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Re: [Qemu-devel] RFC: guest-side retrieval of fw_cfg file

From: Michael S. Tsirkin
Subject: Re: [Qemu-devel] RFC: guest-side retrieval of fw_cfg file
Date: Wed, 15 Jul 2015 17:08:27 +0300

On Mon, Jul 13, 2015 at 04:09:37PM -0400, Gabriel L. Somlo wrote:
> Hi,
> A while ago I was pondering on the options available for retrieving
> a fw_cfg blob from the guest-side (now that we can insert fw_cfg
> files on the host-side command line, see commit 81b2b8106).
> So over the last couple of weekends I cooked up the sysfs kernel module
> below, which lists all fw_cfg files under /sys/firmware/fw_cfg/<filename>.

One concern here is that there will be a conflict here if fw cfg
is used by ACPI. I don't know whether that last is a good idea
though, so maybe not a real concern. I think Igor
wanted to make it so.


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