lguest: remove NOTIFY facility from demonstration launcher.

This was only used for early console, now we can get rid of it altogether.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

diff --git a/tools/lguest/lguest.c b/tools/lguest/lguest.c
index 7cc1fed1094d2296f2fc59a82d1e9ef8c44eb5a8..5d104321f70f73d614a12b95a2273bcffc7b9db0 100644 (file)
--- a/tools/lguest/lguest.c
+++ b/tools/lguest/lguest.c
@@ -1079,23 +1079,6 @@ static void cleanup_devices(void)
                tcsetattr(STDIN_FILENO, TCSANOW, &orig_term);
 }
 
-/*L:215
- * This is the generic routine we call when the Guest uses LHCALL_NOTIFY.
- */
-static void handle_output(unsigned long addr)
-{
-       /*
-        * Early console write is done using notify on a nul-terminated string
-        * in Guest memory.  It's also great for hacking debugging messages
-        * into a Guest.
-        */
-       if (addr >= guest_limit)
-               errx(1, "Bad NOTIFY %#lx", addr);
-
-       write(STDOUT_FILENO, from_guest_phys(addr),
-             strnlen(from_guest_phys(addr), guest_limit - addr));
-}
-
 /*L:217
  * We do PCI.  This is mainly done to let us test the kernel virtio PCI
  * code.
@@ -2662,14 +2645,8 @@ static void __attribute__((noreturn)) run_guest(void)
 
                /* We read from the /dev/lguest device to run the Guest. */
                readval = pread(lguest_fd, &notify, sizeof(notify), cpu_id);
-
-               /* One unsigned long means the Guest did HCALL_NOTIFY */
                if (readval == sizeof(notify)) {
-                       if (notify.trap == 0x1F) {
-                               verbose("Notify on address %#08x\n",
-                                       notify.addr);
-                               handle_output(notify.addr);
-                       } else if (notify.trap == 13) {
+                       if (notify.trap == 13) {
                                verbose("Emulating instruction at %#x\n",
                                        getreg(eip));
                                emulate_insn(notify.insn);