linux-kernel - Re: [PATCH 23/49] x86/alternatives: Simplify smp_text_poke_single() by using tp

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Message-ID: <Z-w1T-CAr-TPXrsT@gmail.com>
Date: Tue, 1 Apr 2025 20:49:51 +0200
From: Ingo Molnar <mingo@...nel.org>
To: Peter Zijlstra <peterz@...radead.org>
Cc: linux-kernel@...r.kernel.org, Juergen Gross <jgross@...e.com>,
	"H . Peter Anvin" <hpa@...or.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Borislav Petkov <bp@...en8.de>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH 23/49] x86/alternatives: Simplify smp_text_poke_single()
 by using tp_vec and existing APIs


* Peter Zijlstra <peterz@...radead.org> wrote:

> On Fri, Mar 28, 2025 at 02:26:38PM +0100, Ingo Molnar wrote:
> > Instead of constructing a vector on-stack, just use the already
> > available batch-patching vector - which should always be empty
> > at this point.
> > 
> > This will allow subsequent simplifications.
> 
> This should go before patch 20, otherwise you'll have this intermediate
> state where we trip the WARN, no?

Yeah, indeed - I've shuffled them around in the latest 
WIP.x86/alternatives.

Thanks,

	Ingo