From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8D25E3330D for ; Fri, 2 Jun 2023 19:11:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=AJABSmQfgLq8Q+2ppxsM6XF5q+Vq5qZe9N94edfIwwY=; b=PU4T7ADc0jcAq3KFGfGex3diK8 vuW6kxlnkjA4+MmRJvz0D0+wTteEYEdN0jEKVsMD/rWd4UKxTB9R75WweAYuX8LhbgcrsPvFit3yI lh7intlQyz7vxEAlTtCqyyD8JU13qOTD16vLtKcHmFSXi2Pyo9MrCSkaYoixNrt5uhFV6lzG4WxI4 2nLcE6+JFpQ/MhqrGMsVU/cbMmJGBLPLrkolWc5jANycOonOz9+oT0qGgaU6JjJZWKYWvYHTgqSEx acJK6R/uKBhblUAn+hhA5XEIMwsd+asra2KUYSEbBY8+7a7B+ca3G+EnF+XF7HS+DZKZBrmkC0kGI jbJBbSdQ==; Received: from j130084.upc-j.chello.nl ([24.132.130.84] helo=noisy.programming.kicks-ass.net) by casper.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1q5AAJ-009SqQ-JN; Fri, 02 Jun 2023 19:10:23 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id EB5333002F0; Fri, 2 Jun 2023 21:10:14 +0200 (CEST) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id B12CE20581278; Fri, 2 Jun 2023 21:10:14 +0200 (CEST) Date: Fri, 2 Jun 2023 21:10:14 +0200 From: Peter Zijlstra To: "H. Peter Anvin" Cc: Linus Torvalds , Helge Deller , Masahiro Yamada , Arnd Bergmann , Jonathan Corbet , Will Deacon , Boqun Feng , Mark Rutland , Catalin Marinas , dennis@kernel.org, Tejun Heo , Christoph Lameter , Heiko Carstens , gor@linux.ibm.com, Alexander Gordeev , borntraeger@linux.ibm.com, Sven Schnelle , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, Joerg Roedel , suravee.suthikulpanit@amd.com, Robin Murphy , David Woodhouse , Baolu Lu , Herbert Xu , "David S . Miller" , Pekka Enberg , David Rientjes , Joonsoo Kim , Andrew Morton , Vlastimil Babka , Roman Gushchin , Hyeonggon Yoo <42.hyeyoo@gmail.com>, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-s390@vger.kernel.org, iommu@lists.linux.dev, Linux-Arch , linux-crypto@vger.kernel.org, Stephen Rothwell , Michael Ellerman , "James E . J . Bottomley" , linux-parisc@vger.kernel.org, John David Anglin , Sam James Subject: Re: [PATCH v2 07/12] parisc/percpu: Work around the lack of __SIZEOF_INT128__ Message-ID: <20230602191014.GA695361@hirez.programming.kicks-ass.net> References: <20230531130833.635651916@infradead.org> <20230531132323.722039569@infradead.org> <70a69deb-7ad4-45b2-8e13-34955594a7ce@app.fastmail.com> <20230601101409.GS4253@hirez.programming.kicks-ass.net> <14c50e58-fecc-e96a-ee73-39ef4e4617c7@gmx.de> <20230602143912.GI620383@hirez.programming.kicks-ass.net> Precedence: bulk X-Mailing-List: iommu@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Fri, Jun 02, 2023 at 10:00:17AM -0700, H. Peter Anvin wrote: > Dumb question: is this only about the cpp macro or is it about __int128 existing at all? It's mostly about __int128 being there, __SIZEOF_INT128__ is just the way we go about detecting if it's there or not.