From: "Zhu, Lingshan" <lingshan.zhu@intel•com>
To: Parav Pandit <parav@nvidia•com>,
"jasowang@redhat•com" <jasowang@redhat•com>,
"mst@redhat•com" <mst@redhat•com>
Cc: "virtualization@lists•linux-foundation.org"
<virtualization@lists•linux-foundation.org>,
"netdev@vger•kernel.org" <netdev@vger•kernel.org>,
"xieyongji@bytedance•com" <xieyongji@bytedance•com>,
"gautam.dawar@amd•com" <gautam.dawar@amd•com>
Subject: Re: [PATCH V3 6/6] vDPA: fix 'cast to restricted le16' warnings in vdpa.c
Date: Fri, 8 Jul 2022 14:25:09 +0800 [thread overview]
Message-ID: <dea8be07-bc25-192c-ecd7-636cbdb2a629@intel.com> (raw)
In-Reply-To: <PH0PR12MB5481D4D77EAC336BA68E85AADCBD9@PH0PR12MB5481.namprd12.prod.outlook.com>
On 7/2/2022 6:18 AM, Parav Pandit wrote:
>> From: Zhu Lingshan <lingshan.zhu@intel•com>
>> Sent: Friday, July 1, 2022 9:28 AM
>>
>> This commit fixes spars warnings: cast to restricted __le16 in function
>> vdpa_dev_net_config_fill() and
>> vdpa_fill_stats_rec()
>>
> Missing fixes tag.
I am not sure whether this deserve a fix tag, I will look into it.
>
> But I fail to understand the warning.
> config.status is le16, and API used is to convert le16 to cpu.
> What is the warning about, can you please explain?
The warnings are:
drivers/vdpa/vdpa.c:828:19: warning: cast to restricted __le16
drivers/vdpa/vdpa.c:828:19: warning: cast from restricted __virtio16
>
>> Signed-off-by: Zhu Lingshan <lingshan.zhu@intel•com>
>> ---
>> drivers/vdpa/vdpa.c | 6 +++---
>> 1 file changed, 3 insertions(+), 3 deletions(-)
>>
>> diff --git a/drivers/vdpa/vdpa.c b/drivers/vdpa/vdpa.c index
>> 846dd37f3549..ed49fe46a79e 100644
>> --- a/drivers/vdpa/vdpa.c
>> +++ b/drivers/vdpa/vdpa.c
>> @@ -825,11 +825,11 @@ static int vdpa_dev_net_config_fill(struct
>> vdpa_device *vdev, struct sk_buff *ms
>> config.mac))
>> return -EMSGSIZE;
>>
>> - val_u16 = le16_to_cpu(config.status);
>> + val_u16 = __virtio16_to_cpu(true, config.status);
>> if (nla_put_u16(msg, VDPA_ATTR_DEV_NET_STATUS, val_u16))
>> return -EMSGSIZE;
>>
>> - val_u16 = le16_to_cpu(config.mtu);
>> + val_u16 = __virtio16_to_cpu(true, config.mtu);
>> if (nla_put_u16(msg, VDPA_ATTR_DEV_NET_CFG_MTU, val_u16))
>> return -EMSGSIZE;
>>
>> @@ -911,7 +911,7 @@ static int vdpa_fill_stats_rec(struct vdpa_device
>> *vdev, struct sk_buff *msg,
>> }
>> vdpa_get_config_unlocked(vdev, 0, &config, sizeof(config));
>>
>> - max_vqp = le16_to_cpu(config.max_virtqueue_pairs);
>> + max_vqp = __virtio16_to_cpu(true, config.max_virtqueue_pairs);
>> if (nla_put_u16(msg, VDPA_ATTR_DEV_NET_CFG_MAX_VQP,
>> max_vqp))
