linux-kernel - Re: [PATCH v6 15/19] arm64: ilp32: force IPC

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Message-ID: <4066882.1lnX6EA7g3@wuerfel>
Date:	Wed, 18 Nov 2015 13:04:02 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Andy Lutomirski <luto@...capital.net>
Cc:	Andreas Schwab <schwab@...e.de>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Yury Norov <ynorov@...iumnetworks.com>,
	Catalin Marinas <catalin.marinas@....com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	pinskia@...il.com, Prasun.Kapoor@...iumnetworks.com,
	Nathan Lynch <Nathan_Lynch@...tor.com>,
	Alexander Graf <agraf@...e.de>, klimov.linux@...il.com,
	Mark Brown <broonie@...nel.org>, jan.dakinevich@...il.com,
	David Daney <ddaney.cavm@...il.com>,
	bamvor.zhangjian@...wei.com, philipp.tomsich@...obroma-systems.com,
	andrey.konovalov@...aro.org,
	"Joseph S. Myers" <joseph@...esourcery.com>,
	christoph.muellner@...obroma-systems.com
Subject: Re: [PATCH v6 15/19] arm64: ilp32: force IPC_64 in msgctl, shmctl, semctl

On Wednesday 18 November 2015 11:07:26 Geert Uytterhoeven wrote:
> >
> > I've done a complete list of what the architectures (see
> > https://docs.google.com/spreadsheets/d/18GxXEHE2ywnSr-SPoGFd1ABz6wEM1ex-JMu5lEraaH8/ )
> >
> > We have these categories:
> >
> > 1. uses IPC_PARSE_VERSION with sys_ipc, and has just introduced
> >    separate syscalls:
> >
> >     arm, avr32, powerpc, x86-32
> 
> x86-32, where?

My mistake. x86 uses a different way to do this, so I didn't see it
using grep and just assumed that Andy Lutomirski had patched it already
based on my memory of

https://sourceware.org/ml/libc-alpha/2015-09/msg00323.html

> > 2. uses IPC_PARSE_VERSION with sys_ipc, and has not yet introduced
> >    separate syscalls (currently producing a compile warning):
> >
> >    cris, frv, m32r, m68k, mips (o32), mn10300, s390, sh32, sparc
> >
> > 3. uses IPC_PARSE_VERSION with separate syscalls:
> >
> >    alpha, blackfin, microblaze, mips (n32/64), xtensa
> >
> > 4a. only new-style IPC with separate syscalls:
> >
> >     ia64, parisc, sh64
> 
> and x86-64?

right, that too. I got it in my spreadsheet by copied it wrong.

> > 4b. only new-style IPC with separate syscalls, using generic syscall
> >     table:
> >
> >     arc, arm64, c6x, h8300, hexagon, metag, nios2, openrisc, score,
> >     tile, unicore32
> >
> > So we should probably fix 1. and 2. before it's too late, but make
> > sure we don't break 3. in the process.
> 
> (Fortunately?) x86-32 doesn't seem to be converted in next yet?
> 
> I was hoping for them to do the heavy lifting for the generic solution 

yes, that would be nice ;-)

	Arnd
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