Messages in this thread | | | Subject | kernel spew from nouveau/ swiotlb | From | Mike Galbraith <> | Date | Thu, 10 May 2018 11:10:27 +0200 |
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Greetings,
When box is earning its keep, nouveau/swiotlb grumble.. a LOT. The below is from master.today.
[12594.640959] nouveau 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes) [12594.693000] nouveau 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes) [12594.713787] nouveau 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes) [12594.743413] nouveau 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes) [12594.796740] nouveau 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes) [12607.000774] swiotlb_tbl_map_single: 54 callbacks suppressed [12607.000776] nouveau 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes) [12607.347941] nouveau 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes) [12608.677038] nouveau 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes) homer:/novell/ssh # dmesg|grep 'swiotlb buffer is full'|wc -l 2052 homer:/novell/ssh # dmesg|grep 'callbacks suppressed'|wc -l 171
lib/swiotlb.c: 573 not_found: 574 spin_unlock_irqrestore(&io_tlb_lock, flags); 575 if (!(attrs & DMA_ATTR_NO_WARN) && printk_ratelimit()) 576 dev_warn(hwdev, "swiotlb buffer is full (sz: %zd bytes)\n", size);
Does nouveau perhaps want one of those DMA_ATTR_NO_WARN thingies?
-Mike
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