Message-ID: <6a420bb0e033562bc7f67cc8f218f994e0892d3b.camel@physik.fu-berlin.de>
Subject: Re: [PATCH v3 10/24] sparc: Remove COMMAND_LINE_SIZE from uapi
From:   John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
To:     WANG Xuerui <kernel@xen0n.name>,
        Sergey Shtylyov <s.shtylyov@omp.ru>,
        Alexandre Ghiti <alexghiti@rivosinc.com>,
        Jonathan Corbet <corbet@lwn.net>,
        Richard Henderson <richard.henderson@linaro.org>,
        Ivan Kokshaysky <ink@jurassic.park.msu.ru>,
        Matt Turner <mattst88@gmail.com>,
        Vineet Gupta <vgupta@kernel.org>,
        Russell King <linux@armlinux.org.uk>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Will Deacon <will@kernel.org>,
        Huacai Chen <chenhuacai@kernel.org>,
        Geert Uytterhoeven <geert@linux-m68k.org>,
        Michal Simek <monstr@monstr.eu>,
        Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
        "James E . J . Bottomley" <James.Bottomley@HansenPartnership.com>,
        Helge Deller <deller@gmx.de>,
        Michael Ellerman <mpe@ellerman.id.au>,
        Nicholas Piggin <npiggin@gmail.com>,
        Christophe Leroy <christophe.leroy@csgroup.eu>,
        Paul Walmsley <paul.walmsley@sifive.com>,
        Palmer Dabbelt <palmer@dabbelt.com>,
        Albert Ou <aou@eecs.berkeley.edu>,
        Heiko Carstens <hca@linux.ibm.com>,
        Vasily Gorbik <gor@linux.ibm.com>,
        Alexander Gordeev <agordeev@linux.ibm.com>,
        Christian Borntraeger <borntraeger@linux.ibm.com>,
        Sven Schnelle <svens@linux.ibm.com>,
        Yoshinori Sato <ysato@users.sourceforge.jp>,
        Rich Felker <dalias@libc.org>,
        "David S . Miller" <davem@davemloft.net>,
        Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
        Dave Hansen <dave.hansen@linux.intel.com>, x86@kernel.org,
        "H . Peter Anvin" <hpa@zytor.com>, Chris Zankel <chris@zankel.net>,
        Max Filippov <jcmvbkbc@gmail.com>,
        Arnd Bergmann <arnd@arndb.de>, linux-doc@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-alpha@vger.kernel.org,
        linux-snps-arc@lists.infradead.org,
        linux-arm-kernel@lists.infradead.org, linux-ia64@vger.kernel.org,
        loongarch@lists.linux.dev, linux-m68k@lists.linux-m68k.org,
        linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org,
        linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org,
        linux-s390@vger.kernel.org, linux-sh@vger.kernel.org,
        sparclinux@vger.kernel.org, linux-xtensa@linux-xtensa.org,
        linux-arch@vger.kernel.org
Cc:     Palmer Dabbelt <palmer@rivosinc.com>
Date:   Tue, 14 Feb 2023 11:38:45 +0100
In-Reply-To: <f3db61bb-5c89-2724-769f-9d606f587f92@xen0n.name>
References: <20230214074925.228106-1-alexghiti@rivosinc.com>
         <20230214074925.228106-11-alexghiti@rivosinc.com>
         <017f0b40-8021-8b3b-24d2-c70661b6b292@omp.ru>
         <f3db61bb-5c89-2724-769f-9d606f587f92@xen0n.name>
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On Tue, 2023-02-14 at 16:59 +0800, WANG Xuerui wrote:
> On 2023/2/14 16:50, Sergey Shtylyov wrote:
> > On 2/14/23 10:49 AM, Alexandre Ghiti wrote:
> > 
> > > From: Palmer Dabbelt <palmer@rivosinc.com>
> > > 
> > > As far as I can tell this is not used by userspace and thus should not
> > > be part of the user-visible API.
> > > 
> > > Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
> > > ---
> > >   arch/sparc/include/asm/setup.h      | 6 +++++-
> > >   arch/sparc/include/uapi/asm/setup.h | 7 -------
> > >   2 files changed, 5 insertions(+), 8 deletions(-)
> > > 
> > > diff --git a/arch/sparc/include/asm/setup.h b/arch/sparc/include/asm/setup.h
> > > index 72205684e51e..d1384ed92547 100644
> > > --- a/arch/sparc/include/asm/setup.h
> > > +++ b/arch/sparc/include/asm/setup.h
> > > @@ -7,7 +7,11 @@
> > >   
> > >   #include <linux/interrupt.h>
> > >   
> > > -#include <uapi/asm/setup.h>
> > > +#if defined(__sparc__) && defined(__arch64__)
> > 
> >     Mhm, I don't think these two can be #define'd simulaneously...
> 
> I believe it's just a SPARC-ism [1] [2] that may look strange and be 
> easily confused for __aarch64__ (notice the extra 'a')...

Yep, that's correct. On 64-bit Linux/SPARC, gcc/clang define __sparc__ AND __arch64__.

Adrian

-- 
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: :' :  Debian Developer
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