saudifert.blogg.se - Qemu system i386 hardware

#Qemu system i386 hardware upgrade#
#Qemu system i386 hardware code#

QEMU in a Xen system only provides device model (DM) emulation and not any CPU instruction emulation, so the nominal arch doesn't actually matter and Xen builds i386 everywhere as a basically arbitrary choice. Why is qemu-system-i386 used even on x86_64 and even non-x86? These trees are still around for reference, but are not in use any more.

qemu-xen-traditional: xenbits in qemu-xen-VERSION.git e.g.

These can be found on xenbits in qemu-upstream-VERSION.git e.g. In addition the Xen project also maintains its own stable branch of qemu, based on the upstream stable branches with a small number of additional fixes for Xen.

#Qemu system i386 hardware code#

qemu-xen: The 'qemu-xen' code is maintained upstream in the git trees.

In the past, we maintained the following trees: stable-4.10.īy default the Xen build system will clone and build both versions of QEMU from the branches on xenbits. There are branches for each release of Xen named 'stable-VERSION' e.g. The qemu-xen-traditional fork is maintained on xenbits With a branch for each release of Xen named 'stable-VERSION', These can be found on xenbits in qemu-xen.git The qemu-xen code is maintained upstream in the git trees.

Some guest operating systems, especially non-free systems that rely on licensing bound to a specific hardware, do not behave nicely when hardware is changed under their feet.

#Qemu system i386 hardware upgrade#

After a Dom0 upgrade to a newer Xen version the new 'qemu-xen' device model is recognized as a significant hardware change. The 'qemu-xen-traditional' fork remains available to support guest OSs that were installed using it. The xl toolstack describes this version as 'qemu-xen', and this became the default from Xen 4.3 onward. However since Qemu 1.0 support for Xen has been part of the mainline Qemu and can be used with Xen from 4.2 onwards. Historically Xen contained a fork of qemu with Xen support added, known as 'qemu-xen-traditional' in the xl toolstack.

8.1 Missing feature from the good old qemu-dm.

4 Using a distribution supplied version of Qemu.

3 Why is qemu-system-i386 used even on x86_64 and even non-x86?.