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=-7.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 E1EB8C5519F for ; Fri, 20 Nov 2020 12:08:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 846B6221FC for ; Fri, 20 Nov 2020 12:08:04 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=suse.com header.i=@suse.com header.b="a37bqq6F" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727815AbgKTMIE (ORCPT ); Fri, 20 Nov 2020 07:08:04 -0500 Received: from mx2.suse.de ([195.135.220.15]:47806 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727100AbgKTMIC (ORCPT ); Fri, 20 Nov 2020 07:08:02 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1605874080; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=fi5hxOosLe4ci8CACHcYoETyc/XuBOtY9iexkoP8wiU=; b=a37bqq6FVQfk9qmoQUIC8F5b1rg8hAsd/nFAvEv+0uWryKISA3u857vpvnoUEs8U2FyIRJ QxGZDTbHFZpBg4pohlE7UZQvxR9+3R+lntDjNSctEpkEUrDuwjlxVL7L1r27Uelrhbxkdq Lx8gvFdR71AmMsL9SFcxyQO7sWimq5I= Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id A5B91AFDB; Fri, 20 Nov 2020 12:08:00 +0000 (UTC) Subject: Re: [PATCH v2 06/12] x86/paravirt: switch time pvops functions to use static_call() To: Peter Zijlstra Cc: xen-devel@lists.xenproject.org, x86@kernel.org, linux-kernel@vger.kernel.org, linux-hyperv@vger.kernel.org, virtualization@lists.linux-foundation.org, kvm@vger.kernel.org, luto@kernel.org, Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , "K. Y. Srinivasan" , Haiyang Zhang , Stephen Hemminger , Wei Liu , Deep Shah , "VMware, Inc." , Paolo Bonzini , Sean Christopherson , Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Joerg Roedel , Boris Ostrovsky , Stefano Stabellini , Daniel Lezcano , Juri Lelli , Vincent Guittot , Dietmar Eggemann , Steven Rostedt , Ben Segall , Mel Gorman , Daniel Bristot de Oliveira References: <20201120114630.13552-1-jgross@suse.com> <20201120114630.13552-7-jgross@suse.com> <20201120120154.GE3021@hirez.programming.kicks-ass.net> From: =?UTF-8?B?SsO8cmdlbiBHcm/Dnw==?= Message-ID: Date: Fri, 20 Nov 2020 13:07:58 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.4.0 MIME-Version: 1.0 In-Reply-To: <20201120120154.GE3021@hirez.programming.kicks-ass.net> Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="Js2C2dWgfc4nTTtJ5MoQYP8PDLusaIBXv" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --Js2C2dWgfc4nTTtJ5MoQYP8PDLusaIBXv Content-Type: multipart/mixed; boundary="gBfRrUi6EIKy8OO8lvbihDGpshaEHf5sL"; protected-headers="v1" From: =?UTF-8?B?SsO8cmdlbiBHcm/Dnw==?= To: Peter Zijlstra Cc: xen-devel@lists.xenproject.org, x86@kernel.org, linux-kernel@vger.kernel.org, linux-hyperv@vger.kernel.org, virtualization@lists.linux-foundation.org, kvm@vger.kernel.org, luto@kernel.org, Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , "K. Y. Srinivasan" , Haiyang Zhang , Stephen Hemminger , Wei Liu , Deep Shah , "VMware, Inc." , Paolo Bonzini , Sean Christopherson , Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Joerg Roedel , Boris Ostrovsky , Stefano Stabellini , Daniel Lezcano , Juri Lelli , Vincent Guittot , Dietmar Eggemann , Steven Rostedt , Ben Segall , Mel Gorman , Daniel Bristot de Oliveira Message-ID: Subject: Re: [PATCH v2 06/12] x86/paravirt: switch time pvops functions to use static_call() References: <20201120114630.13552-1-jgross@suse.com> <20201120114630.13552-7-jgross@suse.com> <20201120120154.GE3021@hirez.programming.kicks-ass.net> In-Reply-To: <20201120120154.GE3021@hirez.programming.kicks-ass.net> --gBfRrUi6EIKy8OO8lvbihDGpshaEHf5sL Content-Type: multipart/mixed; boundary="------------2D61E8643D7878B5993793A0" Content-Language: en-US This is a multi-part message in MIME format. --------------2D61E8643D7878B5993793A0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: quoted-printable On 20.11.20 13:01, Peter Zijlstra wrote: > On Fri, Nov 20, 2020 at 12:46:24PM +0100, Juergen Gross wrote: >> The time pvops functions are the only ones left which might be >> used in 32-bit mode and which return a 64-bit value. >> >> Switch them to use the static_call() mechanism instead of pvops, as >> this allows quite some simplification of the pvops implementation. >> >> Due to include hell this requires to split out the time interfaces >> into a new header file. >=20 > There's also this patch floating around; just in case that would come i= n > handy: >=20 > https://lkml.kernel.org/r/20201110005609.40989-3-frederic@kernel.org= >=20 Ah, yes. This would make life much easier. 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