From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from madrid.collaboradmins.com (madrid.collaboradmins.com [46.235.227.194]) (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 1EF8115CD6C; Wed, 29 May 2024 07:32:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=46.235.227.194 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716967942; cv=none; b=nNNbMOO22u/dUBVXdcn8+HlNbTw1aYbmIL60DGB6I3i1zYx5mZJSIsXIpZVm6yfVmsWmIey+LF3JjU2QOowBSEcibevqcvdVMkFZtb7c9TQjcQP9jY9zVJowmYXyZ6HAneK4S+OqqcYgY5El19+aEIB2YySoujuCznMg1BOgUa0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716967942; c=relaxed/simple; bh=cADutWs2Dsx1o9inKNPez5xFnY+sOuOUeUDqJ44drFk=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=gDONJu1wkrfmtMV1xYr9zuk7MlnNxHFIEyrNZfG0QQGn6uQSk4jlVSYzDMUIZTCEeUxIOJbeTDTay1xxcymskNePcvyiiA4FrvLP4yWnti5Uc5tm/Usbqb1B+LBrJElqaVM96xHhlQDQbqz0ReiXT77GkC0hMYRTQbkKqqbaCE0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b=BrZRV001; arc=none smtp.client-ip=46.235.227.194 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b="BrZRV001" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1716967939; bh=cADutWs2Dsx1o9inKNPez5xFnY+sOuOUeUDqJ44drFk=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=BrZRV001CJRtCqhATXy9C/FXVikr+5BdllJGZ2rStBbfQk7E4RecsGhHyLUYYTaIX DdX1+wJBWQFYV5tjrx9nrd9tQQJymjFfZSy6VjmJioLWGMpiRHvVXQcCdNqEjHg2nc 5Ofxh4snXgHT9f0visanV+QcHJiyJBN05ySKzTc3bXeWPSMtlxnPKH6PZ80J06d8dh S9WP60/wwTTEDRUGmWqBV3OvWMlJ/QKPqS3N9XUPm0tVd+j32q0IXhPWDAzVjl0jg6 RjMI6caeXqeU15q9tG1E37Yw3kWZXMAASFBGSEMNh/yZchKQ5k8TQK7AdofrfG5BSK Nino7JsVpA7dA== Received: from localhost (cola.collaboradmins.com [195.201.22.229]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: bbrezillon) by madrid.collaboradmins.com (Postfix) with ESMTPSA id 0DFB63780627; Wed, 29 May 2024 07:32:18 +0000 (UTC) Date: Wed, 29 May 2024 09:32:16 +0200 From: Boris Brezillon To: =?UTF-8?B?QWRyacOhbg==?= Larumbe Cc: Rob Herring , Steven Price , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , Sumit Semwal , Christian =?UTF-8?B?S8O2bmln?= , Dmitry Osipenko , Zack Rusin , kernel@collabora.com, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linaro-mm-sig@lists.linaro.org Subject: Re: [PATCH v4 0/3] drm: Fix dma_resv deadlock at drm object pin time Message-ID: <20240529093216.6640d05d@collabora.com> In-Reply-To: <20240523113236.432585-1-adrian.larumbe@collabora.com> References: <20240523113236.432585-1-adrian.larumbe@collabora.com> Organization: Collabora X-Mailer: Claws Mail 4.2.0 (GTK 3.24.41; x86_64-redhat-linux-gnu) 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=UTF-8 Content-Transfer-Encoding: quoted-printable On Thu, 23 May 2024 12:32:16 +0100 Adri=C3=A1n Larumbe wrote: > This is v4 of https://lore.kernel.org/lkml/20240521181817.097af5e1@collab= ora.com/T/ >=20 > The goal of this patch series is fixing a deadlock upon locking the dma r= eservation > of a DRM gem object when pinning it, at a prime import operation. >=20 > Changelog: > v3: > - Split driver fixes into separate commits for Panfrost and Lima > - Make drivers call drm_gem_shmem_pin_locked instead of drm_gem_shmem_ob= ject_pin > - Improved commit message for first patch to explain why dma resv lockin= g in the=20 > pin callback is no longer necessary. > v2: > - Removed comment explaining reason why an already-locked > pin function replaced the locked variant inside Panfrost's > object pin callback. > - Moved already-assigned attachment warning into generic > already-locked gem object pin function >=20 >=20 > Adri=C3=A1n Larumbe (3): > drm/panfrost: Fix dma_resv deadlock at drm object pin time > drm/lima: Fix dma_resv deadlock at drm object pin time > drm/gem-shmem: Add import attachment warning to locked pin function Queued to drm-misc-fixes. Thanks! Boris