diff --git a/include/ircd/ctx/README.md b/include/ircd/ctx/README.md
index e0928b4b5..3a7b86ba4 100644
--- a/include/ircd/ctx/README.md
+++ b/include/ircd/ctx/README.md
@@ -38,9 +38,7 @@ instruction boundaries rather than at cooperative boundaries.
 
 ### Foundation
 
-This library is based in `boost::coroutine / boost::context` which wraps
-the register save/restores in a cross-platform way in addition to providing
-properly `mmap(NOEXEC)'ed` etc memory appropriate for stacks on each platform.
+This library is embedded around `boost::coroutine / boost::context`.
 
 `boost::asio` has then added its own comprehensive integration with the above
 libraries eliminating the need for us to worry about a lot of boilerplate to
diff --git a/ircd/ctx.cc b/ircd/ctx.cc
index 18b4a96ee..420c49d24 100644
--- a/ircd/ctx.cc
+++ b/ircd/ctx.cc
@@ -3151,7 +3151,8 @@ ircd::ctx::stack::allocator::allocate(stack_context &c,
 	c.sp = ircd::data(buf) + c.size;
 
 	#if defined(BOOST_USE_VALGRIND)
-	c.valgrind_stack_id = VALGRIND_STACK_REGISTER(c.sp, ircd::data(buf));
+	if(vg::active)
+		c.valgrind_stack_id = vg::stack::add(buf);
 	#endif
 
 	this->owner = bool(umb);
@@ -3164,7 +3165,8 @@ ircd::ctx::stack::allocator::deallocate(stack_context &c)
 	assert(c.sp);
 
 	#if defined(BOOST_USE_VALGRIND)
-	VALGRIND_STACK_DEREGISTER(c.valgrind_stack_id)
+	if(vg::active)
+		vg::stack::del(c.valgrind_stack_id);
 	#endif
 
 	const auto base