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=-2.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,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 62CFFC433F5 for ; Tue, 21 Sep 2021 12:17:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3952160F4C for ; Tue, 21 Sep 2021 12:17:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231211AbhIUMSk (ORCPT ); Tue, 21 Sep 2021 08:18:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33934 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229984AbhIUMSk (ORCPT ); Tue, 21 Sep 2021 08:18:40 -0400 Received: from mail-ed1-x52e.google.com (mail-ed1-x52e.google.com [IPv6:2a00:1450:4864:20::52e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C30CBC061574; Tue, 21 Sep 2021 05:17:11 -0700 (PDT) Received: by mail-ed1-x52e.google.com with SMTP id r5so4729477edi.10; Tue, 21 Sep 2021 05:17:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=95V6ux+YItWQAUtCiwuExzmwXQnRB/GloOPEEdZ3MdU=; b=GvoevMtwpeSENsO0HW4htGshZNN4RfcKHKMrFLpknFFa6zKv1xNv40X9P9usbFWHtJ QKLzMF9owaWe5njsnvky7MNu0mJOFyR11GpGSYHoXWtx7Ph1Q8c+NTNZHKwr80IkWO4V ChjMla1TYRISUvk/HwagZ97gUmgZGkyGPTxlXYUXTWFheVyNaCp+DZL7Q4+GI5VXbj1H 8URqgcincrZM2AApQPTZDb01aWcJzb78kgYgHsMhGcn8hyZyFE0cUVjn3XPuKKpOkC78 lH2R3gtp5RqygWKoyGh5lw/ZQt9QS43C4WSm+kruZkOmwkAaybW9EiG0C9DnAuUEf+dx EBCA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=95V6ux+YItWQAUtCiwuExzmwXQnRB/GloOPEEdZ3MdU=; b=A6pZ48gt1RjfyOaKNHFDqTDx0U33m9LQ7Xcm5B68Y3t7t7jx1LYq9mNGTwdvM7YS26 ZQ3q2cbgJywwlTcBV5pAHGoy7Rr51Zmo5tNW7b9EhEtXvvK52x+1sbwFUNaVfkrkqBYs PR1dphMys0LxlmW4z4dZXXkug38dq1O3dQAsm3TJCBuXzVUnSdpZJBnv+pCa8eeAp5zl XfJTPUMOUMfffvGazXGpwuyD+otpMT3kt0UcQ+FKkvUxWcaAjl3+HEUWVsgGBAbyt4AF VgdtnPypsVUkQMMjt8HyUWooAXH8fxOJ+WdZvkHHdA3cBb5GYpx7ccJB+z6Pt/pJYrEx qXtw== X-Gm-Message-State: AOAM5318eeaQxj0Dca0nxGS/bIr63j3rWp3iMf8wB0u0C79zpVd10omY RM6K9n8bW8CNcHyvEN6JQWmJC8u+kLK3qxkdBUQ= X-Google-Smtp-Source: ABdhPJxCfbselb+XtA+2QpgqB4YRIopMRRstTCPkUE9QXlzT6B9AoPlNAPQeuz3N18XME+ds4GKE4E2TOCkZ/RBjnkw= X-Received: by 2002:a17:906:2887:: with SMTP id o7mr34025496ejd.425.1632226617862; Tue, 21 Sep 2021 05:16:57 -0700 (PDT) MIME-Version: 1.0 References: <8003272.NyiUUSuA9g@kreacher> <1798761.CQOukoFCf9@kreacher> In-Reply-To: From: Andy Shevchenko Date: Tue, 21 Sep 2021 15:16:17 +0300 Message-ID: Subject: Re: [PATCH v1 1/5] PCI: PM: x86: Drop Intel MID PCI PM support To: "Rafael J. Wysocki" Cc: "Rafael J. Wysocki" , Linux ACPI , Linux PCI , x86 Maintainers , LKML , Bjorn Helgaas , Andy Shevchenko , Mika Westerberg , Len Brown Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org On Mon, Sep 20, 2021 at 1:57 PM Rafael J. Wysocki wrote: > On Sun, Sep 19, 2021 at 10:32 PM Andy Shevchenko > wrote: > > On Sun, Sep 19, 2021 at 9:01 AM Rafael J. Wysocki wrote: ... > > > I am going to post patches removing the rest of MID support from arch/x86/ > > > and elsewhere, but that is still quite a bit of stuff and I don't want this > > > simple PCI PM series to depend on that work. > > > > This is still being used by MID with ACPI assisted (*) support. > > Hence, not ack. > > > > *) ACPI layer is provided by U-Boot and can't fulfill all possible > > features that ACPI may use in the Linux kernel. > > OK, good to know. > > I'm not sure how this PCI PM stuff works with ACPI. It doesn't that is the point. The PCI is very interesting there and what I meant is that the ACPI implementation I have provided via U-Boot does not cover these. If you have any hints/ideas how it may be handled, I am all ears! > It looks like > this relies on a specific ordering of arch_initcall() calls for > correctness which is sort of fragile. -- With Best Regards, Andy Shevchenko