>> return -EMSGSIZE;
>>
>> --
>> 2.31.1
next prev parent reply other threads:[~2022-07-08 6:25 UTC|newest]
Thread overview: 113+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-01 13:28 [PATCH V3 0/6] ifcvf/vDPA: support query device config space through netlink Zhu Lingshan
2022-07-01 13:28 ` [PATCH V3 1/6] vDPA/ifcvf: get_config_size should return a value no greater than dev implementation Zhu Lingshan
2022-07-04 4:39 ` Jason Wang
2022-07-08 6:44 ` Zhu, Lingshan
2022-07-13 5:44 ` Michael S. Tsirkin
2022-07-13 7:52 ` Zhu, Lingshan
2022-07-13 5:31 ` Michael S. Tsirkin
2022-07-13 7:48 ` Zhu, Lingshan
2022-07-01 13:28 ` [PATCH V3 2/6] vDPA/ifcvf: support userspace to query features and MQ of a management device Zhu Lingshan
2022-07-04 4:43 ` Jason Wang
2022-07-08 6:54 ` Zhu, Lingshan
2022-07-01 13:28 ` [PATCH V3 3/6] vDPA: allow userspace to query features of a vDPA device Zhu Lingshan
2022-07-01 22:02 ` Parav Pandit
2022-07-04 4:46 ` Jason Wang
2022-07-04 12:53 ` Parav Pandit
2022-07-05 7:59 ` Zhu, Lingshan
2022-07-05 11:56 ` Parav Pandit
2022-07-05 16:56 ` Zhu, Lingshan
2022-07-05 17:01 ` Parav Pandit
2022-07-06 2:25 ` Zhu, Lingshan
2022-07-06 2:28 ` Parav Pandit
2022-07-23 11:27 ` Zhu, Lingshan
2022-07-24 15:23 ` Parav Pandit
2022-07-27 8:15 ` Si-Wei Liu
2022-07-27 11:38 ` Zhu, Lingshan
2022-07-08 6:16 ` Zhu, Lingshan
2022-07-08 16:13 ` Parav Pandit
2022-07-11 2:18 ` Zhu, Lingshan
2022-07-01 13:28 ` [PATCH V3 4/6] vDPA: !FEATURES_OK should not block querying device config space Zhu Lingshan
2022-07-01 22:12 ` Parav Pandit
2022-07-08 6:22 ` Zhu, Lingshan
2022-07-13 5:23 ` Michael S. Tsirkin
2022-07-13 7:46 ` Zhu, Lingshan
[not found] ` <00889067-50ac-d2cd-675f-748f171e5c83@oracle.com>
[not found] ` <63242254-ba84-6810-dad8-34f900b97f2f@intel.com>
[not found] ` <8002554a-a77c-7b25-8f99-8d68248a741d@oracle.com>
2022-07-28 2:06 ` Jason Wang
2022-07-28 7:08 ` Si-Wei Liu
2022-07-28 7:36 ` Jason Wang
2022-07-28 7:44 ` Zhu, Lingshan
[not found] ` <2dfff5f3-3100-4a63-6da3-3e3d21ffb364@oracle.com>
2022-07-28 11:28 ` spec clarification (was Re: [PATCH V3 4/6] vDPA: !FEATURES_OK should not block querying device config space) Michael S. Tsirkin
2022-07-28 11:35 ` [PATCH V3 4/6] vDPA: !FEATURES_OK should not block querying device config space Michael S. Tsirkin
2022-07-28 22:12 ` Si-Wei Liu
[not found] ` <00e2e07e-1a2e-7af8-a060-cc9034e0d33f@intel.com>
[not found] ` <b58dba25-3258-d600-ea06-879094639852@oracle.com>
[not found] ` <c143e2da-208e-b046-9b8f-1780f75ed3e6@intel.com>
2022-07-29 20:55 ` Si-Wei Liu
