swiotlb: dynamically allocate io_tlb_default_mem

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Instead of allocating ->list and ->orig_addr separately just do one
dynamic allocation for the actual io_tlb_mem structure.  This simplifies
a lot of the initialization code, and also allows to just check
io_tlb_default_mem to see if swiotlb is in use.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

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Christoph Hellwig 2021-03-18 17:14:23 +01:00 • committed by Konrad Rzeszutek Wilk

parent 73f620951b

commit 2d29960af0

3 changed files with 117 additions and 229 deletions

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22

drivers/xen/swiotlb-xen.c

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18

include/linux/swiotlb.h

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304

kernel/dma/swiotlb.c

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