[PATCH] arm64: KVM: Enable support for Cortex-A72

[Suzuki K Poulose]

On 24/08/16 10:23, Shannon Zhao wrote:
>
>
> On 2016/8/24 16:57, Suzuki K Poulose wrote:
>> On 24/08/16 08:21, Shannon Zhao wrote:
>>> In order to allow KVM to run on Cortex-A72 physical cpus, enable KVM
>>> support for Cortex-A72.
>>
>> Do we really need this change ? Given that A72 is using the generic_v8
>> table,
>> it will automatically be supported via the GENERIC_V8 target. That was
>> added
>> just for this purpose. The pre-existing targets were preserved so that
>> we don't break the ABI for older user space.
>>
> Yes, this works for qemu with "-cpu host". But if it specifies the cpu
> type with "-cpu cortex-a72". It will fail without this patch.

Thats because you specify the expected target from the kernel in Qemu.

I don't know what are the plans for Qemu. Are we going to add every single
ARM CPU released to the target list both in Kernel and Qemu ? e.g, what about
A35, A73 and others from the partners ?

Suzuki

>
> The corresponding qemu patches could be found at [1].
> [1] https://lists.gnu.org/archive/html/qemu-devel/2016-08/msg03653.html
>
> Thanks,
>