46 files changed, 224 insertions, 224 deletions

diff --git a/arch/alpha/kernel/process.c b/arch/alpha/kernel/process.c
index f238370c907d..8d0097f10208 100644
--- a/arch/alpha/kernel/process.c
+++ b/arch/alpha/kernel/process.c
@@ -93,8 +93,8 @@ common_shutdown_1(void *generic_ptr)
         if (cpuid != boot_cpuid) {
                 flags |= 0x00040000UL; /* "remain halted" */
                 *pflags = flags;
-                cpu_clear(cpuid, cpu_present_map);
-                cpu_clear(cpuid, cpu_possible_map);
+                set_cpu_present(cpuid, false);
+                set_cpu_possible(cpuid, false);
                 halt();
         }
 #endif
@@ -120,8 +120,8 @@ common_shutdown_1(void *generic_ptr)
 
 #ifdef CONFIG_SMP
         /* Wait for the secondaries to halt. */
-        cpu_clear(boot_cpuid, cpu_present_map);
-        cpu_clear(boot_cpuid, cpu_possible_map);
+        set_cpu_present(boot_cpuid, false);
+        set_cpu_possible(boot_cpuid, false);
         while (cpus_weight(cpu_present_map))
                 barrier();
 #endif
diff --git a/arch/alpha/kernel/smp.c b/arch/alpha/kernel/smp.c
index 00f1dc3dfd5f..b1fe5674c3a1 100644
--- a/arch/alpha/kernel/smp.c
+++ b/arch/alpha/kernel/smp.c
@@ -120,12 +120,12 @@ void __cpuinit
 smp_callin(void)
 {
         int cpuid = hard_smp_processor_id();
-        cpumask_t mask = cpu_online_map;
 
-        if (cpu_test_and_set(cpuid, mask)) {
+        if (cpu_online(cpuid)) {
                 printk("??, cpu 0x%x already present??\n", cpuid);
                 BUG();
         }
+        set_cpu_online(cpuid, true);
 
         /* Turn on machine checks.  */
         wrmces(7);
@@ -436,8 +436,8 @@ setup_smp(void)
                                 ((char *)cpubase + i*hwrpb->processor_size);
                         if ((cpu->flags & 0x1cc) == 0x1cc) {
                                 smp_num_probed++;
-                                cpu_set(i, cpu_possible_map);
-                                cpu_set(i, cpu_present_map);
+                                set_cpu_possible(i, true);
+                                set_cpu_present(i, true);
                                 cpu->pal_revision = boot_cpu_palrev;
                         }
 
@@ -470,8 +470,8 @@ smp_prepare_cpus(unsigned int max_cpus)
 
         /* Nothing to do on a UP box, or when told not to.  */
         if (smp_num_probed == 1 || max_cpus == 0) {
-                cpu_possible_map = cpumask_of_cpu(boot_cpuid);
-                cpu_present_map = cpumask_of_cpu(boot_cpuid);
+                init_cpu_possible(cpumask_of(boot_cpuid));
+                init_cpu_present(cpumask_of(boot_cpuid));
                 printk(KERN_INFO "SMP mode deactivated.\n");
                 return;
         }
diff --git a/arch/ia64/include/asm/kvm.h b/arch/ia64/include/asm/kvm.h
index 68aa6da807c1..bfa86b6af7cd 100644
--- a/arch/ia64/include/asm/kvm.h
+++ b/arch/ia64/include/asm/kvm.h
@@ -25,6 +25,10 @@
 
 #include <linux/ioctl.h>
 
+/* Select x86 specific features in <linux/kvm.h> */
+#define __KVM_HAVE_IOAPIC
+#define __KVM_HAVE_DEVICE_ASSIGNMENT
+
 /* Architectural interrupt line count. */
 #define KVM_NR_INTERRUPTS 256
 
diff --git a/arch/ia64/include/asm/mmzone.h b/arch/ia64/include/asm/mmzone.h
index 34efe88eb849..f2ca32069b3f 100644
--- a/arch/ia64/include/asm/mmzone.h
+++ b/arch/ia64/include/asm/mmzone.h
@@ -31,10 +31,6 @@ static inline int pfn_to_nid(unsigned long pfn)
 #endif
 }
 
