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>

1 files changed, 4 insertions, 2 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) {