MMU: Fixed massive problem in assumption of RAM layout

This caused certain addreses which where not RAM memory to be assigned
to virtual addresses incorrectly. This caused a significant slowdown
when running it with KVM due to constantly having to exit the VM if the
OS writes to memory that is not RAM.

This fix increased the performance of KVM significantly and improved TCG
performance.

1 files changed, 40 insertions, 9 deletions

diff --git a/userland/irc/irc.c b/userland/irc/irc.c
index b69e1dd..297c332 100644
--- a/userland/irc/irc.c
+++ b/userland/irc/irc.c
@@ -129,20 +129,26 @@ void msg_sv_println(struct sv s) {
 }
 
 void msg_sv_print(struct sv s) {
+  char buffer[4096];
+  int buffer_pos = 0;
+  mvcursor(message_pos_x, message_pos_y);
   for (size_t i = 0; i < s.length; i++) {
-    mvcursor(message_pos_x, message_pos_y);
-    if ('\n' == s.s[i]) {
-      message_pos_x = 0;
-      message_pos_y++;
-      continue;
-    }
-    printf("%c", s.s[i]);
+    buffer[buffer_pos] = s.s[i];
+    buffer_pos++;
     message_pos_x++;
-    if (message_pos_x > TERMINAL_WIDTH) {
+    if ('\n' == s.s[i] || message_pos_x > TERMINAL_WIDTH) {
+      buffer[buffer_pos] = '\0';
+      printf("%s", buffer);
+      buffer_pos = 0;
       message_pos_x = 0;
       message_pos_y++;
+      mvcursor(message_pos_x, message_pos_y);
     }
   }
+  if (0 != buffer_pos) {
+    buffer[buffer_pos] = '\0';
+    printf("%s", buffer);
+  }
   mvcursor(prompt_x, prompt_y);
 }
 
@@ -154,8 +160,10 @@ void msg_sv_print(struct sv s) {
 #define RPL_LUSERCLIENT C_TO_SV("251")
 #define RPL_NOTOPIC C_TO_SV("331")
 #define RPL_TOPIC C_TO_SV("332")
-#define ERR_NOMOTD C_TO_SV("422")
+#define RPL_NAMREPLY C_TO_SV("353")
+#define RPL_ENDOFNAMES C_TO_SV("366")
 
+#define ERR_NOMOTD C_TO_SV("422")
 #define RPL_MOTDSTART C_TO_SV("375")
 #define RPL_MOTD C_TO_SV("372")
 #define RPL_ENDOFMOTD C_TO_SV("376")
@@ -234,6 +242,29 @@ void handle_msg(struct irc_server *server, struct sv msg) {
     msg = sv_trim_left(msg, 1);
     irc_add_message(server, channel, nick, msg);
   }
+  HANDLE_CMD(RPL_NAMREPLY) {
+    struct sv intended_recipient =
+        sv_split_delim(command_parameters, &command_parameters, ' ');
+    struct sv channel_status =
+        sv_split_delim(command_parameters, &command_parameters, ' ');
+    (void)channel_status;
+    struct sv channel =
+        sv_split_delim(command_parameters, &command_parameters, ' ');
+    // Remove the ':'
+    command_parameters = sv_trim_left(command_parameters, 1);
+    if (sv_eq(intended_recipient, server_nick)) {
+      struct sb user_list_message;
+      sb_init(&user_list_message);
+      sb_append(&user_list_message, "Users on ");
+      sb_append_sv(&user_list_message, channel);
+      sb_append(&user_list_message, ": ");
+      sb_append_sv(&user_list_message, command_parameters);
+      irc_add_message(server, channel, C_TO_SV("*"), SB_TO_SV(user_list_message));
+      sb_free(&user_list_message);
+    }
+  }
+  PASSTHROUGH_CHANNEL_CMD(RPL_ENDOFNAMES)
+
   PASSTHROUGH_CHANNEL_CMD(RPL_NOTOPIC)
   PASSTHROUGH_CHANNEL_CMD(RPL_TOPIC)