From 9c1b8a4eb085d7c639c2039fc14beba83d95653e Mon Sep 17 00:00:00 2001
From: Robert Morris <rtm@csail.mit.edu>
Date: Wed, 24 Aug 2022 13:24:24 -0400
Subject: sfence before writing satp, as well as after

---
 user/grind.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'user')

diff --git a/user/grind.c b/user/grind.c
index 5cd89f4..431ed19 100644
--- a/user/grind.c
+++ b/user/grind.c
@@ -305,7 +305,7 @@ iter()
     exit(1);
   }
   if(pid1 == 0){
-    rand_next = 31;
+    rand_next ^= 31;
     go(0);
     exit(0);
   }
@@ -316,7 +316,7 @@ iter()
     exit(1);
   }
   if(pid2 == 0){
-    rand_next = 7177;
+    rand_next ^= 7177;
     go(1);
     exit(0);
   }
@@ -346,5 +346,6 @@ main()
       wait(0);
     }
     sleep(20);
+    rand_next += 1;
   }
 }
-- 
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