linux-kernel - Re: [RFC PATCH v3 06/15] jump_label: Add forceful jump label type

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Message-ID: <20241121153801.es5y72zjefzvbrnk@jpoimboe>
Date: Thu, 21 Nov 2024 07:38:01 -0800
From: Josh Poimboeuf <jpoimboe@...nel.org>
To: Peter Zijlstra <peterz@...radead.org>
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Subject: Re: [RFC PATCH v3 06/15] jump_label: Add forceful jump label type

On Thu, Nov 21, 2024 at 12:00:20PM +0100, Peter Zijlstra wrote:
> But yeah, this is not quite the same as not marking anything and simply
> forcing the IPI when the target address is noinstr.
> 
> And having written all that; perhaps that is the better solution, it
> sticks the logic in text_poke and ensure it automagically work for all
> its users, obviating the need for special marking.
> 
> Is that what you were thinking?

Yes, though I can't take credit for the idea as that's what I thought
you were suggesting!  That seems simpler and more bulletproof.

-- 
Josh