From: Zhimin Gu <kookoo.gu@intel.com>
Date: Fri, 21 Sep 2018 06:27:51 +0000 (+0800)
Subject: x86-32, hibernate: Use temp_pgt as the temporary page table
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=7c0a982750b3f8bc6636e8086ac4d8b7775e90f6;p=linux.git

x86-32, hibernate: Use temp_pgt as the temporary page table

This is to reuse the temp_pgt for both 32bit and 64bit
system.

No intentional behavior change.

Signed-off-by: Zhimin Gu <kookoo.gu@intel.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Chen Yu <yu.c.chen@intel.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---

diff --git a/arch/x86/power/hibernate_32.c b/arch/x86/power/hibernate_32.c
index f82fbd279d080..a44bdada4e4e9 100644
--- a/arch/x86/power/hibernate_32.c
+++ b/arch/x86/power/hibernate_32.c
@@ -156,6 +156,8 @@ asmlinkage int swsusp_arch_resume(void)
 	if (error)
 		return error;
 
+	temp_pgt = __pa(resume_pg_dir);
+
 	/* We have got enough memory and from now on we cannot recover */
 	restore_image();
 	return 0;
diff --git a/arch/x86/power/hibernate_asm_32.S b/arch/x86/power/hibernate_asm_32.S
index 671d38d0d9313..f0627cf30a366 100644
--- a/arch/x86/power/hibernate_asm_32.S
+++ b/arch/x86/power/hibernate_asm_32.S
@@ -33,8 +33,7 @@ ENDPROC(swsusp_arch_suspend)
 
 ENTRY(restore_image)
 	movl	mmu_cr4_features, %ecx
-	movl	resume_pg_dir, %eax
-	subl	$__PAGE_OFFSET, %eax
+	movl	temp_pgt, %eax
 	movl	%eax, %cr3
 
 	jecxz	1f	# cr4 Pentium and higher, skip if zero