[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] Re: [PATCH 7/8] Introduce reset notifier order
From: |
Jan Kiszka |
Subject: |
[Qemu-devel] Re: [PATCH 7/8] Introduce reset notifier order |
Date: |
Sat, 02 May 2009 02:05:07 +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 |
Paul Brook wrote:
> On Friday 01 May 2009, Jan Kiszka wrote:
>> Add the parameter 'order' to qemu_register_reset and sort callbacks on
>> registration. On system reset, callbacks with lower order will be
>> invoked before those with higher order. Update all existing users to the
>> standard order 0.
>>
>> Note: At least for x86, the existing users seem to assume that handlers
>> are called in their registration order. Therefore, the patch preserves
>> this property. If someone feels bored, (s)he could try to identify this
>> dependency and express it properly on callback registration.
>
> Why do we need this? Why isn't creation order good enough?
At latest when properly deregistering reset handlers again on device
unplug, the registration order is no longer a static thing, manifested
in the code organization - which can also break due to refactoring, BTW.
Jan
signature.asc
Description: OpenPGP digital signature
- [Qemu-devel] [PATCH 6/8] kvm: Fix framebuffer dirty log sync, (continued)
[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