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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 210ADC44501 for ; Mon, 6 Jul 2026 12:20:32 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B4A0810E386; Mon, 6 Jul 2026 12:20:31 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; secure) header.d=linutronix.de header.i=@linutronix.de header.b="yYRL2aYI"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="wNuj/vtn"; dkim-atps=neutral Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) by gabe.freedesktop.org (Postfix) with ESMTPS id 89B6310E386; Mon, 6 Jul 2026 12:20:29 +0000 (UTC) Date: Mon, 6 Jul 2026 14:20:26 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1783340427; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=vwgjeZEUy5xLROQXQp8bFHb+5LD1aSG7+FqAwA2PMAE=; b=yYRL2aYIO5A/bd/VRkeD8QrEcQQeXQSdAzN8qmrIOkPVxNBp3W4LGOmqfCC0AvtjkBPqTv /Ao3NYub2PU7IOLCbycBo0BZ1UG+6l6fHkdrVMv5RXgr7puL1vDBQdRB97rXxIho+VWh8y 5GgpdfiU+INESWsgTAo6Yi6EEUk0zVvjPnbCO2893LRm967dYDlpkgXe/u3d/VAUSkDCYi /K1ZMrAdhNPVGRbAoSuq0GSeqbeAQVHi/Uw3sBu646548EWBYXuvH7wEXQ5MrMTxHWmHa8 dW+SgniCH6ZD0u26+KMIPOJS43CpqmT8kcxZlylOhaEzWkLALoeWXSPR+u+wvg== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1783340427; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=vwgjeZEUy5xLROQXQp8bFHb+5LD1aSG7+FqAwA2PMAE=; b=wNuj/vtnG92JmVN3V2MZUGJfyzRhJjIPLenm9RnHqjhdCukEx0dkqzFYnkUx/oGiXjhApm u0XmQuXCSBKdAvAA== From: Sebastian Andrzej Siewior To: Maarten Lankhorst Cc: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: Re: [PATCH v4 0/7] drm/i915: All fixes to make i915 work well with PREEMPT_RT. Message-ID: <20260706122026.IJAiyhhw@linutronix.de> References: <20260706114823.752313-1-dev@lankhorst.se> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20260706114823.752313-1-dev@lankhorst.se> X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" On 2026-07-06 13:48:16 [+0200], Maarten Lankhorst wrote: > All fixes to make the core i915 module (without display) working correctly on > PREEMPT_RT. > > Some fixes are still needed, as the selftests still fail. But otherwise the > test results were looking good on PREEMPT_RT. > > It looks like the patch that added a spinlock caused a regression on !PREEMPT_RT, > and may even have caused similar test failures on PREEMPT_RT, so to fix it > I removed RCU entirely, and converted to a locked implementation instead. > > This time at least, i915 live selftests pass on !PREEMPRT_RT for at least 1 machine > with same config as CI. I saw the version counter overflowed and is at 4 here. I appreciate all the work. May I ask how are things? Sebastian