Hmm, I wonder if we are not actually using swiotlb in the end, can you check if your dmesg contains this line or not? PCI-DMA: Using software bounce buffering for IO (SWIOTLB) If not I guess we found a bug in swiotlb exit vs is_swiotlb_buffer, and you can try this patch: diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c index d6361776dc5c..1fb6fd68b9c7 100644 --- a/kernel/dma/swiotlb.c +++ b/kernel/dma/swiotlb.c @@ -378,6 +378,8 @@ void __init swiotlb_exit(void) memblock_free_late(io_tlb_start, PAGE_ALIGN(io_tlb_nslabs << IO_TLB_SHIFT)); } + io_tlb_start = 0; + io_tlb_end = 0; io_tlb_nslabs = 0; max_segment = 0; } _______________________________________________ amd-gfx mailing list amd-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/amd-gfx
