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Commit a91eea6d authored by Thomas Gleixner's avatar Thomas Gleixner
Browse files

x86: fix shadow variables of global end_pnf in e820_64.c 



Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 7f028bc0

arch/x86/kernel/e820_64.c

+18 −18
Original line number Diff line number Diff line
@@ -51,21 +51,21 @@ static unsigned long __initdata end_user_pfn = MAXMEM>>PAGE_SHIFT; 
 */

unsigned long __init e820_end_of_ram(void)

{

	unsigned long end_pfn;

	unsigned long last_pfn;



	end_pfn = find_max_pfn_with_active_regions();

	last_pfn = find_max_pfn_with_active_regions();



	if (end_pfn > max_pfn_mapped)

		max_pfn_mapped = end_pfn;

	if (last_pfn > max_pfn_mapped)

		max_pfn_mapped = last_pfn;

	if (max_pfn_mapped > MAXMEM>>PAGE_SHIFT)

		max_pfn_mapped = MAXMEM>>PAGE_SHIFT;

	if (end_pfn > end_user_pfn)

		end_pfn = end_user_pfn;

	if (end_pfn > max_pfn_mapped)

		end_pfn = max_pfn_mapped;

	if (last_pfn > end_user_pfn)

		last_pfn = end_user_pfn;

	if (last_pfn > max_pfn_mapped)

		last_pfn = max_pfn_mapped;



	printk(KERN_INFO "max_pfn_mapped = %lu\n", max_pfn_mapped);

	return end_pfn;

	return last_pfn;

}



/*
@@ -124,12 +124,12 @@ void __init e820_mark_nosave_regions(void) 
}



/*

 * Finds an active region in the address range from start_pfn to end_pfn and

 * Finds an active region in the address range from start_pfn to last_pfn and

 * returns its range in ei_startpfn and ei_endpfn for the e820 entry.

 */

static int __init e820_find_active_region(const struct e820entry *ei,

					  unsigned long start_pfn,

					  unsigned long end_pfn,

					  unsigned long last_pfn,

					  unsigned long *ei_startpfn,

					  unsigned long *ei_endpfn)

{
@@ -146,14 +146,14 @@ static int __init e820_find_active_region(const struct e820entry *ei, 


	/* Skip if map is outside the node */

	if (ei->type != E820_RAM || *ei_endpfn <= start_pfn ||

				    *ei_startpfn >= end_pfn)

				    *ei_startpfn >= last_pfn)

		return 0;



	/* Check for overlaps */

	if (*ei_startpfn < start_pfn)

		*ei_startpfn = start_pfn;

	if (*ei_endpfn > end_pfn)

		*ei_endpfn = end_pfn;

	if (*ei_endpfn > last_pfn)

		*ei_endpfn = last_pfn;



	/* Obey end_user_pfn to save on memmap */

	if (*ei_startpfn >= end_user_pfn)
@@ -167,7 +167,7 @@ static int __init e820_find_active_region(const struct e820entry *ei, 
/* Walk the e820 map and register active regions within a node */

void __init

e820_register_active_regions(int nid, unsigned long start_pfn,

							unsigned long end_pfn)

							unsigned long last_pfn)

{

	unsigned long ei_startpfn;

	unsigned long ei_endpfn;
@@ -175,7 +175,7 @@ e820_register_active_regions(int nid, unsigned long start_pfn, 


	for (i = 0; i < e820.nr_map; i++)

		if (e820_find_active_region(&e820.map[i],

					    start_pfn, end_pfn,

					    start_pfn, last_pfn,

					    &ei_startpfn, &ei_endpfn))

			add_active_range(nid, ei_startpfn, ei_endpfn);

}
@@ -188,13 +188,13 @@ e820_register_active_regions(int nid, unsigned long start_pfn, 
unsigned long __init e820_hole_size(unsigned long start, unsigned long end)

{

	unsigned long start_pfn = start >> PAGE_SHIFT;

	unsigned long end_pfn = end >> PAGE_SHIFT;

	unsigned long last_pfn = end >> PAGE_SHIFT;

	unsigned long ei_startpfn, ei_endpfn, ram = 0;

	int i;



	for (i = 0; i < e820.nr_map; i++) {

		if (e820_find_active_region(&e820.map[i],

					    start_pfn, end_pfn,

					    start_pfn, last_pfn,

					    &ei_startpfn, &ei_endpfn))

			ram += ei_endpfn - ei_startpfn;

	}