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Date: Mon, 28 Mar 2022 20:07:13 +1100 From: Michael Ellerman <mpe@...erman.id.au> To: Linus Torvalds <torvalds@...ux-foundation.org> Cc: Julia Lawall <Julia.Lawall@...ia.fr>, Alexey Kardashevskiy <aik@...abs.ru>, Anders Roxell <anders.roxell@...aro.org>, "Aneesh Kumar K.V" <aneesh.kumar@...ux.ibm.com>, Arnd Bergmann <arnd@...db.de>, Athira Jajeev <atrajeev@...ux.vnet.ibm.com>, bigunclemax@...il.com, cgel.zte@...il.com, chenjingwen6@...wei.com, Christophe JAILLET <christophe.jaillet@...adoo.fr>, Christophe Leroy <christophe.leroy@...roup.eu>, Corentin Labbe <clabbe@...libre.com>, danielhb413@...il.com, Helge Deller <deller@....de>, farosas@...ux.ibm.com, ganeshgr@...ux.ibm.com, Geoff Levand <geoff@...radead.org>, guozhengkui@...o.com, haren@...ux.ibm.com, hbathini@...ux.ibm.com, hbh25y@...il.com, Jakob Koschel <jakobkoschel@...il.com>, jniethe5@...il.com, Joe Lawrence <joe.lawrence@...hat.com>, Kees Cook <keescook@...omium.org>, kernel.noureddine@...il.com, kjain@...ux.ibm.com, ldufour@...ux.ibm.com, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>, maddy@...ux.ibm.com, mamatha4@...ux.vnet.ibm.com, Miroslav Benes <mbenes@...e.cz>, mikey@...ling.org, Michal Suchanek <msuchanek@...e.de>, nathanl@...ux.ibm.com, "Naveen N. Rao" <naveen.n.rao@...ux.vnet.ibm.com>, Nick Piggin <npiggin@...il.com>, oss@...error.net, Paul Menzel <pmenzel@...gen.mpg.de>, Petr Mladek <pmladek@...e.com>, psampat@...ux.ibm.com, Randy Dunlap <rdunlap@...radead.org>, Ritesh Harjani <riteshh@...ux.ibm.com>, rmclure@...ux.ibm.com, sachinp@...ux.ibm.com, sourabhjain@...ux.ibm.com, tobias@...dekranz.com, Thierry Reding <treding@...dia.com>, Bhaskar Chowdhury <unixbhaskar@...il.com>, Vaibhav Jain <vaibhav@...ux.ibm.com>, wangborong@...rlc.com, Wedson Almeida Filho <wedsonaf@...gle.com>, YueHaibing <yuehaibing@...wei.com> Subject: Re: [GIT PULL] Please pull powerpc/linux.git powerpc-5.18-1 tag Linus Torvalds <torvalds@...ux-foundation.org> writes: > On Fri, Mar 25, 2022 at 3:25 AM Michael Ellerman <mpe@...erman.id.au> wrote: >> >> Livepatch support for 32-bit is probably the standout new feature, otherwise mostly just >> lots of bits and pieces all over the board. > > Heh. I would have expected 32-bit ppc to be entirely legacy by now, so > it's a bit surprising to see that being a standout feature. We still get the odd bug report from people running mainline, or recent stable kernels, on 32-bit. And obviously Christophe has been doing lots of work on the Linux side, so in that sense 32-bit is alive and well. Having said that I don't think we'll see any new 32-bit CPU designs, so the clock is slowly ticking. > That said: > >> There's a series of commits cleaning up function descriptor handling, > > For some reason I also thought that powerpc had actually moved away > from function descriptors, so I'm clearly not keeping up with the > times. No you're right, we have moved away from them, but not entirely. Functions descriptors are still used for 64-bit big endian, but they're not used for 64-bit little endian, or 32-bit. cheers
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