From nobody Sat Oct 4 00:20:05 2025 Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [45.249.212.188]) (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 179142F6185; Fri, 22 Aug 2025 10:39:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.188 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755859151; cv=none; b=ojU1K5tFnWDKdM2aeyRxCxyPR3KfEoe+5SrqEZfXD8KnLwy7TVsIKcPbyaZk52AJAVrsSxMNH1CETJBZfT/vCgR/OGPbagpcvafKKQcz1TewnfDI8FguOZwKvzirrwjNSwApWlFjfeswHcPgjRniHhH63JhOOv+ZkYVS35hN1Cg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755859151; c=relaxed/simple; bh=dTmHS+SXwmigGt+qIm+6F1mMEbPr3KsBXmdDhWkQLv8=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=lHtOCDVDlOotU6JjI1nZbpSVx+FPOhxshyS2i768BLCld/b8F4zo4hXbVE1wLbU85idxTfKTd8RjCRcKi0s6l3Bauz4OMmPoj5fKQRnVQ90b3NpFSbH+0XxzkvacKQU8KRuiZH6Wonb5u+hxxX8yvREy9byW8GuWvniPuxdx4kU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=45.249.212.188 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.19.88.194]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4c7c4k6LskzPqWq; Fri, 22 Aug 2025 18:34:30 +0800 (CST) Received: from dggemv705-chm.china.huawei.com (unknown [10.3.19.32]) by mail.maildlp.com (Postfix) with ESMTPS id D3534140257; Fri, 22 Aug 2025 18:39:06 +0800 (CST) Received: from kwepemq200001.china.huawei.com (7.202.195.16) by dggemv705-chm.china.huawei.com (10.3.19.32) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Fri, 22 Aug 2025 18:39:06 +0800 Received: from localhost.huawei.com (10.90.31.46) by kwepemq200001.china.huawei.com (7.202.195.16) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Fri, 22 Aug 2025 18:39:06 +0800 From: Chenghai Huang To: , , CC: , , , , , , , Subject: [PATCH 3/4] uacce: implement mremap in uacce_vm_ops to return -EPERM Date: Fri, 22 Aug 2025 18:39:03 +0800 Message-ID: <20250822103904.3776304-4-huangchenghai2@huawei.com> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20250822103904.3776304-1-huangchenghai2@huawei.com> References: <20250822103904.3776304-1-huangchenghai2@huawei.com> 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 X-ClientProxiedBy: kwepems200002.china.huawei.com (7.221.188.68) To kwepemq200001.china.huawei.com (7.202.195.16) Content-Type: text/plain; charset="utf-8" From: Yang Shen The current uacce_vm_ops does not support the mremap operation of vm_operations_struct. Implement .mremap to return -EPERM to remind users Fixes: 015d239ac014 ("uacce: add uacce driver") Signed-off-by: Yang Shen Signed-off-by: Chenghai Huang --- drivers/misc/uacce/uacce.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/misc/uacce/uacce.c b/drivers/misc/uacce/uacce.c index 6a38809ca819..531a24145ba4 100644 --- a/drivers/misc/uacce/uacce.c +++ b/drivers/misc/uacce/uacce.c @@ -214,8 +214,14 @@ static void uacce_vma_close(struct vm_area_struct *vma) } } =20 +static int uacce_vma_mremap(struct vm_area_struct *area) +{ + return -EPERM; +} + static const struct vm_operations_struct uacce_vm_ops =3D { .close =3D uacce_vma_close, + .mremap =3D uacce_vma_mremap, }; =20 static int uacce_fops_mmap(struct file *filep, struct vm_area_struct *vma) --=20 2.33.0