From owner-svn-src-all@freebsd.org Mon Dec 16 23:55:31 2019 Return-Path: Delivered-To: svn-src-all@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 5AB721D1C23; Mon, 16 Dec 2019 23:55:31 +0000 (UTC) (envelope-from pfg@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 47cJ771bmvz4TH0; Mon, 16 Dec 2019 23:55:31 +0000 (UTC) (envelope-from pfg@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 2DAED535A; Mon, 16 Dec 2019 23:55:31 +0000 (UTC) (envelope-from pfg@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id xBGNtUSF078841; Mon, 16 Dec 2019 23:55:30 GMT (envelope-from pfg@FreeBSD.org) Received: (from pfg@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id xBGNtUq6078840; Mon, 16 Dec 2019 23:55:30 GMT (envelope-from pfg@FreeBSD.org) Message-Id: <201912162355.xBGNtUq6078840@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: pfg set sender to pfg@FreeBSD.org using -f From: "Pedro F. Giffuni" Date: Mon, 16 Dec 2019 23:55:30 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r355828 - head/sys/sys X-SVN-Group: head X-SVN-Commit-Author: pfg X-SVN-Commit-Paths: head/sys/sys X-SVN-Commit-Revision: 355828 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 16 Dec 2019 23:55:31 -0000 Author: pfg Date: Mon Dec 16 23:55:30 2019 New Revision: 355828 URL: https://svnweb.freebsd.org/changeset/base/355828 Log: Double the size of ARG_MAX on LP64 platforms. As modern software keeps growing in size, we get requests to update the value of ARG_MAX in order to link the resulting object files. Other OSs have much higher values but Increasiong ARG_MAX has a multiplied effect on KVA, so just bumping this value is dangerous in some archs like ARM32 that can exhaust KVA rather easily. While it would be better to have a unique value for all archs, other OSs (Illumos in partidular) can have different ARG_MAX limits depending on the platform, For now we want to be really conservative so we are avoidng the change on ILP32 and in the alternative case we only double it since that seems to work well enough for recent Code Aster. I was planning to bump the _FreeBSD_version but it was bumped recently (r355798) so we can reuse the 1300068 value for this change. PR: 241710 MFC after: 5 days Modified: head/sys/sys/syslimits.h Modified: head/sys/sys/syslimits.h ============================================================================== --- head/sys/sys/syslimits.h Mon Dec 16 23:08:09 2019 (r355827) +++ head/sys/sys/syslimits.h Mon Dec 16 23:55:30 2019 (r355828) @@ -48,7 +48,11 @@ * Do not add any new variables here. (See the comment at the end of * the file for why.) */ -#define ARG_MAX 262144 /* max bytes for an exec function */ +#ifndef __ILP32__ +#define ARG_MAX (2 * 256 * 1024) /* max bytes for an exec function */ +#else +#define ARG_MAX (256 * 1024) /* max bytes for KVA-starved archs */ +#endif #ifndef CHILD_MAX #define CHILD_MAX 40 /* max simultaneous processes */ #endif