ubject: pmap_extract question
> To: freebsd-current@freebsd.org
> Date: Tuesday, March 30, 2010, 12:35 PM
>
> Say I have a kernel module that allocates a
> contiguous chunk of kernel physical memory (note that a call
> to vtophys() reports a non-zero value):
>
&g
Assuming that you're using the right pmap(it looks like you are, but it
depends on the thread context in which you're running), that will only work
if the userland application has touched the page and faulted it in. If it's
never tried to access the page it will never be mapped into the process's
Say I have a kernel module that allocates a contiguous chunk of kernel
physical memory (note that a call to vtophys() reports a non-zero value):
memory_chunk = contigmalloc(memory_chunk_length,
NULL,
M_NOWAIT,
