Re: [patch v3 34/36] x86/smpboot: Implement a bit spinlock to protect the realmode stack

From: Thomas Gleixner
Date: Tue May 09 2023 - 09:47:43 EST

On Tue, May 09 2023 at 15:13, Peter Zijlstra wrote:
> On Mon, May 08, 2023 at 09:44:22PM +0200, Thomas Gleixner wrote:
> Do we really care about performance here; or should we pick the simpler
> form? Also, 'lock' is a prefix, not an instruction.

Right. KISS is the way to go.