Re: [Xen-devel] Upstream QEMU based stubdom and rump kernel

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Tue, Mar 17, 2015 at 02:54:09PM +0000, Ian Campbell wrote:
> On Tue, 2015-03-17 at 14:29 +0000, Wei Liu wrote:
> > 2. The ability to access files in Dom0. That will be used to write to /
> >    read from QEMU state file.
> 
> This requirement is not as broad as you make it sound.
> 

Yes. You're right.

> All which is really required is the ability to slurp in or write out a
> blob of bytes to a service running in a control domain, not actual

This is more accurate.

> ability to read/write files in dom0 (which would need careful security
> consideration!).
> 
> For the old qemu-traditional stubdom for example this is implemented as
> a pair of console devices (one r/o for restore + one w/o for save) which
> are setup by the toolstack at start of day and pre-plumbed into two
> temporary files.
> 

Unfortunately I don't think that hack in mini-os is upstreamable in rump
kernel.

Wei.

> Ian.

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