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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7E42EC433F5 for ; Wed, 29 Sep 2021 16:07:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6536861504 for ; Wed, 29 Sep 2021 16:07:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1343809AbhI2QIr (ORCPT ); Wed, 29 Sep 2021 12:08:47 -0400 Received: from mail.kernel.org ([198.145.29.99]:54570 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1346064AbhI2QHd (ORCPT ); Wed, 29 Sep 2021 12:07:33 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 62F1161216; Wed, 29 Sep 2021 16:05:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1632931552; bh=fNNNxYHWQEEd+3svnB573Ub1aoDLkCmetUDrutXYuG4=; h=Date:From:To:Cc:Subject:In-Reply-To:From; b=a3lb0s0JUVDnmqe/xWSvr5ySGESDD2phU80Pk4SP+kUHOgi5kOarzDq3hQh+oElF2 yp8h1wAaM8+5SVAwPsB+w5HYfiw/X21NtJIehwNTcQkQwyBEAD7zTUl3Sb6q5PEomj h4yflU/w+5tdYrBH5SSKVFdVTd2qK79WQ+IHW4OG3JObV2FD4yhUZ2YjBoZjaOmo7y JJ4i+qoRtVT305vk3mE5YGSkepVmImZXlkO4EvaUeN8EWlo4ML19/iFW3D28Vgsryf sGy54O9aX8iSfFpPdo5Wpm56kOcfJGvQdpIZGlwSU0bw/t5r0wGL0lJup2OtPzxSR4 jvajW2ZPk8nHw== Date: Wed, 29 Sep 2021 11:05:50 -0500 From: Bjorn Helgaas To: Jakub Kicinski Cc: x86@kernel.org, jose.souza@intel.com, hpa@zytor.com, bp@alien8.de, mingo@redhat.com, tglx@linutronix.de, kai.heng.feng@canonical.com, bhelgaas@google.com, linux-pci@vger.kernel.org, rudolph@fb.com, xapienz@fb.com, bmilton@fb.com, paulmck@kernel.org, stable@vger.kernel.org Subject: Re: [PATCH v2] x86/intel: Disable HPET on another Intel Coffee Lake platform Message-ID: <20210929160550.GA773748@bhelgaas> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210929061107.243699c2@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com> Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org On Wed, Sep 29, 2021 at 06:11:07AM -0700, Jakub Kicinski wrote: > On Thu, 16 Sep 2021 19:46:48 -0700 Jakub Kicinski wrote: > > My Lenovo T490s with i7-8665U had been marking TSC as unstable > > since v5.13, resulting in very sluggish desktop experience... > > Where do we stand? Waiting for tglx to refactor PC10 detection and use > that, or just review delay? >From my point of view, this is an x86 issue, not a PCI one, so I'll defer to the x86 folks. > > +++ b/arch/x86/kernel/early-quirks.c > > @@ -716,6 +716,8 @@ static struct chipset early_qrk[] __initdata = { > > PCI_CLASS_BRIDGE_HOST, PCI_ANY_ID, 0, force_disable_hpet}, > > { PCI_VENDOR_ID_INTEL, 0x3e20, > > PCI_CLASS_BRIDGE_HOST, PCI_ANY_ID, 0, force_disable_hpet}, > > + { PCI_VENDOR_ID_INTEL, 0x3e34, > > + PCI_CLASS_BRIDGE_HOST, PCI_ANY_ID, 0, force_disable_hpet}, > > { PCI_VENDOR_ID_INTEL, 0x3ec4, > > PCI_CLASS_BRIDGE_HOST, PCI_ANY_ID, 0, force_disable_hpet}, > > { PCI_VENDOR_ID_INTEL, 0x8a12, >