From 9d21e1352224f657fbe63fdbbb522adcd1307a44 Mon Sep 17 00:00:00 2001 From: Michael Brown Date: Tue, 26 Aug 2014 14:46:14 +0100 Subject: [PATCH] [prefix] Halt system without burning CPU if we cannot access the payload Signed-off-by: Michael Brown --- src/arch/i386/prefix/libprefix.S | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/src/arch/i386/prefix/libprefix.S b/src/arch/i386/prefix/libprefix.S index 13da652e..aae07354 100644 --- a/src/arch/i386/prefix/libprefix.S +++ b/src/arch/i386/prefix/libprefix.S @@ -748,7 +748,10 @@ a20_death_message: call print_hex_dword movw $payload_death_message, %si call print_message -2: jmp 2b +2: /* Halt system */ + cli + hlt + jmp 2b .section ".prefix.data", "aw", @progbits payload_death_message: .asciz "\nPayload inaccessible - cannot continue\n"