From: Sam Ravnborg <sam@ravnborg.org>
To: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Cc: Arnd Bergmann <arnd@kernel.org>,
John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>,
"David S . Miller" <davem@davemloft.net>,
Andreas Larsson <andreas@gaisler.com>,
Helge Deller <deller@gmx.de>,
Alexander Viro <viro@zeniv.linux.org.uk>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Alan Stern <stern@rowland.harvard.edu>,
Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.com>,
sparclinux@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-usb@vger.kernel.org, linux-fbdev@vger.kernel.org,
dri-devel@lists.freedesktop.org, linux-sound@vger.kernel.org
Subject: Re: [PATCH 00/27] sparc32: sunset sun4m and sun4d
Date: Wed, 20 Dec 2023 16:22:24 +0100 [thread overview]
Message-ID: <20231220152224.GA867968@ravnborg.org> (raw)
In-Reply-To: <3d733b57-884a-4755-a32a-74061b48e182@ilande.co.uk>
Hi Mark,
On Wed, Dec 20, 2023 at 11:30:27AM +0000, Mark Cave-Ayland wrote:
> On 20/12/2023 10:47, Arnd Bergmann wrote:
>
> > On Wed, Dec 20, 2023, at 09:54, John Paul Adrian Glaubitz wrote:
> > > On Wed, 2023-12-20 at 08:36 +0000, Arnd Bergmann wrote:
> > > > All of these were found through inspection rather than testing,
> > > > so there is a good chance that other fatal kernel bugs prevent
> > > > testing in qemu, at least until the fixes from Andreas' tree
> > > > are included.
> > >
> > > Andreas has fixes for these issues?
> >
> > Not sure, all I know is that
> >
> > - Andreas has some fixes for Leon in his tree
> > - Sam is unable to boot mainline in qemu
> > - There is an unknown set of bugs in sparc32 since it has not
> > been tested for many years without Andreas' patches
> >
> > it appears that the qemu developers are still testing the sun4m
> > model against old Linux and Solaris installations [1], but
> > failure to run the leon3 model could still be any combination
> > of kernel, qemu or configuration problems.
> >
> > Arnd
> >
> > [1] https://wiki.qemu.org/Documentation/Platforms/SPARC#Compatibility
>
> Hi all: I'm one of the QEMU sun4m and sun4u maintainers so thought it would
> be worth a few comments here.
I can imagine that the proposal to drop sun4m from the kernel is then
not the best news this December - sorry about that.
>
> My SPARC work on QEMU is unsponsored, so of course it is reliant upon me
> finding time between work and family to fix various bugs. This means that I
> simply don't have the time to constantly build and test the latest kernels:
> what generally happens is that someone pings me a regression bug report when
> something breaks and provides a test kernel/rootfs for me to look at. In the
> past both Rob Landley and Guenter Roeck have often flagged regressions and
> kindly provided these for me.
>
> Other than that I just assume that everything is still working against the
> upstream kernel.
It is a fantastic tool that we can build and boot a kernel using qemu
and your work is appreciated - thanks!
>
> The leon3_generic machine is maintained by different people so I'd suggest
> contacting them: see [1] for their contact details. I see there is an
> avocado boot test for the leon3_generic machine included within the QEMU
> source tree, but it uses a downloadable image of HelenOS rather than Linux.
Thanks for the pointer, I will try to reach out to them when I have
something a bit more solid than "it does not work".
I tried to hack around a little in qemu and I have an idea where things
goes wrong. The leon_generic assumes another address layout than what is
used by the kernel, so the very first jump to a kernel address fails.
