Enable Xen Privileged Domain Support

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Dom0 - Xen

    https://wiki.xen.org/wiki/Dom0
    Dom0 is a privileged domain that starts first and manages the DomU unprivileged domains. The Xen hypervisor is not usable without Dom0. This is essentially the "host" operating system (or a "service console", if you prefer).

Device Model Stub Domains - Xen

    https://wiki.xenproject.org/wiki/Device_Model_Stub_Domains
    In older toolstacks (xm/xend as well as xl in Xen 4.1) you can enable a device model stub domain for a guest by specifying the magic string stubdom-dm as your device model: device_model = "stubdom-dm" If you wish you may freely mix the use of stub domain device model and dom0 process device model on a per domain basis within a single system.

Compiling Xen From Source - Xen

    https://wiki.xenproject.org/wiki/Compiling_Xen_From_Source
    If compiling Linux from source for either dom0 or a guest you can now enable Xen support for both through one simple kernel configuration helper, this was added as of v4.2: make xenconfig This lets you build a kernel which can support xen dom0 or xen guests on i386, x86-64 and arm64.

Xen 4.11 Improves Server Virtualization with PVH

    https://www.serverwatch.com/server-news/xen-4.11-improves-server-virtualization-with-pvh.html
    Jul 10, 2018 · In Xen 4.11, preview support for PVH Dom0 has been added. Dom0 is the initial first privileged domain that starts a Xen virtual machine. "Running a PVH Dom0 removes approximately 1 million lines of QEMU code from Xen Project's computing base, shrinking the attack surface of Xen Project-based systems," the project stated in a press release.

Xen Security Modules : XSM-FLASK - Xen

    https://wiki.xen.org/wiki/Xen_Security_Modules_:_XSM-FLASK
    - Prevent two domains from communicating via event channels or grants - Grant a set of privileged capabilities to otherwise unprivileged domains - Control which domains can use device passthrough (and which devices) - Restrict or audit operations performed by privileged domains - Prevent a privileged domain from arbitrarily mapping pages from other domains - Isolate hypervisor support …

Xen Community Update

    http://www-archive.xenproject.org/files/xensummit_santaclara11/aug2/2_IanP_Xen_Community_Update.pdf
    Xen Cloud Platform (XCP) ® •XCP Expands Xen.org’s scope beyond the core hypervisor, to create a full virtual infrastructure layer for Cloud deployments –Simplify and streamline use of Xen by Cloud providers and vendors –Promote greater standardisation of components between vendors

Xen ARM with Virtualization Extensions whitepaper - Xen

    https://wiki.xenproject.org/wiki/Xen_ARM_with_Virtualization_Extensions_whitepaper
    Xen is type-1 hypervisor: it runs directly on the hardware, everything else in the system is running as a virtual machine on top of Xen, including Dom0, the first virtual machine. Dom0 is created by Xen, is privileged and drives the devices on the platform.

Xen.org and Linux Kernel Update - Xen Project

    https://xenproject.org/2009/06/05/xenorg-and-linux-kernel-update/
    Jun 05, 2009 · There has been a great deal of developer discussion lately around the proposed patches to extend the Linux kernel’s existing Xen support to include control domain capabilities (loosely known as “the dom0 patches”).

Domain - Xen

    https://wiki.xen.org/wiki/Domain
    Domain0 is the first domain started by the Xen hypervisor at boot, and will be running a Linux OS. This domain is privileged: it may access the hardware and can run the XenControlTools that manage other domains. These other domains are referred to as DomUs, the …



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