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McKenney" , Matthew Wilcox , David Rientjes , Axel Rasmussen , Suren Baghdasaryan , Vlastimil Babka , Rik van Riel , Peter Zijlstra Subject: [PATCH v3 33/66] drivers/tee/optee: Use maple tree iterators for __check_mem_type() Thread-Topic: [PATCH v3 33/66] drivers/tee/optee: Use maple tree iterators for __check_mem_type() Thread-Index: AQHXuYih3D0A8efHNUG/VTJakzWchA== Date: Tue, 5 Oct 2021 01:30:50 +0000 Message-ID: <20211005012959.1110504-34-Liam.Howlett@oracle.com> References: <20211005012959.1110504-1-Liam.Howlett@oracle.com> In-Reply-To: <20211005012959.1110504-1-Liam.Howlett@oracle.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: git-send-email 2.30.2 authentication-results: lists.infradead.org; dkim=none (message not signed) header.d=none;lists.infradead.org; dmarc=none action=none header.from=oracle.com; x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 49e94cc4-8e20-430b-9124-08d9879fd600 x-ms-traffictypediagnostic: BLAPR10MB5044: x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:843; 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charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: oracle.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: BL0PR10MB3011.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 49e94cc4-8e20-430b-9124-08d9879fd600 X-MS-Exchange-CrossTenant-originalarrivaltime: 05 Oct 2021 01:30:50.4340 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 4e2c6054-71cb-48f1-bd6c-3a9705aca71b X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: 8gLGODZqnnL65+QqdAq+cCTS1R1vtMHNEW/uRrwcO+aIMaMn1Ob6zwSckKfhgR5186n21kPCe+5pAicBSdeAiw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: BLAPR10MB5044 X-Proofpoint-Virus-Version: vendor=nai engine=6300 definitions=10127 signatures=668683 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxscore=0 mlxlogscore=999 adultscore=0 bulkscore=0 suspectscore=0 malwarescore=0 spamscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2109230001 definitions=main-2110050007 X-Proofpoint-GUID: 9TU6TS69197eViNjA9d4p2yzHDr57OJj X-Proofpoint-ORIG-GUID: 9TU6TS69197eViNjA9d4p2yzHDr57OJj Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: "Liam R. Howlett" Signed-off-by: Liam R. Howlett --- drivers/tee/optee/call.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) diff --git a/drivers/tee/optee/call.c b/drivers/tee/optee/call.c index 945f03da0223..071ff5d9c059 100644 --- a/drivers/tee/optee/call.c +++ b/drivers/tee/optee/call.c @@ -582,11 +582,18 @@ static bool is_normal_memory(pgprot_t p) =20 static int __check_mem_type(struct vm_area_struct *vma, unsigned long end) { - while (vma && is_normal_memory(vma->vm_page_prot)) { - if (vma->vm_end >=3D end) - return 0; - vma =3D vma->vm_next; + MA_STATE(mas, &vma->vm_mm->mm_mt, vma->vm_start, vma->vm_start); + + + rcu_read_lock(); + mas_for_each(&mas, vma, end) { + if (!is_normal_memory(vma->vm_page_prot)) + break; } + rcu_read_unlock(); + + if (!vma) + return 0; =20 return -EINVAL; } --=20 2.30.2