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QEMU 6.0 Released With AMD SEV-ES Encrypted Guest Support, Experimental Multi-Process

Submitted by Roy Schestowitz on Thursday 29th of April 2021 10:23:22 PM Filed under
Software

QEMU 6.0 is out today as the newest feature release for this processor/machine emulator and virtualizer that serves as an important part of the open-source Linux virtualization stack.

QEMU 6.0 brings with it many new features including the likes of experimental multi-process device emulation support, AMD SEV-ES encrypted guest support, new processor.machine support, and other virtualization improvements.

- QEMU can now be built with link-time optimizations (LTO) and also supports LLVM Control-Flow Integrity (CFI) too.

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QEMU 6.0.0 released

Submitted by Roy Schestowitz on Friday 30th of April 2021 05:10:10 PM.
  • QEMU 6.0.0 released

    Version 6.0.0 of the QEMU hardware emulator is out. "This release contains 3300+ commits from 268 authors." This release includes a lot of new emulations; see the announcement for a short list or the changelog for details.

QEMU 6.0.0 Released With Focus On ARM And RISC-V

Submitted by Roy Schestowitz on Friday 30th of April 2021 09:44:59 PM.

  • QEMU 6.0.0 Released With Focus On ARM And RISC-V

    The latest QEMU version brings virtiofs performance improvements with new USE_KILLPRIV_V2 guest feature.

    Qemu is a machine emulator that can run operating systems and programs for one machine on a different machine. Mostly it is not used as emulator but as virtualizer in collaboration with KVM kernel components. In that case it utilizes the virtualization technology of the hardware to virtualize guests.

    QEMU can run independently, but due to the emulation being performed entirely in software it is extremely slow. To overcome this, QEMU allows you to use KVM as an accelerator so that the physical CPU virtualization extensions can be used.

QEMU 6.0 Is Released With A Long List Of New Features

Submitted by Roy Schestowitz on Monday 3rd of May 2021 03:27:21 AM.
  • QEMU 6.0 Is Released With A Long List Of New Features

    QEMU 6.0 is a huge release with a very long list of improvements for everyone using this powerful multi-platform full system emulator to run operating systems for Arm, PowerPC, RISC-V, s390, SPARC, x86 and other systems QEMU supports on Linux, Windows or macOS.

    [...]

    The above list of new features in QEMU 6.0 barely scratches the surface, the full QEMU 6.0 changelog is a very long read.

    The QEMU download page for Linux does not list any AppImage, Snap, .deb or .rpm packages or binaries of any kind, it simply lists instructions for installing it using the major Linux distributions repositories. All of them have some recently new QEMU version like 5.2, none have the latest 6.0 release. That leaves compiling from source as the only option if you really want QEMU 6.0 now. The source is a 102 MiB tarball that extracts to 724 MiB. Building it is, in theory, as easy as ./configure && make, but there are a lot of optional dependencies to work out. You will likely need to install a number of development packages and a number of ./configure flags like --enable-kvm (kind of important if you want to run x86-64 software on x86-64 without a huge performance penalty). You may be better off waiting until your distribution makes a QEMU 6.0 package unless you really want one of the new features right now. The actual compile will only take about 15 minutes on a Ryzen 1600X with -j 12, even thought the source tree is huge, so it is doable. Make sure to get all the dependencies in place and re-run ./configure so you don't end up with a crippled QEMU if you decide to go that route.

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