x86/boot/KASLR: Rename process_e820_entry() into process_mem_region()

Now process_e820_entry() is not limited to e820 entry processing, rename
it to process_mem_region(). And adjust the code comment accordingly.
Signed-off-by: Baoquan He <bhe@redhat.com>
Acked-by: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: fanc.fnst@cn.fujitsu.com
Cc: izumi.taku@jp.fujitsu.com
Cc: matt@codeblueprint.co.uk
Cc: thgarnie@google.com
Link: http://lkml.kernel.org/r/1499603862-11516-4-git-send-email-bhe@redhat.comSigned-off-by: Ingo Molnar <mingo@kernel.org>

arch/x86/boot/compressed/kaslr.c

@@ -479,7 +479,7 @@ static unsigned long slots_fetch_random(void)
 	return 0;
 }
 
-static void process_e820_entry(struct mem_vector *entry,
+static void process_mem_region(struct mem_vector *entry,
 			       unsigned long minimum,
 			       unsigned long image_size)
 {
@@ -517,7 +517,7 @@ static void process_e820_entry(struct mem_vector *entry,
 		/* Potentially raise address to meet alignment needs. */
 		region.start = ALIGN(region.start, CONFIG_PHYSICAL_ALIGN);
 
-		/* Did we raise the address above this e820 region? */
+		/* Did we raise the address above the passed in memory entry? */
 		if (region.start > cur_entry.start + cur_entry.size)
 			return;
 
@@ -573,7 +573,7 @@ static void process_e820_entries(unsigned long minimum,
 			continue;
 		region.start = entry->addr;
 		region.size = entry->size;
-		process_e820_entry(&region, minimum, image_size);
+		process_mem_region(&region, minimum, image_size);
 		if (slot_area_index == MAX_SLOT_AREA) {
 			debug_putstr("Aborted e820 scan (slot_areas full)!\n");
 			break;