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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-Outflank-Mailman: Message body and most headers restored to incoming version 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 Content-Transfer-Encoding: quoted-printable Authentication-Results: smtp-out2.suse.de; none X-Spam-Level: **** X-Spam-Score: 4.71 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)[] X-Spam-Flag: NO X-ZohoMail-DKIM: pass (identity @suse.com) X-ZM-MESSAGEID: 1701846668516100001 Content-Type: text/plain; charset="utf-8" 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) +=3D -msoft-float CFLAGS-$(CONFIG_ARM_32) +=3D -mcpu=3Dcortex-a15 +CFLAGS-$(CONFIG_ARM_32) +=3D -mno-unaligned-access =20 CFLAGS-$(CONFIG_ARM_64) +=3D -mcpu=3Dgeneric CFLAGS-$(CONFIG_ARM_64) +=3D -mgeneral-regs-only # No fp registers etc --=20 2.35.3