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=-4.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED autolearn=no 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 4B316C433DF for ; Thu, 20 Aug 2020 22:43:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 20AD820738 for ; Thu, 20 Aug 2020 22:43:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597963403; bh=5xHB7attkpmdUNvdTySFDMgYf8GNV6BlGCYBOuLcHEc=; h=References:In-Reply-To:From:Date:Subject:To:Cc:List-ID:From; b=QdS9gSsakW2mCAacOVBRnhtZWpD1TgEhN4CDt1i6pPITH52jfMAon9A4oqxHkelp5 5RA8wZE7VzIGmwklSsmUqzsNUnqtngUoOh3jzorRbggHqyjDkjct/xsqsVXvBmz7xD UD69Rpsld7O7MSCVkNKUjcSa+Bqiw8OGRL8dbLi4= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728580AbgHTWnV (ORCPT ); Thu, 20 Aug 2020 18:43:21 -0400 Received: from mail.kernel.org ([198.145.29.99]:45312 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728477AbgHTWnV (ORCPT ); Thu, 20 Aug 2020 18:43:21 -0400 Received: from mail-wr1-f44.google.com (mail-wr1-f44.google.com [209.85.221.44]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 248BA22B40 for ; Thu, 20 Aug 2020 22:43:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597963400; bh=5xHB7attkpmdUNvdTySFDMgYf8GNV6BlGCYBOuLcHEc=; h=References:In-Reply-To:From:Date:Subject:To:Cc:From; b=COYHVBXO3lN06Rb02cRiYn5f/fqzDSmlDtxTdw1OZp0e9jpSARPBBrCgxDlqxBLz8 3zUefbTY6RZimHz3I2/okoRrPpv88Ovypw14zYVVXm/XzNuCCy22hRi0qNBQST53YK /tCG9XElPADBs8w74fIZAZbk6itbOWNkyAxd3fps= Received: by mail-wr1-f44.google.com with SMTP id 88so189626wrh.3 for ; Thu, 20 Aug 2020 15:43:20 -0700 (PDT) X-Gm-Message-State: AOAM532AQUC/Th4z/vftcadPJQRJRURjHf7AXOUKKjUugPOW42inopCi oS0IJm/oyaXvnCmXvIOY+y6nnQlATI6gXDF1uFHXCw== X-Google-Smtp-Source: ABdhPJyIgAqsMA8JsQyikj/7ZlGQn610nb8EEcUeoTdpgwBdv87N4yg0Jjwegi5kVutkq43iZp2VoPR538rleGH4AVg= X-Received: by 2002:adf:cc88:: with SMTP id p8mr7829wrj.70.1597963398679; Thu, 20 Aug 2020 15:43:18 -0700 (PDT) MIME-Version: 1.0 References: <8b9bd05f187231df008d48cf818a6a311cbd5c98.1597882384.git.luto@kernel.org> <20200820084427.GO2674@hirez.programming.kicks-ass.net> In-Reply-To: <20200820084427.GO2674@hirez.programming.kicks-ass.net> From: Andy Lutomirski Date: Thu, 20 Aug 2020 15:43:07 -0700 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [PATCH] x86/debug: Allow a single level of #DB recursion To: Peter Zijlstra Cc: Andy Lutomirski , X86 ML , Kyle Huey , Alexandre Chartre , "Robert O'Callahan" , LKML , "Paul E. McKenney" , Frederic Weisbecker , Paolo Bonzini , Sean Christopherson , Masami Hiramatsu , Petr Mladek , Steven Rostedt , Joel Fernandes , Boris Ostrovsky , Juergen Gross , Brian Gerst , Mathieu Desnoyers , Will Deacon , Josh Poimboeuf , stable Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Aug 20, 2020 at 1:44 AM wrote: > > On Wed, Aug 19, 2020 at 05:15:43PM -0700, Andy Lutomirski wrote: > > +static __always_inline void debug_enter(unsigned long *dr6, unsigned long *dr7) > > +{ > > + *dr6 = debug_read_clear_dr6(); > > } > > > > static __always_inline void debug_exit(unsigned long dr7) > > { > > - local_db_restore(dr7); > > } > > That's all unused after this patch, might as well remove it. Whoops.