From: Julien Grall <julien.grall@linaro.org>
To: Ian Campbell <Ian.Campbell@citrix.com>
Cc: patches@linaro.org, stefano.stabellini@citrix.com,
xen-devel@lists.xen.org
Subject: Re: [PATCH] xen/arm: Implement MPIDR per VCPU
Date: Thu, 13 Jun 2013 16:14:49 +0100 [thread overview]
Message-ID: <51B9E1E9.8040307@linaro.org> (raw)
In-Reply-To: <1371135553.6955.1.camel@zakaz.uk.xensource.com>
On 06/13/2013 03:59 PM, Ian Campbell wrote:
> On Fri, 2013-06-07 at 12:38 +0100, Julien Grall wrote:
>> Use different affinity for each VCPU and always expose an SMP systems to
>> the guest.
>
> What is the bad effect of not doing this for 4.3? Does it fix an
> observable bug?
I didn't notice a specific bug, Linux uses the MPDIR mainly for
optimizing scheduling. Unlike Xen, Linux doesn't use it to know which
CPU is booting so we can defer it.
--
Julien
prev parent reply other threads:[~2013-06-13 15:14 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-07 11:38 [PATCH] xen/arm: Implement MPIDR per VCPU Julien Grall
2013-06-12 15:11 ` Ian Campbell
2013-06-12 22:23 ` Julien Grall
2013-06-13 8:19 ` Ian Campbell
2013-06-13 9:46 ` Julien Grall
2013-06-13 14:59 ` Ian Campbell
2013-06-13 15:14 ` Julien Grall [this message]
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