x86: remove end_pfn in 64bit
and use max_pfn directly.
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/kernel/aperture_64.c b/arch/x86/kernel/aperture_64.c
index 600470d..9f90780 100644
--- a/arch/x86/kernel/aperture_64.c
+++ b/arch/x86/kernel/aperture_64.c
@@ -407,7 +407,9 @@
agp_aper_base == aper_base &&
agp_aper_order == aper_order) {
/* the same between two setting from NB and agp */
- if (!no_iommu && end_pfn > MAX_DMA32_PFN && !printed_gart_size_msg) {
+ if (!no_iommu &&
+ max_pfn > MAX_DMA32_PFN &&
+ !printed_gart_size_msg) {
printk(KERN_ERR "you are using iommu with agp, but GART size is less than 64M\n");
printk(KERN_ERR "please increase GART size in your BIOS setup\n");
printk(KERN_ERR "if BIOS doesn't have that option, contact your HW vendor!\n");
@@ -448,7 +450,7 @@
/* Got the aperture from the AGP bridge */
} else if (swiotlb && !valid_agp) {
/* Do nothing */
- } else if ((!no_iommu && end_pfn > MAX_DMA32_PFN) ||
+ } else if ((!no_iommu && max_pfn > MAX_DMA32_PFN) ||
force_iommu ||
valid_agp ||
fallback_aper_force) {
diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index 1b76b25..3900ff5 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -527,7 +527,7 @@
#ifdef CONFIG_X86_64
if (!found) {
- gapstart = (end_pfn << PAGE_SHIFT) + 1024*1024;
+ gapstart = (max_pfn << PAGE_SHIFT) + 1024*1024;
printk(KERN_ERR "PCI: Warning: Cannot find a gap in the 32bit "
"address range\n"
KERN_ERR "PCI: Unassigned devices with 32bit resource "
diff --git a/arch/x86/kernel/early-quirks.c b/arch/x86/kernel/early-quirks.c
index 84fd9f2..a4665f3 100644
--- a/arch/x86/kernel/early-quirks.c
+++ b/arch/x86/kernel/early-quirks.c
@@ -50,7 +50,7 @@
static void __init via_bugs(int num, int slot, int func)
{
#ifdef CONFIG_GART_IOMMU
- if ((end_pfn > MAX_DMA32_PFN || force_iommu) &&
+ if ((max_pfn > MAX_DMA32_PFN || force_iommu) &&
!gart_iommu_aperture_allowed) {
printk(KERN_INFO
"Looks like a VIA chipset. Disabling IOMMU."
diff --git a/arch/x86/kernel/machine_kexec_64.c b/arch/x86/kernel/machine_kexec_64.c
index 576a03d..7830dc4 100644
--- a/arch/x86/kernel/machine_kexec_64.c
+++ b/arch/x86/kernel/machine_kexec_64.c
@@ -110,7 +110,7 @@
{
pgd_t *level4p;
level4p = (pgd_t *)__va(start_pgtable);
- return init_level4_page(image, level4p, 0, end_pfn << PAGE_SHIFT);
+ return init_level4_page(image, level4p, 0, max_pfn << PAGE_SHIFT);
}
static void set_idt(void *newidt, u16 limit)
diff --git a/arch/x86/kernel/pci-calgary_64.c b/arch/x86/kernel/pci-calgary_64.c
index e28ec49..6959b5c 100644
--- a/arch/x86/kernel/pci-calgary_64.c
