Commit 9a8de639 authored Sep 08, 2009 by Dan Williams

async_tx: remove HIGHMEM64G restriction

This restriction prevented ASYNC_TX_DMA from being enabled on platform
configurations where DMA address conversion could not be performed in
place on the stack. Since commit 04ce9ab3 ("async_xor: permit callers
to pass in a 'dma/page scribble' region") the async_tx api now either
uses a caller provided 'scribble' buffer, or performs the conversion in
place when sizeof(dma_addr_t) <= sizeof(struct page *).

Signed-off-by: Dan Williams <dan.j.williams@intel.com>

parent d8902adc

drivers/dma/Kconfig

+1 −1

Original line number	Diff line number	Diff line
		@@ -128,7 +128,7 @@ config NET_DMA

		config ASYNC_TX_DMA
		bool "Async_tx: Offload support for the async_tx api"
		depends on DMA_ENGINE && !HIGHMEM64G
		depends on DMA_ENGINE
		help
		This allows the async_tx api to take advantage of offload engines for
		memcpy, memset, xor, and raid6 p+q operations. If your platform has

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