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

[Oliver Upton]

Hi Sebastian,

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?

-- 
Thanks,
Oliver