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Re: [Qemu-devel] [PATCH RFC] fw-cfg: support writeable blobs
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From: |
Michael S. Tsirkin |
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Subject: |
Re: [Qemu-devel] [PATCH RFC] fw-cfg: support writeable blobs |
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Date: |
Mon, 22 Feb 2016 22:12:41 +0200 |
On Mon, Feb 22, 2016 at 03:26:56PM +0100, Gerd Hoffmann wrote:
> On Mo, 2016-02-22 at 14:41 +0200, Michael S. Tsirkin wrote:
> > Useful to send guest data back to QEMU.
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> Use case?
>
> cheers,
> Gerd
VM GEN ID at least wants to pass address of some blob
in guest memory to host.
Apparently, that's also useful for nvdimm.
A reasonable way to do that seems to be to write it into
fw cfg file, this way it's also migrated automatically.
--
MST