-#ifdef CONFIG_HAVE_ARCH_EARLY_PFN_TO_NID
-extern int early_pfn_to_nid(unsigned long pfn);
-#endif
-
 #ifdef CONFIG_IA64_DIG /* DIG systems are small */
 # define MAX_PHYSNODE_ID        8
 # define NR_NODE_MEMBLKS        (MAX_NUMNODES * 8)
diff --git a/arch/ia64/kvm/kvm-ia64.c b/arch/ia64/kvm/kvm-ia64.c
index 4e586f6110aa..28f982045f29 100644
--- a/arch/ia64/kvm/kvm-ia64.c
+++ b/arch/ia64/kvm/kvm-ia64.c
@@ -1337,6 +1337,10 @@ static void kvm_release_vm_pages(struct kvm *kvm)
         }
 }
 
+void kvm_arch_sync_events(struct kvm *kvm)
+{
+}
+
 void kvm_arch_destroy_vm(struct kvm *kvm)
 {
         kvm_iommu_unmap_guest(kvm);
diff --git a/arch/ia64/kvm/process.c b/arch/ia64/kvm/process.c
index 552d07724207..230eae482f32 100644
--- a/arch/ia64/kvm/process.c
+++ b/arch/ia64/kvm/process.c
@@ -455,13 +455,18 @@ fpswa_ret_t vmm_fp_emulate(int fp_fault, void *bundle, unsigned long *ipsr,
         if (!vmm_fpswa_interface)
                 return (fpswa_ret_t) {-1, 0, 0, 0};
 
-        /*
-         * Just let fpswa driver to use hardware fp registers.
-         * No fp register is valid in memory.
-         */
         memset(&fp_state, 0, sizeof(fp_state_t));
 
         /*
+         * compute fp_state.  only FP registers f6 - f11 are used by the
+         * vmm, so set those bits in the mask and set the low volatile
+         * pointer to point to these registers.
+         */
+        fp_state.bitmask_low64 = 0xfc0;  /* bit6..bit11 */
+
+        fp_state.fp_state_low_volatile = (fp_state_low_volatile_t *) &regs->f6;
+
+   /*
          * unsigned long (*EFI_FPSWA) (
          *      unsigned long    trap_type,
          *      void             *Bundle,
@@ -545,10 +550,6 @@ void reflect_interruption(u64 ifa, u64 isr, u64 iim,
                 status = vmm_handle_fpu_swa(0, regs, isr);
                 if (!status)
                         return ;
-                else if (-EAGAIN == status) {
-                        vcpu_decrement_iip(vcpu);
-                        return ;
-                }
                 break;
         }
 
diff --git a/arch/ia64/mm/numa.c b/arch/ia64/mm/numa.c
index b73bf1838e57..3efea7d0a351 100644
--- a/arch/ia64/mm/numa.c
+++ b/arch/ia64/mm/numa.c
@@ -58,7 +58,7 @@ paddr_to_nid(unsigned long paddr)
  * SPARSEMEM to allocate the SPARSEMEM sectionmap on the NUMA node where
  * the section resides.
  */
-int early_pfn_to_nid(unsigned long pfn)
+int __meminit __early_pfn_to_nid(unsigned long pfn)
 {
         int i, section = pfn >> PFN_SECTION_SHIFT, ssec, esec;
 
@@ -70,7 +70,7 @@ int early_pfn_to_nid(unsigned long pfn)
                         return node_memblk[i].nid;
         }
 
-        return 0;
+        return -1;
 }
 
 #ifdef CONFIG_MEMORY_HOTPLUG
diff --git a/arch/powerpc/include/asm/pgtable-4k.h b/arch/powerpc/include/asm/pgtable-4k.h
index 6b18ba9d2d85..1dbca4e7de67 100644
--- a/arch/powerpc/include/asm/pgtable-4k.h
+++ b/arch/powerpc/include/asm/pgtable-4k.h
@@ -60,7 +60,7 @@
 /* It should be preserving the high 48 bits and then specifically */
 /* preserving _PAGE_SECONDARY | _PAGE_GROUP_IX */
 #define _PAGE_CHG_MASK  (PAGE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY | \
-                         _PAGE_HPTEFLAGS)
+                         _PAGE_HPTEFLAGS | _PAGE_SPECIAL)
 
