From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759988AbcBYFxr (ORCPT ); Thu, 25 Feb 2016 00:53:47 -0500 Received: from torg.zytor.com ([198.137.202.12]:54306 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1759802AbcBYFxp (ORCPT ); Thu, 25 Feb 2016 00:53:45 -0500 Date: Wed, 24 Feb 2016 21:53:09 -0800 From: tip-bot for Chris J Arges Message-ID: Cc: tglx@linutronix.de, linux-kernel@vger.kernel.org, peterz@infradead.org, chris.j.arges@canonical.com, jpoimboe@redhat.com, mingo@kernel.org, torvalds@linux-foundation.org, hpa@zytor.com Reply-To: hpa@zytor.com, torvalds@linux-foundation.org, mingo@kernel.org, chris.j.arges@canonical.com, jpoimboe@redhat.com, tglx@linutronix.de, peterz@infradead.org, linux-kernel@vger.kernel.org In-Reply-To: <1453499078-9330-3-git-send-email-chris.j.arges@canonical.com> References: <1453499078-9330-3-git-send-email-chris.j.arges@canonical.com> To: linux-tip-commits@vger.kernel.org Subject: [tip:x86/debug] x86/kvm: Add output operand in vmx_handle_external_intr inline asm Git-Commit-ID: 3f62de5f6f369b67b7ac709e3c942c9130d2c51a 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: 3f62de5f6f369b67b7ac709e3c942c9130d2c51a Gitweb: http://git.kernel.org/tip/3f62de5f6f369b67b7ac709e3c942c9130d2c51a Author: Chris J Arges AuthorDate: Fri, 22 Jan 2016 15:44:38 -0600 Committer: Ingo Molnar CommitDate: Wed, 24 Feb 2016 08:35:44 +0100 x86/kvm: Add output operand in vmx_handle_external_intr inline asm Stacktool generates the following warning: stacktool: arch/x86/kvm/vmx.o: vmx_handle_external_intr()+0x67: call without frame pointer save/setup By adding the stackpointer as an output operand, this patch ensures that a stack frame is created when CONFIG_FRAME_POINTER is enabled for the inline assmebly statement. Signed-off-by: Chris J Arges Reviewed-by: Josh Poimboeuf Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: gleb@kernel.org Cc: kvm@vger.kernel.org Cc: live-patching@vger.kernel.org Cc: pbonzini@redhat.com Link: http://lkml.kernel.org/r/1453499078-9330-3-git-send-email-chris.j.arges@canonical.com Signed-off-by: Ingo Molnar --- arch/x86/kvm/vmx.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index e2951b6..e153522 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -8356,6 +8356,7 @@ static void vmx_complete_atomic_exit(struct vcpu_vmx *vmx) static void vmx_handle_external_intr(struct kvm_vcpu *vcpu) { u32 exit_intr_info = vmcs_read32(VM_EXIT_INTR_INFO); + register void *__sp asm(_ASM_SP); /* * If external interrupt exists, IF bit is set in rflags/eflags on the @@ -8388,8 +8389,9 @@ static void vmx_handle_external_intr(struct kvm_vcpu *vcpu) "call *%[entry]\n\t" : #ifdef CONFIG_X86_64 - [sp]"=&r"(tmp) + [sp]"=&r"(tmp), #endif + "+r"(__sp) : [entry]"r"(entry), [ss]"i"(__KERNEL_DS),