From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3D868C169C4 for ; Mon, 11 Feb 2019 07:41:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 07E082084D for ; Mon, 11 Feb 2019 07:41:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726977AbfBKHlE (ORCPT ); Mon, 11 Feb 2019 02:41:04 -0500 Received: from mx1.redhat.com ([209.132.183.28]:58222 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725951AbfBKHlE (ORCPT ); Mon, 11 Feb 2019 02:41:04 -0500 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 8D70EC04BE02; Mon, 11 Feb 2019 07:41:03 +0000 (UTC) Received: from localhost (ovpn-12-138.pek2.redhat.com [10.72.12.138]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 920E75B682; Mon, 11 Feb 2019 07:40:59 +0000 (UTC) Date: Mon, 11 Feb 2019 15:40:56 +0800 From: Baoquan He To: linux-kernel@vger.kernel.org Cc: x86@kernel.org, kexec@lists.infradead.org, bp@alien8.de, hpa@zytor.com, tglx@linutronix.de, dyoung@redhat.com, mingo@kernel.org, kirill.shutemov@linux.intel.com Subject: [PATCH v2 1/3] x86/boot: Add xloadflags bits for 5-level kernel checking Message-ID: <20190211074056.GB2332@localhost> References: <20190125022817.29506-1-bhe@redhat.com> <20190125022817.29506-2-bhe@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190125022817.29506-2-bhe@redhat.com> User-Agent: Mutt/1.10.1 (2018-07-13) X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.31]); Mon, 11 Feb 2019 07:41:03 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add two bits XLF_5LEVEL and XLF_5LEVEL_ENABLED for 5-level kernel. Bit XLF_5LEVEL indicates if 5-level related code is contained in this kernel. Bit XLF_5LEVEL_ENABLED indicates if CONFIG_X86_5LEVEL=y is set. They are being used in later patch to check if kexec/kdump kernel is loaded in right place. Signed-off-by: Baoquan He --- v1->v2: Change the wrong term in subject pointed out by tglx. arch/x86/boot/header.S | 12 +++++++++++- arch/x86/include/uapi/asm/bootparam.h | 2 ++ 2 files changed, 13 insertions(+), 1 deletion(-) diff --git a/arch/x86/boot/header.S b/arch/x86/boot/header.S index 850b8762e889..be19f4199727 100644 --- a/arch/x86/boot/header.S +++ b/arch/x86/boot/header.S @@ -419,7 +419,17 @@ xloadflags: # define XLF4 0 #endif - .word XLF0 | XLF1 | XLF23 | XLF4 +#ifdef CONFIG_X86_64 +#ifdef CONFIG_X86_5LEVEL +#define XLF56 (XLF_5LEVEL|XLF_5LEVEL_ENABLED) +#else +#define XLF56 XLF_5LEVEL +#endif +#else +#define XLF56 0 +#endif + + .word XLF0 | XLF1 | XLF23 | XLF4 | XLF56 cmdline_size: .long COMMAND_LINE_SIZE-1 #length of the command line, #added with boot protocol diff --git a/arch/x86/include/uapi/asm/bootparam.h b/arch/x86/include/uapi/asm/bootparam.h index 60733f137e9a..c895df5482c5 100644 --- a/arch/x86/include/uapi/asm/bootparam.h +++ b/arch/x86/include/uapi/asm/bootparam.h @@ -29,6 +29,8 @@ #define XLF_EFI_HANDOVER_32 (1<<2) #define XLF_EFI_HANDOVER_64 (1<<3) #define XLF_EFI_KEXEC (1<<4) +#define XLF_5LEVEL (1<<5) +#define XLF_5LEVEL_ENABLED (1<<6) #ifndef __ASSEMBLY__ -- 2.17.2 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mx1.redhat.com ([209.132.183.28]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1gt6DA-0002lk-1U for kexec@lists.infradead.org; Mon, 11 Feb 2019 07:41:05 +0000 Date: Mon, 11 Feb 2019 15:40:56 +0800 From: Baoquan He Subject: [PATCH v2 1/3] x86/boot: Add xloadflags bits for 5-level kernel checking Message-ID: <20190211074056.GB2332@localhost> References: <20190125022817.29506-1-bhe@redhat.com> <20190125022817.29506-2-bhe@redhat.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20190125022817.29506-2-bhe@redhat.com> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "kexec" Errors-To: kexec-bounces+dwmw2=infradead.org@lists.infradead.org To: linux-kernel@vger.kernel.org Cc: x86@kernel.org, kexec@lists.infradead.org, bp@alien8.de, hpa@zytor.com, tglx@linutronix.de, dyoung@redhat.com, mingo@kernel.org, kirill.shutemov@linux.intel.com Add two bits XLF_5LEVEL and XLF_5LEVEL_ENABLED for 5-level kernel. Bit XLF_5LEVEL indicates if 5-level related code is contained in this kernel. Bit XLF_5LEVEL_ENABLED indicates if CONFIG_X86_5LEVEL=y is set. They are being used in later patch to check if kexec/kdump kernel is loaded in right place. Signed-off-by: Baoquan He --- v1->v2: Change the wrong term in subject pointed out by tglx. arch/x86/boot/header.S | 12 +++++++++++- arch/x86/include/uapi/asm/bootparam.h | 2 ++ 2 files changed, 13 insertions(+), 1 deletion(-) diff --git a/arch/x86/boot/header.S b/arch/x86/boot/header.S index 850b8762e889..be19f4199727 100644 --- a/arch/x86/boot/header.S +++ b/arch/x86/boot/header.S @@ -419,7 +419,17 @@ xloadflags: # define XLF4 0 #endif - .word XLF0 | XLF1 | XLF23 | XLF4 +#ifdef CONFIG_X86_64 +#ifdef CONFIG_X86_5LEVEL +#define XLF56 (XLF_5LEVEL|XLF_5LEVEL_ENABLED) +#else +#define XLF56 XLF_5LEVEL +#endif +#else +#define XLF56 0 +#endif + + .word XLF0 | XLF1 | XLF23 | XLF4 | XLF56 cmdline_size: .long COMMAND_LINE_SIZE-1 #length of the command line, #added with boot protocol diff --git a/arch/x86/include/uapi/asm/bootparam.h b/arch/x86/include/uapi/asm/bootparam.h index 60733f137e9a..c895df5482c5 100644 --- a/arch/x86/include/uapi/asm/bootparam.h +++ b/arch/x86/include/uapi/asm/bootparam.h @@ -29,6 +29,8 @@ #define XLF_EFI_HANDOVER_32 (1<<2) #define XLF_EFI_HANDOVER_64 (1<<3) #define XLF_EFI_KEXEC (1<<4) +#define XLF_5LEVEL (1<<5) +#define XLF_5LEVEL_ENABLED (1<<6) #ifndef __ASSEMBLY__ -- 2.17.2 _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec