From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by finch.gentoo.org (Postfix) with ESMTPS id D3887138359 for ; Sun, 23 Aug 2020 10:19:25 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id C9FB2E07A5; Sun, 23 Aug 2020 10:19:24 +0000 (UTC) Received: from smtp.gentoo.org (smtp.gentoo.org [140.211.166.183]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by pigeon.gentoo.org (Postfix) with ESMTPS id 8A329E07A5 for ; Sun, 23 Aug 2020 10:19:24 +0000 (UTC) Received: from oystercatcher.gentoo.org (oystercatcher.gentoo.org [148.251.78.52]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.gentoo.org (Postfix) with ESMTPS id 2B906340A9F for ; Sun, 23 Aug 2020 10:19:23 +0000 (UTC) Received: from localhost.localdomain (localhost [IPv6:::1]) by oystercatcher.gentoo.org (Postfix) with ESMTP id 8B67231C for ; Sun, 23 Aug 2020 10:19:21 +0000 (UTC) From: "Sergei Trofimovich" To: gentoo-commits@lists.gentoo.org Content-Transfer-Encoding: 8bit Content-type: text/plain; charset=UTF-8 Reply-To: gentoo-dev@lists.gentoo.org, "Sergei Trofimovich" Message-ID: <1598177956.3e3d3f661fa3df6911db31e7496951aa23497389.slyfox@gentoo> Subject: [gentoo-commits] repo/gentoo:master commit in: sys-libs/glibc/ X-VCS-Repository: repo/gentoo X-VCS-Files: sys-libs/glibc/glibc-2.31-r6.ebuild sys-libs/glibc/glibc-2.32.ebuild sys-libs/glibc/glibc-9999.ebuild X-VCS-Directories: sys-libs/glibc/ X-VCS-Committer: slyfox X-VCS-Committer-Name: Sergei Trofimovich X-VCS-Revision: 3e3d3f661fa3df6911db31e7496951aa23497389 X-VCS-Branch: master Date: Sun, 23 Aug 2020 10:19:21 +0000 (UTC) Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-commits@lists.gentoo.org X-Auto-Response-Suppress: DR, RN, NRN, OOF, AutoReply X-Archives-Salt: 85a810a8-fb69-43ac-abe3-dd606ca2a512 X-Archives-Hash: a3e87a65007501671fa631c8b1f763ab commit: 3e3d3f661fa3df6911db31e7496951aa23497389 Author: Sergei Trofimovich gentoo org> AuthorDate: Sun Aug 23 10:19:03 2020 +0000 Commit: Sergei Trofimovich gentoo org> CommitDate: Sun Aug 23 10:19:16 2020 +0000 URL: https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=3e3d3f66 sys-libs/glibc: disable multiarch on ppc32 By default glibc does not enable multiarch on powerpc-unknown-linux-gnu targets. Bug triggers only when CFLAGS= enables power4 or above (like, CFLAGS=-mcpu=7450). multiarch does not work on ppc with cache-block not equal to 128 bytes and breaks memset implementations. There 'dcbz' instruction is used for optimization to zero out cache-block with zeros at a time. memset implementation assumes cache-block=128. G4 hardware and qemu-ppc both have cache-block=32. This means memset() zero-initializes only 32 of each 128-byte block including .sbss and .bss sections. This breaks glibc's locks and many other things. The change disables multiarch for pps32 in Gentoo until glibc is fixed upstream. Reported-by: Daniel Gurney Bug: https://sourceware.org/PR26522 Closes:https://bugs.gentoo.org/737996 Package-Manager: Portage-3.0.4, Repoman-3.0.1 Signed-off-by: Sergei Trofimovich gentoo.org> sys-libs/glibc/glibc-2.31-r6.ebuild | 5 +++++ sys-libs/glibc/glibc-2.32.ebuild | 5 +++++ sys-libs/glibc/glibc-9999.ebuild | 5 +++++ 3 files changed, 15 insertions(+) diff --git a/sys-libs/glibc/glibc-2.31-r6.ebuild b/sys-libs/glibc/glibc-2.31-r6.ebuild index c010b578953..73a26abf452 100644 --- a/sys-libs/glibc/glibc-2.31-r6.ebuild +++ b/sys-libs/glibc/glibc-2.31-r6.ebuild @@ -420,6 +420,11 @@ want__thread() { use_multiarch() { # Allow user to disable runtime arch detection in multilib. use multiarch || return 1 + # multiarch does not work on ppc with cache-block not equal to 128 bytes + # and breaks memset: + # https://sourceware.org/PR26522 + # https://bugs.gentoo.org/737996 + [[ $(tc-arch ${CTARGET}) == ppc ]] && return 1 # Make sure binutils is new enough to support indirect functions, # #336792. This funky sed supports gold and bfd linkers. local bver nver diff --git a/sys-libs/glibc/glibc-2.32.ebuild b/sys-libs/glibc/glibc-2.32.ebuild index 2a750041ae4..a53946fa562 100644 --- a/sys-libs/glibc/glibc-2.32.ebuild +++ b/sys-libs/glibc/glibc-2.32.ebuild @@ -420,6 +420,11 @@ want__thread() { use_multiarch() { # Allow user to disable runtime arch detection in multilib. use multiarch || return 1 + # multiarch does not work on ppc with cache-block not equal to 128 bytes + # and breaks memset: + # https://sourceware.org/PR26522 + # https://bugs.gentoo.org/737996 + [[ $(tc-arch ${CTARGET}) == ppc ]] && return 1 # Make sure binutils is new enough to support indirect functions, # #336792. This funky sed supports gold and bfd linkers. local bver nver diff --git a/sys-libs/glibc/glibc-9999.ebuild b/sys-libs/glibc/glibc-9999.ebuild index ef9ad2c0051..8430fbb242d 100644 --- a/sys-libs/glibc/glibc-9999.ebuild +++ b/sys-libs/glibc/glibc-9999.ebuild @@ -421,6 +421,11 @@ want__thread() { use_multiarch() { # Allow user to disable runtime arch detection in multilib. use multiarch || return 1 + # multiarch does not work on ppc with cache-block not equal to 128 bytes + # and breaks memset: + # https://sourceware.org/PR26522 + # https://bugs.gentoo.org/737996 + [[ $(tc-arch ${CTARGET}) == ppc ]] && return 1 # Make sure binutils is new enough to support indirect functions, # #336792. This funky sed supports gold and bfd linkers. local bver nver