+++ b/arch/x86/kernel/pci-calgary_64.c
@@ -1394,7 +1394,7 @@
return;
}
- specified_table_size = determine_tce_table_size(end_pfn * PAGE_SIZE);
+ specified_table_size = determine_tce_table_size(max_pfn * PAGE_SIZE);
for (bus = 0; bus < MAX_PHB_BUS_NUM; bus++) {
struct calgary_bus_info *info = &bus_info[bus];
@@ -1459,7 +1459,7 @@
if (ret) {
printk(KERN_ERR "PCI-DMA: Calgary init failed %d, "
"falling back to no_iommu\n", ret);
- if (end_pfn > MAX_DMA32_PFN)
+ if (max_pfn > MAX_DMA32_PFN)
printk(KERN_ERR "WARNING more than 4GB of memory, "
"32bit PCI may malfunction.\n");
return ret;
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index cb0bdf4..8467ec2 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -75,7 +75,7 @@
void __init dma32_reserve_bootmem(void)
{
unsigned long size, align;
- if (end_pfn <= MAX_DMA32_PFN)
+ if (max_pfn <= MAX_DMA32_PFN)
return;
/*
@@ -94,7 +94,7 @@
static void __init dma32_free_bootmem(void)
{
- if (end_pfn <= MAX_DMA32_PFN)
+ if (max_pfn <= MAX_DMA32_PFN)
return;
if (!dma32_bootmem_ptr)
diff --git a/arch/x86/kernel/pci-gart_64.c b/arch/x86/kernel/pci-gart_64.c
index 021f3c6..d0d18db 100644
--- a/arch/x86/kernel/pci-gart_64.c
+++ b/arch/x86/kernel/pci-gart_64.c
@@ -751,10 +751,10 @@
return;
if (no_iommu ||
- (!force_iommu && end_pfn <= MAX_DMA32_PFN) ||
+ (!force_iommu && max_pfn <= MAX_DMA32_PFN) ||
!gart_iommu_aperture ||
(no_agp && init_k8_gatt(&info) < 0)) {
- if (end_pfn > MAX_DMA32_PFN) {
+ if (max_pfn > MAX_DMA32_PFN) {
printk(KERN_WARNING "More than 4GB of memory "
"but GART IOMMU not available.\n"
KERN_WARNING "falling back to iommu=soft.\n");
diff --git a/arch/x86/kernel/pci-swiotlb_64.c b/arch/x86/kernel/pci-swiotlb_64.c
index 490da7f..82299cd 100644
--- a/arch/x86/kernel/pci-swiotlb_64.c
+++ b/arch/x86/kernel/pci-swiotlb_64.c
@@ -38,7 +38,7 @@
void __init pci_swiotlb_init(void)
{
/* don't initialize swiotlb if iommu=off (no_iommu=1) */
- if (!iommu_detected && !no_iommu && end_pfn > MAX_DMA32_PFN)
+ if (!iommu_detected && !no_iommu && max_pfn > MAX_DMA32_PFN)
swiotlb = 1;
if (swiotlb_force)
swiotlb = 1;
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index 6eced2f..d5d4b04 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -49,11 +49,6 @@
#include <asm/cacheflush.h>
/*
- * PFN of last memory page.
- */
-unsigned long end_pfn;
-
-/*
* end_pfn only includes RAM, while max_pfn_mapped includes all e820 entries.
* The direct mapping extends to max_pfn_mapped, so that we can directly access
* apertures, ACPI and other tables without having to play with fixmaps.
