linux-kernel - Re: [PATCH v2 08/13] sparc64: vdso: Switch to the generic vDSO library

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Message-ID: <7dd79e0407696f975d545d78b3083ef06a838082.camel@physik.fu-berlin.de>
Date: Fri, 29 Aug 2025 17:24:16 +0200
From: John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>
To: Thomas Weißschuh <thomas.weissschuh@...utronix.de>
Cc: Andreas Larsson <andreas@...sler.com>, Andy Lutomirski
 <luto@...nel.org>,  Thomas Gleixner <tglx@...utronix.de>, Vincenzo Frascino
 <vincenzo.frascino@....com>, Arnd Bergmann <arnd@...db.de>,  "David S.
 Miller" <davem@...emloft.net>, Nagarathnam Muthusamy
 <nagarathnam.muthusamy@...cle.com>, Nick Alcock	 <nick.alcock@...cle.com>,
 John Stultz <jstultz@...gle.com>, Stephen Boyd	 <sboyd@...nel.org>,
 linux-kernel@...r.kernel.org, sparclinux@...r.kernel.org
Subject: Re: [PATCH v2 08/13] sparc64: vdso: Switch to the generic vDSO
 library

Hi Thomas,

On Fri, 2025-08-29 at 12:52 +0200, Thomas Weißschuh wrote:
> On Fri, Aug 29, 2025 at 12:40:59PM +0200, John Paul Adrian Glaubitz wrote:
> > On Fri, 2025-08-29 at 12:37 +0200, Thomas Weißschuh wrote:
> > > In the meantime I installed a full Debian, but the bug is still not
> > > reproducible in QEMU.
> > 
> > Please keep in mind that QEMU emulates sun4u (on UltraSPARC II) while
> > Andreas was testing on sun4v (on Niagara 4). There might be differences.
> 
> I am aware. Unfortuntely I don't have anything else available.
> If anybody could test this on real sun4u that would be great.
> Or teach me how to use sun4v QEMU without it crashing on me.
> In the past you offered access to a physical machine.
> Does this offer still stand? Does it also run into the bug?

We have a SPARC T5 in the Debian project that can also be used for that matter.

It's currently out of service and will be back online next week if all goes well.

Adrian

-- 
 .''`.  John Paul Adrian Glaubitz
: :' :  Debian Developer
`. `'   Physicist
  `-    GPG: 62FF 8A75 84E0 2956 9546  0006 7426 3B37 F5B5 F913