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Message-ID: <20201201073906.GP2414@hirez.programming.kicks-ass.net>
Date: Tue, 1 Dec 2020 08:39:06 +0100
From: Peter Zijlstra <peterz@...radead.org>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Thomas Gleixner <tglx@...utronix.de>,
"Paul E. McKenney" <paulmck@...nel.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
the arch/x86 maintainers <x86@...nel.org>
Subject: Re: [GIT pull] locking/urgent for v5.10-rc6
On Mon, Nov 30, 2020 at 09:55:44AM -0800, Linus Torvalds wrote:
> Yes, yes, I can very well imagine some hardware doing a "idle until
> you sense an interrupt, but don't actually take it". It's not
> _impossible_. But it's certainly not normal.
A lot of hardware actually does that, including modern x86. But yes, not
nearly everything.
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