* Pekka Enberg <penb...@kernel.org> wrote:
> Add support for booting guests to host block devices in read-only mode.
>
> Cc: Asias He <asias.he...@gmail.com>
> Cc: Cyrill Gorcunov <gorcu...@gmail.com>
> Cc: Prasad Joshi <prasadjoshi...@gmail.com>
> Cc: Sasha Levin <levinsasha...@gmail.com>
> Cc: Ingo Molnar <mi...@elte.hu>
> Signed-off-by: Pekka Enberg <penb...@kernel.org>
> ---
> tools/kvm/disk-image.c | 39 +++++++++++++++++++++++++++++++--------
> 1 files changed, 31 insertions(+), 8 deletions(-)
Nice patch - booting into the host's userspace works out of box now. The
following disk-image-less command:
./kvm run ../../arch/x86/boot/bzImage --readonly --image=/dev/sda
--params="root=/dev/vda1"
has booted all the way into the host's Fedora Rawhide userspace:
===================================
Welcome to Fedora release 16 (Rawhide)!
[...]
Fedora release 16 (Rawhide)
Kernel 2.6.39-rc3-tip+ on an x86_64 (ttyS0)
aldebaran login:
===================================
I ran this as unprivileged user (who had read access to the partitions in
question).
This is a very useful feature for testing kernels - i can test any random Linux
box's userspace via KVM, without having to copy an image there! :-)
Tested-by: Ingo Molnar <mi...@elte.hu>
Thanks,
Ingo
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