From patchwork Mon Oct 2 07:49:45 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicola Vetrini X-Patchwork-Id: 13405620 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 ECF99E784A5 for ; Mon, 2 Oct 2023 07:50:17 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.611143.950573 (Exim 4.92) (envelope-from ) id 1qnDgr-0006kB-GZ; Mon, 02 Oct 2023 07:50:05 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 611143.950573; Mon, 02 Oct 2023 07:50:05 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1qnDgr-0006jo-DL; Mon, 02 Oct 2023 07:50:05 +0000 Received: by outflank-mailman (input) for mailman id 611143; Mon, 02 Oct 2023 07:50:04 +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 1qnDgq-00065N-2r for xen-devel@lists.xenproject.org; Mon, 02 Oct 2023 07:50:04 +0000 Received: from support.bugseng.com (mail.bugseng.com [162.55.131.47]) by se1-gles-sth1.inumbo.com (Halon) with ESMTPS id 4bc71713-60f8-11ee-878e-cb3800f73035; Mon, 02 Oct 2023 09:50:03 +0200 (CEST) Received: from nico.bugseng.com (unknown [147.123.100.131]) by support.bugseng.com (Postfix) with ESMTPSA id BF3B84EE074E; Mon, 2 Oct 2023 09:50:02 +0200 (CEST) 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: 4bc71713-60f8-11ee-878e-cb3800f73035 From: Nicola Vetrini To: xen-devel@lists.xenproject.org Cc: sstabellini@kernel.org, michal.orzel@amd.com, xenia.ragiadakou@amd.com, ayan.kumar.halder@amd.com, consulting@bugseng.com, jbeulich@suse.com, andrew.cooper3@citrix.com, roger.pau@citrix.com, Henry.Wang@arm.com, Nicola Vetrini , Wei Liu Subject: [XEN PATCH 2/7] x86: add deviations for variables only used in asm code Date: Mon, 2 Oct 2023 09:49:45 +0200 Message-Id: X-Mailer: git-send-email 2.34.1 In-Reply-To: References: MIME-Version: 1.0 These variables are only used by asm code, and therefore the lack of a declaration is justified by the corresponding SAF comment. Signed-off-by: Nicola Vetrini Reviewed-by: Stefano Stabellini --- xen/arch/x86/include/asm/asm_defns.h | 1 + xen/arch/x86/setup.c | 1 + 2 files changed, 2 insertions(+) diff --git a/xen/arch/x86/include/asm/asm_defns.h b/xen/arch/x86/include/asm/asm_defns.h index baaaccb26e17..a2516de7749b 100644 --- a/xen/arch/x86/include/asm/asm_defns.h +++ b/xen/arch/x86/include/asm/asm_defns.h @@ -31,6 +31,7 @@ asm ( "\t.equ CONFIG_INDIRECT_THUNK, " * gets set up by the containing function. */ #ifdef CONFIG_FRAME_POINTER +/* SAF-1-safe */ register unsigned long current_stack_pointer asm("rsp"); # define ASM_CALL_CONSTRAINT , "+r" (current_stack_pointer) #else diff --git a/xen/arch/x86/setup.c b/xen/arch/x86/setup.c index 08ba1f95d635..7e2979f419af 100644 --- a/xen/arch/x86/setup.c +++ b/xen/arch/x86/setup.c @@ -153,6 +153,7 @@ char __section(".init.bss.stack_aligned") __aligned(STACK_SIZE) void *stack_start = cpu0_stack + STACK_SIZE - sizeof(struct cpu_info); /* Used by the boot asm to stash the relocated multiboot info pointer. */ +/* SAF-1-safe */ unsigned int __initdata multiboot_ptr; struct cpuinfo_x86 __read_mostly boot_cpu_data = { 0, 0, 0, 0, -1 };