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[Qemu-devel] Re: [PATCH V3] floppy: save and restore DIR register

From: Jes Sorensen
Subject: [Qemu-devel] Re: [PATCH V3] floppy: save and restore DIR register
Date: Fri, 01 Apr 2011 08:54:34 +0200
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv: Gecko/20110307 Fedora/3.1.9-0.39.b3pre.fc14 Thunderbird/3.1.9

On 04/01/11 08:22, Jason Wang wrote:
> We need to keep DIR register unchanged across migration, but currently it
> depends on the media_changed flags from block layer. Since we do not
> save/restore it and the bdrv_open() called in dest node may set the
> media_changed flag when trying to open floppy image, guest driver may think 
> the
> floppy have changed after migration. To fix this, a new filed media_changed in
> FDrive strcutre was introduced in order to save and restore the it from block
> layer through pre_save/post_load callbacks.
> Signed-off-by: Jason Wang <address@hidden>

Looked through this, and it looks perfectly reasonable to me.

Reviewed-by: Jes Sorensen <address@hidden>

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