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Re: [Qemu-devel] RFC: guest-side retrieval of fw_cfg file
From: |
Gabriel L. Somlo |
Subject: |
Re: [Qemu-devel] RFC: guest-side retrieval of fw_cfg file |
Date: |
Tue, 14 Jul 2015 14:31:55 -0400 |
User-agent: |
Mutt/1.5.23 (2014-03-12) |
On Tue, Jul 14, 2015 at 02:23:14PM -0400, Gabriel L. Somlo wrote:
> On Tue, Jul 14, 2015 at 10:43:46AM +0100, Richard W.M. Jones wrote:
> > On Mon, Jul 13, 2015 at 04:09:37PM -0400, Gabriel L. Somlo wrote:
> > > 3. I'm currently only handling x86 and I/O ports. I could drop the
> > > fw_cfg_dmi_whitelist and just check the signature, using mmio where
> > > appropriate, but I don't have a handy-dandy set of VMs for those
> > > architectures on which I could test. Wondering if that's something
> > > we should have before I officially try to submit this to the kernel,
> > > or whether it could wait for a second iteration.
> >
> > $ virt-builder --arch armv7l fedora-22
> > or:
> > $ virt-builder --arch aarch64 fedora-22
> > then:
> > $ virt-builder --get-kernel fedora-22.img
> >
> > and then boot is using the right qemu command, probably something
> > like:
> >
> > $ qemu-system-arm \
> > -M virt,accel=tcg \
> > -cpu cortex-a15 \
> > -kernel vmlinuz-4.0.4-301.fc22.armv7hl+lpae \
> > -initrd initramfs-4.0.4-301.fc22.armv7hl+lpae.img \
> > -append "console=ttyAMA0 root=/dev/vda3 ro" \
> > -drive file=fedora-22.img,if=none,id=hd \
> > -device virtio-blk-device,drive=hd \
> > -serial stdio
> >
> > The root password is printed in virt-builder output.
>
> Thanks, that should help (once I figure out how to *really* start it,
> right now it hangs at "reached target basic system", and spews garbage
> if I hit 'escape', probably in an attempt to paint the text-mode
> progress bar... Then it throws me into a dracut prompt, complaining
> that it can't find /dev/vda3...
>
> But I'm sure I'll sort it out eventually :)
And I did figure it out, and it was a dumb typo, so nevermind this
part of the thread going forward :)
Thanks much,
--Gabriel
Re: [Qemu-devel] RFC: guest-side retrieval of fw_cfg file, Laszlo Ersek, 2015/07/14
Re: [Qemu-devel] RFC: guest-side retrieval of fw_cfg file, Matt Fleming, 2015/07/15