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Re: [Qemu-trivial] [Qemu-devel] [PATCH] Fix pflash_cfi01 to restore flas

From: Johny Mattsson
Subject: Re: [Qemu-trivial] [Qemu-devel] [PATCH] Fix pflash_cfi01 to restore flash command/array state after migration
Date: Fri, 22 Aug 2014 17:53:31 +1000

On 21 August 2014 19:48, Markus Armbruster <address@hidden> wrote:
Doesn't this break migration to/from unfixed versions?

It might. It is not something we've tried here, and I'm certainly not familiar enough with QEMU internals myself to say one way or another. We encountered this issue in what I can best describe as a short-and-furious proof-of-concept project, and as part of the wrapping up of this I'm going over our change logs to see if anything can be contributed back upstream. It seemed like a trivial fix in the tree, but I acknowledge it may have ramifications we didn't consider.

I suspect you need a subsection.  Initialize ->romd = 1, then let the
subsection override it.

And here I'm well and truly out of my depth! If someone who actually knows what they're doing would like to run with this, please do.

Sorry to effectively do a dump-and-run here - I hope its a net positive at least.

Johny Mattsson
Senior Software Engineer

DiUS Computing Pty. Ltd.
where ideas are engineered

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