Messages in this thread | | | Subject | Re: [PATCH 0/2] powerpc: Remove support for ppc405/440 Xilinx platforms | From | Christophe Leroy <> | Date | Wed, 25 Nov 2020 07:36:49 +0100 |
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Le 21/05/2020 à 12:38, Christophe Leroy a écrit : > > > Le 21/05/2020 à 09:02, Michael Ellerman a écrit : >> Arnd Bergmann <arnd@arndb.de> writes: >>> +On Wed, Apr 8, 2020 at 2:04 PM Michael Ellerman <mpe@ellerman.id.au> wrote: >>>> Benjamin Herrenschmidt <benh@kernel.crashing.org> writes: >>>>> On Fri, 2020-04-03 at 15:59 +1100, Michael Ellerman wrote: >>>>>> Benjamin Herrenschmidt <benh@kernel.crashing.org> writes: >>>>> IBM still put 40x cores inside POWER chips no ? >>>> >>>> Oh yeah that's true. I guess most folks don't know that, or that they >>>> run RHEL on them. >>> >>> Is there a reason for not having those dts files in mainline then? >>> If nothing else, it would document what machines are still being >>> used with future kernels. >> >> Sorry that part was a joke :D Those chips don't run Linux. >> > > Nice to know :) > > What's the plan then, do we still want to keep 40x in the kernel ? > > If yes, is it ok to drop the oldies anyway as done in my series > https://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=172630 ? > > (Note that this series will conflict with my series on hugepages on 8xx due to the > PTE_ATOMIC_UPDATES stuff. I can rebase the 40x modernisation series on top of the 8xx hugepages > series if it is worth it) >
Do we still want to keep 40x in the kernel ? We don't even have a running 40x QEMU machine as far as I know.
I'm asking because I'd like to drop the non CONFIG_VMAP_STACK code to simplify and ease stuff (code that works with vmalloc'ed stacks also works with stacks in linear memory), but I can't do it because 40x doesn't have VMAP_STACK and should I implement it for 40x, I have to means to test it.
So it would ease things if we could drop 40x completely, unless someone there has a 40x platform to test stuff.
Thanks Christophe
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