3 files changed, 6 insertions, 3 deletions

diff --git a/arch/x86/mm/discontig_32.c b/arch/x86/mm/discontig_32.c
index c394ca0720b8..8e25e06ff730 100644
--- a/arch/x86/mm/discontig_32.c
+++ b/arch/x86/mm/discontig_32.c
@@ -324,7 +324,6 @@ unsigned long __init setup_memory(void)
          * this space and use it to adjust the boundary between ZONE_NORMAL
          * and ZONE_HIGHMEM.
          */
-        find_max_pfn();
         get_memcfg_numa();
 
         kva_pages = calculate_numa_remap_pages();
diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
index 4afaba0ed722..794895c6dcc9 100644
--- a/arch/x86/mm/ioremap.c
+++ b/arch/x86/mm/ioremap.c
@@ -137,7 +137,11 @@ static void __iomem *__ioremap(resource_size_t phys_addr, unsigned long size,
         switch (mode) {
         case IOR_MODE_UNCACHED:
         default:
-                prot = PAGE_KERNEL_NOCACHE;
+                /*
+                 * FIXME: we will use UC MINUS for now, as video fb drivers
+                 * depend on it. Upcoming ioremap_wc() will fix this behavior.
+                 */
+                prot = PAGE_KERNEL_UC_MINUS;
                 break;
         case IOR_MODE_CACHED:
                 prot = PAGE_KERNEL;
diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c
index 14e48b5a94ba..7b79f6be4e7d 100644
--- a/arch/x86/mm/pageattr.c
+++ b/arch/x86/mm/pageattr.c
@@ -771,7 +771,7 @@ static inline int change_page_attr_clear(unsigned long addr, int numpages,
 int set_memory_uc(unsigned long addr, int numpages)
 {
         return change_page_attr_set(addr, numpages,
-                                    __pgprot(_PAGE_PCD | _PAGE_PWT));
+                                    __pgprot(_PAGE_PCD));
 }
 EXPORT_SYMBOL(set_memory_uc);