mirror of https://gitee.com/openkylin/linux.git
3a8e326517
When running in non-cache coherent configuration the memory that was allocated with dma_alloc_coherent() has a custom mapping and so there is no 1-to-1 relationship between the kernel virtual address and the PFN. This means that virt_to_pfn() will not work correctly for those addresses and the default mmap implementation in the form of dma_common_mmap() will map some random, but not the requested, memory area. Fix this by providing a custom mmap implementation that looks up the PFN from the page table rather than using virt_to_pfn. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Michal Simek <michal.simek@xilinx.com> |
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| .. | ||
| Makefile | ||
| consistent.c | ||
| fault.c | ||
| highmem.c | ||
| init.c | ||
| mmu_context.c | ||
| pgtable.c | ||