linux-kernel - Re: [PATCH 2/2] x86/MCE: Add command line option to extend MCE Records pool

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Date: Mon, 12 Feb 2024 17:07:03 -0800
From: "Paul E. McKenney" <paulmck@...nel.org>
To: Borislav Petkov <bp@...en8.de>
Cc: "Luck, Tony" <tony.luck@...el.com>,
	Yazen Ghannam <yazen.ghannam@....com>,
	"Naik, Avadhut" <avadnaik@....com>,
	"Mehta, Sohil" <sohil.mehta@...el.com>,
	"x86@...nel.org" <x86@...nel.org>,
	"linux-edac@...r.kernel.org" <linux-edac@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Avadhut Naik <avadhut.naik@....com>
Subject: Re: [PATCH 2/2] x86/MCE: Add command line option to extend MCE
 Records pool

On Tue, Feb 13, 2024 at 12:10:09AM +0100, Borislav Petkov wrote:
> On Mon, Feb 12, 2024 at 02:46:57PM -0800, Paul E. McKenney wrote:
> > The usual reason is to exclude other CPUs also doing list_add_rcu()
> > on the same list. 
> 
> Doh, it even says so in the comment above list_add_rcu().
> 
> And the traversal which is happening in NMI-like context is fine.
> 
> So phew, I think we should be fine here. Thanks!
> 
> And as it turns out, we're not going to need any of that after all as
> it looks like we can allocate the proper size from the very beginning...

Sounds even better!  ;-)

							Thanx, Paul