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=-1.1 required=3.0 tests=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 46C3FC433E0 for ; Wed, 20 May 2020 00:30:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0DEC120849 for ; Wed, 20 May 2020 00:30:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1589934626; bh=wf3QGE+jOUgmDKaZ/bBj5o/Z9+gYbBdvv8wlYlrwj8g=; h=References:In-Reply-To:From:Date:Subject:To:Cc:List-ID:From; b=zaljuhfI1WM2z2Gl0dZENMDetE8mdx6Emhjzy7bc5WtQcywH0e7vdJJpC2bCqyDs/ PmU5//KSI63N4u0nrL9/d+DBZbQaGvBaLq1ETK43vWo8E5ZggV3lIdYLSDXsMwUDLN NB3l9TUcTKDr1FCs8i9ykLPxBULaZ9aHAWGmI+i0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728292AbgETAaZ (ORCPT ); Tue, 19 May 2020 20:30:25 -0400 Received: from mail.kernel.org ([198.145.29.99]:42490 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728039AbgETAaY (ORCPT ); Tue, 19 May 2020 20:30:24 -0400 Received: from mail-wm1-f47.google.com (mail-wm1-f47.google.com [209.85.128.47]) (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 2470120899 for ; Wed, 20 May 2020 00:30:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1589934624; bh=wf3QGE+jOUgmDKaZ/bBj5o/Z9+gYbBdvv8wlYlrwj8g=; h=References:In-Reply-To:From:Date:Subject:To:Cc:From; b=OrxovbxHlmzoeGQHeuWbhgPKUSPliHFTim5aE6wMy5V55VrIeo53jicjdlphiZk6g jgsvHR9YsW7YpiC3KucPvb1UuUWKO1EHbq2u/8h+WWHnY22Ncbe81enLXY8SuvCXuD FHVOxGx+d1rO7PirMgVfYMjCziEFlTUekzEm1U4I= Received: by mail-wm1-f47.google.com with SMTP id z4so971391wmi.2 for ; Tue, 19 May 2020 17:30:24 -0700 (PDT) X-Gm-Message-State: AOAM532d4ZQ3PyZ4bZ1Wnuwc5uvLp60Tlcx8zZ4+KAoRFj5WrsZrSnSw ex3IvMDmjxOxKbXEuWxhD/+1JtGFqGgpKwxe5Dl1gQ== X-Google-Smtp-Source: ABdhPJzbCL+4VtDsIgdlH29i1OM9yNGiM76+CoE3hV6Mp7SAcNJ3H5jJEJgrh7/IUEWh5u79FwKzy5DJEQ4EAiZgU+8= X-Received: by 2002:a1c:b3c1:: with SMTP id c184mr1898104wmf.36.1589934622625; Tue, 19 May 2020 17:30:22 -0700 (PDT) MIME-Version: 1.0 References: <20200515234547.710474468@linutronix.de> <20200515235127.101900776@linutronix.de> In-Reply-To: <20200515235127.101900776@linutronix.de> From: Andy Lutomirski Date: Tue, 19 May 2020 17:30:10 -0700 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [patch V6 27/37] x86/entry: Convert KVM vectors to IDTENTRY_SYSVEC To: Thomas Gleixner Cc: LKML , X86 ML , "Paul E. McKenney" , Andy Lutomirski , Alexandre Chartre , Frederic Weisbecker , Paolo Bonzini , Sean Christopherson , Masami Hiramatsu , Petr Mladek , Steven Rostedt , Joel Fernandes , Boris Ostrovsky , Juergen Gross , Brian Gerst , Mathieu Desnoyers , Josh Poimboeuf , Will Deacon , Tom Lendacky , Wei Liu , Michael Kelley , Jason Chen CJ , Zhao Yakui , "Peter Zijlstra (Intel)" 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 Fri, May 15, 2020 at 5:10 PM Thomas Gleixner wrote: > > > Convert KVM specific system vectors to IDTENTRY_SYSVEC*: > > The two empty stub handlers which only increment the stats counter do no > need to run on the interrupt stack. Use IDTENTRY_SYSVEC_DIRECT for them. > > The wakeup handler does more work and runs on the interrupt stack. > > None of these handlers need to save and restore the irq_regs pointer. Acked-by: Andy Lutomirski