Received: by 2002:ad5:4acb:0:0:0:0:0 with SMTP id n11csp1550813imw;
        Tue, 5 Jul 2022 11:22:48 -0700 (PDT)
X-Google-Smtp-Source: AGRyM1u2UacyU4oL5k+lyolTMMNXt8R/8rc3sz8SyWulAOUF62P8b2K12YoK9XUXOBujDN/qiS1Z
X-Received: by 2002:a63:8b42:0:b0:40d:a82d:49da with SMTP id j63-20020a638b42000000b0040da82d49damr29692561pge.186.1657045367724;
        Tue, 05 Jul 2022 11:22:47 -0700 (PDT)
ARC-Seal: i=1; a=rsa-sha256; t=1657045367; cv=none;
        d=google.com; s=arc-20160816;
        b=xa0tepfVSC6Y4bsMMjtCdeVuLEg7GD2pnsMHa4eIGL4qB8IJrOs4cFfpemkmOpDQ3T
         o23A/yrRG+gNRS0CGApLMm6INmS1rQLJr13tDsZoYqu+9zM2FKlMo4BukvWSxj+0z1ww
         nV7898166kaWmj2QyGBlgOZhEECHKQxky5ehwq3yoOmtUrvYCnZAmS9c3mmnNTgBTeeC
         sZqUG+Qw0B6wn0b9gt69hV6YLtv5LN5J6cTh7WIJA6chxKITCHKRcSMtA/EHVJVu8NeJ
         kX+ykbH3W9Z9txY8e3LaZeZCDireKCA47GlmMPAUWtEPtJ3U7p8ixRcesfBm+2cHBba0
         Hg/Q==
ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816;
        h=list-id:precedence:in-reply-to:content-disposition:mime-version
         :references:message-id:subject:cc:to:from:date:dkim-signature;
        bh=S+E47bWcrWV9KBgCllYoKidtSNcUgrYwh//SMMW7IQg=;
        b=M0sntXLbynU0sWQhwpYowjSR4xOhSMQnj7fmI93r0eCexWp6zxxG3ceNomjIucBAeo
         4APe4nShTXH70X5UCft4EPS1AJlqlsNSjdkkrmNw1tak51hdyDeJU2YxAt84EtcWpovT
         gg/Bjc1fSHCAyGbKCZOQCNPyjH1NLEDoS6VLQvyAbz500Kcl7i9CdrXG61qyx6q/KWga
         21ld8kMrI8Z/NwT5rAvJ75KwvXQQI8Bww3wmVkuDm961df2FnKRxFG2KXm7UXY9pyiyG
         n4gKTtQJuW4ETEnyi7cC6oU+1UAfgtWypLwMyTgvqhvAjcD/ZudwgpZLZapf3L1QoT87
         U5EA==
ARC-Authentication-Results: i=1; mx.google.com;
       dkim=pass header.i=@infradead.org header.s=casper.20170209 header.b=pZOjYCxC;
       spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20])
        by mx.google.com with ESMTP id d8-20020a170903230800b0016a75602af0si46442162plh.601.2022.07.05.11.22.35;
        Tue, 05 Jul 2022 11:22:47 -0700 (PDT)
Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Authentication-Results: mx.google.com;
       dkim=pass header.i=@infradead.org header.s=casper.20170209 header.b=pZOjYCxC;
       spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S232545AbiGERUp (ORCPT <rfc822;alexandru.stratulat91@gmail.com>
        + 99 others); Tue, 5 Jul 2022 13:20:45 -0400
Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42764 "EHLO
        lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S230346AbiGERUo (ORCPT
        <rfc822;linux-kernel@vger.kernel.org>);
        Tue, 5 Jul 2022 13:20:44 -0400
Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1])
        by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4D293140B4
        for <linux-kernel@vger.kernel.org>; Tue,  5 Jul 2022 10:20:43 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;
        d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version:
        References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To:
        Content-Transfer-Encoding:Content-ID:Content-Description;
        bh=S+E47bWcrWV9KBgCllYoKidtSNcUgrYwh//SMMW7IQg=; b=pZOjYCxChlRKT9cai2wqwr5Fvz
        WoAkakVqqk4X7Pji3bPKqWApeKzzoDnnlQsgVBitOtSm82KyYFqE2f/7nJV4cc7YNbBnHx18Cn8JY
        KnUpGbT4X/CRkJYltzJhyk4f2qatPSYJ5EHDK/HifrqqFOnlmcELAEYsiL3dHCGyjfv2EZHwq/s6k
        d0aF9QNiJk2GpU09BQmZ9S91F+IX6Bk7lkJODB5BG3hu/YuRkD5wxRCmB6THxT38DEItUvHlQ7KJr
        GHMlRX0vFqOlqlnGz2Ah7yIOsRrS7qBjXXmFU1zFHiZFPLtTlyIu0GJBne8qOH/YSjdCw66FWdMFN
        GIpLlDdg==;
Received: from dhcp-077-249-017-003.chello.nl ([77.249.17.3] helo=worktop.programming.kicks-ass.net)
        by casper.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux))
        id 1o8mE1-000lye-Ea; Tue, 05 Jul 2022 17:20:37 +0000
Received: by worktop.programming.kicks-ass.net (Postfix, from userid 1000)
        id 04F0E980059; Tue,  5 Jul 2022 19:20:36 +0200 (CEST)
Date:   Tue, 5 Jul 2022 19:20:36 +0200
From:   Peter Zijlstra <peterz@infradead.org>
To:     Nicholas Piggin <npiggin@gmail.com>
Cc:     Ingo Molnar <mingo@redhat.com>, Will Deacon <will@kernel.org>,
        Waiman Long <longman@redhat.com>,
        Boqun Feng <boqun.feng@gmail.com>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 06/13] locking/qspinlock: merge qspinlock_paravirt.h into
 qspinlock.c
Message-ID: <YsRy5HHdHhRz9z/9@worktop.programming.kicks-ass.net>
References: <20220704143820.3071004-1-npiggin@gmail.com>
 <20220704143820.3071004-7-npiggin@gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20220704143820.3071004-7-npiggin@gmail.com>
X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIM_SIGNED,
        DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,
        SPF_NONE,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no
        version=3.4.6
X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on
        lindbergh.monkeyblade.net
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On Tue, Jul 05, 2022 at 12:38:13AM +1000, Nicholas Piggin wrote:
> There isn't much reason to keep these separate.

The reason was so that other paravirt implementations could be added.

The CNA thing was also implemented this way...