From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from h7.fbrelay.privateemail.com (h7.fbrelay.privateemail.com [162.0.218.230]) (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 BD4E981AA8 for ; Sat, 14 Feb 2026 22:17:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=162.0.218.230 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771107474; cv=none; b=XByu6KqsKmDExj8oVEBj7NQNo506luD70puL2heyC+jqpRAvcI/CBdtMuYcWXEj2+mQKEXAZQL2T3tW54EwGoOjXOZsQPZiYhzu6NYdXsp0m5ztxKVhSoHS7R4RjK1xMy76dYIpE59tNtRwK77DsY1nILTcEDAOP7WXfhZSLsYM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771107474; c=relaxed/simple; bh=PFevWCoGXXmx0f8VDCxVZz9uesDIEif04/f27fU0wF0=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=ompcGf4HCTTPd4SRpxE6bssPQtBKuu6dN2clpajFNUW0FX21Cb+cROEGFA/Go3BQ7OMh1CpfkIaH8TWTNcSzgfo08lBzCCelC/1cYikdhOHjIUGgbSbdy+sKyZzb8ZHMGDmoqAmIIDnCZIiVSZp0t0Oz1U9Pukrf9cQybu1PXZ4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=effective-light.com; spf=pass smtp.mailfrom=effective-light.com; arc=none smtp.client-ip=162.0.218.230 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=effective-light.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=effective-light.com Received: from MTA-05-3.privateemail.com (mta-05.privateemail.com [198.54.127.60]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by h7.fbrelay.privateemail.com (Postfix) with ESMTPSA id 4fD3Lw6d73z2xDw for ; Sat, 14 Feb 2026 17:17:44 -0500 (EST) Received: from hal-station (unknown [23.129.64.188]) by mta-05.privateemail.com (Postfix) with ESMTPA id 4fD3L93FwCz3hhTK; Sat, 14 Feb 2026 17:17:05 -0500 (EST) Date: Sat, 14 Feb 2026 17:16:59 -0500 From: Hamza Mahfooz To: Michel =?iso-8859-1?Q?D=E4nzer?= Cc: Mario Limonciello , dri-devel@lists.freedesktop.org, Harry Wentland , Leo Li , Rodrigo Siqueira , Alex Deucher , Christian =?iso-8859-1?Q?K=F6nig?= , David Airlie , Simona Vetter , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Alex Hung , Wayne Lin , Aurabindo Pillai , Ivan Lipski , Timur =?iso-8859-1?Q?Krist=F3f?= , Dominik Kaszewski , amd-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v3 1/2] drm: introduce KMS recovery mechanism Message-ID: References: <20260212230905.688006-1-someguy@effective-light.com> <2e359cd9-0192-44d0-886f-7f93a8b0a4fa@amd.com> <85319290-4027-4eb8-95d1-9009d23f2294@mailbox.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <85319290-4027-4eb8-95d1-9009d23f2294@mailbox.org> On Sat, Feb 14, 2026 at 03:02:49PM +0100, Michel Dänzer wrote: > Why couldn't a full modeset? > As far as I see it the only reasons why we should be timing out is either an interrupt went missing (perhaps due to a race condition in driver code) or hung hardware. In either case, the interrupt associated with the page flip for the current commit is long gone. > In principle it's possible to do (the equivalent of) a modeset with the current state for all CRTCs, no need to do it separately per CRTC. AFAIK that is what the uevent is already doing (unless I'm mistaken).