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=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 F09B5C4743C for ; Mon, 21 Jun 2021 12:04:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D594C6112D for ; Mon, 21 Jun 2021 12:04:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230338AbhFUMGV (ORCPT ); Mon, 21 Jun 2021 08:06:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53546 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230286AbhFUMGF (ORCPT ); Mon, 21 Jun 2021 08:06:05 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 04733C06175F for ; Mon, 21 Jun 2021 05:03:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Type:MIME-Version:References: Subject:Cc:To:From:Date:Message-ID:Sender:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:In-Reply-To; bh=pQl2yh+6pyJV3VV2LohDGaWaBV2tIjTEtliz0OA6/QM=; b=P4TQKbfiIodSpqPBO40FBRXeCH BxKClW4SKbXlyBGWz/U2NDxyVFPZn3/d2RFPu5vTX6KsPW/fvRVjTad/aP0w6I9oJLBEmGbatBPgg r21Yu1MM/4rV4ZTaOzdiScyIwWPkNvuMAL6ylWGKgAQIrmXT6pE68HbYlxqtnB9lzfD9dJBs2qxoa fm9yqw/576XEH/hHRvnOrE6ysKM5UFshTiQSDN78D81LEZ0ggSWjXJfh/GEmfx8g0lI1UewkIe37b fRan6pqaXPQG6WzakHY9O13Jwb2fibFAZbj8wjav2XQFWmeEpqRX2VWjIM5fkx89lF4W2/1lPw1pl 1Dz3gnhA==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=noisy.programming.kicks-ass.net) by casper.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1lvIdY-00D3hz-T4; Mon, 21 Jun 2021 12:02:48 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id B89F13005CA; Mon, 21 Jun 2021 14:02:39 +0200 (CEST) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 0) id 4E2A3235EE38E; Mon, 21 Jun 2021 14:02:39 +0200 (CEST) Message-ID: <20210621120121.657369642@infradead.org> User-Agent: quilt/0.66 Date: Mon, 21 Jun 2021 13:12:49 +0200 From: Peter Zijlstra To: jpoimboe@redhat.com, tglx@linutronix.de Cc: linux-kernel@vger.kernel.org, peterz@infradead.org, joro@8bytes.org, boris.ostrovsky@oracle.com, jgross@suse.com, x86@kernel.org, mbenes@suse.com Subject: [RFC][PATCH 16/18] x86/xen: Mark xen_force_evtchn_callback() noinstr References: <20210621111233.344964031@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org vmlinux.o: warning: objtool: check_events()+0xd: call to xen_force_evtchn_callback() leaves .noinstr.text section Signed-off-by: Peter Zijlstra (Intel) --- arch/x86/include/asm/xen/hypercall.h | 2 +- arch/x86/xen/irq.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) --- a/arch/x86/include/asm/xen/hypercall.h +++ b/arch/x86/include/asm/xen/hypercall.h @@ -358,7 +358,7 @@ HYPERVISOR_event_channel_op(int cmd, voi return _hypercall2(int, event_channel_op, cmd, arg); } -static inline int +static __always_inline int HYPERVISOR_xen_version(int cmd, void *arg) { return _hypercall2(int, xen_version, cmd, arg); --- a/arch/x86/xen/irq.c +++ b/arch/x86/xen/irq.c @@ -19,7 +19,7 @@ * callback mask. We do this in a very simple manner, by making a call * down into Xen. The pending flag will be checked by Xen on return. */ -void xen_force_evtchn_callback(void) +noinstr void xen_force_evtchn_callback(void) { (void)HYPERVISOR_xen_version(0, NULL); }