linux-kernel - Re: [PATCH 2/2] virtio-scsi: reset virtqueue affinity when doing cpu hotplug

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:	Wed, 06 Feb 2013 18:27:30 +0100
From:	Paolo Bonzini <pbonzini@...hat.com>
To:	gaowanlong@...fujitsu.com
CC:	Rusty Russell <rusty@...tcorp.com.au>, kvm@...r.kernel.org,
	linux-scsi@...r.kernel.org, mst@...hat.com, hutao@...fujitsu.com,
	linux-kernel@...r.kernel.org,
	virtualization@...ts.linux-foundation.org, stefanha@...hat.com
Subject: Re: [PATCH 2/2] virtio-scsi: reset virtqueue affinity when doing
 cpu hotplug

Il 16/01/2013 04:55, Wanlong Gao ha scritto:
>>> >> Add hot cpu notifier to reset the request virtqueue affinity
>>> >> when doing cpu hotplug.
>> > 
>> > You need to be careful to get_online_cpus() and put_online_cpus() here,
>> > so CPUs can't go up and down in the middle of operations.
>> > 
>> > In particular, get_online_cpus()/put_online_cpus() around calls to
>> > virtscsi_set_affinity() (except within notifiers).
> Yes, I'll take care of this, thank you.
> 

I squashed patch 1 (plus changes to get/put_online_cpus) in my
multiqueue series, and applied this one as a separate patch.

Paolo
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/