 /* Bits to mask out from a PMD to get to the PTE page */
 #define PMD_MASKED_BITS         0
diff --git a/arch/powerpc/include/asm/pgtable-64k.h b/arch/powerpc/include/asm/pgtable-64k.h
index 07b0d8f09cb6..7389003349a6 100644
--- a/arch/powerpc/include/asm/pgtable-64k.h
+++ b/arch/powerpc/include/asm/pgtable-64k.h
@@ -114,7 +114,7 @@ static inline struct subpage_prot_table *pgd_subpage_prot(pgd_t *pgd)
  * pgprot changes
  */
 #define _PAGE_CHG_MASK  (PTE_RPN_MASK | _PAGE_HPTEFLAGS | _PAGE_DIRTY | \
-                         _PAGE_ACCESSED)
+                         _PAGE_ACCESSED | _PAGE_SPECIAL)
 
 /* Bits to mask out from a PMD to get to the PTE page */
 #define PMD_MASKED_BITS         0x1ff
diff --git a/arch/powerpc/include/asm/pgtable-ppc32.h b/arch/powerpc/include/asm/pgtable-ppc32.h
index f69a4d977729..820b5f0a35ce 100644
--- a/arch/powerpc/include/asm/pgtable-ppc32.h
+++ b/arch/powerpc/include/asm/pgtable-ppc32.h
@@ -429,7 +429,8 @@ extern int icache_44x_need_flush;
 #define PMD_PAGE_SIZE(pmd)      bad_call_to_PMD_PAGE_SIZE()
 #endif
 
-#define _PAGE_CHG_MASK  (PAGE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY)
+#define _PAGE_CHG_MASK  (PAGE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY | \
+                         _PAGE_SPECIAL)
 
 
 #define PAGE_PROT_BITS  (_PAGE_GUARDED | _PAGE_COHERENT | _PAGE_NO_CACHE | \
diff --git a/arch/powerpc/kernel/align.c b/arch/powerpc/kernel/align.c
index 5af4e9b2dbe2..ada06924a423 100644
--- a/arch/powerpc/kernel/align.c
+++ b/arch/powerpc/kernel/align.c
@@ -646,11 +646,16 @@ static int emulate_vsx(unsigned char __user *addr, unsigned int reg,
                        unsigned int areg, struct pt_regs *regs,
                        unsigned int flags, unsigned int length)
 {
-        char *ptr = (char *) &current->thread.TS_FPR(reg);
+        char *ptr;
         int ret = 0;
 
         flush_vsx_to_thread(current);
 
+        if (reg < 32)
+                ptr = (char *) &current->thread.TS_FPR(reg);
+        else
+                ptr = (char *) &current->thread.vr[reg - 32];
+
         if (flags & ST)
                 ret = __copy_to_user(addr, ptr, length);
         else {
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index 2822c8ccfaaf..5f81256287f5 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -125,6 +125,10 @@ static void kvmppc_free_vcpus(struct kvm *kvm)
         }
 }
 
+void kvm_arch_sync_events(struct kvm *kvm)
+{
+}
+
 void kvm_arch_destroy_vm(struct kvm *kvm)
 {
         kvmppc_free_vcpus(kvm);
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index 7393bd76d698..5ac08b8ab654 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -19,6 +19,7 @@
 #include <linux/notifier.h>
 #include <linux/lmb.h>
 #include <linux/of.h>
+#include <linux/pfn.h>
 #include <asm/sparsemem.h>
 #include <asm/prom.h>
 #include <asm/system.h>
@@ -882,7 +883,7 @@ static void mark_reserved_regions_for_nid(int nid)
                 unsigned long physbase = lmb.reserved.region[i].base;
                 unsigned long size = lmb.reserved.region[i].size;
                 unsigned long start_pfn = physbase >> PAGE_SHIFT;
-                unsigned long end_pfn = ((physbase + size) >> PAGE_SHIFT);
+                unsigned long end_pfn = PFN_UP(physbase + size);
                 struct node_active_region node_ar;
                 unsigned long node_end_pfn = node->node_start_pfn +
                                              node->node_spanned_pages;
@@ -908,7 +909,7 @@ static void mark_reserved_regions_for_nid(int nid)
                          */
                         if (end_pfn > node_ar.end_pfn)
                                 reserve_size = (node_ar.end_pfn << PAGE_SHIFT)
-                                        - (start_pfn << PAGE_SHIFT);
+                                        - physbase;
                         /*
                          * Only worry about *this* node, others may not
                          * yet have valid NODE_DATA().
diff --git a/arch/powerpc/platforms/ps3/mm.c b/arch/powerpc/platforms/ps3/mm.c
index 67de6bf3db3d..d281cc0bca71 100644
--- a/arch/powerpc/platforms/ps3/mm.c
+++ b/arch/powerpc/platforms/ps3/mm.c
@@ -328,7 +328,7 @@ static int __init ps3_mm_add_memory(void)
         return result;
 }
 
