linux 2.6.16.38 w/ vs2.0.3-rc1

[linux-2.6.git] / arch / i386 / kernel / machine_kexec.c

diff --git a/arch/i386/kernel/machine_kexec.c b/arch/i386/kernel/machine_kexec.c
index 6b1ae6b..f73d737 100644 (file)
--- a/arch/i386/kernel/machine_kexec.c
+++ b/arch/i386/kernel/machine_kexec.c
@@ -133,9 +133,9 @@ typedef asmlinkage NORET_TYPE void (*relocate_new_kernel_t)(
                                        unsigned long start_address,
                                        unsigned int has_pae) ATTRIB_NORET;
 
-extern const unsigned char relocate_new_kernel[];
+const extern unsigned char relocate_new_kernel[];
 extern void relocate_new_kernel_end(void);
-extern const unsigned int relocate_new_kernel_size;
+const extern unsigned int relocate_new_kernel_size;
 
 /*
  * A architecture hook called to validate the
@@ -189,11 +189,14 @@ NORET_TYPE void machine_kexec(struct kimage *image)
        memcpy((void *)reboot_code_buffer, relocate_new_kernel,
                                                relocate_new_kernel_size);
 
-       /* The segment registers are funny things, they have both a
-        * visible and an invisible part.  Whenever the visible part is
-        * set to a specific selector, the invisible part is loaded
-        * with from a table in memory.  At no other time is the
-        * descriptor table in memory accessed.
+       /* The segment registers are funny things, they are
+        * automatically loaded from a table, in memory wherever you
+        * set them to a specific selector, but this table is never
+        * accessed again you set the segment to a different selector.
+        *
+        * The more common model is are caches where the behide
+        * the scenes work is done, but is also dropped at arbitrary
+        * times.
         *
         * I take advantage of this here by force loading the
         * segments, before I zap the gdt with an invalid value.