Re: [RFC PATCH v3 3/6] swiotlb: Use restricted DMA pool if available
From: Christoph Hellwig <hch@lst.de>
Date: 2021-01-13 12:45:07
Also in:
linux-devicetree, linux-iommu, lkml, xen-devel
+#ifdef CONFIG_SWIOTLB + if (unlikely(swiotlb_force == SWIOTLB_FORCE) || dev->dma_io_tlb_mem) return swiotlb_map(dev, phys, size, dir, attrs); +#endif
Please provide a wrapper for the dev->dma_io_tlb_mem check that always returns false if the per-device swiotlb support is not enabled.
quoted hunk ↗ jump to hunk
index 7fb2ac087d23..1f05af09e61a 100644--- a/kernel/dma/swiotlb.c +++ b/kernel/dma/swiotlb.c@@ -222,7 +222,6 @@ int __init swiotlb_init_with_tbl(char *tlb, unsigned long nslabs, int verbose) mem->orig_addr[i] = INVALID_PHYS_ADDR; } mem->index = 0; - no_iotlb_memory = false;
How does this fit in here?