From patchwork Tue Nov 3 20:36:56 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 317101 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=-9.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 DD987C388F9 for ; Tue, 3 Nov 2020 21:05:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9997D20757 for ; Tue, 3 Nov 2020 21:05:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1604437555; bh=/T3SJ1buyA6YHXT6XGq5baauNt1qHSf3vwSNRPlvzJw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=fOO1Ch1aoITDPvCGVcUd3moDJCa+MG6WJSGzxEizQows+z4V/70/kEttGYNbkhhzY yDIGu9LaNLDIqMNhRPsafphVB9t3CtMLhS8USxKTEcfJQZrAVhiZCWR8HzQTZ5rdkp tur0whU3Sn5y/DbARtSL85z1a4Woi8gkO1tHt3jo= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388082AbgKCVFx (ORCPT ); Tue, 3 Nov 2020 16:05:53 -0500 Received: from mail.kernel.org ([198.145.29.99]:44562 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387854AbgKCVFw (ORCPT ); Tue, 3 Nov 2020 16:05:52 -0500 Received: from localhost (83-86-74-64.cable.dynamic.v4.ziggo.nl [83.86.74.64]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 568E320658; Tue, 3 Nov 2020 21:05:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1604437551; bh=/T3SJ1buyA6YHXT6XGq5baauNt1qHSf3vwSNRPlvzJw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=oknv5r2mGmr5J+zLQEAxwKn03vCyawv5FZtn50v/gxLMtYYgSKWOilrNTcooDNgqR aZNN7yMYn1Tiau2ZMUhVh/OyngCX/EZPDy7qhZFqQPyMpxsHEtoUbxkcCXfZCr7Bb4 BtlDhd/Jj8Aoo7RVaXFND7uFAGb2myr7qs5dAgbU= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Wei Huang , "Rafael J. Wysocki" Subject: [PATCH 4.19 124/191] acpi-cpufreq: Honor _PSD table setting on new AMD CPUs Date: Tue, 3 Nov 2020 21:36:56 +0100 Message-Id: <20201103203244.849634150@linuxfoundation.org> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201103203232.656475008@linuxfoundation.org> References: <20201103203232.656475008@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Wei Huang commit 5368512abe08a28525d9b24abbfc2a72493e8dba upstream. acpi-cpufreq has a old quirk that overrides the _PSD table supplied by BIOS on AMD CPUs. However the _PSD table of new AMD CPUs (Family 19h+) now accurately reports the P-state dependency of CPU cores. Hence this quirk needs to be fixed in order to support new CPUs' frequency control. Fixes: acd316248205 ("acpi-cpufreq: Add quirk to disable _PSD usage on all AMD CPUs") Signed-off-by: Wei Huang [ rjw: Subject edit ] Cc: 3.10+ # 3.10+ Signed-off-by: Rafael J. Wysocki Signed-off-by: Greg Kroah-Hartman --- drivers/cpufreq/acpi-cpufreq.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/drivers/cpufreq/acpi-cpufreq.c +++ b/drivers/cpufreq/acpi-cpufreq.c @@ -701,7 +701,8 @@ static int acpi_cpufreq_cpu_init(struct cpumask_copy(policy->cpus, topology_core_cpumask(cpu)); } - if (check_amd_hwpstate_cpu(cpu) && !acpi_pstate_strict) { + if (check_amd_hwpstate_cpu(cpu) && boot_cpu_data.x86 < 0x19 && + !acpi_pstate_strict) { cpumask_clear(policy->cpus); cpumask_set_cpu(cpu, policy->cpus); cpumask_copy(data->freqdomain_cpus,