size. And shadow may still work fine with 4K pages. The patches can be split into 3 parts. Apply order is as attached. tool.diff To allocate 2M physical contiguous memory in guest except the first 2M and the last 2M. The first 2M covers special memory, and Xen use the last few pages in guest memory to do special

Hi, I am really confused about NPT walks for guest page table , and eager to know the details about it. It is treated as data writes even if the access itself is a code read in AMD NPT.I just want to know : is it the same in EPT? Could anyone help me? I would like to know that very much Thank you in advance Bo Ma _______________________________________________ Xen-devel mailing list

From: Zhang Xiantao <xiantao.zhang@intel.com> With virtual EPT support, L1 hyerpvisor can use EPT hardware for L2 guest''s memory virtualization. In this way, L2 guest''s performance can be improved sharply. According to our testing, some benchmarks can show > 5x performance gain. Signed-off-by: Zhang Xiantao <xiantao.zhang@intel.com> Zhang Xiantao (11):

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,

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.

The patch attached is to set effective memory type for EPT according to the VT-d snoop control capability, and also includes some cleansup for EPT & VT-d both enabled. Signed-off-by: Zhai, Edwin Edwin.Zhai@intel.com<mailto:Edwin.Zhai@intel.com> Signed-off-by: Xin, Xiaohui xiaohui.xin@intel.com<mailto:xiaohui.xin@intel.com> _______________________________________________

Hello I''am using xen 4.1.1. I''ve created 4 domU successfully, but EPT Table is not enable, and I can''t enable it. I''ve try different option in grub (iommu=eptable, ....). According to "xm dmesg", my PC is compatible with EPT (XEN) VMX: Supported advanced features: (XEN) - APIC MMIO access virtualisation (XEN) - APIC TPR shadow

Linux supports running the RPMsg protocol over the VirtIO transport protocol, but currently there is only support for VirtIO clients and no support for VirtIO servers. This patch adds a vhost-based RPMsg server implementation, which makes it possible to use RPMsg over VirtIO between guest VMs and the host. Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski at linux.intel.com> ---

Linux supports running the RPMsg protocol over the VirtIO transport protocol, but currently there is only support for VirtIO clients and no support for a VirtIO server. This patch adds a vhost-based RPMsg server implementation. Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski at linux.intel.com> --- drivers/vhost/Kconfig | 7 + drivers/vhost/Makefile | 3 +

Linux supports running the RPMsg protocol over the VirtIO transport protocol, but currently there is only support for VirtIO clients and no support for a VirtIO server. This patch adds a vhost-based RPMsg server implementation. Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski at linux.intel.com> --- drivers/vhost/Kconfig | 7 + drivers/vhost/Makefile | 3 +

This fixes a bug in changeset 22526:7a5ee3800417, where the wrong value is read when deciding whether to flush the VTd tables. The effect is minor: in situations where the p2m entry is changed but the mfn is the same, the VTd tables will be unnecessarily flushed. old_entry is left untouched in the second case, since having a present old_entry will cause the an unnecessary check to be taken at

This patch series restores the use of superpages when restoring or migrating a VM, while retaining efficient batching of 4k pages when superpages are not appropriate or available. Signed-off-by: George Dunlap <george.dunlap@eu.citrix.com> _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel

Hi Mathieu, On Wed, Sep 09, 2020 at 04:39:46PM -0600, Mathieu Poirier wrote: > Good afternoon, > > On Wed, Aug 26, 2020 at 07:46:36PM +0200, Guennadi Liakhovetski wrote: > > Linux supports running the RPMsg protocol over the VirtIO transport > > protocol, but currently there is only support for VirtIO clients and > > no support for a VirtIO server. This patch adds a

Hi Mathieu, On Thu, Sep 17, 2020 at 04:01:38PM -0600, Mathieu Poirier wrote: > On Thu, Sep 10, 2020 at 01:13:51PM +0200, Guennadi Liakhovetski wrote: > > Linux supports running the RPMsg protocol over the VirtIO transport > > protocol, but currently there is only support for VirtIO clients and > > no support for VirtIO servers. This patch adds a vhost-based RPMsg > >

Hi, Next update: v7: - remove documentation update to be send separately - address comments from Mathieu Poirier (thanks) v6: - rename include/linux/virtio_rpmsg.h -> include/linux/rpmsg/virtio.h v5: - don't hard-code message layout v4: - add endianness conversions to comply with the VirtIO standard v3: - address several checkpatch warnings - address comments from Mathieu Poirier v2:

Hi, Next update: v7: - remove documentation update to be send separately - address comments from Mathieu Poirier (thanks) v6: - rename include/linux/virtio_rpmsg.h -> include/linux/rpmsg/virtio.h v5: - don't hard-code message layout v4: - add endianness conversions to comply with the VirtIO standard v3: - address several checkpatch warnings - address comments from Mathieu Poirier v2:

This patch series is based on the VM introspection patches (https://lore.kernel.org/kvm/20200721210922.7646-1-alazar at bitdefender.com/), extending the introspection API with EPT Views and Virtualization Exceptions (#VE) support. The purpose of this series is to get an initial feedback and to see if we are on the right track, especially because the changes made to add the EPT views are not small

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

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

I am using libvirt 1.2.20. I noticed that when running some VMs (CentOS ) with 2G ram, 2CPUs each for some reason they go from 'state=running' to 'state=paused'; and they can't be restarted. They are un-usable. When this happens I get the following in dmesg output: [ 46.595265] EPT: Misconfiguration. [ 46.595271] EPT: GPA: 0xfee000b0 [ 46.595275]