x86 setup: handle boot loaders which set up the stack incorrectly
Apparently some specific versions of LILO enter the kernel with a
stack pointer that doesn't match the rest of the segments. Make our
best attempt at untangling the resulting mess.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
diff --git a/arch/x86/boot/boot.h b/arch/x86/boot/boot.h
index 5f9a2e7..887874f 100644
--- a/arch/x86/boot/boot.h
+++ b/arch/x86/boot/boot.h
@@ -17,6 +17,8 @@
#ifndef BOOT_BOOT_H
#define BOOT_BOOT_H
+#define STACK_SIZE 512 /* Minimum number of bytes for stack */
+
#ifndef __ASSEMBLY__
#include <stdarg.h>
@@ -198,8 +200,6 @@
}
/* Heap -- available for dynamic lists. */
-#define STACK_SIZE 512 /* Minimum number of bytes for stack */
-
extern char _end[];
extern char *HEAP;
extern char *heap_end;