-core_initcall(ps3_mm_add_memory);
+device_initcall(ps3_mm_add_memory);
 
 /*============================================================================*/
 /* dma routines                                                               */
diff --git a/arch/s390/include/asm/cputime.h b/arch/s390/include/asm/cputime.h
index 521726430afa..95b0f7db3c69 100644
--- a/arch/s390/include/asm/cputime.h
+++ b/arch/s390/include/asm/cputime.h
@@ -145,7 +145,7 @@ cputime_to_timeval(const cputime_t cputime, struct timeval *value)
         value->tv_usec = rp.subreg.even / 4096;
         value->tv_sec = rp.subreg.odd;
 #else
-        value->tv_usec = cputime % 4096000000ULL;
+        value->tv_usec = (cputime % 4096000000ULL) / 4096;
         value->tv_sec = cputime / 4096000000ULL;
 #endif
 }
diff --git a/arch/s390/include/asm/setup.h b/arch/s390/include/asm/setup.h
index 2bd9faeb3919..e8bd6ac22c99 100644
--- a/arch/s390/include/asm/setup.h
+++ b/arch/s390/include/asm/setup.h
@@ -43,6 +43,8 @@ struct mem_chunk {
 
 extern struct mem_chunk memory_chunk[];
 extern unsigned long real_memory_size;
+extern int memory_end_set;
+extern unsigned long memory_end;
 
 void detect_memory_layout(struct mem_chunk chunk[]);
 
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index d825f4950e4e..c5cfb6185eac 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -82,7 +82,9 @@ char elf_platform[ELF_PLATFORM_SIZE];
 
 struct mem_chunk __initdata memory_chunk[MEMORY_CHUNKS];
 volatile int __cpu_logical_map[NR_CPUS]; /* logical cpu to cpu address */
-static unsigned long __initdata memory_end;
+
+int __initdata memory_end_set;
+unsigned long __initdata memory_end;
 
 /*
  * This is set up by the setup-routine at boot-time
@@ -281,6 +283,7 @@ void (*pm_power_off)(void) = machine_power_off;
 static int __init early_parse_mem(char *p)
 {
         memory_end = memparse(p, &p);
+        memory_end_set = 1;
         return 0;
 }
 early_param("mem", early_parse_mem);
@@ -508,8 +511,10 @@ static void __init setup_memory_end(void)
         int i;
 
 #if defined(CONFIG_ZFCPDUMP) || defined(CONFIG_ZFCPDUMP_MODULE)
-        if (ipl_info.type == IPL_TYPE_FCP_DUMP)
+        if (ipl_info.type == IPL_TYPE_FCP_DUMP) {
                 memory_end = ZFCPDUMP_HSA_SIZE;
+                memory_end_set = 1;
+        }
 #endif
         memory_size = 0;
         memory_end &= PAGE_MASK;
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index be8497186b96..0d33893e1e89 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -212,6 +212,10 @@ static void kvm_free_vcpus(struct kvm *kvm)
         }
 }
 
+void kvm_arch_sync_events(struct kvm *kvm)
+{
+}
+
 void kvm_arch_destroy_vm(struct kvm *kvm)
 {
         kvm_free_vcpus(kvm);
diff --git a/arch/x86/Kconfig.debug b/arch/x86/Kconfig.debug
index 10d6cc3fd052..e1983fa025d2 100644
--- a/arch/x86/Kconfig.debug
+++ b/arch/x86/Kconfig.debug
@@ -174,28 +174,8 @@ config IOMMU_LEAK
           Add a simple leak tracer to the IOMMU code. This is useful when you
           are debugging a buggy device driver that leaks IOMMU mappings.
 
