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=-14.0 required=3.0 tests=BAYES_00,INCLUDES_CR_TRAILER, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS autolearn=unavailable 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 B669BC433EF for ; Wed, 22 Sep 2021 12:47:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8B2D8610A0 for ; Wed, 22 Sep 2021 12:47:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236106AbhIVMsx (ORCPT ); Wed, 22 Sep 2021 08:48:53 -0400 Received: from mail-ot1-f44.google.com ([209.85.210.44]:33437 "EHLO mail-ot1-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236085AbhIVMsr (ORCPT ); Wed, 22 Sep 2021 08:48:47 -0400 Received: by mail-ot1-f44.google.com with SMTP id c42-20020a05683034aa00b0051f4b99c40cso3368853otu.0; Wed, 22 Sep 2021 05:47:17 -0700 (PDT) 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=UUiCBNielMa38BIb9BHPZtFbJzf43TTIl3svNHNMP3c=; b=JP8z0nVwm7YIp7nzrcav2eoba63+Uw4PoJVnQ0XHEdGui8MMYIku2y79YABCRFz+qz 6Cky+6CQpshzbSPP9Dn1CmSbbUecUFznXHpitspSKhT7SUjj4Otw9tktLfJhvCC8GoRu s27fdZgvre5DjtYagTJq++DtqlVeBt2xSg71mzdUP6coLAUsSUId9VniHzHsZuJeeV8Y WEQUe6sdUtgRRlNeHFUN5Oetj05k00tWkDzDn6cYYdj3g54T5KpI/qGrKNACe3o9m1H2 9bj2Jo1l2HSyPUTRpvSWKzaFZg49y5e8QB786ppNSzM5vprobFSMOkQImB0Zj8DT6fqc vfEg== X-Gm-Message-State: AOAM5311Fz+kkdejyX7vdLNI0RYqL617nhDVUQQsTcXLqBv7JioUO0vl 3H+HicRZ/nKyJeP8aPErzoQ6I5iSt6J9rLtGnk0= X-Google-Smtp-Source: ABdhPJwd1dnNtMuVX2FgogpdGKAYJqSHyBwQI5zoFV2HKwLYYlUD9SMj/pAlzmOebA3v+NSF9Yby0tSjhZ7PsYz/YAQ= X-Received: by 2002:a05:6830:82b:: with SMTP id t11mr2810637ots.319.1632314836721; Wed, 22 Sep 2021 05:47:16 -0700 (PDT) MIME-Version: 1.0 References: <20210819004305.20203-1-deepak.sharma@amd.com> <951c4f8f-30ee-77d3-afb7-46e45c84213d@amd.com> In-Reply-To: From: "Rafael J. Wysocki" Date: Wed, 22 Sep 2021 14:47:05 +0200 Message-ID: Subject: Re: [PATCH] x86/ACPI/State: Optimize C3 entry on AMD CPUs To: "Sharma, Deepak" Cc: "Rafael J. Wysocki" , Deepak Sharma , "Rafael J. Wysocki" , Len Brown , Pavel Machek , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)" , "H. Peter Anvin" , "open list:SUSPEND TO RAM" , "open list:X86 ARCHITECTURE (32-BIT AND 64-BIT)" Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Sep 22, 2021 at 5:50 AM Sharma, Deepak wrote: > > Hi Rafael, > > On 9/1/2021 5:45 AM, Rafael J. Wysocki wrote: > > On Wed, Sep 1, 2021 at 4:14 AM Deepak Sharma wrote: > >> > >> On 8/25/21 11:07 AM, Rafael J. Wysocki wrote: > >>> On Thu, Aug 19, 2021 at 2:43 AM Deepak Sharma wrote: > >>>> AMD CPU which support C3 shares cache. Its not necessary to flush the > >>>> caches in software before entering C3. This will cause performance drop > >>>> for the cores which share some caches. ARB_DIS is not used with current > >>>> AMD C state implementation. So set related flags correctly. > >>>> > >>>> Signed-off-by: Deepak Sharma > >>> Applied as 5.15 material under the edited subject "x86: ACPI: cstate: > >>> Optimize C3 entry on AMD CPUs", thanks! > >> I might need to send subsequent patch for this. Can you please point me > >> to git and branch where this has been merged. > > git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git linux-next > > Still I am not able to see this patch merged on linux-next branch. It was there, but got dropped before the merge window due to the unclear next steps. I'd rather see this resent along with the subsequent patch you were talking about.