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>

8 files changed, 14 insertions, 12 deletions

diff --git a/arch/x86/kernel/aperture_64.c b/arch/x86/kernel/aperture_64.c
index 600470d464fa..9f907806c1a5 100644
--- a/arch/x86/kernel/aperture_64.c
+++ b/arch/x86/kernel/aperture_64.c
@@ -407,7 +407,9 @@ void __init gart_iommu_hole_init(void)
                                     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 @@ out:
                 /* 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 1b76b25b4d9a..3900ff51bc68 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -527,7 +527,7 @@ __init void e820_setup_gap(void)
 
 #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 84fd9f2a28ff..a4665f37cfc5 100644
--- a/arch/x86/kernel/early-quirks.c
+++ b/arch/x86/kernel/early-quirks.c
@@ -50,7 +50,7 @@ static void __init fix_hypertransport_config(int num, int slot, int func)
 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 576a03db4511..7830dc4a8380 100644
--- a/arch/x86/kernel/machine_kexec_64.c
+++ b/arch/x86/kernel/machine_kexec_64.c
@@ -110,7 +110,7 @@ static int init_pgtable(struct kimage *image, unsigned long start_pgtable)
 {
         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 e28ec497e142..6959b5c45df4 100644
--- a/arch/x86/kernel/pci-calgary_64.c
+++ b/arch/x86/kernel/pci-calgary_64.c
@@ -1394,7 +1394,7 @@ void __init detect_calgary(void)
                 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 @@ int __init calgary_iommu_init(void)
         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 cb0bdf440715..8467ec2320f1 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -75,7 +75,7 @@ early_param("dma32_size", parse_dma32_size_opt);
 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 @@ void __init dma32_reserve_bootmem(void)
 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 021f3c684a62..d0d18db5d2a4 100644
--- a/arch/x86/kernel/pci-gart_64.c
+++ b/arch/x86/kernel/pci-gart_64.c
@@ -751,10 +751,10 @@ void __init gart_iommu_init(void)
                 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 490da7f4b8d0..82299cd1d04d 100644
--- a/arch/x86/kernel/pci-swiotlb_64.c
+++ b/arch/x86/kernel/pci-swiotlb_64.c
@@ -38,7 +38,7 @@ const struct dma_mapping_ops swiotlb_dma_ops = {
 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;