From owner-svn-src-head@freebsd.org Sun Aug 23 19:47:34 2020 Return-Path: Delivered-To: svn-src-head@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 C9AE63C6F71; Sun, 23 Aug 2020 19:47:34 +0000 (UTC) (envelope-from kib@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) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 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 4BZQl80tQpz4DbC; Sun, 23 Aug 2020 19:47:32 +0000 (UTC) (envelope-from kib@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 776D4C1FA; Sun, 23 Aug 2020 19:47:28 +0000 (UTC) (envelope-from kib@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id 07NJlSdt092842; Sun, 23 Aug 2020 19:47:28 GMT (envelope-from kib@FreeBSD.org) Received: (from kib@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id 07NJlS9u092840; Sun, 23 Aug 2020 19:47:28 GMT (envelope-from kib@FreeBSD.org) Message-Id: <202008231947.07NJlS9u092840@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: kib set sender to kib@FreeBSD.org using -f From: Konstantin Belousov Date: Sun, 23 Aug 2020 19:47:28 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r364517 - in head: sys/sys usr.bin/elfctl X-SVN-Group: head X-SVN-Commit-Author: kib X-SVN-Commit-Paths: in head: sys/sys usr.bin/elfctl X-SVN-Commit-Revision: 364517 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 23 Aug 2020 19:47:35 -0000 Author: kib Date: Sun Aug 23 19:47:27 2020 New Revision: 364517 URL: https://svnweb.freebsd.org/changeset/base/364517 Log: Reserve FreeBSD ELF feature control bit LA48 to control VA layout on amd64. Tested by: pho Sponsored by: The FreeBSD Foundation Differential revision: https://reviews.freebsd.org/D25273 Modified: head/sys/sys/elf_common.h head/usr.bin/elfctl/elfctl.c Modified: head/sys/sys/elf_common.h ============================================================================== --- head/sys/sys/elf_common.h Sun Aug 23 19:47:10 2020 (r364516) +++ head/sys/sys/elf_common.h Sun Aug 23 19:47:27 2020 (r364517) @@ -796,6 +796,7 @@ typedef struct { #define NT_FREEBSD_FCTL_PROTMAX_DISABLE 0x00000002 #define NT_FREEBSD_FCTL_STKGAP_DISABLE 0x00000004 #define NT_FREEBSD_FCTL_WXNEEDED 0x00000008 +#define NT_FREEBSD_FCTL_LA48 0x00000010 /* Values for n_type. Used in core files. */ #define NT_PRSTATUS 1 /* Process status. */ Modified: head/usr.bin/elfctl/elfctl.c ============================================================================== --- head/usr.bin/elfctl/elfctl.c Sun Aug 23 19:47:10 2020 (r364516) +++ head/usr.bin/elfctl/elfctl.c Sun Aug 23 19:47:27 2020 (r364517) @@ -67,6 +67,7 @@ static struct ControlFeatures featurelist[] = { "Disable implicit PROT_MAX" }, { "stackgap", NT_FREEBSD_FCTL_STKGAP_DISABLE, "Disable stack gap" }, { "wxneeded", NT_FREEBSD_FCTL_WXNEEDED, "Requires W+X mappings" }, + { "la48", NT_FREEBSD_FCTL_LA48, "amd64: Limit user VA to 48bit" }, }; static struct option long_opts[] = {