[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH v3 08/17] SUPPORT.md: Add x86-specific virtual hardware
x86-specific virtual hardware provided by the hypervisor, toolstack, or QEMU. Signed-off-by: George Dunlap <george.dunlap@xxxxxxxxxx> --- Changes since v2: - Updated Nested PV / HVM sections - Removed AVX section - EFI -> OVMF Changes since v1: - Added emulated QEMU support, to replace docs/misc/qemu-xen-security. Need to figure out what to do with the "backing storage image format" section of that document. CC: Ian Jackson <ian.jackson@xxxxxxxxxx> CC: Wei Liu <wei.liu2@xxxxxxxxxx> CC: Andrew Cooper <andrew.cooper3@xxxxxxxxxx> CC: Jan Beulich <jbeulich@xxxxxxxx> CC: Stefano Stabellini <sstabellini@xxxxxxxxxx> CC: Konrad Wilk <konrad.wilk@xxxxxxxxxx> CC: Tim Deegan <tim@xxxxxxx> CC: Roger Pau Monne <roger.pau@xxxxxxxxxx> CC: Anthony Perard <anthony.perard@xxxxxxxxxx> CC: Paul Durrant <paul.durrant@xxxxxxxxxx> --- SUPPORT.md | 105 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 105 insertions(+) diff --git a/SUPPORT.md b/SUPPORT.md index 96c381fb55..98ed18098a 100644 --- a/SUPPORT.md +++ b/SUPPORT.md @@ -373,6 +373,111 @@ but has no xl support. Status: Supported +## Virtual Hardware, Hypervisor + +### x86/Nested PV + + Status, x86 Xen HVM: Tech Preview + +This means running a Xen hypervisor inside an HVM domain on a Xen system, +with support for PV L2 guests only +(i.e., hardware virtualization extensions not provided +to the guest). + +This works, but has performance limitations +because the L1 dom0 can only access emulated L1 devices. + +Xen may also run inside other hypervisors (KVM, Hyper-V, VMWare), +but nobody has reported on performance. + +### x86/Nested HVM + + Status, x86 HVM: Experimental + +This means providing hardware virtulatization support to guest VMs +allowing, for instance, a nested Xen to support both PV and HVM guests. +It also implies support for other hypervisors, +such as KVM, Hyper-V, Bromium, and so on as guests. + +### vPMU + + Status, x86: Supported, Not security supported + +Virtual Performance Management Unit for HVM guests + +Disabled by default (enable with hypervisor command line option). +This feature is not security supported: see http://xenbits.xen.org/xsa/advisory-163.html + +## Virtual Hardware, QEMU + +These are devices available in HVM mode using a qemu devicemodel (the default). +Note that other devices are available but not security supported. + +### x86/Emulated platform devices (QEMU): + + Status, piix3: Supported + +### x86/Emulated network (QEMU): + + Status, e1000: Supported + Status, rtl8193: Supported + Status, virtio-net: Supported + +### x86/Emulated storage (QEMU): + + Status, piix3 ide: Supported + Status, ahci: Supported + +### x86/Emulated graphics (QEMU): + + Status, cirrus-vga: Supported + Status, stgvga: Supported + +### x86/Emulated audio (QEMU): + + Status, sb16: Supported + Status, es1370: Supported + Status, ac97: Supported + +### x86/Emulated input (QEMU): + + Status, usbmouse: Supported + Status, usbtablet: Supported + Status, ps/2 keyboard: Supported + Status, ps/2 mouse: Supported + +### x86/Emulated serial card (QEMU): + + Status, UART 16550A: Supported + +### x86/Host USB passthrough (QEMU): + + Status: Supported, not security supported + +## Virtual Firmware + +### x86/HVM iPXE + + Status: Supported, with caveats + +Booting a guest via PXE. +PXE inherently places full trust of the guest in the network, +and so should only be used +when the guest network is under the same administrative control +as the guest itself. + +### x86/HVM BIOS + + Status: Supported + +Booting a guest via guest BIOS firmware + +### x86/HVM OVMF + + Status: Supported + +OVMF firmware implements the UEFI boot protocol. + # Format and definitions This file contains prose, and machine-readable fragments. -- 2.15.0 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx https://lists.xen.org/xen-devel
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