- WHAT IS QEMU INSTALL
- WHAT IS QEMU WINDOWS 10
- WHAT IS QEMU SOFTWARE
- WHAT IS QEMU CODE
- WHAT IS QEMU SERIES
What are my alternatives to kqemu in Ubuntu 9.10, Ubuntu 10.04 LTS, and beyond?
WHAT IS QEMU CODE
kqemu code within QEMU actually conflicts or breaks KVM code paths (specifically some required for 64-bit KVM support).Upstream is open to reconsidering kqemu support, if an active maintainer steps up, fixes the open issues, and commits to providing ongoing support. You can read the hundreds of messages, as well as the handful of bug reports, if you like, but there are two primary reasons: (The Ubuntu Server Team also conducted a poll and held a discussion on the topic at UDS-Lucid in Dallas, Texas in November 2009.) An open poll was conducted by QEMU upstream to gauge the usefulness of kqemu.
This was thoroughly discussed on the upstream qemu-devel mailing list by the developers of QEMU, as well as many users. Why did upstream QEMU drop support for kqemu?
WHAT IS QEMU SERIES
And the upstream qemu-0.12 release series (which is in Ubuntu 10.04 LTS) actually removed all remnants of the kqemu hooks from the source. The upstream qemu-0.11 release series (which was in Ubuntu 9.10) disabled kqemu in the build. Quite simply, the upstream QEMU community deprecated kqemu in favor of kvm. Why was support for kqemu dropped from Ubuntu? Just run kvm-ok from a command line and it should tell you. How do I know if my hardware supports VT? Otherwise, kqemu arguably may be useful on some legacy hardware without VT. If your CPU supports VT or you have access to hardware that supports VT, you have no need for kqemu, as kvm is a far more complete, better performing, fully supported, and more modern alternative. Unlike kvm, kqemu has never been accepted in the upstream Linux kernel.Īlso different from kvm is the fact that kqemu works on hardware that does not support CPU Virtualization Technology (VT extensions), see Intel VT and AMD-V. This means that systems lacking the hardware virtualization support that is required by kvm will not perform well in Ubuntu 10.04 LTS. KQEMU is not supported in Ubuntu 10.04 LTS. Support for kqemu has been removed from the upstream source in qemu versions 0.11 and later. Kqemu was available in Ubuntu 8.04 to 9.04 from universe as a DKMS package. In this respect, it's similar to kvm.īeyond the kernel module, kqemu requires support from the QEMU userspace emulator to take advantage of the kqemu kernel hooks. If you use OVMF firmware for the guest, then the firmware will measure components with TPM.Kqemu is a kernel module that "accelerates" QEMU virtualization by allowing guests to run some operations directly on the host's CPU. The above UUID follows the number in libvirt template. The corresponding permall file will be created automatically in /var/lib/libvirt/swtpm/ The tpm-crb TPM model can also be used, but it's only for TPM 2.0. You don't need to launch swtpm daemon by yourself. Libvirt will start swtpm as the TPM emulator for the guest VM. If you use libvirt, add the following TPM emulator device to template: Then, a TPM device will be available in the guest, and "tpm_version" would show you: tpmdev emulator,id=tpm0,chardev=chrtpm \ $ swtpm socket -tpmstate dir=$/mytpm0/swtpm-sock \ First, create a directory to store the TPM states right inside the VM directory:Īnd then, start the emulator to create a socket file, swtpm-sock, for QEMU. Here we choose "socket" since it's the only type that doesn't need to create a node in /dev. Swtpm provides 3 types of interface: socket, chardev, and cuse.
WHAT IS QEMU INSTALL
Just download libtpms0 and swtpm and install them. For other products and versions the packages are available in the "security" repo:
WHAT IS QEMU SOFTWARE
The software TPM emulator swtpm is curently included in openSUSE Tumbleweed. With TPM emulator, the guest can switch between TPM 1.2 and TPM 2.0 easily, and this makes the developer's life much easier. Fortunately, since 2.11, QEMU starts to support the TPM emulator. It's impossible to develop the TPM 2.0 features with a TPM 1.2 chip.
Besides, the developers are also limited by the hardware capabilities. Before 2.11, QEMU can only do TPM passthrough to access the TPM hardware on the host, and this limits the number of guests to access TPM. For the developers who want to use TPM to develop the security features, a software TPM emulator is usually a good choice.
WHAT IS QEMU WINDOWS 10
encryption, random number generation, measurement, etc., and now widely deployed among the new machines due to the requirement of Windows 10 certification. Trusted Platform Module (TPM) is a component to provide several security functions, e.g.