[PATCH v2 0/6] KVM: arm64: emulation for CTR_EL0

[Sebastian Ott]

Hi Oliver,

On Wed, 1 May 2024, Oliver Upton wrote:
> On Fri, Apr 26, 2024 at 12:49:44PM +0200, Sebastian Ott wrote:
>> Hej folks,
>>
>> I'm looking into supporting migration between 2 Ampere Altra (Max)
>> machines (using Neoverse-N1). They are almost identical regarding
>> their feature id register state except for CTR_EL0.DIC which is set
>> on one machine but not the other.
>>
>> CTR_EL0 is currently marked as invariant and migrating a VM between
>> those 2 machines using qemu fails.
>
> I left some feedback on the series, but in addition to that would it be
> possible to augment the set_id_regs selftest to exercise the CTR_EL0
> mutability?

Yes, sure!

Thanks,
Sebastian