Gilles Chanteperdrix wrote:
>> if ((vaddr >= VMALLOC_START) && (vaddr < VMALLOC_END))
>>
>> returns false, and the memory is handled as if it were kmalloced memory.
>
> Replacing this test with if (!virt_addr_valid(vaddr)) should do the
> trick. Remains to see whethe this macro existed in older versions.
>
No, it will not work. vmalloc_to_page will fail for the same reason. So,
we can not use rtdm_mmap_to_user with virtual address returned by
dma_alloc_coherent, unless we start writing a page walk table like
vmalloc_to_page but which does not test that the give address is in the
vmalloc range.
--
Gilles.
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