linux-kernel - Re: [PATCH 00/10] sparc64: Fix CPU online bug and warning fixes

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Message-ID: <20240330183937.GA191882@ravnborg.org>
Date: Sat, 30 Mar 2024 19:39:37 +0100
From: Sam Ravnborg <sam@...nborg.org>
To: Arnd Bergmann <arnd@...db.de>
Cc: Andreas Larsson <andreas@...sler.com>,
	"David S . Miller" <davem@...emloft.net>,
	sparclinux@...r.kernel.org, Nick Bowler <nbowler@...conx.ca>,
	linux-kernel@...r.kernel.org, Atish Patra <atish.patra@...cle.com>,
	stable@...r.kernel.org, Bob Picco <bob.picco@...cle.com>,
	Vijay Kumar <vijay.ac.kumar@...cle.com>
Subject: Re: [PATCH 00/10] sparc64: Fix CPU online bug and warning fixes

Hi Arnd,

On Sat, Mar 30, 2024 at 11:19:37AM +0100, Arnd Bergmann wrote:
> On Sat, Mar 30, 2024, at 10:57, Sam Ravnborg via B4 Relay wrote:
> > Nick Bowler reported that sparc64 failed to bring all his CPU's online,
> > and that turned out to be an easy fix.
> >
> > The sparc64 build was rather noisy with a lot of warnings which had
> > irritated me enough to go ahead and fix them.
> > With this set of patches my arch/sparc/ is almost warning free for
> > all{no,yes,mod}config + defconfig builds.
> 
> Patches 1-9 look good to me,
> 
> Acked-by: Arnd Bergmann <arnd@...db.de>
Thanks!

> 
> > There is one warning about "clone3 not implemented", which I have ignored.
> >
> > The warning fixes hides the fact that sparc64 is not yet y2038 prepared,
> > and it would be preferable if someone knowledgeable would fix this
> > poperly.
> 
> The clone3 bug has been around for ages, it's probably not even that
> hard to fix and just needs a little bit of testing.
I looked briefly and it involves a better understanding of the window
register manipulation than what I have today.

> 
> If anyone wants to work on the time64 support for the vdso, I can
> explain the details for how it's done.
I am happy to type the patches but need to rely on others for testing.
Anything to help me get started would be super.

	Sam