linux-kernel - Re: [PATCH 2/2] vdpa/mlx5: Initialize CVQ iotlb spinlock

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Message-ID: <570ab4b9-eed7-3c5a-400a-261a9a205b4f@nvidia.com>
Date:   Mon, 13 Feb 2023 14:24:40 +0200
From:   Eli Cohen <elic@...dia.com>
To:     "Michael S. Tsirkin" <mst@...hat.com>
Cc:     jasowang@...hat.com, si-wei.liu@...cle.com, eperezma@...hat.com,
        virtualization@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] vdpa/mlx5: Initialize CVQ iotlb spinlock


On 13/02/2023 14:19, Michael S. Tsirkin wrote:
> On Mon, Feb 06, 2023 at 02:20:16PM +0200, Eli Cohen wrote:
>> Initialize itolb spinlock.
>>
>> Fixes: 5262912ef3cf ("vdpa/mlx5: Add support for control VQ and MAC setting")
>> Signed-off-by: Eli Cohen <elic@...dia.com>
> threading was broken here but whatevs.
What exactly do you mean by "threading was broken". Is it because I sent 
two unrelated fixes together appearing as patch 1/2 and 2/2?
>
>> ---
>>   drivers/vdpa/mlx5/core/resources.c | 1 +
>>   1 file changed, 1 insertion(+)
>>
>> diff --git a/drivers/vdpa/mlx5/core/resources.c b/drivers/vdpa/mlx5/core/resources.c
>> index 45ad41287a31..d5a59c9035fb 100644
>> --- a/drivers/vdpa/mlx5/core/resources.c
>> +++ b/drivers/vdpa/mlx5/core/resources.c
>> @@ -233,6 +233,7 @@ static int init_ctrl_vq(struct mlx5_vdpa_dev *mvdev)
>>   	if (!mvdev->cvq.iotlb)
>>   		return -ENOMEM;
>>   
>> +	spin_lock_init(&mvdev->cvq.iommu_lock);
>>   	vringh_set_iotlb(&mvdev->cvq.vring, mvdev->cvq.iotlb, &mvdev->cvq.iommu_lock);
>>   
>>   	return 0;
>> -- 
>> 2.38.1