BPI-R4 Debian11 swiotlb buffer is full

Banana Pi Router design BPI-R4(MT7988)
1

Hello

I would like to as about any solution for the message :

swiotlb buffer is full (sz: 84 bytes), total 512 (slots), used 512 (slots)

Thank you

2

Which kernel/image do you use? Afair this was an issue in early network support based on 4gb ram which was fixed by 36bit adressing in ethernet and switch driver

3

I am using debian11 5.4

4

Not sure how current bpi images can be configured,but you can try passing mem=3G to linux via uboot (bootargs) to linux. In older images there was an uEnv.txt like in my images and a bootopts variable to set there

1 Like
5

Thank you I change the uEnv.txt to 3075 and I think it works