[ANNOUNCE] kvm-30 release

[ANNOUNCE] kvm-30 release

[Avi Kivity]

This kvm release introduces guest smp.  I've tested 4-way Linux (64-bit 
and 32-bit) and 2-way Windows XP.  A kernel build on 2-way 64-bit Linux 
is 40% faster that on a uniprocessor guest.  Expect performance to 
improve as the in-kernel apic work is merged and as we tune kvm for smp.

Changes from kvm-29:
- minor fixes and cleanups  (Jeff Dike, Rusty Russell, me)
- kernel pio string write (Eddie Dong)
- guest smp kernel fixes
- rdmsr and wrmsr real mode emulation
- fix real mode shadow pages aliasing nx large page shadows
- enable guest smp in qemu
- fix external module installer
- revert ide enable changes that caused an I/O regression

Notes:
    If you use the modules from kvm-30, you can use any version of Linux
from 2.6.9 upwards.
    If you use the modules from Linux 2.6.20, you need to use kvm-12.
    If you use the modules from Linux 2.6.21, you need to use kvm-17.
    Modules from Linux 2.6.22 and up will work with any kvm version from
kvm-22.  Some features may only be available in newer releases.

http://kvm.qumranet.com

Re: [kvm-devel] [ANNOUNCE] kvm-30 release

[Luca]

On 7/19/07, Avi Kivity <avi@qumranet.com> wrote:
> Changes from kvm-29:
[...]
> - revert ide enable changes that caused an I/O regression

Not really. Dave is seeing the regression when IDE ports are enabled
and KVM BIOS does enable them.
Reverting the patch allows running another BIOS (e.g. QEMU BIOS) which
doesn't enable the port though.

Luca
As a side note: I'm currently busy with ICWE and tomorrow I'll be
leaving for Rome so I cannot do further tests.