mirror of
https://gitee.com/bianbu-linux/linux-6.6
synced 2025-04-24 14:07:52 -04:00
abdaf11ac1
Add back a hook to optimize dcache flushing after reading executable code using DMA. This gets ia64 out of the business of pretending to be dma incoherent just for this optimization. Signed-off-by: Christoph Hellwig <hch@lst.de>
9 lines
245 B
C
9 lines
245 B
C
// SPDX-License-Identifier: GPL-2.0
|
|
#include <linux/dma-mapping.h>
|
|
#include <linux/export.h>
|
|
|
|
/* Set this to 1 if there is a HW IOMMU in the system */
|
|
int iommu_detected __read_mostly;
|
|
|
|
const struct dma_map_ops *dma_ops;
|
|
EXPORT_SYMBOL(dma_ops);
|