Sam
next prev parent reply other threads:[~2023-12-20 15:22 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-19 22:03 [PATCH 00/27] sparc32: sunset sun4m and sun4d Sam Ravnborg via B4 Relay
2023-12-19 22:03 ` [PATCH 01/27] sparc32: Update defconfig to LEON SMP Sam Ravnborg via B4 Relay
2023-12-19 22:23 ` Arnd Bergmann
2023-12-20 6:43 ` Sam Ravnborg
2023-12-20 8:37 ` Arnd Bergmann
2023-12-19 22:03 ` [PATCH 02/27] sparc32: Drop sun4m/sun4d support from head_32.S Sam Ravnborg via B4 Relay
2023-12-19 22:03 ` [PATCH 03/27] sparc32: Drop floppy support Sam Ravnborg via B4 Relay
2023-12-19 22:03 ` [PATCH 04/27] sparc32: Drop sun4m specific led driver Sam Ravnborg via B4 Relay
2023-12-19 22:03 ` [PATCH 05/27] sparc32: Drop sun specific power management drivers Sam Ravnborg via B4 Relay
2023-12-19 22:03 ` [PATCH 06/27] sparc32: Drop auxio support Sam Ravnborg via B4 Relay
2023-12-19 22:03 ` [PATCH 07/27] sparc32: Drop run-time patching of ipi trap Sam Ravnborg via B4 Relay
2023-12-19 22:03 ` [PATCH 08/27] sparc32: Drop patching of interrupt vector Sam Ravnborg via B4 Relay
2023-12-19 22:03 ` [PATCH 09/27] sparc32: Drop sun4m/sun4d specific irq handling Sam Ravnborg via B4 Relay
2023-12-19 22:03 ` [PATCH 10/27] sparc32: Drop sun4d/sun4m smp support Sam Ravnborg via B4 Relay
2023-12-19 22:03 ` [PATCH 11/27] sparc32: Drop pcic support Sam Ravnborg via B4 Relay
2023-12-19 22:03 ` [PATCH 12/27] sparc32: Drop mbus support Sam Ravnborg via B4 Relay
2023-12-19 22:03 ` [PATCH 13/27] sparc32: Drop unused function __get_{phys,iospace} Sam Ravnborg via B4 Relay
2023-12-19 22:03 ` [PATCH 14/27] sparc32: Drop unused mmu models Sam Ravnborg via B4 Relay
2023-12-19 22:03 ` [PATCH 15/27] sparc32: Drop check for sparc_model Sam Ravnborg via B4 Relay
2023-12-19 22:03 ` [PATCH 16/27] sparc32: Drop use of sparc_config Sam Ravnborg via B4 Relay
2023-12-19 22:03 ` [PATCH 17/27] sparc32: Drop run-time patching of ASI instructions Sam Ravnborg via B4 Relay
2024-02-16 17:12 ` Andreas Larsson
2024-02-17 11:59 ` Sam Ravnborg
2023-12-19 22:03 ` [PATCH 18/27] sparc32: Drop support for 7 register windows Sam Ravnborg via B4 Relay
2023-12-19 22:03 ` [PATCH 19/27] sparc32: Drop additional sun4d bits Sam Ravnborg via B4 Relay
2023-12-19 22:03 ` [PATCH 20/27] sparc32: Drop unused prom ranges support Sam Ravnborg via B4 Relay
2023-12-19 22:03 ` [PATCH 21/27] sparc32: Drop unused iommu support Sam Ravnborg via B4 Relay
2023-12-19 22:03 ` [PATCH 22/27] sparc32: Drop sun4m irq support Sam Ravnborg via B4 Relay
2023-12-19 22:03 ` [PATCH 23/27] sparc32: Drop unused trampoline code Sam Ravnborg via B4 Relay
2023-12-19 22:03 ` [PATCH 24/27] sparc32: Drop config SPARC_LEON Sam Ravnborg via B4 Relay
2023-12-20 5:52 ` Greg Kroah-Hartman
2023-12-19 22:03 ` [PATCH 25/27] sparc32: Drop sbus support Sam Ravnborg via B4 Relay
2023-12-19 22:03 ` [PATCH 26/27] sbus: char: Drop now unused uctrl driver Sam Ravnborg via B4 Relay
2023-12-19 22:03 ` [PATCH 27/27] fbdev/p9100: Drop now unused driver p9100 Sam Ravnborg via B4 Relay
2024-01-02 8:26 ` Thomas Zimmermann
2024-01-02 16:31 ` Sam Ravnborg
2023-12-20 8:36 ` [PATCH 00/27] sparc32: sunset sun4m and sun4d Arnd Bergmann
2023-12-20 9:28 ` John Paul Adrian Glaubitz
2023-12-20 9:34 ` David Laight
2023-12-20 9:51 ` Arnd Bergmann
2023-12-20 9:54 ` John Paul Adrian Glaubitz
2023-12-20 10:47 ` Arnd Bergmann
2023-12-20 11:30 ` Mark Cave-Ayland
2023-12-20 15:22 ` Sam Ravnborg [this message]
2023-12-20 17:25 ` John Paul Adrian Glaubitz
2023-12-22 15:27 ` Andreas Larsson
2023-12-20 14:42 ` Kjetil Oftedal
2024-02-04 19:21 ` Sam Ravnborg
2024-02-05 5:12 ` John Paul Adrian Glaubitz
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