-config MMIOTRACE
-        bool "Memory mapped IO tracing"
-        depends on DEBUG_KERNEL && PCI
-        select TRACING
-        help
-          Mmiotrace traces Memory Mapped I/O access and is meant for
-          debugging and reverse engineering. It is called from the ioremap
-          implementation and works via page faults. Tracing is disabled by
-          default and can be enabled at run-time.
-
-          See Documentation/tracers/mmiotrace.txt.
-          If you are not helping to develop drivers, say N.
-
-config MMIOTRACE_TEST
-        tristate "Test module for mmiotrace"
-        depends on MMIOTRACE && m
-        help
-          This is a dumb module for testing mmiotrace. It is very dangerous
-          as it will write garbage to IO memory starting at a given address.
-          However, it should be safe to use on e.g. unused portion of VRAM.
-
-          Say N, unless you absolutely know what you are doing.
+config HAVE_MMIOTRACE_SUPPORT
+        def_bool y
 
 #
 # IO delay types:
diff --git a/arch/x86/include/asm/kvm.h b/arch/x86/include/asm/kvm.h
index d2e3bf3608af..886c9402ec45 100644
--- a/arch/x86/include/asm/kvm.h
+++ b/arch/x86/include/asm/kvm.h
@@ -9,6 +9,13 @@
 #include <linux/types.h>
 #include <linux/ioctl.h>
 
+/* Select x86 specific features in <linux/kvm.h> */
+#define __KVM_HAVE_PIT
+#define __KVM_HAVE_IOAPIC
+#define __KVM_HAVE_DEVICE_ASSIGNMENT
+#define __KVM_HAVE_MSI
+#define __KVM_HAVE_USER_NMI
+
 /* Architectural interrupt line count. */
 #define KVM_NR_INTERRUPTS 256
 
diff --git a/arch/x86/include/asm/mmzone_32.h b/arch/x86/include/asm/mmzone_32.h
index 07f1af494ca5..105fb90a0635 100644
--- a/arch/x86/include/asm/mmzone_32.h
+++ b/arch/x86/include/asm/mmzone_32.h
@@ -32,8 +32,6 @@ static inline void get_memcfg_numa(void)
         get_memcfg_numa_flat();
 }
 
-extern int early_pfn_to_nid(unsigned long pfn);
-
 extern void resume_map_numa_kva(pgd_t *pgd);
 
 #else /* !CONFIG_NUMA */
diff --git a/arch/x86/include/asm/mmzone_64.h b/arch/x86/include/asm/mmzone_64.h
index a5b3817d4b9e..a29f48c2a322 100644
--- a/arch/x86/include/asm/mmzone_64.h
+++ b/arch/x86/include/asm/mmzone_64.h
@@ -40,8 +40,6 @@ static inline __attribute__((pure)) int phys_to_nid(unsigned long addr)
 #define node_end_pfn(nid)       (NODE_DATA(nid)->node_start_pfn +       \
                                  NODE_DATA(nid)->node_spanned_pages)
 
-extern int early_pfn_to_nid(unsigned long pfn);
-
 #ifdef CONFIG_NUMA_EMU
 #define FAKE_NODE_MIN_SIZE      (64 * 1024 * 1024)
 #define FAKE_NODE_MIN_HASH_MASK (~(FAKE_NODE_MIN_SIZE - 1UL))
diff --git a/arch/x86/include/asm/page.h b/arch/x86/include/asm/page.h
index e9873a2e8695..776579119a00 100644
--- a/arch/x86/include/asm/page.h
+++ b/arch/x86/include/asm/page.h
@@ -57,7 +57,6 @@ typedef struct { pgdval_t pgd; } pgd_t;
 typedef struct { pgprotval_t pgprot; } pgprot_t;
 
 extern int page_is_ram(unsigned long pagenr);
-extern int pagerange_is_ram(unsigned long start, unsigned long end);
 extern int devmem_is_allowed(unsigned long pagenr);
 extern void map_devmem(unsigned long pfn, unsigned long size,
                        pgprot_t vma_prot);
diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h
index c09a14127584..e299287e8e33 100644
--- a/arch/x86/include/asm/paravirt.h
+++ b/arch/x86/include/asm/paravirt.h
@@ -1352,14 +1352,7 @@ static inline void arch_leave_lazy_cpu_mode(void)
         PVOP_VCALL0(pv_cpu_ops.lazy_mode.leave);
 }
 
