Re: [PATCH v7 1/1] arm/kvm: add support for MTE

[Cornelia Huck]

On Tue, May 02 2023, Richard Henderson <richard.henderson@linaro.org> wrote:

> On 5/2/23 10:03, Cornelia Huck wrote:
>> Has anyone been able to access a real system with MTE? (All the systems
>> where I had hoped that MTE would be available didn't have MTE in the end
>> so far, so I'd be interested to hear if anybody else already got to play
>> with one.) Honestly, I don't want to even try to test migration if I only
>> have access to MTE on the FVP...
>
> Well there's always MTE on QEMU with TCG.  :-)

Which actually worked very nicely to verify my test setup :)

>
> But I agree that while it's better than FVP, it's still slow, and difficult 
> to test 
> anything at scale.  I have no objection to getting non-migratable MTE on KVM 
> in before 
> attempting to solve migration.

I'm wondering whether we should block migration with MTE enabled in
general... OTOH, people probably don't commonly try to migrate with tcg,
unless they are testing something?