Re: [PATCH v2 3/3] target/arm: Restrict v7A TCG cpus to TCG accel

[Claudio Fontana]

On 3/18/21 1:37 PM, Andrew Jones wrote:
> On Thu, Mar 18, 2021 at 11:38:51AM +0000, Peter Maydell wrote:
>> On Thu, 18 Mar 2021 at 11:31, Philippe Mathieu-Daudé <philmd@redhat.com> 
>> wrote:
>>> I tend to agree. The problem is for the running VMs started before
>>> 82bf7ae84ce (so up to any fork based on v5.2). I don't know what
>>> the forks are supposed to do with the running VMs if they want to
>>> migrate them to newer QEMU (or upgrade the host QEMU).
>>
>> Anybody with a Cortex-A15 KVM VM is just going to have to stay
>> with their pre-existing ancient hardware, their pre-existing
>> host kernel and their pre-existing QEMU binary. That's what
>> "we deprecated and then dropped support for this" means:
>> we no longer support running that kind of VM, so users who
>> were doing it need to either do something else instead, or
>> else just keep on going with the old versions they have.
>>
> 
> I strongly agree.
> 
> And, downstream-wise, I can't speak for anything but RHEL, but RHEL
> cannot have this problem. There are no 32-bit ARM builds for RHEL.
> 
> Thanks,
> drew
> 

I don't see a strong issue with this either, there is no 32bit support for KVM 
ARM.

Thanks,

Claudio