Feature changed by: yi li (liyicybertan123) Feature #314468, revision 7 Title: IVSHMEM support for KVM Requested by: yi li (liyicybertan123) Partner organization: openSUSE.org Description: inter-VM directly commutincation, using IVSHMEM and reduce the cost between the VMs and VMM Discussion: #1: Michal Svec (msvec) (2013-08-06 15:48:43) We need more details what exactly is requested. + #2: yi li (liyicybertan123) (2013-08-07 06:32:38) (reply to #1) + ivshmem is an implementation of an inter-VM communication channel The + Inter-VM shared memory device is designed to share a region of memory + to userspace in multiple virtual guests. The memory region does not + belong to any guest, but is a POSIX memory object on the host. i have + check the kvm code, it is supported now. do we support it using the + libvirt ? -- openSUSE Feature: https://features.opensuse.org/314468

Feature changed by: Antoine Ginies (aginies) Feature #314468, revision 11 - Title: IVSHMEM support for KVM + Title: KVM: IVSHMEM support Requested by: yi li (liyicybertan123) Partner organization: openSUSE.org Description: inter-VM directly commutincation, using IVSHMEM and reduce the cost between the VMs and VMM Discussion: #1: Michal Svec (msvec) (2013-08-06 15:48:43) We need more details what exactly is requested. #2: yi li (liyicybertan123) (2013-08-07 06:32:38) (reply to #1) ivshmem is an implementation of an inter-VM communication channel The Inter-VM shared memory device is designed to share a region of memory to userspace in multiple virtual guests. The memory region does not belong to any guest, but is a POSIX memory object on the host. i have check the kvm code, it is supported now. do we support it using the libvirt ? #3: chen zhen (hydracz) (2013-08-07 07:01:29) Customer will use IVSHMEM shared memory to communicate among Guests OS or between Host and Guests, this will be a more efficient way to communicate (LOW-LATENCY, HIGH-BANDWIDTH). our partner Huawei is planning to enable this feature in VMs and allow application to use it please also refers to below URL for more details: http://www.linux-kvm.org/wiki/images/c/cc/2011-forum-nahanni.v5.for.public.p... -- openSUSE Feature: https://features.opensuse.org/314468

Feature changed by: Jason Douglas (BigVBGuy) Feature #314468, revision 13 Title: KVM: IVSHMEM support Requested by: yi li (liyicybertan123) Partner organization: openSUSE.org Description: inter-VM directly commutincation, using IVSHMEM and reduce the cost between the VMs and VMM Discussion: #1: Michal Svec (msvec) (2013-08-06 15:48:43) We need more details what exactly is requested. #2: yi li (liyicybertan123) (2013-08-07 06:32:38) (reply to #1) ivshmem is an implementation of an inter-VM communication channel The Inter-VM shared memory device is designed to share a region of memory to userspace in multiple virtual guests. The memory region does not belong to any guest, but is a POSIX memory object on the host. i have check the kvm code, it is supported now. do we support it using the libvirt ? #3: chen zhen (hydracz) (2013-08-07 07:01:29) Customer will use IVSHMEM shared memory to communicate among Guests OS or between Host and Guests, this will be a more efficient way to communicate (LOW-LATENCY, HIGH-BANDWIDTH). our partner Huawei is planning to enable this feature in VMs and allow application to use it please also refers to below URL for more details: http://www.linux-kvm.org/wiki/images/c/cc/2011-forum-nahanni.v5.for.public.p... #4: Bruce Rogers (bfrogers) (2013-09-10 23:58:39) QEMU has had the ivshmem device for some time, but we have it listed as not supported in SLE11 SP3. I haven't looked into the details of using this device, so can't speak to whether it even works. My only concern is whether there might be some security issues related to its use. + #5: Jason Douglas (bigvbguy) (2013-09-11 14:39:58) (reply to #4) + Accepted pending approval from the security team as well as further + investigation that the code is supportable. -- openSUSE Feature: https://features.opensuse.org/314468

Feature changed by: Olaf Kirch (okir) Feature #314468, revision 18 Title: [RC] KVM: IVSHMEM support Requested by: yi li (liyicybertan123) Partner organization: openSUSE.org Description: inter-VM directly commutincation, using IVSHMEM and reduce the cost between the VMs and VMM Discussion: #1: Michal Svec (msvec) (2013-08-06 15:48:43) We need more details what exactly is requested. #2: yi li (liyicybertan123) (2013-08-07 06:32:38) (reply to #1) ivshmem is an implementation of an inter-VM communication channel The Inter-VM shared memory device is designed to share a region of memory to userspace in multiple virtual guests. The memory region does not belong to any guest, but is a POSIX memory object on the host. i have check the kvm code, it is supported now. do we support it using the libvirt ? #3: chen zhen (hydracz) (2013-08-07 07:01:29) Customer will use IVSHMEM shared memory to communicate among Guests OS or between Host and Guests, this will be a more efficient way to communicate (LOW-LATENCY, HIGH-BANDWIDTH). our partner Huawei is planning to enable this feature in VMs and allow application to use it please also refers to below URL for more details: http://www.linux-kvm.org/wiki/images/c/cc/2011-forum-nahanni.v5.for.public.p... #4: Bruce Rogers (bfrogers) (2013-09-10 23:58:39) QEMU has had the ivshmem device for some time, but we have it listed as not supported in SLE11 SP3. I haven't looked into the details of using this device, so can't speak to whether it even works. My only concern is whether there might be some security issues related to its use. #5: Jason Douglas (bigvbguy) (2013-09-11 14:39:58) (reply to #4) Accepted pending approval from the security team as well as further investigation that the code is supportable. + #7: Olaf Kirch (okir) (2014-02-17 14:03:42) + Beyond the security review, does this need any coding? -- openSUSE Feature: https://features.opensuse.org/314468