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Re: [Qemu-devel] [v3 PATCH] target-mips: implement UserLocal Register


From: James Hogan
Subject: Re: [Qemu-devel] [v3 PATCH] target-mips: implement UserLocal Register
Date: Thu, 29 May 2014 15:29:41 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.5.0

On 29/05/14 14:26, Peter Maydell wrote:
> On 29 May 2014 14:22, James Hogan <address@hidden> wrote:
>> loadvm/migration will write Config3, possibly with a different value if
>> the snapshot being loaded is an older one without userlocal support.
> 
> Migration load always happens with a freshly reset system,
> so this isn't a problem.

Why does that make a difference? The snapshot may have been saved on a
slightly different version without that bit set (if that isn't supported
then we may as well not bother trying to support loading different
snapshot versions). Also loadvm can happen at any time, not just after
reset.

Is this patch missing something to actually set that bit in Config3?

Cheers
James



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