Was there ever a resolution to this? I am happy to file a bug in the
chromium tracker to get this looked at, if needed.
None that I'm aware of but if you could file a bug in the chromium
tracker that would be fab.
Peter
Adam
On Fri, Jul 5, 2013 at 12:16 PM, Richard W.M. Jones <rjones(a)redhat.com> wrote:
> On Fri, Jul 05, 2013 at 11:30:01AM -0400, Jon Masters wrote:
>> On 07/05/2013 05:07 AM, Richard W.M. Jones wrote:
>> > On Wed, Jul 03, 2013 at 11:59:28AM -0500, Jon wrote:
>> >> I'm pleased to announce the availability of Fedora 19 for the 2012
Samsung
>> >> Chromebook featuring ARM Exynos dual core A15 processor.
>> >
>> > Sorry to slightly hijack this thread. I will try your remix later.
>> >
>> > Reading the comments on
https://lwn.net/Articles/557132/#Comments
>> > it seems as if the news on KVM on the Chromebook is not good. It
>> > doesn't boot into HYP mode, and there's no way to make it boot into
>> > HYP mode, so KVM won't be supported. Is that right?
>>
>> That's roughly what I'd expect to be the case. There might be a signed
>> U-Boot someone has hacked that does enable HYP mode, but otherwise I
>> suspect you're out of luck. I'll ask around during Linaro Connect.
>
> I asked about this on #kvm-arm earlier today and got this long reply:
>
> 11:58 < rwmjones> I'm reading a comment here:
> 11:58 < rwmjones>
https://lwn.net/Articles/557561/
> 11:58 < rwmjones> which suggests that KVM on the Samsung Chromebook 2012 (ARM
A15 version) isn't possible because the
> bootloader doesn't boot into HYP mode
> 11:58 < rwmjones> is this true? if so is there a way around it?
> 11:59 < pm215> IIRC the bootloader gets control in secure-SVC
> 11:59 < pm215> it is from there possible to get to NS-HYP
> 11:59 < pm215> it's just that the stock bootloader doesn't do this
before booting the kernel
> 11:59 < rwmjones> so what's involved in making it work?
> 11:59 < pm215> somebody needs to write some code and get it into the
bootloader
> 12:00 < rwmjones> ok, and the bootloader can be replaced (next comment down
suggests this requires soldering)?
> 12:01 < pm215> I believe this to be true, though I don't have a chromebook
> 12:01 < pm215> I think you get the google bootloader to chain boot some other
bootloader which you do have control of, and then
> that can actually boot your os
> 12:02 < suihkulokki> or maybe we could just prepend some code in front of the
kernel zimage that switches to HYP mode?
> 12:02 < pm215> nope
> 12:02 < suihkulokki> damn
> 12:02 < pm215> we spent quite a long time being very firm that the ABI here is
"bootloader's job to get this right"
> 12:03 < pm215> there are some u-boot patches currently going through code
review to do the go-to-hyp-mode thing properly for
> arndale
> 12:03 < pm215> hopefully if they get upstream it will be more straightforward
to say "ok, I have $other-board and it needs to
> do this too"
> 12:05 < apritzel> which would require that the Chromebook u-boot support is
upstream as well
> 12:05 < apritzel> AFAIK this is not the case currently
>
> [There's more of this, but that seems to cover the main points]
>
> Reading around this, it does seem as if it's possible to get from
> secure SVC to HYP (although not easy).
>
> Rich.
>
> --
> Richard Jones, Virtualization Group, Red Hat
http://people.redhat.com/~rjones
> virt-top is 'top' for virtual machines. Tiny program with many
> powerful monitoring features, net stats, disk stats, logging, etc.
>
http://people.redhat.com/~rjones/virt-top
> _______________________________________________
> arm mailing list
> arm(a)lists.fedoraproject.org
>
https://admin.fedoraproject.org/mailman/listinfo/arm
_______________________________________________
arm mailing list
arm(a)lists.fedoraproject.org
https://admin.fedoraproject.org/mailman/listinfo/arm