don't change counter in set_unused

2017-12-17 18:45:41 +01:00
parent 82bae0b314
commit 2d041bbb51
1 changed files with 2 additions and 2 deletions
--- a/src/arch/x86_64/paging/entry.rs
+++ b/src/arch/x86_64/paging/entry.rs
@@ -29,12 +29,12 @@ pub const COUNTER_MASK: u64 = 0x3ff00000_00000000;
 impl Entry {
    /// Is the entry unused?
    pub fn is_unused(&self) -> bool {
-        self.0 == 0
+        self.0 == (self.0 & COUNTER_MASK)
    }

    /// Make the entry unused
    pub fn set_unused(&mut self) {
-        self.0 = 0;
+        self.0 = self.0 & COUNTER_MASK;
    }

    /// Get the address this page references