From patchwork Sun Nov 16 00:33:31 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Samuel Thibault X-Patchwork-Id: 124422 Return-Path: X-Original-To: patchwork@sourceware.org Delivered-To: patchwork@sourceware.org Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id DCF873858D26 for ; Sun, 16 Nov 2025 00:34:22 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org DCF873858D26 X-Original-To: libc-alpha@sourceware.org Delivered-To: libc-alpha@sourceware.org Received: from sonata.ens-lyon.org (domu-toccata.ens-lyon.fr [140.77.166.138]) by sourceware.org (Postfix) with ESMTPS id 956573858C52 for ; Sun, 16 Nov 2025 00:33:33 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 956573858C52 Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=ens-lyon.org Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=bounce.ens-lyon.org ARC-Filter: OpenARC Filter v1.0.0 sourceware.org 956573858C52 Authentication-Results: server2.sourceware.org; arc=none smtp.remote-ip=140.77.166.138 ARC-Seal: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1763253213; cv=none; b=PR5CQ74jktCF4cV8/bBOBpqLwv9Req+66GQirVlw0YIaD07z2/QGGdEyfo4GxJIEvoxP/OJYUtPus2jNUpCjJWIBaQoUqbaYsx5V5e6pF+zP8Pjv4TxDK/OnNiZWxKgjDnXOubF80ycoucvEG19ch6mOFaqPHM9H7UdWX0SOs0A= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1763253213; c=relaxed/simple; bh=MP1Hi6lechFfxmWdQnqdk0K5pY6BqyOqVkE4srq3Y1c=; h=From:To:Subject:Date:Message-ID:MIME-Version; b=muKgRr2o+oP05FOoMQpP7FhVo/hUTEb8TF08ZBaqGPJ8GC8nRU74QlYAvJTk2RLigdu4yjuSyTPxxXdzHTQ0Lyp9g8Tx7ULCuo3z0UgchpBrWPMx4FbHSmRS4a06re1JD0/egzpUTeJeKH54NIzco48aHH5eUM5VmWRiYwppZic= ARC-Authentication-Results: i=1; server2.sourceware.org DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 956573858C52 Received: from localhost (localhost [127.0.0.1]) by sonata.ens-lyon.org (Postfix) with ESMTP id 2BFE2A0387; Sun, 16 Nov 2025 01:33:32 +0100 (CET) Received: from sonata.ens-lyon.org ([127.0.0.1]) by localhost (sonata.ens-lyon.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id RqtWSKF_G9qF; Sun, 16 Nov 2025 01:33:32 +0100 (CET) Received: from end (aamiens-653-1-40-48.w83-192.abo.wanadoo.fr [83.192.199.48]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by sonata.ens-lyon.org (Postfix) with ESMTPSA id 04515A033F; Sun, 16 Nov 2025 01:33:32 +0100 (CET) Received: from samy by end with local (Exim 4.98.2) (envelope-from ) id 1vKQhv-00000008SVc-1wmA; Sun, 16 Nov 2025 01:33:31 +0100 From: Samuel Thibault To: libc-alpha@sourceware.org Cc: Samuel Thibault , commit-hurd@gnu.org Subject: [hurd,commited] hurd: Fix restoring SSE state on signal Date: Sun, 16 Nov 2025 01:33:31 +0100 Message-ID: <20251116003331.2016205-1-samuel.thibault@ens-lyon.org> X-Mailer: git-send-email 2.51.0 MIME-Version: 1.0 X-Spam-Status: No, score=-13.0 required=5.0 tests=BAYES_00, GIT_PATCH_0, JMQ_SPF_NEUTRAL, KAM_DMARC_STATUS, RCVD_IN_VALIDITY_RPBL_BLOCKED, RCVD_IN_VALIDITY_SAFE_BLOCKED, SPF_HELO_PASS, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: libc-alpha-bounces~patchwork=sourceware.org@sourceware.org mach_port_mod_refs() needs to avoid using SSE&MMX for __sigreturn2 to be able to use it without thrashing SSE&MMX. --- sysdeps/mach/hurd/x86/Makefile | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/sysdeps/mach/hurd/x86/Makefile b/sysdeps/mach/hurd/x86/Makefile index 29371f6c9a..27c4b06590 100644 --- a/sysdeps/mach/hurd/x86/Makefile +++ b/sysdeps/mach/hurd/x86/Makefile @@ -14,3 +14,8 @@ endif ifeq ($(subdir),stdlib) gen-as-const-headers += ucontext_i.sym endif + +ifeq ($(subdir),mach) +# Avoid SSE&MMX to avoid __sigreturn2 thrashing it +CFLAGS-RPC_mach_port_mod_refs.c = -mno-sse -mno-mmx +endif