Re: [PATCH RESEND] x86/split_lock: Make split lock mitigation sleep duration configurable
From: Borislav Petkov
Date: Fri Oct 31 2025 - 07:06:04 EST
On Fri, Oct 31, 2025 at 10:46:31AM +0800, Fushuai Wang wrote:
> I think there are two main reasons for making the split lock mitigation
> sleep duration configurable:
IOW, you want to disable split lock.
What's the point otherwise?
Apparently you want to do some sort of a solution for a cloud environment but
you can't make everyone happy.
So you either allow split locks or you slow down offenders. Making this
configurable doesn't make a whole lotta sense to me unless you write a proper,
concrete use case which justifies this and not some AI-generated bla.
If not, you can just as well keep this in your kernels and use it there.
I do not see the point of adding this in the upstream kernel.
Thx.
--
Regards/Gruss,
Boris.
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