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Tue, 09 Dec 2025 21:31:16 +0000 (GMT) Received: from pps.filterd (iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com [127.0.0.1]) by iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com (8.18.1.2/8.18.1.2) with ESMTP id 5B9JiBFc039896; Tue, 9 Dec 2025 21:31:15 GMT Received: from localhost.localdomain (ca-dev80.us.oracle.com [10.211.9.80]) by iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com (PPS) with ESMTP id 4avaxkdsa6-1; Tue, 09 Dec 2025 21:31:15 +0000 From: Dongli Zhang To: virtualization@lists.linux.dev Cc: david@kernel.org, jasowang@redhat.com, xuanzhuo@linux.alibaba.com, eperezma@redhat.com, linux-kernel@vger.kernel.org Subject: [PATCH 1/1] virtio_balloon: do not set pr_dev_info.report unconditionally Date: Tue, 9 Dec 2025 13:23:11 -0800 Message-ID: <20251209212311.64885-1-dongli.zhang@oracle.com> X-Mailer: git-send-email 2.43.5 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.100.49 definitions=2025-12-09_04,2025-12-09_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxscore=0 bulkscore=0 phishscore=0 suspectscore=0 spamscore=0 mlxlogscore=919 adultscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2510240000 definitions=main-2512090166 X-Authority-Analysis: v=2.4 cv=YJaSCBGx c=1 sm=1 tr=0 ts=69389524 b=1 cx=c_pps a=qoll8+KPOyaMroiJ2sR5sw==:117 a=qoll8+KPOyaMroiJ2sR5sw==:17 a=wP3pNCr1ah4A:10 a=VkNPw1HP01LnGYTKEx00:22 a=yPCof4ZbAAAA:8 a=3oW8Q8UaqLbxhVEU8zwA:9 cc=ntf awl=host:12099 X-Proofpoint-GUID: 77MIoY8kOrSTjYSEVDH_TVlOjHMm1987 X-Proofpoint-ORIG-GUID: 77MIoY8kOrSTjYSEVDH_TVlOjHMm1987 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMjA5MDE2NyBTYWx0ZWRfX1xHeL7vW5An6 2vumDWA8FVgveGegejzqBYPGoIcmKbkvaaMW2+vN8+TfxXkO9LFNCTgdEk8zbgr6e3ANnFdPD9l CYoi4fVz2O1nzhpyeotht67YIAVGCFTy4+bexUhWk2ch6AH3AUJjss6zpL6CP+TYwaC9ECGrCHK +S8HNjEuv9p7jHTiotO2K6VbCO4PWyM8q167ZlhCiAavUCWLVnpkLAl98VBfD9sufU+e2OxlCtr vz5f25qRuDRyFUe6CTbrw3RuiTi84AZt3dFiZy9tRJfQhHBy9F4U472n6j9/5WcfmpwDRn/4wdT t2cBLzLsugM8eB7K3dBtPzS2+ReYRSm6k5Veg2GLE6O8Dv1yjAdJKv9sRrOCX4Y36PVC4Ob2gvv G+TQksMsA5yRUt2ZbCadM0TkSe6vMmYkiv9QOna2eZ+MvrL6Ti4= Do not set vb->pr_dev_info.report unconditionally if VIRTIO_BALLOON_F_REPORTING is not available. Signed-off-by: Dongli Zhang --- drivers/virtio/virtio_balloon.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c index 74fe59f5a78c..0c39f2415324 100644 --- a/drivers/virtio/virtio_balloon.c +++ b/drivers/virtio/virtio_balloon.c @@ -1034,7 +1034,6 @@ static int virtballoon_probe(struct virtio_device *vdev) poison_val, &poison_val); } - vb->pr_dev_info.report = virtballoon_free_page_report; if (virtio_has_feature(vb->vdev, VIRTIO_BALLOON_F_REPORTING)) { unsigned int capacity; @@ -1044,6 +1043,8 @@ static int virtballoon_probe(struct virtio_device *vdev) goto out_unregister_oom; } + vb->pr_dev_info.report = virtballoon_free_page_report; + /* * The default page reporting order is @pageblock_order, which * corresponds to 512MB in size on ARM64 when 64KB base page -- 2.39.3