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 478E6C433FE for ; Tue, 12 Oct 2021 11:34:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 36338610CE for ; Tue, 12 Oct 2021 11:34:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236194AbhJLLgb (ORCPT ); Tue, 12 Oct 2021 07:36:31 -0400 Received: from mail.kernel.org ([198.145.29.99]:44202 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232665AbhJLLga (ORCPT ); Tue, 12 Oct 2021 07:36:30 -0400 Received: from disco-boy.misterjones.org (disco-boy.misterjones.org [51.254.78.96]) (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 36FB6610C9; Tue, 12 Oct 2021 11:34:29 +0000 (UTC) Received: from sofa.misterjones.org ([185.219.108.64] helo=why.misterjones.org) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1maG37-00GEtZ-Nf; Tue, 12 Oct 2021 12:34:25 +0100 Date: Tue, 12 Oct 2021 12:34:25 +0100 Message-ID: <87fst6pjcu.wl-maz@kernel.org> From: Marc Zyngier To: Josef Johansson Cc: tglx@linutronix.de, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, Rui Salvaterra Subject: Re: [REGRESSION][BISECTED] 5.15-rc1: Broken AHCI on NVIDIA ION (MCP79) In-Reply-To: References: User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM-LB/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL-LB/10.8 EasyPG/1.0.0 Emacs/27.1 (x86_64-pc-linux-gnu) MULE/6.0 (HANACHIRUSATO) MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: josef@oderland.se, tglx@linutronix.de, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, rsalvaterra@gmail.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org On Mon, 11 Oct 2021 19:47:21 +0100, Josef Johansson wrote: > > I've got a late regression to this commit as well, but in the GPU area. > The problem arises when booting it as XEN dom0. What is the behaviour without Xen? We have some special treatment for Xen PV which may or may not have an influence on the behaviour... M. -- Without deviation from the norm, progress is not possible.