Allocate huge chunk of pageable memory in FreeBSD kernel space
Zhuojia Shen
zshen10 at cs.rochester.edu
Wed Apr 26 22:28:07 UTC 2017
Hi,
I'm working on a project that uses FreeBSD 11.0 on amd64 to do some
security research. Now what I want to achieve is to allocate an 8TB
portion of memory within the kernel virtual address space using demand
paging. I noticed that there is an unused portion of kernel space from
0xffff804020101000 to 0xfffff80000000000 where the 8TB structure will
fit. I also noticed that there is a function kmap_alloc_wait() which
can be used to allocate pageable memory. Do you suggest that I use this
function and, if so, how would I use it?
Thank you,
Zhuojia
--
Zhuojia Shen
Graduate Student
Department of Computer Science
University of Rochester
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