From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 646EBC61DD6 for ; Thu, 3 Sep 2026 02:22:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=kVN/t+XSNYs/CadwXWQbUuePw0/c921JxlXaR/ty2BA=; b=S041Z9RcHYgaKbubIWWtWM8Xbg koeBiomPyOIBW5WRE0haaq2pePUCeNvcDjfMjk3Xc8BaceW3yPpDA93TACeCoDBqLsqbbOQXTc1Dg OB/6R1nMdfhTisN8WOiJ0gMg6R0BxFbpuYP2nQHc7BtPPSt/p5H+SW+hfMd1xX6A01LJUBQHolabh Yso33UGp4Z/AM4rpsgy6H2oWuVVUyciYVzDp0wWH9t5AGRhi1rhhBXzOe1N9vm310yLAwnYAmRAYx /DJUDesZhTI7yqNLtdmS1SrCHp9xz1n4q6NqFmZB7TS+PRbwP40zpasEX2TNeJCaJ/MsJURkQMgmm TZ6c4tXw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1x1x5J-0000000GCaT-05JB; Thu, 03 Sep 2026 02:21:49 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1x1x5G-0000000GCZS-1B42 for linux-arm-kernel@lists.infradead.org; Thu, 03 Sep 2026 02:21:48 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 574131682; Wed, 2 Sep 2026 19:21:38 -0700 (PDT) Received: from [192.168.20.93] (usa-sjc-mx-foss1.foss.arm.com [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 4668E3F7D8; Wed, 2 Sep 2026 19:21:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1788402102; bh=FiSTVRTvLii3uBnQ9AyVG9QwTLdsozK2xfhFwWzvOvI=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=LkNTOb+RbqNHZjP+X+7uXUJ+qS/6Yb4OpkLD8uq20t7hu/Sml7oMppqyqVkWQoG5t pEKhP0LUA4FL+fJh+feRl/RF81t08kV/rCP9RV4/KghW2Qw5tDSYr3NgadQbv8eLc+ JDPR8KzvsCx6yYFh6WVjzN5RUf5YnMNe2FP0xjyw= Message-ID: Date: Wed, 2 Sep 2026 21:21:32 -0500 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 0/2] Use __u128 in arm64 UAPI headers To: Will Deacon , linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org, Arnd Bergmann , Arnaldo Carvalho de Melo , Nick Desaulniers , David Matlack , Steffen Eiden , Andreas Grapentin , Catalin Marinas , Dave Martin , Mark Rutland , Marc Zyngier References: <20260626141730.5976-1-will@kernel.org> Content-Language: en-US From: Jeremy Linton In-Reply-To: <20260626141730.5976-1-will@kernel.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260902_192146_448698_25A90E99 X-CRM114-Status: GOOD ( 18.54 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi, On 6/26/26 9:17 AM, Will Deacon wrote: > Hi folks, > > This is version two of the patch I previously sent here: > > https://lore.kernel.org/r/20260619130835.5678-1-will@kernel.org > > I even briefly queued that version up, but it exploded spectacularly > when building the kselftests for arm64 [1] [2]. So the only change since > v1 is the addition of a preliminary patch that adds the '__u128' typedef > to the private copy of linux/types.h used by the tools/ directory. > > I plan to take this all via the arm64 tree unless anybody objects. This seems to be creating a interesting situation that the follow-on commit: 10a47fb67340 tools: linux/types.h: Add 128-bit integer types for arm64 UAPI structures Is missing from older kernel tooling/etc, which means the tools that end up pulling this header in won't build on machines running 7.3 kernel headers. AKA, build/install master, switch back to an older branch and discover say bpftool won't build anymore. Thanks, > > Cheers, > > Will > > [1] https://lore.kernel.org/r/202606240441.7eZ1TIRM-lkp@intel.com > [2] https://lore.kernel.org/r/ajvGS7UBpWzJtzkw@sirena.org.uk > > Cc: Arnd Bergmann > Cc: Arnaldo Carvalho de Melo > Cc: Nick Desaulniers > Cc: David Matlack > Cc: Steffen Eiden > Cc: Andreas Grapentin > Cc: Catalin Marinas > Cc: Dave Martin > Cc: Mark Rutland > Cc: Marc Zyngier > > --->8 > > Will Deacon (2): > tools: linux/types.h: Add 128-bit integer types for arm64 UAPI > structures > arm64: uapi: Use __u128 instead of __uint128_t in UAPI headers > > arch/arm64/include/uapi/asm/ptrace.h | 12 ++++++------ > arch/arm64/include/uapi/asm/sigcontext.h | 6 +++--- > tools/include/linux/types.h | 5 +++++ > 3 files changed, 14 insertions(+), 9 deletions(-) >