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From: Michael Ellerman <mpe@ellerman.id.au>
To: "Michal Suchánek" <msuchanek@suse.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
	wangborong@cdjrlc.com, Bhaskar Chowdhury <unixbhaskar@gmail.com>,
	Wedson Almeida Filho <wedsonaf@google.com>,
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	Joe Lawrence <joe.lawrence@redhat.com>,
	Anders Roxell <anders.roxell@linaro.org>,
	"Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>,
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	Thierry Reding <treding@nvidia.com>,
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	farosas@linux.ibm.com, Geoff Levand <geoff@infradead.org>,
	Randy Dunlap <rdunlap@infradead.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	sourabhjain@linux.ibm.com, Julia Lawall <Julia.Lawall@inria.fr>,
	Ritesh Harjani <riteshh@linux.ibm.com>,
	cgel.zte@gmail.com, Vaibhav Jain <vaibhav@linux.ibm.com>,
	linuxppc-dev <linuxppc-dev@lists.ozlabs.org>,
	tobias@waldekranz.com
Subject: Re: [GIT PULL] Please pull powerpc/linux.git powerpc-5.18-1 tag
Date: Thu, 31 Mar 2022 00:21:03 +1100	[thread overview]
Message-ID: <87k0cbfuf4.fsf@mpe.ellerman.id.au> (raw)
In-Reply-To: <20220330112733.GG163591@kunlun.suse.cz>

Michal Suchánek <msuchanek@suse.de> writes:
> On Mon, Mar 28, 2022 at 08:07:13PM +1100, Michael Ellerman wrote:
>> Linus Torvalds <torvalds@linux-foundation.org> writes:
>> > On Fri, Mar 25, 2022 at 3:25 AM Michael Ellerman <mpe@ellerman.id.au> wrote:
>> 
>> > 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.
>
> There was a patch to use ABIv2 for ppc64 big endian. I suppose that
> would rid usof the gunction descriptors for good.

It would be nice.

The hesitation in the past was that the GNU toolchain developers don't
officially support BE+ELFv2, though it is in use so it does work.

> Maybe it's worth resurrecting?

Yeah maybe we should think about it again. If it builds with clang/lld
that would be a real plus.

cheers

  reply	other threads:[~2022-03-30 13:21 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-03-25 10:25 [GIT PULL] Please pull powerpc/linux.git powerpc-5.18-1 tag Michael Ellerman
2022-03-25 16:49 ` Linus Torvalds
2022-03-28  9:07   ` Michael Ellerman
2022-03-30 11:27     ` Michal Suchánek
2022-03-30 13:21       ` Michael Ellerman [this message]
2022-03-30 13:44         ` Arnd Bergmann
2022-03-30 17:07         ` Segher Boessenkool

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