x86/boot/e820: Rename e820_table_saved to e820_table_firmware and improve the description

So the 'e820_table_saved' is a bit of a misnomer that hides its real purpose.

At first sight the name suggests that it's some sort save/restore mechanism,
as this is how we typically name such facilities in the kernel.

But that is not so, e820_table_saved is the original firmware version of the
e820 table, not modified by the kernel. This table is displayed in the
/sys/firmware/memmap file, and it's also used by the hibernation code to
calculate a physical memory layout MD5 fingerprint checksum which is
invariant of the kernel.

So rename it to 'e820_table_firmware' and update all the comments to better
describe the main e820 data strutures.

Also rename:

  'initial_e820_table_saved'  =>  'e820_table_firmware_init'
  'e820_update_range_saved'   =>  'e820_update_range_firmware'

... to better match the new nomenclature.

No change in functionality.

Cc: Alex Thorlton <athorlton@sgi.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Huang, Ying <ying.huang@intel.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul Jackson <pj@sgi.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Tejun Heo <tj@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Wei Yang <richard.weiyang@gmail.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/arch/x86/power/hibernate_64.c b/arch/x86/power/hibernate_64.c
index 1bfda425879c..053801b022dd 100644
--- a/arch/x86/power/hibernate_64.c
+++ b/arch/x86/power/hibernate_64.c
@@ -231,7 +231,7 @@ static int get_e820_md5(struct e820_table *table, void *buf)
 
 static void hibernation_e820_save(void *buf)
 {
-	get_e820_md5(e820_table_saved, buf);
+	get_e820_md5(e820_table_firmware, buf);
 }
 
 static bool hibernation_e820_mismatch(void *buf)
@@ -244,7 +244,7 @@ static bool hibernation_e820_mismatch(void *buf)
 	if (!memcmp(result, buf, MD5_DIGEST_SIZE))
 		return false;
 
-	ret = get_e820_md5(e820_table_saved, result);
+	ret = get_e820_md5(e820_table_firmware, result);
 	if (ret)
 		return true;