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[209.132.180.67]) by mx.google.com with ESMTP id c12si38608692pgq.390.2019.05.01.12.34.47; Wed, 01 May 2019 12:35:03 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=mT2RvnVM; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726390AbfEATdg (ORCPT + 99 others); Wed, 1 May 2019 15:33:36 -0400 Received: from mail.kernel.org ([198.145.29.99]:47700 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726120AbfEATdg (ORCPT ); Wed, 1 May 2019 15:33:36 -0400 Received: from pobox.suse.cz (prg-ext-pat.suse.com [213.151.95.130]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id F258B20866; Wed, 1 May 2019 19:33:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1556739215; bh=BNe8Z3wFeWB5CKjbFI6Cj/w/lrCFZr0sTHpfLA4jSpo=; h=Date:From:To:cc:Subject:In-Reply-To:References:From; b=mT2RvnVM5A7+Dhk0OVEHuwbrtVXLMyKKKGUohSRtB1363e9b1sk729M/eOl57Ho8L vYC9pTXAUkTl1A0yV91lcV2cE5QHb3kQ714RzZDf9tfE5QScVcHLv9l4QuNyX6GY7W h7MtGN4uCKEEOg7HEDtDMY8NoD3I/kdFAQvZbibw= Date: Wed, 1 May 2019 21:33:28 +0200 (CEST) From: Jiri Kosina To: Steven Rostedt cc: Linus Torvalds , Peter Zijlstra , Andy Lutomirski , Nicolai Stange , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , the arch/x86 maintainers , Josh Poimboeuf , Miroslav Benes , Petr Mladek , Joe Lawrence , Shuah Khan , Konrad Rzeszutek Wilk , Tim Chen , Sebastian Andrzej Siewior , Mimi Zohar , Juergen Gross , Nick Desaulniers , Nayna Jain , Masahiro Yamada , Joerg Roedel , Linux List Kernel Mailing , live-patching@vger.kernel.org, "open list:KERNEL SELFTEST FRAMEWORK" Subject: Re: [RFC][PATCH] ftrace/x86: Emulate call function while updating in breakpoint handler In-Reply-To: <20190501151330.023cc620@gandalf.local.home> Message-ID: References: <20190430135602.GD2589@hirez.programming.kicks-ass.net> <20190430130359.330e895b@gandalf.local.home> <20190430132024.0f03f5b8@gandalf.local.home> <20190430134913.4e29ce72@gandalf.local.home> <20190501131117.GW2623@hirez.programming.kicks-ass.net> <20190501151330.023cc620@gandalf.local.home> User-Agent: Alpine 2.21 (LSU 202 2017-01-01) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 1 May 2019, Steven Rostedt wrote: > I never tested the 32 bit version of this. And we could just not > implement it (I don't think there's live kernel patching for it > either). That's correct, there is no livepatching on x86_32 (and no plans for it). CONFIG_LIVEPATCH is not available for 32bit builds at all. -- Jiri Kosina SUSE Labs