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From:   Linus Torvalds <torvalds@linux-foundation.org>
Date:   Fri, 2 Jun 2023 15:57:25 -0400
Message-ID: <CAHk-=wi4q=_+vQkOM0LRY7SfsH+D1-9DOSBABAzXrZwWxmJR+g@mail.gmail.com>
Subject: Re: [PATCH v2 07/12] parisc/percpu: Work around the lack of __SIZEOF_INT128__
To:     Peter Zijlstra <peterz@infradead.org>
Cc:     "H. Peter Anvin" <hpa@zytor.com>, Helge Deller <deller@gmx.de>,
        Masahiro Yamada <masahiroy@kernel.org>,
        Arnd Bergmann <arnd@arndb.de>,
        Jonathan Corbet <corbet@lwn.net>,
        Will Deacon <will@kernel.org>,
        Boqun Feng <boqun.feng@gmail.com>,
        Mark Rutland <mark.rutland@arm.com>,
        Catalin Marinas <catalin.marinas@arm.com>, dennis@kernel.org,
        Tejun Heo <tj@kernel.org>, Christoph Lameter <cl@linux.com>,
        Heiko Carstens <hca@linux.ibm.com>, gor@linux.ibm.com,
        Alexander Gordeev <agordeev@linux.ibm.com>,
        borntraeger@linux.ibm.com, Sven Schnelle <svens@linux.ibm.com>,
        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,
        Joerg Roedel <joro@8bytes.org>, suravee.suthikulpanit@amd.com,
        Robin Murphy <robin.murphy@arm.com>,
        David Woodhouse <dwmw2@infradead.org>,
        Baolu Lu <baolu.lu@linux.intel.com>,
        Herbert Xu <herbert@gondor.apana.org.au>,
        "David S . Miller" <davem@davemloft.net>,
        Pekka Enberg <penberg@kernel.org>,
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        Joonsoo Kim <iamjoonsoo.kim@lge.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Vlastimil Babka <vbabka@suse.cz>,
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        linux-crypto@vger.kernel.org,
        Stephen Rothwell <sfr@canb.auug.org.au>,
        Michael Ellerman <mpe@ellerman.id.au>,
        "James E . J . Bottomley" <James.Bottomley@hansenpartnership.com>,
        linux-parisc@vger.kernel.org,
        John David Anglin <dave.anglin@bell.net>,
        Sam James <sam@gentoo.org>
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On Fri, Jun 2, 2023 at 3:40=E2=80=AFPM Peter Zijlstra <peterz@infradead.org=
> wrote:
>
> "With 64bit builds depending on __SIZEOF_INT128__ to detect the
> presence of __int128 raise the parisc minimum compiler version to
> gcc-11.0.0."
>
> better?

I'd just say "64-bit targets need the __int128 type, which for pa-risc
means raising the minimum gcc version to 11".

The __SIZEOF_INT128__ part isn't the important part. That's just the sympto=
m.

               Linus