Messages in this thread | | | Date | Wed, 14 Aug 2019 16:50:33 +0200 | From | Corentin Labbe <> | Subject | DMA-API: cacheline tracking ENOMEM, dma-debug disabled due to nouveau ? |
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Hello
Since lot of release (at least since 4.19), I hit the following error message: DMA-API: cacheline tracking ENOMEM, dma-debug disabled
After hitting that, I try to check who is creating so many DMA mapping and see: cat /sys/kernel/debug/dma-api/dump | cut -d' ' -f2 | sort | uniq -c 6 ahci 257 e1000e 6 ehci-pci 5891 nouveau 24 uhci_hcd
Does nouveau having this high number of DMA mapping is normal ?
Regards
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