docs: man: Document map_unmap()

Signed-off-by: Ian Moffett <ian@osmora.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/share/man/man9/pmap.9 b/share/man/man9/pmap.9
index f549886..9e4d5e0 100644
--- a/share/man/man9/pmap.9
+++ b/share/man/man9/pmap.9
@@ -33,6 +33,7 @@
 .In vm/pmap.h
 
 .Ft pmap_map(struct vm_ctx *, vaddr_t, paddr_t, vm_prot_t);
+.Ft pmap_unmap(struct vm_ctx *, vaddr_t);
 .Sh DESCRIPTION
 The machine dependent virtual memory layer contains a standard set of
 functions that shall be implemented per architecture and left alone
@@ -59,6 +60,11 @@ executable. On platforms like AMD64, execution of pages
 without this bit will result in an exception from the
 instruction fetch, for AMD64, a #PF will occur.
 
+The
+.Ft pmap_unmap()
+function is used to unmap a virtual address which
+leaves the address invalid.
+
 .Sh AUTHORS
 .An Ian Moffett Aq Mt ian@osmora.org