RE: [PATCH v10 6/6] x86/split_lock: Enable split lock detection by kernel parameter

[David Laight]

From: Ingo Molnar
> Sent: 21 November 2019 17:12
> * Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:
...
> > This feature MUST be default enabled, otherwise everything will
> > be/remain broken and we'll end up in the situation where you can't use
> > it even if you wanted to.
> 
> Agreed.

Before it can be enabled by default someone needs to go through the
kernel and fix all the code that abuses the 'bit' functions by using them
on int[] instead of long[].

I've only seen one fix go through for one use case of one piece of code
that repeatedly uses potentially misaligned int[] arrays for bitmasks.

	David

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