From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752919AbdI1LA5 (ORCPT ); Thu, 28 Sep 2017 07:00:57 -0400 Received: from terminus.zytor.com ([65.50.211.136]:53891 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752751AbdI1LAz (ORCPT ); Thu, 28 Sep 2017 07:00:55 -0400 Date: Thu, 28 Sep 2017 03:57:18 -0700 From: tip-bot for Josh Poimboeuf Message-ID: Cc: boris.ostrovsky@oracle.com, tglx@linutronix.de, torvalds@linux-foundation.org, jgross@suse.com, linux-kernel@vger.kernel.org, mingo@kernel.org, luto@kernel.org, peterz@infradead.org, jslaby@suse.cz, jpoimboe@redhat.com, hpa@zytor.com Reply-To: linux-kernel@vger.kernel.org, jgross@suse.com, tglx@linutronix.de, torvalds@linux-foundation.org, boris.ostrovsky@oracle.com, jslaby@suse.cz, hpa@zytor.com, jpoimboe@redhat.com, peterz@infradead.org, luto@kernel.org, mingo@kernel.org In-Reply-To: <70ed2eb516fe9266be766d953f93c2571bca88cc.1505764066.git.jpoimboe@redhat.com> References: <70ed2eb516fe9266be766d953f93c2571bca88cc.1505764066.git.jpoimboe@redhat.com> To: linux-tip-commits@vger.kernel.org Subject: [tip:core/objtool] x86/xen: Add unwind hint annotations Git-Commit-ID: abbe1cac6214d81d2f4e149aba64a8760703144e X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: abbe1cac6214d81d2f4e149aba64a8760703144e Gitweb: https://git.kernel.org/tip/abbe1cac6214d81d2f4e149aba64a8760703144e Author: Josh Poimboeuf AuthorDate: Mon, 18 Sep 2017 21:43:36 -0500 Committer: Ingo Molnar CommitDate: Thu, 28 Sep 2017 09:39:03 +0200 x86/xen: Add unwind hint annotations Add unwind hint annotations to the xen head code so the ORC unwinder can read head_64.o. hypercall_page needs empty annotations at 32-byte intervals to match the 'xen_hypercall_*' ELF functions at those locations. Signed-off-by: Josh Poimboeuf Cc: Andy Lutomirski Cc: Boris Ostrovsky Cc: Jiri Slaby Cc: Juergen Gross Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Link: http://lkml.kernel.org/r/70ed2eb516fe9266be766d953f93c2571bca88cc.1505764066.git.jpoimboe@redhat.com Signed-off-by: Ingo Molnar --- arch/x86/xen/xen-head.S | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/arch/x86/xen/xen-head.S b/arch/x86/xen/xen-head.S index 9753225..124941d 100644 --- a/arch/x86/xen/xen-head.S +++ b/arch/x86/xen/xen-head.S @@ -9,6 +9,7 @@ #include #include #include +#include #include #include @@ -19,6 +20,7 @@ #ifdef CONFIG_XEN_PV __INIT ENTRY(startup_xen) + UNWIND_HINT_EMPTY cld /* Clear .bss */ @@ -40,7 +42,10 @@ END(startup_xen) .pushsection .text .balign PAGE_SIZE ENTRY(hypercall_page) - .skip PAGE_SIZE + .rept (PAGE_SIZE / 32) + UNWIND_HINT_EMPTY + .skip 32 + .endr #define HYPERCALL(n) \ .equ xen_hypercall_##n, hypercall_page + __HYPERVISOR_##n * 32; \