http://trac.nchc.org.tw/grid/wiki/rock_xen_version
Xen各版本演進
¶
- Xen 3.3.0
- Power
management (P & C states) in the hypervisor
- HVM emulation
domains (qemu-on-minios) for better scalability, performance and security
- PVGrub: boot
PV kernels using real GRUB inside the PV domain
- Better PV
performance: domain lock removed from pagetable-update paths
- Shadow3:
optimisations to make this the best shadow pagetable algorithm yet,
making HVM performance better than ever
- Hardware
Assisted Paging enhancements: 2MB page support for better TLB locality
- CPUID feature
levelling: allows safe domain migration across systems with different
CPU models
- PVSCSI drivers
for SCSI access direct into PV guests
- HVM
framebuffer optimisations: scan for framebuffer updates more
efficiently
- Device
passthrough enhancements
- Full x86
real-mode emulation for HVM guests on Intel VT: supports a much wider
range of legacy guest OSes
- New qemu merge
with upstream development
- Many other
changes in both x86 and IA64 ports
- Xen 3.2.1
- Xen Security
Modules (XSM)
- ACPI S3
suspend-to-RAM support for the host system
- Preliminary
PCI pass-through support (using appropriate Intel or AMD
I/O-virtualization hardware)
- Preliminary
support for a wider range of bootloaders in fully virtualized
(HVM)guests, using full emulation of x86 real mode
- Faster
emulation of standard (non-super) VGA modes for HVM guests
- Configurable
timer modes for HVM guests, depending on how the guest OS manages
time-keeping
- Many other
changes and enhancements across all supported machine architectures
- Xen 3.2.0
- Xen Security
Modules (XSM)
- ACPI S3
suspend-to-RAM support for the host system
- Preliminary
PCI pass-through support (using appropriate Intel or AMD
I/O-virtualization hardware)
- Preliminary
support for a wider range of bootloaders in fully virtualized
(HVM)guests, using full emulation of x86 real mode
- Faster
emulation of standard (non-super) VGA modes for HVM guests
- Configurable
timer modes for HVM guests, depending on how the guest OS manages
time-keeping
- Many other
changes and enhancements across all supported machine architectures
- Xen 3.1.4
- XenAPI 1.0 support
- XML
configuration files for virtual machines;
- VM
life-cycle management operations; and
- Secure on-
or off-box XML-RPC with bindings for many languages
- Basic
save/restore/migrate support for HVM (e.g. Windows) VMs;
- Dynamic memory
control for HVM guests;
- 32-on-64 PV
guest support (run PAE PV VMs on a 64-bit Xen!);
and
- Blktap
copy-on-write disk support.
- Xen 3.1.3
- XenAPI 1.0 support
- XML
configuration files for virtual machines;
- VM
life-cycle management operations; and
- Secure on-
or off-box XML-RPC with bindings for many languages
- Basic
save/restore/migrate support for HVM (e.g. Windows) VMs;
- Dynamic memory
control for HVM guests;
- 32-on-64 PV
guest support (run PAE PV VMs on a 64-bit Xen!);
and
- Blktap
copy-on-write disk support.
- Xen 3.0.4
- support for
kexec/kdump of Xen and domain 0;
- graphical
framebuffer support for paravirtualised guests;
- preview
support for the new XenAPI management
interfaces;
- enhanced
support for IA64 (IPF) and Power systems.
- Xen 3.0.3
- easy-to-use
CPU scheduler including weights, caps and automatic load balancing
- much enhanced
suport for unmodified ('hvm') guests including windows and legacy linux
systems
- support for
sparse and copy-on-write disks
- high
performance networking using segmentation off-load
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