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Mon, 11 Dec 2023 13:16:24 +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 n1BaHKgLd2XEUgAAn2gu4w (envelope-from ); Mon, 11 Dec 2023 13:16:24 +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: 7c2cf8f7-9827-11ee-9b0f-b553b5be7939 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1702300584; 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=SgbXdYtzORxNSYsY9wikbAOanF5hYSOrLFRs1h5WPMc=; b=FqUpU3knHx6djprnV03piggikbpTI4HAh19/UxmXoSnlaDyy3pj/V0UVX3ivmL/VdAbfhG hYX0Q7omJZlRAd1mVDHmP0EUMamtCZ1TPcZxXZPBEddv2a+u4M/UmS+tME/AEI9dHt8J1M y2zoG9ak7Nygr0Pr9lcS/43z6TlSHwk= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1702300584; 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=SgbXdYtzORxNSYsY9wikbAOanF5hYSOrLFRs1h5WPMc=; b=FqUpU3knHx6djprnV03piggikbpTI4HAh19/UxmXoSnlaDyy3pj/V0UVX3ivmL/VdAbfhG hYX0Q7omJZlRAd1mVDHmP0EUMamtCZ1TPcZxXZPBEddv2a+u4M/UmS+tME/AEI9dHt8J1M y2zoG9ak7Nygr0Pr9lcS/43z6TlSHwk= From: Juergen Gross To: xen-devel@lists.xenproject.org Cc: Juergen Gross , Stefano Stabellini , Julien Grall , Bertrand Marquis , Michal Orzel , Volodymyr Babchuk , Julien Grall Subject: [PATCH v3 1/3] xen/arm: set -mno-unaligned-access compiler option for Arm32 Date: Mon, 11 Dec 2023 14:16:14 +0100 Message-Id: <20231211131616.1839-2-jgross@suse.com> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20231211131616.1839-1-jgross@suse.com> References: <20231211131616.1839-1-jgross@suse.com> MIME-Version: 1.0 Authentication-Results: smtp-out2.suse.de; none X-Spamd-Result: default: False [-0.30 / 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]; REPLY(-4.00)[]; BROKEN_CONTENT_TYPE(1.50)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; RCVD_COUNT_THREE(0.00)[3]; DKIM_SIGNED(0.00)[suse.com:s=susede1]; NEURAL_HAM_SHORT(-0.20)[-1.000]; RCPT_COUNT_SEVEN(0.00)[8]; 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. Backport: 4.15+ 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