linux-kernel - Re: [PATCH 1/2] sched: add virt sched domain for the guest

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

Message-ID: <1337761402.9698.62.camel@twins>
Date:	Wed, 23 May 2012 10:23:22 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Liu ping fan <kernelfans@...il.com>
Cc:	kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
	qemu-devel@...gnu.org, Ingo Molnar <mingo@...hat.com>,
	Avi Kivity <avi@...hat.com>,
	Anthony Liguori <anthony@...emonkey.ws>
Subject: Re: [PATCH 1/2] sched: add virt sched domain for the guest

On Wed, 2012-05-23 at 16:10 +0800, Liu ping fan wrote:
> the movement of vcpu
> threads among host nodes will break the topology initialized by -numa
> option. 

You want to remap vcpu to nodes? Are you bloody insane? cpu:node maps
are assumed static, you cannot make that a dynamic map and pray things
keep working.

Also, have you any idea how expensive it is to rebuild the topology vs
migrating the vcpu?


--
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/