Hi Catalin,
On Thu, Jun 28, 2018 at 10:53:22AM +0000, catalin.vasile@xxxxxxxxxxxx wrote:
> I have some pages allocated through __get_free_pages(). Is there a way
> to set such a page's protection to be read-only? I am working with an
> octeon2 mips platform.
__get_free_pages() is going to give you a virtual address in the
unmapped (c)kseg0 segment, which you cannot modify the protection of.
One option might be to switch away from __get_free_pages() towards using
alloc_pages(), followed by vmap() with a read-only prot argument.
Thanks,
Paul