-static inline void arch_flush_lazy_cpu_mode(void)
-{
-        if (unlikely(paravirt_get_lazy_mode() == PARAVIRT_LAZY_CPU)) {
-                arch_leave_lazy_cpu_mode();
-                arch_enter_lazy_cpu_mode();
-        }
-}
-
+void arch_flush_lazy_cpu_mode(void);
 
 #define  __HAVE_ARCH_ENTER_LAZY_MMU_MODE
 static inline void arch_enter_lazy_mmu_mode(void)
@@ -1372,13 +1365,7 @@ static inline void arch_leave_lazy_mmu_mode(void)
         PVOP_VCALL0(pv_mmu_ops.lazy_mode.leave);
 }
 
-static inline void arch_flush_lazy_mmu_mode(void)
-{
-        if (unlikely(paravirt_get_lazy_mode() == PARAVIRT_LAZY_MMU)) {
-                arch_leave_lazy_mmu_mode();
-                arch_enter_lazy_mmu_mode();
-        }
-}
+void arch_flush_lazy_mmu_mode(void);
 
 static inline void __set_fixmap(unsigned /* enum fixed_addresses */ idx,
                                 unsigned long phys, pgprot_t flags)
diff --git a/arch/x86/kernel/apic.c b/arch/x86/kernel/apic.c
index 115449f869ee..570f36e44e59 100644
--- a/arch/x86/kernel/apic.c
+++ b/arch/x86/kernel/apic.c
@@ -862,7 +862,7 @@ void clear_local_APIC(void)
         }
 
         /* lets not touch this if we didn't frob it */
-#if defined(CONFIG_X86_MCE_P4THERMAL) || defined(X86_MCE_INTEL)
+#if defined(CONFIG_X86_MCE_P4THERMAL) || defined(CONFIG_X86_MCE_INTEL)
         if (maxlvt >= 5) {
                 v = apic_read(APIC_LVTTHMR);
                 apic_write(APIC_LVTTHMR, v | APIC_LVT_MASKED);
diff --git a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
index fb039cd345d8..6428aa17b40e 100644
--- a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
+++ b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
@@ -1157,8 +1157,7 @@ static int __cpuinit powernowk8_cpu_init(struct cpufreq_policy *pol)
         data->cpu = pol->cpu;
         data->currpstate = HW_PSTATE_INVALID;
 
-        rc = powernow_k8_cpu_init_acpi(data);
-        if (rc) {
+        if (powernow_k8_cpu_init_acpi(data)) {
                 /*
                  * Use the PSB BIOS structure. This is only availabe on
                  * an UP version, and is deprecated by AMD.
@@ -1176,17 +1175,20 @@ static int __cpuinit powernowk8_cpu_init(struct cpufreq_policy *pol)
                                "ACPI maintainers and complain to your BIOS "
                                "vendor.\n");
 #endif
-                        goto err_out;
+                        kfree(data);
+                        return -ENODEV;
                 }
                 if (pol->cpu != 0) {
                         printk(KERN_ERR FW_BUG PFX "No ACPI _PSS objects for "
                                "CPU other than CPU0. Complain to your BIOS "
                                "vendor.\n");
-                        goto err_out;
+                        kfree(data);
+                        return -ENODEV;
                 }
                 rc = find_psb_table(data);
                 if (rc) {
-                        goto err_out;
+                        kfree(data);
+                        return -ENODEV;
                 }
                 /* Take a crude guess here.
                  * That guess was in microseconds, so multiply with 1000 */
diff --git a/arch/x86/kernel/cpu/mcheck/mce_64.c b/arch/x86/kernel/cpu/mcheck/mce_64.c
index 1c838032fd37..25cf624eccb7 100644
--- a/arch/x86/kernel/cpu/mcheck/mce_64.c
+++ b/arch/x86/kernel/cpu/mcheck/mce_64.c
@@ -295,11 +295,11 @@ void do_machine_check(struct pt_regs * regs, long error_code)
                  * If we know that the error was in user space, send a
                  * SIGBUS.  Otherwise, panic if tolerance is low.
                  *
-                 * do_exit() takes an awful lot of locks and has a slight
+                 * force_sig() takes an awful lot of locks and has a slight
                  * risk of deadlocking.
                  */
                 if (user_space) {
-                        do_exit(SIGBUS);
+                        force_sig(SIGBUS, current);
                 } else if (panic_on_oops || tolerant < 2) {
                         mce_panic("Uncorrected machine check",
                                 &panicm, mcestart);
@@ -734,6 +734,7 @@ __setup("mce=", mcheck_enable);
 static int mce_resume(struct sys_device *dev)
 {
         mce_init(NULL);
+        mce_cpu_features(&current_cpu_data);
         return 0;
 }
 
diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c
index 388254f69a2a..a00545fe5cdd 100644
--- a/arch/x86/kernel/hpet.c
+++ b/arch/x86/kernel/hpet.c
@@ -269,6 +269,8 @@ static void hpet_set_mode(enum clock_event_mode mode,
                 now = hpet_readl(HPET_COUNTER);
                 cmp = now + (unsigned long) delta;
                 cfg = hpet_readl(HPET_Tn_CFG(timer));
+                /* Make sure we use edge triggered interrupts */
+                cfg &= ~HPET_TN_LEVEL;
                 cfg |= HPET_TN_ENABLE | HPET_TN_PERIODIC |
                        HPET_TN_SETVAL | HPET_TN_32BIT;
                 hpet_writel(cfg, HPET_Tn_CFG(timer));
diff --git a/arch/x86/kernel/olpc.c b/arch/x86/kernel/olpc.c
index 7a13fac63a1f..4006c522adc7 100644
--- a/arch/x86/kernel/olpc.c
+++ b/arch/x86/kernel/olpc.c
@@ -203,7 +203,7 @@ static void __init platform_detect(void)
 static void __init platform_detect(void)
 {
         /* stopgap until OFW support is added to the kernel */
-        olpc_platform_info.boardrev = 0xc2;
+        olpc_platform_info.boardrev = olpc_board(0xc2);
 }
 #endif
 
diff --git a/arch/x86/kernel/paravirt.c b/arch/x86/kernel/paravirt.c
index e4c8fb608873..c6520a4e85d4 100644
--- a/arch/x86/kernel/paravirt.c
+++ b/arch/x86/kernel/paravirt.c
@@ -268,6 +268,32 @@ enum paravirt_lazy_mode paravirt_get_lazy_mode(void)
         return __get_cpu_var(paravirt_lazy_mode);
 }
 
+void arch_flush_lazy_mmu_mode(void)
+{
+        preempt_disable();
+
+        if (paravirt_get_lazy_mode() == PARAVIRT_LAZY_MMU) {
+                WARN_ON(preempt_count() == 1);
+                arch_leave_lazy_mmu_mode();
+                arch_enter_lazy_mmu_mode();
+        }
+
+        preempt_enable();
+}
+
+void arch_flush_lazy_cpu_mode(void)
+{
+        preempt_disable();
+
+        if (paravirt_get_lazy_mode() == PARAVIRT_LAZY_CPU) {
+                WARN_ON(preempt_count() == 1);
+                arch_leave_lazy_cpu_mode();
+                arch_enter_lazy_cpu_mode();
+        }
+
+        preempt_enable();
+}
+
 struct pv_info pv_info = {
         .name = "bare hardware",
         .paravirt_enabled = 0,
diff --git a/arch/x86/kernel/process_32.c b/arch/x86/kernel/process_32.c
index a546f55c77b4..bd4da2af08ae 100644
--- a/arch/x86/kernel/process_32.c
+++ b/arch/x86/kernel/process_32.c
@@ -104,9 +104,6 @@ void cpu_idle(void)
                         check_pgt_cache();
                         rmb();
 
