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Date: Fri, 18 Dec 2020 22:41:04 +0100 From: Arnd Bergmann <arnd@...nel.org> To: Sam Ravnborg <sam@...nborg.org> Cc: David S Miller <davem@...emloft.net>, sparclinux <sparclinux@...r.kernel.org>, Andreas Larsson <andreas@...sler.com>, Alexey Dobriyan <adobriyan@...il.com>, Al Viro <viro@...iv.linux.org.uk>, Andrew Morton <akpm@...ux-foundation.org>, Anshuman Khandual <anshuman.khandual@....com>, Arvind Sankar <nivedita@...m.mit.edu>, Christian Brauner <christian.brauner@...ntu.com>, Denis Efremov <efremov@...ux.com>, Dmitry Safonov <0x7f454c46@...il.com>, Geert Uytterhoeven <geert@...ux-m68k.org>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Ira Weiny <ira.weiny@...el.com>, Lorenzo Pieralisi <lorenzo.pieralisi@....com>, Mark Rutland <mark.rutland@....com>, Mike Rapoport <rppt@...nel.org>, Pekka Enberg <penberg@...nel.org>, Peter Zijlstra <peterz@...radead.org>, Stephen Rothwell <sfr@...b.auug.org.au>, Thomas Gleixner <tglx@...utronix.de>, Will Deacon <will@...nel.org>, Willy Tarreau <w@....eu>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, debian-sparc@...ts.debian.org Subject: Re: [RFC PATCH 0/13] sparc32: sunset sun4m and sun4d On Fri, Dec 18, 2020 at 7:43 PM Sam Ravnborg <sam@...nborg.org> wrote: > > The sun4m and sun4d based SPARC machines was very popular in the > 90'ties and was then replaced by the more powerful sparc64 > class of machines. > Today there is only Gentoo that to my best knowledge supports > sparc32 and people have moved on to more capable HW. > > Cobham Gaisler have variants of the LEON processer that > runs sparc32 - and they are in production today. > > With this patchset I propose to sunset sun4m and sun4d and move > focus to a more streamlined support for LEON. > > One downside is that qemu supports sun4m - and we may loose > some testing possibilities when sun4m is dropped. qemu supports > LEON to some degree - I have not yet tried it out. > > Andreas from Gaisler have indicated that they may be more active > upstream on sparc32 - and this will only be easier with a kernel > where the legacy stuff is dropped. > > I decided to divide up the patches to make it possible to review > the set as some of the patches touches assembler and these parts > could use some extra eyes if we move forward with this. > > For now it builds with the configurations I have tried. Thank you for doing this, it looks like a very nice cleanup. > Looking forward for feedback if sunsetting is a good idea or not. I have no insight on whether there are any users left that would miss it, but I'm fairly sure that there are lots of people that would rather see it gone. > Note: I dunno why git does not see floppy_64.h=>floppy.h as a rename?? It doesn't do that if the old name existed already. Arnd
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