@@ -586,9 +581,9 @@
memset(max_zone_pfns, 0, sizeof(max_zone_pfns));
max_zone_pfns[ZONE_DMA] = MAX_DMA_PFN;
max_zone_pfns[ZONE_DMA32] = MAX_DMA32_PFN;
- max_zone_pfns[ZONE_NORMAL] = end_pfn;
+ max_zone_pfns[ZONE_NORMAL] = max_pfn;
- memory_present(0, 0, end_pfn);
+ memory_present(0, 0, max_pfn);
sparse_init();
free_area_init_nodes(max_zone_pfns);
}
@@ -670,8 +665,8 @@
#else
totalram_pages = free_all_bootmem();
#endif
- reservedpages = end_pfn - totalram_pages -
- absent_pages_in_range(0, end_pfn);
+ reservedpages = max_pfn - totalram_pages -
+ absent_pages_in_range(0, max_pfn);
after_bootmem = 1;
codesize = (unsigned long) &_etext - (unsigned long) &_text;
@@ -690,7 +685,7 @@
printk(KERN_INFO "Memory: %luk/%luk available (%ldk kernel code, "
"%ldk reserved, %ldk data, %ldk init)\n",
(unsigned long) nr_free_pages() << (PAGE_SHIFT-10),
- end_pfn << (PAGE_SHIFT-10),
+ max_pfn << (PAGE_SHIFT-10),
codesize >> 10,
reservedpages << (PAGE_SHIFT-10),
datasize >> 10,
@@ -784,7 +779,7 @@
#endif
unsigned long pfn = phys >> PAGE_SHIFT;
- if (pfn >= end_pfn) {
+ if (pfn >= max_pfn) {
/*
* This can happen with kdump kernels when accessing
* firmware tables:
diff --git a/arch/x86/mm/k8topology_64.c b/arch/x86/mm/k8topology_64.c
index 317573e..41f1b5c 100644
--- a/arch/x86/mm/k8topology_64.c
+++ b/arch/x86/mm/k8topology_64.c
@@ -143,8 +143,8 @@
limit |= (1<<24)-1;
limit++;
- if (limit > end_pfn << PAGE_SHIFT)
- limit = end_pfn << PAGE_SHIFT;
+ if (limit > max_pfn << PAGE_SHIFT)
+ limit = max_pfn << PAGE_SHIFT;
if (limit <= base)
continue;
diff --git a/arch/x86/mm/numa_64.c b/arch/x86/mm/numa_64.c
index 316e5f9..b432d57 100644
--- a/arch/x86/mm/numa_64.c
+++ b/arch/x86/mm/numa_64.c
@@ -86,7 +86,7 @@
addr = 0x8000;
nodemap_size = round_up(sizeof(s16) * memnodemapsize, L1_CACHE_BYTES);
- nodemap_addr = find_e820_area(addr, end_pfn<<PAGE_SHIFT,
+ nodemap_addr = find_e820_area(addr, max_pfn<<PAGE_SHIFT,
nodemap_size, L1_CACHE_BYTES);
if (nodemap_addr == -1UL) {
printk(KERN_ERR
@@ -579,7 +579,7 @@
memset(max_zone_pfns, 0, sizeof(max_zone_pfns));
max_zone_pfns[ZONE_DMA] = MAX_DMA_PFN;
max_zone_pfns[ZONE_DMA32] = MAX_DMA32_PFN;
- max_zone_pfns[ZONE_NORMAL] = end_pfn;
+ max_zone_pfns[ZONE_NORMAL] = max_pfn;
sparse_memory_present_with_active_regions(MAX_NUMNODES);
sparse_init();
diff --git a/arch/x86/mm/srat_64.c b/arch/x86/mm/srat_64.c
index b67f5a1..0fd67b8 100644
--- a/arch/x86/mm/srat_64.c
+++ b/arch/x86/mm/srat_64.c
@@ -299,7 +299,7 @@
pxmram = 0;
}
- e820ram = end_pfn - absent_pages_in_range(0, end_pfn);
+ e820ram = max_pfn - absent_pages_in_range(0, max_pfn);
/* We seem to lose 3 pages somewhere. Allow a bit of slack. */
if ((long)(e820ram - pxmram) >= 1*1024*1024) {
printk(KERN_ERR
diff --git a/arch/x86/power/hibernate_64.c b/arch/x86/power/hibernate_64.c
index b542355..6dd000d 100644
--- a/arch/x86/power/hibernate_64.c
+++ b/arch/x86/power/hibernate_64.c
@@ -83,7 +83,7 @@
/* Set up the direct mapping from scratch */
start = (unsigned long)pfn_to_kaddr(0);
- end = (unsigned long)pfn_to_kaddr(end_pfn);
+ end = (unsigned long)pfn_to_kaddr(max_pfn);
for (; start < end; start = next) {
pud_t *pud = (pud_t *)get_safe_page(GFP_ATOMIC);