How to alloc_pages from a given physical memory?

[kipade]

I use arm 32bit cpu, with kernel 3.14

在 2017年07月06日 16:53, Kamil Konieczny wrote:
>
> On 06.07.2017 05:08, kipade wrote:
>> Here I want to allocate a block of shared memory from a given physical
>> address, such as 0x90000000, 6M. However, alloc_pages can't fit this
>> point. I had reserved enugh pages via cmem, there also have enough
>> continous pages for such allocation anywhere else. What should I do?
> On what platform are you working ?
>
> I think this is platfrom depended.
>