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Re: [Qemu-devel] [PATCH] aarch64: raise max_cpus to 8

From: Joel Schopp
Subject: Re: [Qemu-devel] [PATCH] aarch64: raise max_cpus to 8
Date: Wed, 20 Aug 2014 10:08:07 -0500
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0

On 08/19/2014 05:43 PM, Peter Maydell wrote:
> On 19 August 2014 22:33, Joel Schopp <address@hidden> wrote:
>> I'm running on a system with 8 cpus and it would be nice to have qemu
>> support all of them.  The attached patch does that and has been tested.
>> That said, I'm not sure if 8 is enough or if we want to bump this even higher
>> now before systems with many more cpus come along. 255 anyone?
> 8 is the limit for a GICv2 system. But yes, we could have 8 CPUs
> here; I think this was just copied over from the vexpress boards
> (which have 4 because that hardware has 4.)
So the question is do we want to wait for the GICv3 changes to be merged
to bump this to 255?  If we do want to wait then applying my patch that
bumps it to 8 is the right thing to do now.


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