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[Qemu-devel] Re: [PATCH 8/8] kvm: Rework VCPU reset
From: |
Jan Kiszka |
Subject: |
[Qemu-devel] Re: [PATCH 8/8] kvm: Rework VCPU reset |
Date: |
Mon, 04 May 2009 11:29:03 +0200 |
User-agent: |
Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv:1.8.1.12) Gecko/20080226 SUSE/2.0.0.12-1.1 Thunderbird/2.0.0.12 Mnenhy/0.7.5.666 |
Avi Kivity wrote:
> Jan Kiszka wrote:
>> Avi Kivity wrote:
>>
>>> Jan Kiszka wrote:
>>>
>>>> Use standard callback with highest order to synchronize VCPU on reset
>>>> after all device callbacks were execute. This allows to remove the
>>>> special kvm hook in qemu_system_reset.
>>>>
>>> Is this needed for the lapic reset callback?
>>>
>>> If so, we can express the dependency explicitly rather than with a
>>> priority, by having cpu reset notifiers invoked when the cpu is
>>> reset. In the case of the lapic, I don't think we need an abstract
>>> mechanism;
>>> the lapic is part of the cpu, not some random device.
>>>
>>> Maybe we should even save/load it as part of the cpu.
>>>
>>>
>>
>> QEMU is not only providing the LAPIC, but also covering the old
>> dedicated version. That makes at least HW instantiating a bit more
>> complex.
>>
>>
>
> What do you mean by 'old dedicated version'?
Separate chip, not part of the CPU. Some 486 system used to have this IIRC.
Jan
--
Siemens AG, Corporate Technology, CT SE 2
Corporate Competence Center Embedded Linux
- [Qemu-devel] [PATCH 4/8] kvm: Rework dirty bitmap synchronization, (continued)
- [Qemu-devel] [PATCH 4/8] kvm: Rework dirty bitmap synchronization, Jan Kiszka, 2009/05/01
- [Qemu-devel] [PATCH 3/8] kvm: Fix dirty log temporary buffer size, Jan Kiszka, 2009/05/01
- [Qemu-devel] [PATCH 6/8] kvm: Fix framebuffer dirty log sync, Jan Kiszka, 2009/05/01
- [Qemu-devel] [PATCH 5/8] kvm: Add missing bits to support live migration, Jan Kiszka, 2009/05/01
- [Qemu-devel] [PATCH 8/8] kvm: Rework VCPU reset, Jan Kiszka, 2009/05/01
[Qemu-devel] [PATCH 7/8] Introduce reset notifier order, Jan Kiszka, 2009/05/01
[Qemu-devel] Re: [PATCH 0/8] kvm: Fixes, cleanups and live migration, Anthony Liguori, 2009/05/01
[Qemu-devel] Re: [PATCH 0/8] kvm: Fixes, cleanups and live migration, Anthony Liguori, 2009/05/01