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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 66C17C433EF for ; Fri, 15 Jul 2022 03:12:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231877AbiGODM5 (ORCPT ); Thu, 14 Jul 2022 23:12:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38664 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229945AbiGODMz (ORCPT ); Thu, 14 Jul 2022 23:12:55 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B06311C903 for ; Thu, 14 Jul 2022 20:12:54 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 5D3A3B81A73 for ; Fri, 15 Jul 2022 03:12:53 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPS id DEA19C3411C for ; Fri, 15 Jul 2022 03:12:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1657854771; bh=Yl9czywWQjax919EO97/uHT5nGs+0/z8EJkWAog4cbg=; h=From:To:Subject:Date:In-Reply-To:References:From; b=oBJgYYYLL4comjRr4Z/beZWG+E159wuKDPJdd0h5a0/suaTUvKQnxWewxcWA8TAuI /gp2EseMuZU/5azJokW/y1foJJnWZU1y70zCvD18HVCPjhOPZ3lINVAYJxIr23kf2V 7bppudjlipx28MD1JAoh+bqhlkcaAI/1O8NO/H+YM/T9GH4kktno2Z7Ip3G7+TQ9at ZqxGDBUyK2uVBj5q0BQzILuRzzIL3Zcn+CXfU4a+qt+rV3Zeep1TlilggWneUVPWxJ epSZXLnM3+ylOdWZsDB1k1hEWz53JniTPiNFFaoarEjbRN07fiMbh2NqVH9lXuxUj1 6p8MWIFWXN56g== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id C22F4CC13B7; Fri, 15 Jul 2022 03:12:51 +0000 (UTC) From: bugzilla-daemon@kernel.org To: linux-pm@vger.kernel.org Subject: [Bug 216248] [Regression] amd-pstate stops working after [ACPI: CPPC: Check _OSC for flexible address space] Date: Fri, 15 Jul 2022 03:12:51 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Power Management X-Bugzilla-Component: cpufreq X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: mario.limonciello@amd.com X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P1 X-Bugzilla-Assigned-To: linux-pm@vger.kernel.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org https://bugzilla.kernel.org/show_bug.cgi?id=3D216248 --- Comment #1 from Mario Limonciello (AMD) (mario.limonciello@amd.com) --- I believe your CPU should support the MSR approach. It should have been fi= xed by "ACPI: CPPC: Don't require _OSC if X86_FEATURE_CPPC is supported". You = can see in your lscpu output the "cppc" flag is present. That other patch won't matter. That patch was specifically to fix "ACPI: b= us: Set CPPC _OSC bits for all and when CPPC_LIB is supported". A few asks: 1) Does acpi-cpufreq work? Or that's broken too from this commit? 2) Can you please share your full dmesg and an acpidump? 3) If you turn on dynamic debugging for drivers/acpi/cppc_acpi.c do you see "Flexible address space capability not supported"? I would expect yes from that bisect. --=20 You may reply to this email to add a comment. You are receiving this mail because: You are the assignee for the bug.=