1REMAP_PFN_RANGE(9)        Memory Management in Linux        REMAP_PFN_RANGE(9)
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NAME

6       remap_pfn_range - remap kernel memory to userspace
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SYNOPSIS

9       int remap_pfn_range(struct vm_area_struct * vma, unsigned long addr,
10                           unsigned long pfn, unsigned long size,
11                           pgprot_t prot);
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ARGUMENTS

14       vma
15           user vma to map to
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17       addr
18           target user address to start at
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20       pfn
21           physical address of kernel memory
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23       size
24           size of map area
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26       prot
27           page protection flags for this mapping
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NOTE

30       this is only safe if the mm semaphore is held when called.
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33Kernel Hackers Manual 3.10         June 2019                REMAP_PFN_RANGE(9)
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