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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 89EEEC433FE for ; Tue, 8 Mar 2022 15:56:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1348153AbiCHP5L (ORCPT ); Tue, 8 Mar 2022 10:57:11 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57186 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1348043AbiCHP4E (ORCPT ); Tue, 8 Mar 2022 10:56:04 -0500 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D95074F9CE for ; Tue, 8 Mar 2022 07:55:05 -0800 (PST) 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=N852q9aWEiK0I+Tjg4v4NRP8lVB+Lypx5hQ0mJxyRSo=; b=uHBky8qUbVEnD4beh5Xt3fDSbz 1uKLADBp/b7uDGppsDtuNhXhRqfHAsNsATnLwe6al5u/lxNshzvKDi1j00hZ3m97I0pcflNg3rl7s uvYm2gwx20pmPMxH2pWHBOg4lwa4n0OBASwKHjM8CMLx59pjiyBLaOo7JznNBKzpCa2NgRkuJvtnO Qa+Kf1AQiFRhsiQV7wPDCexv7VTeILXLv2msBqrla8qXJ9GSqYSQFTV8FBjLjlMzAAaJ4givH7kqp GIHEieslEe0Q824y8rL18WOpzIppsZ2l02GcWplG8A7E45Sd9ult9PeXo8s4/YA4ZD1uTPw8wZQC0 wYcWxgcw==; 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 1nRcAc-00GIv3-BU; Tue, 08 Mar 2022 15:54:42 +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 (4096 bits)) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id 33C3B30175B; Tue, 8 Mar 2022 16:54:40 +0100 (CET) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 0) id 258BB2B56191C; Tue, 8 Mar 2022 16:54:39 +0100 (CET) Message-ID: <20220308154318.168850084@infradead.org> User-Agent: quilt/0.66 Date: Tue, 08 Mar 2022 16:30:28 +0100 From: Peter Zijlstra To: x86@kernel.org, joao@overdrivepizza.com, hjl.tools@gmail.com, jpoimboe@redhat.com, andrew.cooper3@citrix.com Cc: linux-kernel@vger.kernel.org, peterz@infradead.org, ndesaulniers@google.com, keescook@chromium.org, samitolvanen@google.com, mark.rutland@arm.com, alyssa.milburn@intel.com, mbenes@suse.cz, rostedt@goodmis.org, mhiramat@kernel.org, alexei.starovoitov@gmail.com Subject: [PATCH v4 17/45] x86/ibt,kvm: Add ENDBR to fastops References: <20220308153011.021123062@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 Signed-off-by: Peter Zijlstra (Intel) --- arch/x86/kvm/emulate.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -189,7 +189,7 @@ #define X16(x...) X8(x), X8(x) #define NR_FASTOP (ilog2(sizeof(ulong)) + 1) -#define FASTOP_SIZE 8 +#define FASTOP_SIZE (8 * (1 + HAS_KERNEL_IBT)) struct opcode { u64 flags; @@ -311,7 +311,8 @@ static int fastop(struct x86_emulate_ctx #define __FOP_FUNC(name) \ ".align " __stringify(FASTOP_SIZE) " \n\t" \ ".type " name ", @function \n\t" \ - name ":\n\t" + name ":\n\t" \ + ASM_ENDBR #define FOP_FUNC(name) \ __FOP_FUNC(#name) @@ -433,6 +434,7 @@ static int fastop(struct x86_emulate_ctx ".align 4 \n\t" \ ".type " #op ", @function \n\t" \ #op ": \n\t" \ + ASM_ENDBR \ #op " %al \n\t" \ __FOP_RET(#op)