From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 9DF0D3A4537 for ; Thu, 16 Apr 2026 15:26:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776353177; cv=none; b=OqzWX2qfkKQbqSr1osDFNnV1OeqqsRzwExrhaQEGNghe2ctaWlSeDJf1vl7xV9Xe3tJxkD0vWVUMbVf5cx5/GX1aUp8JatQvorsaCYAZqdPSVTQz0JjvEvqHJLk/uvf5l7Qd60FgFlRZjVPBIWue+hSsV+BeVcjgnywLdbQ2Kz0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776353177; c=relaxed/simple; bh=Yrvlbwu3X4ciGbQvlk+Y4EOaweifB5ufEkrLM2asoMA=; h=Mime-Version:Content-Type:Date:Message-Id:From:Subject:Cc:To: References:In-Reply-To; b=u1gsb2PvXZvHMFUU3N07moVIY9Z/PA/YNhBMtoBOWd6U+VId+nMDP8f7K2URktMlcJtI4p925dSeq28JeIQ5AqgBnv/KeVIpoEqjl5qBj89HWX1da/Qy6QNc8i47+gUVMFKapD1tIU9wZbStF4NN8XjDapLg9WvujFXmP0mAa18= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=M6VOooPf; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="M6VOooPf" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C6933C2BCB3; Thu, 16 Apr 2026 15:26:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1776353177; bh=Yrvlbwu3X4ciGbQvlk+Y4EOaweifB5ufEkrLM2asoMA=; h=Date:From:Subject:Cc:To:References:In-Reply-To:From; b=M6VOooPflNCwguMNFh7xJU70TLIHt7S4D8NjkG632qJfZ1pNOypUWxZRKwzh8YsCe aEdHjCT7Dk6vcOS5TUzM3Pylf2zqzf4Zgewtnjw2YkYTE3wfCQX9YiwQxDD4HXpXCQ PAC8wFqLHxwKZ7hpF5JIqb+UT6hpZP0PRbWankGbJNYqlggiZrW+pk5+FFzyLbXng+ 7J4L0oR+LwPbXE1fVBvcAakrrDeSaKKDted+dRB0nQoq9yjNK51TPIQ3OfQeJD9S+q u3fEXeMy0npboA0bo434q81CYLklHkyUrfg4UklBNjrGsL1r6VgfkQY5zivOHW1NIm vlGsTgpJsc07g== Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Date: Thu, 16 Apr 2026 17:26:14 +0200 Message-Id: From: "Danilo Krummrich" Subject: Re: [PATCH] drm/gpuvm: take refcount on DRM device Cc: "Matthew Brost" , =?utf-8?q?Thomas_Hellstr=C3=B6m?= , "Maarten Lankhorst" , "Maxime Ripard" , "Thomas Zimmermann" , , To: "Alice Ryhl" References: <20260416-gpuvm-drm-dev-get-v1-1-f3bc06571e73@google.com> In-Reply-To: <20260416-gpuvm-drm-dev-get-v1-1-f3bc06571e73@google.com> On Thu Apr 16, 2026 at 3:10 PM CEST, Alice Ryhl wrote: > Currently GPUVM relies on the owner implicitly holding a refcount to the > drm device, and it does not implicitly take a refcount on the drm > device. This design is error-prone, so take a refcount on the device. > > Suggested-by: Danilo Krummrich > Signed-off-by: Alice Ryhl Fixes: 546ca4d35dcc ("drm/gpuvm: convert WARN() to drm_WARN() variants")