disable interrupts when holding kernel lock

1 files changed, 6 insertions, 0 deletions

diff --git a/mp.c b/mp.c
index ca581e5..eb5afc9 100644
--- a/mp.c
+++ b/mp.c
@@ -183,6 +183,12 @@ lapic_enableintr(void)
   lapic_write(LAPIC_TPR, 0);
 }
 
+void
+lapic_disableintr(void) 
+{
+  lapic_write(LAPIC_TPR, 0xFF);
+}
+
 int
 cpu(void)
 {