paging: Reintroduce setUserMemoryAccess function

1 files changed, 6 insertions, 0 deletions

diff --git a/src/lib/paging.zig b/src/lib/paging.zig
index d2d9e1a..870e4f7 100644
--- a/src/lib/paging.zig
+++ b/src/lib/paging.zig
@@ -589,3 +589,9 @@ pub fn zeroedAlloc(n: usize) AllocError![]align(page_size) u8 {
 
     return ret;
 }
+
+pub fn setUserMemoryAccess(enable: bool) void {
+    var sstatus = instructions.sstatus.read();
+    sstatus.supervisor_user_memory_access = @bitCast(enable);
+    instructions.sstatus.write(sstatus);
+}