From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mxout70.expurgate.net (mxout70.expurgate.net [91.198.224.70]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6F4A718DF9D for ; Mon, 9 Mar 2026 07:10:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.198.224.70 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773040214; cv=none; b=NMt5GEDYJKoKJ05yO4C2HOrdoE6yORFATQsNkgfyZrRcJB2+QiOsxT2sWsfkeywv9LbWaqxn/cBN8go7PiRSKYJFuHNwsTrddP1o95cTCuCe6L2whNPyg97jh9HpZ24jYT6fu8mafkGFCW2jIZ5CXerbGMb6nU/iV+5rC/NsV1E= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773040214; c=relaxed/simple; bh=rXp1QS8moIqf607l9ilW8xjJYZWHhpzj0szdx0XiLqo=; h=MIME-Version:Content-Type:Date:From:To:Cc:Subject:In-Reply-To: References:Message-ID; b=mjNtS6wrGVhf6WHEcMUf4L96EhBjG/bsvt7W48/C0hmfqNoJFJ1xs7kpRhoN1X5muXb4ovscAbd/GSGZzrdbpfNW3L1x5YOCwlXVl8wuTGF4KFBu9YccID7Hb4suSE8MXZ5RklZJN8WqVh23kUjhdWsrUebE0jZxBlbCKjKgwt4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=dev.tdt.de; spf=pass smtp.mailfrom=dev.tdt.de; dkim=temperror (0-bit key) header.d=dev.tdt.de header.i=@dev.tdt.de header.b=tN9kpjlo; arc=none smtp.client-ip=91.198.224.70 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=dev.tdt.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=dev.tdt.de Authentication-Results: smtp.subspace.kernel.org; dkim=temperror (0-bit key) header.d=dev.tdt.de header.i=@dev.tdt.de header.b="tN9kpjlo" Received: from [194.37.255.9] (helo=mxout.expurgate.net) by relay.expurgate.net with smtp (Exim 4.92) (envelope-from ) id 1vzUUv-007aoX-6C; Mon, 09 Mar 2026 07:53:49 +0100 Received: from [195.243.126.94] (helo=securemail.tdt.de) by relay.expurgate.net with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1vzUUu-00GFJG-Ia; Mon, 09 Mar 2026 07:53:48 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=dev.tdt.de; s=z1-selector1; t=1773039224; bh=rXp1QS8moIqf607l9ilW8xjJYZWHhpzj0szdx0XiLqo=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=tN9kpjloDHZAc/5OxWBkcwGN6vBbOyZCNEonmfhGP6cNXxxE5eRXCTheinGrtRn/6 mMUrXnkShH7jvMtSk2Il9RX0QhCEBxzcYtvwbK8DqqwJ1YRHCAw8WlQblg9mAlmkgn BQOjNRHqYlNQi44sBouI8GjIzj5FsnXLk2jDtsdwCbdTYviXRHgIrUTIg6O/upS11p z58y3MhWk31GiIeweXahZAI+WUvGq8CWgPcuNsHpEDpnM2eKie9EQlNMuvco53NPNP sWWOhcdQFRtBToY5oe+WD/3UR8xkMgJ1Ahyc/8Tcmi1dMLSqLnQ0xrfG7PIDGko38s WQWRUMCwBKuyw== Received: from securemail.tdt.de (localhost [127.0.0.1]) by securemail.tdt.de (Postfix) with ESMTP id 7DBF4240041; Mon, 9 Mar 2026 07:53:44 +0100 (CET) Received: from mail.dev.tdt.de (unknown [10.2.4.42]) by securemail.tdt.de (Postfix) with ESMTP id 6495D240036; Mon, 9 Mar 2026 07:53:44 +0100 (CET) Received: from mail.dev.tdt.de (localhost [IPv6:::1]) by mail.dev.tdt.de (Postfix) with ESMTP id 85AE423431; Mon, 9 Mar 2026 07:53:40 +0100 (CET) Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Date: Mon, 09 Mar 2026 07:53:40 +0100 From: Martin Schiller To: "Rafael J. Wysocki" Cc: Srinivas Pandruvada , Len Brown , Viresh Kumar , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, Florian Eckert Subject: Re: [PATCH 0/2] x86/cpu: P-state support for Lightning Mountain Organization: TDT AG In-Reply-To: References: <20260306-cpufreq_lgm-v1-0-47f104aed7c2@dev.tdt.de> Message-ID: <3e828b47bacf84ca8d19a024ac71778c@dev.tdt.de> X-Sender: ms@dev.tdt.de User-Agent: Roundcube Webmail/1.3.17 Content-Transfer-Encoding: quoted-printable X-purgate-type: clean X-purgate: clean X-purgate-ID: 151534::1773039228-E651E769-73B51FFA/0/0 On 2026-03-06 18:59, Rafael J. Wysocki wrote: > On Fri, Mar 6, 2026 at 9:27=E2=80=AFAM Martin Schiller = wrote: >>=20 >> This patch set contains 2 commits to get P-state support for Intel / >> MaxLinear Lightning Mountain. The first adds the needed code to the >> intel_pstate driver. The second adds a workaround to the x86/cpu >> subsystem to enable EIST on all cpus. >=20 > Can you please combine the patches? >=20 > Or does the first one work just fine without the second one? Well, the first patch can basically be applied without the second one, but then frequency stepping will only work on the first cpu core. I split the two changes because they apply to different parts of the kernel sources. But you're probably right, and it makes sense to combine the two patches. BTW: The original code from the MaxLinear SDK enables EIST in the intel_pstate driver, but I don't think that's the right place for it.