Add control page offset checksstaging

Make sure the kernel and userspace compilers have the same idea of the
layout of the control page.

1 files changed, 10 insertions, 1 deletions

diff --git a/src/kernel_iface.c b/src/kernel_iface.c
index b9c8f59..4cc1af5 100644
--- a/src/kernel_iface.c
+++ b/src/kernel_iface.c
@@ -82,7 +82,16 @@ int init_kernel_iface(void)
         int err = 0;
         long page_size = sysconf(_SC_PAGESIZE);
 
-        BUILD_BUG_ON(sizeof(union np_flag) != sizeof(uint32_t));
+        BUILD_BUG_ON(sizeof(union np_flag) != sizeof(uint64_t));
+
+        BUILD_BUG_ON(offsetof(struct control_page, sched.raw)
+                     != LITMUS_CP_OFFSET_SCHED);
+        BUILD_BUG_ON(offsetof(struct control_page, irq_count)
+                     != LITMUS_CP_OFFSET_IRQ_COUNT);
+        BUILD_BUG_ON(offsetof(struct control_page, ts_syscall_start)
+                     != LITMUS_CP_OFFSET_TS_SC_START);
+        BUILD_BUG_ON(offsetof(struct control_page, irq_syscall_start)
+                     != LITMUS_CP_OFFSET_IRQ_SC_START);
 
         err = map_file(LITMUS_CTRL_DEVICE, (void**) &ctrl_page, CTRL_PAGES * page_size);
         if (err) {