2022-08-01 4:44 ` Jason Wang
2022-08-01 22:53 ` Si-Wei Liu
2022-08-01 22:58 ` Si-Wei Liu
2022-08-02 6:33 ` Jason Wang
2022-08-03 1:26 ` Si-Wei Liu
2022-08-03 2:30 ` Zhu, Lingshan
2022-08-03 23:09 ` Si-Wei Liu
2022-08-04 1:41 ` Zhu, Lingshan
2022-08-04 1:41 ` Zhu, Lingshan
2022-07-01 13:28 ` [PATCH V3 5/6] vDPA: answer num of queue pairs = 1 to userspace when VIRTIO_NET_F_MQ == 0 Zhu Lingshan
2022-07-01 22:07 ` Parav Pandit
2022-07-08 6:21 ` Zhu, Lingshan
2022-07-08 16:23 ` Parav Pandit
2022-07-11 2:29 ` Zhu, Lingshan
2022-07-12 16:48 ` Parav Pandit
2022-07-13 3:03 ` Zhu, Lingshan
2022-07-13 3:06 ` Parav Pandit
2022-07-13 3:45 ` Zhu, Lingshan
2022-07-26 15:56 ` Parav Pandit
2022-07-26 19:52 ` Michael S. Tsirkin
2022-07-26 20:49 ` Parav Pandit
2022-07-27 2:14 ` Zhu, Lingshan
2022-07-27 2:17 ` Parav Pandit
2022-07-27 2:53 ` Zhu, Lingshan
2022-07-27 3:47 ` Parav Pandit
2022-07-27 4:24 ` Zhu, Lingshan
2022-07-27 6:01 ` Michael S. Tsirkin
2022-07-27 6:25 ` Zhu, Lingshan
2022-07-27 6:56 ` Jason Wang
2022-07-27 9:05 ` Michael S. Tsirkin
2022-07-27 6:54 ` Jason Wang
2022-07-27 9:02 ` Michael S. Tsirkin
2022-07-27 9:50 ` Jason Wang
2022-07-27 15:45 ` Michael S. Tsirkin
2022-07-28 1:21 ` Jason Wang
2022-07-28 3:46 ` Zhu, Lingshan
2022-07-28 5:53 ` Jason Wang
2022-07-28 6:02 ` Zhu, Lingshan
2022-07-28 6:41 ` Michael S. Tsirkin
2022-08-01 4:50 ` Jason Wang
2022-07-27 7:50 ` Si-Wei Liu
2022-07-27 9:01 ` Michael S. Tsirkin
2022-07-27 10:09 ` Si-Wei Liu
2022-07-27 11:54 ` Zhu, Lingshan
2022-07-28 1:41 ` Si-Wei Liu
2022-07-28 2:44 ` Zhu, Lingshan
2022-07-28 21:54 ` Si-Wei Liu
2022-07-29 2:07 ` Zhu, Lingshan
2022-07-27 15:48 ` Michael S. Tsirkin
2022-07-13 5:26 ` Michael S. Tsirkin
2022-07-13 7:47 ` Zhu, Lingshan
2022-07-26 15:54 ` Parav Pandit
2022-07-26 19:48 ` Michael S. Tsirkin
2022-07-26 20:53 ` Parav Pandit
2022-07-27 1:56 ` Zhu, Lingshan
2022-07-27 2:11 ` Zhu, Lingshan
2022-07-01 13:28 ` [PATCH V3 6/6] vDPA: fix 'cast to restricted le16' warnings in vdpa.c Zhu Lingshan
2022-07-01 22:18 ` Parav Pandit
2022-07-08 6:25 ` Zhu, Lingshan [this message]
2022-07-08 16:08 ` Parav Pandit
2022-07-29 8:53 ` Michael S. Tsirkin
2022-07-29 9:07 ` Zhu, Lingshan
2022-07-29 9:17 ` Michael S. Tsirkin
2022-07-29 9:20 ` Zhu, Lingshan
2022-07-29 9:23 ` Michael S. Tsirkin
2022-07-29 9:35 ` Zhu, Lingshan
2022-07-29 9:39 ` Michael S. Tsirkin
2022-07-29 10:01 ` Zhu, Lingshan
2022-07-29 10:16 ` Michael S. Tsirkin
2022-07-29 10:18 ` Zhu, Lingshan
2022-08-01 4:33 ` Jason Wang
2022-08-01 6:25 ` Michael S. Tsirkin
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