implement dmem semi-properlyHEADmaster

+ Add tests and fix virtual mapping, this is enough to start writing
  proper userspace drivers

1 files changed, 9 insertions, 0 deletions

diff --git a/src/vmem.c b/src/vmem.c
index 76e0ece..afdac95 100644
--- a/src/vmem.c
+++ b/src/vmem.c
@@ -12,6 +12,7 @@
 #include <kmi/panic.h>
 #include <kmi/debug.h>
 #include <kmi/bits.h>
+#include <kmi/dmem.h>
 #include <kmi/vmem.h>
 #include <arch/vmem.h>
 
@@ -197,6 +198,14 @@ static void __free_mapping(struct tcb *t, struct mem_region *m)
 	if (is_set(m->flags, MR_NONBACKED))
 		return;
 
+	if (is_set(m->flags, MR_DEV)) {
+		stat_t ret = free_known_devmem(t, m);
+		MAYBE_UNUSED(ret);
+
+		assert(ret == OK);
+		return;
+	}
+
 	pm_t start = __addr(m->start);
 	pm_t end = __addr(m->end);
 	size_t size = end - start;