From patchwork Fri Jan 5 18:46:13 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Osipenko X-Patchwork-Id: 13512468 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 D69EBC4707B for ; Fri, 5 Jan 2024 18:47:20 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 46F3210E68B; Fri, 5 Jan 2024 18:47:19 +0000 (UTC) Received: from madrid.collaboradmins.com (madrid.collaboradmins.com [46.235.227.194]) by gabe.freedesktop.org (Postfix) with ESMTPS id 33FAC10E686 for ; Fri, 5 Jan 2024 18:47:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1704480435; bh=YBkVn5jKdYvc4x1kT23ZC29JJbOYH68uDMV2t2TN/6Y=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=QgOl2UJs08qDGmwrciCZCNsVoDOox4BtpEAkEHtlwtVBVrIZuNVP8ke8kqwz1D+iq AkWrKDiRFjWApzsL2X/+2iSrDEy++LL4hfhOJb+R9UM7iHnnAjrK8IVR0lDImUZUnl +3pGTpxWS787PSte07Ad+jmiINWOknqI7KiATFYTyOy4vrAua1N9PzA44bP4um745V crV6/5sZa24o5ti+d1DL//yfy3+Ukn7VOkRt/dr0NM+VYPH7OBYwSUZYVD64hmfq8U dN7fcx2Jw29ut3l0oZs6g27aAD49iE2Am2vgdA/wnPfEpSH3Mnxyl+Vy96sYY5H6g4 X1wP/7EUuD0XQ== Received: from workpc.. (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: dmitry.osipenko) by madrid.collaboradmins.com (Postfix) with ESMTPSA id A5ACB378205F; Fri, 5 Jan 2024 18:47:13 +0000 (UTC) From: Dmitry Osipenko To: David Airlie , Gerd Hoffmann , Gurchetan Singh , Chia-I Wu , Daniel Vetter , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , =?utf-8?q?Christian_K=C3=B6nig?= , Qiang Yu , Steven Price , Boris Brezillon , Emma Anholt , Melissa Wen Subject: [PATCH v19 19/30] drm/virtio: Explicitly get and put drm-shmem pages Date: Fri, 5 Jan 2024 21:46:13 +0300 Message-ID: <20240105184624.508603-20-dmitry.osipenko@collabora.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240105184624.508603-1-dmitry.osipenko@collabora.com> References: <20240105184624.508603-1-dmitry.osipenko@collabora.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kernel@collabora.com, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, virtualization@lists.linux-foundation.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" We're moving away from implicit get_pages() that is done by get_pages_sgt() to simplify the refcnt handling. Drivers will have to pin pages while they use sgt. VirtIO-GPU doesn't support shrinker, hence pages are pinned and sgt is valid as long as pages' use-count > 0. Reviewed-by: Boris Brezillon Signed-off-by: Dmitry Osipenko --- drivers/gpu/drm/virtio/virtgpu_object.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/virtio/virtgpu_object.c b/drivers/gpu/drm/virtio/virtgpu_object.c index c7e74cf13022..e58528c562ef 100644 --- a/drivers/gpu/drm/virtio/virtgpu_object.c +++ b/drivers/gpu/drm/virtio/virtgpu_object.c @@ -67,6 +67,7 @@ void virtio_gpu_cleanup_object(struct virtio_gpu_object *bo) virtio_gpu_resource_id_put(vgdev, bo->hw_res_handle); if (virtio_gpu_is_shmem(bo)) { + drm_gem_shmem_put_pages(&bo->base); drm_gem_shmem_free(&bo->base); } else if (virtio_gpu_is_vram(bo)) { struct virtio_gpu_object_vram *vram = to_virtio_gpu_vram(bo); @@ -196,9 +197,13 @@ int virtio_gpu_object_create(struct virtio_gpu_device *vgdev, return PTR_ERR(shmem_obj); bo = gem_to_virtio_gpu_obj(&shmem_obj->base); + ret = drm_gem_shmem_get_pages(shmem_obj); + if (ret) + goto err_free_gem; + ret = virtio_gpu_resource_id_get(vgdev, &bo->hw_res_handle); if (ret < 0) - goto err_free_gem; + goto err_put_pages; bo->dumb = params->dumb; @@ -243,6 +248,8 @@ int virtio_gpu_object_create(struct virtio_gpu_device *vgdev, kvfree(ents); err_put_id: virtio_gpu_resource_id_put(vgdev, bo->hw_res_handle); +err_put_pages: + drm_gem_shmem_put_pages(shmem_obj); err_free_gem: drm_gem_shmem_free(shmem_obj); return ret;