Re: [Qemu-arm] [Qemu-devel] [PATCH v1 2/2] target-arm: Enable EL2 for the A53s and A57s

[Alistair Francis]

On Fri, May 6, 2016 at 6:51 PM, Edgar E. Iglesias
<address@hidden> wrote:
> On Fri, May 06, 2016 at 11:25:52PM +0100, Peter Maydell wrote:
>> On 6 May 2016 at 19:11, Alistair Francis <address@hidden> wrote:
>> > Enable EL2 by default for the A53s and A57s.
>> >
>> > Signed-off-by: Alistair Francis <address@hidden>
>>
>> I don't really want to do this until we actually have
>> something approaching a workable EL2 implementation
>> (ideally including support in the GIC, since EL2's
>> not much good without it). I'd hope that software ought
>> to be able to work with an "EL3, but no EL2" CPU, since
>> that's a valid combination, unless it's very strongly
>> tied to a particular h/w implementation.
>
> Yes, I agree, we've got a few more things to take care of.

I haven't been keeping up with the EL2 status on mainline, so if you
guys don't want to enable it yet that's fine with me. Just thought I'd
try.

I assume you don't have any fundamental problems with the first patch
then, so hopefully at least that can get in.

I might have to look at disabling EL3 support for the ZynqMP machine
form the command line, as I can't boot Linux with EL3 but not EL2.

Thanks,

Alistair

>
> Cheers,
> Edgar
>