From 3448097fccdce4ea8f0fcad4f37f502a8cd72e68 Mon Sep 17 00:00:00 2001
From: Linus Torvalds <torvalds@g5.osdl.org>
Date: Sun, 25 Jun 2006 18:41:00 -0700
Subject: Revert "swsusp special saveable pages support" commits

This reverts commits

  3e3318dee0878d42ed62a19c292a2ac284135db3 [PATCH] swsusp: x86_64 mark special saveable/unsaveable pages
  b6370d96e09944c6e3ae8d5743ca8a8ab1f79f6c [PATCH] swsusp: i386 mark special saveable/unsaveable pages
  ce4ab0012b32c1a4a1d6e934aeb73bf3151c48d9 [PATCH] swsusp: add architecture special saveable pages support

because not only do they apparently cause page faults on x86, the
infrastructure doesn't compile on powerpc.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/i386/kernel/setup.c | 106 -----------------------------------------------
 1 file changed, 106 deletions(-)

(limited to 'arch/i386')

diff --git a/arch/i386/kernel/setup.c b/arch/i386/kernel/setup.c
index 6c16398..6bef927 100644
--- a/arch/i386/kernel/setup.c
+++ b/arch/i386/kernel/setup.c
@@ -48,7 +48,6 @@
 #include <linux/crash_dump.h>
 #include <linux/dmi.h>
 #include <linux/pfn.h>
-#include <linux/suspend.h>
 
 #include <video/edid.h>
 
@@ -1427,111 +1426,6 @@ static void set_mca_bus(int x)
 static void set_mca_bus(int x) { }
 #endif
 
-#ifdef CONFIG_SOFTWARE_SUSPEND
-static void __init mark_nosave_page_range(unsigned long start, unsigned long end)
-{
-	struct page *page;
-	while (start <= end) {
-		page = pfn_to_page(start);
-		SetPageNosave(page);
-		start++;
-	}
-}
-
-static void __init e820_nosave_reserved_pages(void)
-{
-	int i;
-	unsigned long r_start = 0, r_end = 0;
-
-	/* Assume e820 map is sorted */
-	for (i = 0; i < e820.nr_map; i++) {
-		struct e820entry *ei = &e820.map[i];
-		unsigned long start, end;
-
-		start = PFN_DOWN(ei->addr);
-		end = PFN_UP(ei->addr + ei->size);
-		if (start >= end)
-			continue;
-		if (ei->type == E820_RESERVED)
-			continue;
-		r_end = start;
-		/*
-		 * Highmem 'Reserved' pages are marked as reserved, swsusp
-		 * will not save/restore them, so we ignore these pages here.
-		 */
-		if (r_end > max_low_pfn)
-			r_end = max_low_pfn;
-		if (r_end > r_start)
-			mark_nosave_page_range(r_start, r_end-1);
-		if (r_end >= max_low_pfn)
-			break;
-		r_start = end;
-	}
-}
-
-static void __init e820_save_acpi_pages(void)
-{
-	int i;
-
-	/* Assume e820 map is sorted */
-	for (i = 0; i < e820.nr_map; i++) {
-		struct e820entry *ei = &e820.map[i];
-		unsigned long start, end;
-
-		start = ei->addr;
-		end = ei->addr + ei->size;
-		if (start >= end)
-			continue;
-		if (ei->type != E820_ACPI && ei->type != E820_NVS)
-			continue;
-		/*
-		 * If the region is below max_low_pfn, it will be
-		 * saved/restored by swsusp follow 'RAM' type.
-		 */
-		if (start < (max_low_pfn << PAGE_SHIFT))
-			start = max_low_pfn << PAGE_SHIFT;
-		/*
-		 * Highmem pages (ACPI NVS/Data) are reserved, but swsusp
-		 * highmem save/restore will not save/restore them. We marked
-		 * them as arch saveable pages here
-		 */
-		if (end > start)
-			swsusp_add_arch_pages(start, end);
-	}
-}
-
-extern char __start_rodata, __end_rodata;
-/*
- * BIOS reserved region/hole - no save/restore
- * ACPI NVS - save/restore
- * ACPI Data - this is a little tricky, the mem could be used by OS after OS
- * reads tables from the region, but anyway save/restore the memory hasn't any
- * side effect and Linux runtime module load/unload might use it.
- * kernel rodata - no save/restore (kernel rodata isn't changed)
- */
-static int __init mark_nosave_pages(void)
-{
-	unsigned long pfn_start, pfn_end;
-
-	/* FIXME: provide a version for efi BIOS */
-	if (efi_enabled)
-		return 0;
-	/* BIOS reserved regions & holes */
-	e820_nosave_reserved_pages();
-
-	/* kernel rodata */
-	pfn_start = PFN_UP(virt_to_phys(&__start_rodata));
-	pfn_end = PFN_DOWN(virt_to_phys(&__end_rodata));
-	mark_nosave_page_range(pfn_start, pfn_end-1);
-
-	/* record ACPI Data/NVS as saveable */
-	e820_save_acpi_pages();
-
-	return 0;
-}
-core_initcall(mark_nosave_pages);
-#endif
-
 /*
  * Determine if we were loaded by an EFI loader.  If so, then we have also been
  * passed the efi memmap, systab, etc., so we should use these data structures
-- 
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