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

[Igor Mammedov]

On Wed, 15 Jul 2015 17:08:27 +0300
"Michael S. Tsirkin" <address@hidden> wrote:

> 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.

I don't see any conflict here so far, it's just guest side module that
accesses fw_cfg.