Re: [PATCH] x86/split_lock: Restore warn mode (and add a new one) to avoid userspace regression

[Dave Hansen]

On 9/29/22 07:57, Guilherme G. Piccoli wrote:
> On 28/09/2022 18:50, Dave Hansen wrote:
>> [...]
>> It boils down to either:
>>  * The misery is good and we keep it as-is, or
>>  * The misery is bad and we kill it
>>
>> My gut says we should keep the warnings and kill the misery.  The folks
>> who are going to be able to fix the issues are probably also the ones
>> looking at dmesg and don't need the extra hint from the misery.  The
>> folks running Windows games don't look at dmesg and just want to play
>> their game without misery.
>>
> Hi Dave, thanks for your response. I really appreciated your reasoning,
> and I think it's a good argument. In the end, adding misery would harm
> the users that are unlikely to be able to fix (or at least, fix quickly)
> the split lock situation, like games or legacy/proprietary code.
> 
> I have a revert removing the misery ready and tested, let me know if I
> should submit it.

I'm a bit of a late arrival to the split lock party, so I'm a bit
hesitant to merge any changes immediately.

How about we give it a few weeks and see if the current behavior impacts
anyone else?  Maybe the best route will be more clear then.