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[Qemu-devel] Re: [PATCH 00/21] qemu-kvm: Hook cleanups and extended use

From: Jan Kiszka
Subject: [Qemu-devel] Re: [PATCH 00/21] qemu-kvm: Hook cleanups and extended use of upstream code
Date: Tue, 02 Feb 2010 12:19:56 +0100
User-agent: Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv: Gecko/20080226 SUSE/ Thunderbird/ Mnenhy/

Alexander Graf wrote:
> On 02.02.2010, at 09:18, Jan Kiszka wrote:
>> Let's start with the overall stats:
>> 31 files changed, 274 insertions(+), 822 deletions(-)
>> So this series drops far more than 500 lines of redundant code, moving
>> qemu-kvm yet a bit closer to upstream.
>> The other highlight is the simplification of synchronization between
>> in-kernel and user space VCPU states. This area used to call a lot of
>> problems in the past because it was tricky to get things right,
>> specifically during the multi-threaded startup. The new approach pushes
>> all the sync work around reset and vmsave/load into generic code, not
>> only removing the burden from developers of, say, in-kernel APIC
>> support, but also dropping most of our kvm-specific hooks, especially in
>> the qemu-kvm tree.
>> While I tested this on various VMs around, and things look good so far,
>> I wouldn't be surprised if there are some regressions remaining,
>> specifically in the non-x86 parts that I wasn't able to test or even
>> build. Please have a careful look!
> The good news on that part is that apart from IA64, all other archs are 
> broken in qemu-kvm anyways, but work on upstream qemu. So moving towards 
> upstream definitely helps here.

OK, then you probably want my corresponding uq/master series in order to
test. Will try to roll them out ASAP.


Siemens AG, Corporate Technology, CT T DE IT 1
Corporate Competence Center Embedded Linux

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