From patchwork Wed Dec 6 07:10:37 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?SsO8cmdlbiBHcm/Dnw==?= X-Patchwork-Id: 13481118 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 lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (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 E33DEC4167B for ; Wed, 6 Dec 2023 07:10:58 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.648917.1012993 (Exim 4.92) (envelope-from ) id 1rAm3W-0006Gl-AC; Wed, 06 Dec 2023 07:10:50 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 648917.1012993; Wed, 06 Dec 2023 07:10:50 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1rAm3W-0006Ge-7K; Wed, 06 Dec 2023 07:10:50 +0000 Received: by outflank-mailman (input) for mailman id 648917; Wed, 06 Dec 2023 07:10:49 +0000 Received: from se1-gles-sth1-in.inumbo.com ([159.253.27.254] helo=se1-gles-sth1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1rAm3V-0006G7-3z for xen-devel@lists.xenproject.org; Wed, 06 Dec 2023 07:10:49 +0000 Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.223.131]) by se1-gles-sth1.inumbo.com (Halon) with ESMTPS id 9489467a-9406-11ee-98e5-6d05b1d4d9a1; Wed, 06 Dec 2023 08:10:48 +0100 (CET) Received: from imap2.dmz-prg2.suse.org (imap2.dmz-prg2.suse.org [10.150.64.98]) (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) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id 894701FCFA; Wed, 6 Dec 2023 07:10:47 +0000 (UTC) Received: from imap2.dmz-prg2.suse.org (localhost [127.0.0.1]) (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) (No client certificate requested) by imap2.dmz-prg2.suse.org (Postfix) with ESMTPS id 5414A13403; Wed, 6 Dec 2023 07:10:47 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap2.dmz-prg2.suse.org with ESMTPSA id g5o3E3cecGW0DQAAn2gu4w (envelope-from ); Wed, 06 Dec 2023 07:10:47 +0000 X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 9489467a-9406-11ee-98e5-6d05b1d4d9a1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1701846647; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=hDGYrruK/gE8BhhPs/pNrBuUXXpG5jh9JFmDAumCt+g=; b=m51hq4xHjOStUdOlrveBOiBDqyvxQimVF7+n3Nu8OH1jt5A4LZeX2i/gDIhweTMkb2ZYL4 svgUW1qdVKsMDA5VQ+gSPFfRSeMpVmf0o8QQXWUs/k+h6Ox1tT97hbyaZX6zdn3AY3ZSME qunVfSCC1IMDnWAYFq7FxQ5W7pOqsp0= From: Juergen Gross To: xen-devel@lists.xenproject.org Cc: Juergen Gross , Stefano Stabellini , Julien Grall , Bertrand Marquis , Michal Orzel , Volodymyr Babchuk Subject: [PATCH v2 1/3] xen/arm: set -mno-unaligned-access compiler option for Arm32 Date: Wed, 6 Dec 2023 08:10:37 +0100 Message-Id: <20231206071039.24435-2-jgross@suse.com> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20231206071039.24435-1-jgross@suse.com> References: <20231206071039.24435-1-jgross@suse.com> MIME-Version: 1.0 Authentication-Results: smtp-out2.suse.de; none X-Spamd-Result: default: False [4.71 / 50.00]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; R_MISSING_CHARSET(2.50)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; MIME_GOOD(-0.10)[text/plain]; BROKEN_CONTENT_TYPE(1.50)[]; RCVD_COUNT_THREE(0.00)[3]; DKIM_SIGNED(0.00)[suse.com:s=susede1]; NEURAL_HAM_SHORT(-0.19)[-0.931]; RCPT_COUNT_SEVEN(0.00)[7]; MID_CONTAINS_FROM(1.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.com:email]; FUZZY_BLOCKED(0.00)[rspamd.com]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; RCVD_TLS_ALL(0.00)[] As the hypervisor is disabling unaligned accesses for Arm32, set the -mno-unaligned-access compiler option for building. This will prohibit unaligned accesses when e.g. accessing 2- or 4-byte data items in packed data structures. Signed-off-by: Juergen Gross Acked-by: Julien Grall --- V2: - new patch --- xen/arch/arm/arch.mk | 1 + 1 file changed, 1 insertion(+) diff --git a/xen/arch/arm/arch.mk b/xen/arch/arm/arch.mk index 58db76c4e1..022dcda192 100644 --- a/xen/arch/arm/arch.mk +++ b/xen/arch/arm/arch.mk @@ -7,6 +7,7 @@ $(call cc-option-add,CFLAGS,CC,-Wnested-externs) # Prevent floating-point variables from creeping into Xen. CFLAGS-$(CONFIG_ARM_32) += -msoft-float CFLAGS-$(CONFIG_ARM_32) += -mcpu=cortex-a15 +CFLAGS-$(CONFIG_ARM_32) += -mno-unaligned-access CFLAGS-$(CONFIG_ARM_64) += -mcpu=generic CFLAGS-$(CONFIG_ARM_64) += -mgeneral-regs-only # No fp registers etc