Re: Mapping non-page aligned data to user

[Bodo Eggert]

Vira <sri1369_s@xxxxxxxxx> wrote:

> Is there a way to map a non-page aligned kernel physical address to user
> virtual address? remap_pfn_range and vm_insert_page operate only on
> page-aligned physical addresses.
> 
> If there is no such support, would it be too complicated to try out
> writing something on my own to map non-page aligned addresses (the data
> size is under my control - so I can make that a multiple of page size)?
> 
> Any suggestions appreciated.

It can only be done using segmented memory, and you don't want that.

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