6e8d7968e9
The current dma_ops do not specify an mmap function so maping falls back to the default implementation. There are at least two issues with using the default implementation: 1) The pgprot is always pgprot_noncached (strongly ordered) memory even with coherent operations 2) dma_common_mmap calls virt_to_page on the remapped non-coherent address which leads to invalid memory being mapped. Fix both these issue by implementing a custom mmap function which correctly accounts for remapped addresses and sets vm_pg_prot appropriately. Signed-off-by: Laura Abbott <lauraa@codeaurora.org> [catalin.marinas@arm.com: replaced "arm64_" with "__" prefix for consistency] Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> |
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| boot | ||
| configs | ||
| include | ||
| kernel | ||
| kvm | ||
| lib | ||
| mm | ||
| xen | ||
| Kconfig | ||
| Kconfig.debug | ||
| Makefile | ||