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[129.46.96.20]) by smtp.gmail.com with ESMTPSA id 46e09a7af769-7d59785d8d5sm9311790a34.17.2026.03.03.03.30.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 03 Mar 2026 03:30:41 -0800 (PST) From: Yuvraj Sakshith To: mst@redhat.com, david@kernel.org Cc: kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, longli@microsoft.com, jasowang@redhat.com, xuanzhuo@linux.alibaba.com, eperezma@redhat.com, akpm@linux-foundation.org, lorenzo.stoakes@oracle.com, Liam.Howlett@oracle.com, vbabka@suse.cz, rppt@kernel.org, surenb@google.com, mhocko@suse.com, jackmanb@google.com, hannes@cmpxchg.org, ziy@nvidia.com, linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org, virtualization@lists.linux.dev, linux-mm@kvack.org Subject: [PATCH v4 4/5] mm/page_reporting: change PAGE_REPORTING_ORDER_UNSPECIFIED to -1 Date: Tue, 3 Mar 2026 03:30:31 -0800 Message-Id: <20260303113032.3008371-5-yuvraj.sakshith@oss.qualcomm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260303113032.3008371-1-yuvraj.sakshith@oss.qualcomm.com> References: <20260303113032.3008371-1-yuvraj.sakshith@oss.qualcomm.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-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzAzMDA4OSBTYWx0ZWRfX61tvof/Ey/kd dlaPg4QoqgN0s0Xp1RQ4HNxO82h7n1tCiPeAZMIBhCghBV2E55R5+UGr0zHT3raFaVyRxWblA7S iakRx0iwkpNMAi20lPMZUm9HLZc/zrIu4jFdA42AJd8ddaVyR0t5vl2WO3sHfnV8M5hgNkmLdC9 XIJs8QDOCE29XezXuEgzyqtjaUgcJoB5L2iTIjHUGxjhpZz2NRBig2Im5djTPqfPFf90TPveC7K 9FlcyOTEtYI2hUCrtdLQhZuY+7QRJyklp3lEypDOFLtmyA3yx+9bMEywySTPA03JEVVOPk501+O C/N7XMeut/14KK52hFeh+HlKKQmdyhrA5rzZJwBLIHMdzrSXfLJEMEipMg6AjGcn8HenaCtaW9E 8g+3C/zi4AhW39iA8zZ8ol+9lNPZbZYHyOUNhTe1duU+3k8pv2uVzo+3vruo2r0mP5SjfgdyBNP QAkTWYmdLySHSbU+Gsw== X-Authority-Analysis: v=2.4 cv=MuhfKmae c=1 sm=1 tr=0 ts=69a6c662 cx=c_pps a=4ztaESFFfuz8Af0l9swBwA==:117 a=ouPCqIW2jiPt+lZRy3xVPw==:17 a=Yq5XynenixoA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=_K5XuSEh1TEqbUxoQ0s3:22 a=VwQbUJbxAAAA:8 a=EUspDBNiAAAA:8 a=c6WgzpUFESAvjm-ZtrYA:9 a=TPnrazJqx2CeVZ-ItzZ-:22 X-Proofpoint-ORIG-GUID: zi22LqL0j30gOP470nJzfvThkdJsee3T X-Proofpoint-GUID: zi22LqL0j30gOP470nJzfvThkdJsee3T X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-03-02_05,2026-03-03_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 phishscore=0 bulkscore=0 lowpriorityscore=0 adultscore=0 impostorscore=0 suspectscore=0 malwarescore=0 clxscore=1015 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2602130000 definitions=main-2603030089 Content-Type: text/plain; charset="utf-8" PAGE_REPORTING_ORDER_UNSPECIFIED is now set to zero. This means, pages of order zero cannot be reported to a client/driver -- as zero is used to signal a fallback to MAX_PAGE_ORDER. Change PAGE_REPORTING_ORDER_UNSPECIFIED to (-1), so that zero can be used as a valid order with which pages can be reported. Acked-by: David Hildenbrand (Arm) Signed-off-by: Yuvraj Sakshith --- include/linux/page_reporting.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/page_reporting.h b/include/linux/page_reporting.h index d1886c657..9d4ca5c21 100644 --- a/include/linux/page_reporting.h +++ b/include/linux/page_reporting.h @@ -7,7 +7,7 @@ =20 /* This value should always be a power of 2, see page_reporting_cycle() */ #define PAGE_REPORTING_CAPACITY 32 -#define PAGE_REPORTING_ORDER_UNSPECIFIED 0 +#define PAGE_REPORTING_ORDER_UNSPECIFIED -1 =20 struct page_reporting_dev_info { /* function that alters pages to make them "reported" */ --=20 2.34.1