On Thu, Apr 14, 2016 at 6:48 AM, Paul Bolle <pebolle(a)tiscali.nl> wrote:
Ever since v2.6.36 there's a conflict between OLPC support and
guest support: a kernel image can't both support booting OLPC x86
hardware and booting as an Lguest guest. Booting a kernel image that
tries to do both as an Lguest guest will fail with
lguest: Reinjecting trap 13 for fault at 0x1000062: Invalid argument
This means that people wanting to boot an Lguest guest on 32 bits x86
needed to build their own kernel image without OLPC support since, it
seems, Fedora 15. So let's stop pretending to support being an Lguest
guest. People wanting to have that will now not only have to disable
CONFIG_OLPC but also enable CONFIG_LGUEST_GUEST.
I'd probably disable CONFIG_OLPC too. I'm planning on submitting a
Change for F25 to drop the non-PAE kernel entirely, which will in
effect drop OLPC support as well.
(A second order effect is that both CONFIG_VIRTIO and
CONFIG_VIRTIO_CONSOLE will change from 'y' to 'm' in our builds.
Assuming a sane build system no one should notice. We'll see.)
Signed-off-by: Paul Bolle <pebolle(a)tiscali.nl>
config-x86-generic | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Tested on F22. Applies cleanly to master (F25?) but I have not even tried
The conflict between these two options is known for years now. See
(There's also a conflict with early microcode loading, see
one can actually be worked around by booting the guest with the
dis_ucode_ldr kernel parameter.)
lguest is a toy, and one that doesn't work very well it seems.
Probably OK to disable it for now in any case. Let me think it over.
> diff --git a/config-x86-generic b/config-x86-generic
> index 13de9462e556..c6c02779399f 100644
> --- a/config-x86-generic
> +++ b/config-x86-generic
> @@ -283,7 +283,7 @@ CONFIG_KVM_INTEL=m
> +# CONFIG_LGUEST_GUEST is not set
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