-                        if (rcu_pending(cpu))
-                                rcu_check_callbacks(cpu, 0);
-
                         if (cpu_is_offline(cpu))
                                 play_dead();
 
diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c
index 0a5df5f82fb9..5a4c23d89892 100644
--- a/arch/x86/kernel/ptrace.c
+++ b/arch/x86/kernel/ptrace.c
@@ -810,12 +810,16 @@ static void ptrace_bts_untrace(struct task_struct *child)
 
 static void ptrace_bts_detach(struct task_struct *child)
 {
-        if (unlikely(child->bts)) {
-                ds_release_bts(child->bts);
-                child->bts = NULL;
-
-                ptrace_bts_free_buffer(child);
-        }
+        /*
+         * Ptrace_detach() races with ptrace_untrace() in case
+         * the child dies and is reaped by another thread.
+         *
+         * We only do the memory accounting at this point and
+         * leave the buffer deallocation and the bts tracer
+         * release to ptrace_bts_untrace() which will be called
+         * later on with tasklist_lock held.
+         */
+        release_locked_buffer(child->bts_buffer, child->bts_size);
 }
 #else
 static inline void ptrace_bts_fork(struct task_struct *tsk) {}
diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c
index 7932338d7cb3..a9e7548e1790 100644
--- a/arch/x86/kernel/traps.c
+++ b/arch/x86/kernel/traps.c
@@ -99,6 +99,12 @@ static inline void preempt_conditional_sti(struct pt_regs *regs)
                 local_irq_enable();
 }
 
+static inline void conditional_cli(struct pt_regs *regs)
+{
+        if (regs->flags & X86_EFLAGS_IF)
+                local_irq_disable();
+}
+
 static inline void preempt_conditional_cli(struct pt_regs *regs)
 {
         if (regs->flags & X86_EFLAGS_IF)
@@ -626,8 +632,10 @@ clear_dr7:
 
 #ifdef CONFIG_X86_32
 debug_vm86:
+        /* reenable preemption: handle_vm86_trap() might sleep */
+        dec_preempt_count();
         handle_vm86_trap((struct kernel_vm86_regs *) regs, error_code, 1);
-        preempt_conditional_cli(regs);
+        conditional_cli(regs);
         return;
 #endif
 
diff --git a/arch/x86/kvm/i8254.c b/arch/x86/kvm/i8254.c
index e665d1c623ca..72bd275a9b5c 100644
--- a/arch/x86/kvm/i8254.c
+++ b/arch/x86/kvm/i8254.c
@@ -207,7 +207,7 @@ static int __pit_timer_fn(struct kvm_kpit_state *ps)
         hrtimer_add_expires_ns(&pt->timer, pt->period);
         pt->scheduled = hrtimer_get_expires_ns(&pt->timer);
         if (pt->period)
-                ps->channels[0].count_load_time = hrtimer_get_expires(&pt->timer);
+                ps->channels[0].count_load_time = ktime_get();
 
         return (pt->period == 0 ? 0 : 1);
 }
diff --git a/arch/x86/kvm/irq.c b/arch/x86/kvm/irq.c
index c019b8edcdb7..cf17ed52f6fb 100644
--- a/arch/x86/kvm/irq.c
+++ b/arch/x86/kvm/irq.c
@@ -87,13 +87,6 @@ void kvm_inject_pending_timer_irqs(struct kvm_vcpu *vcpu)
 }
 EXPORT_SYMBOL_GPL(kvm_inject_pending_timer_irqs);
 
-void kvm_timer_intr_post(struct kvm_vcpu *vcpu, int vec)
-{
-        kvm_apic_timer_intr_post(vcpu, vec);
-        /* TODO: PIT, RTC etc. */
-}
-EXPORT_SYMBOL_GPL(kvm_timer_intr_post);
-
 void __kvm_migrate_timers(struct kvm_vcpu *vcpu)
 {
         __kvm_migrate_apic_timer(vcpu);
diff --git a/arch/x86/kvm/irq.h b/arch/x86/kvm/irq.h
index 2bf32a03ceec..82579ee538d0 100644
--- a/arch/x86/kvm/irq.h
+++ b/arch/x86/kvm/irq.h
@@ -89,7 +89,6 @@ static inline int irqchip_in_kernel(struct kvm *kvm)
 
 void kvm_pic_reset(struct kvm_kpic_state *s);
 
-void kvm_timer_intr_post(struct kvm_vcpu *vcpu, int vec);
 void kvm_inject_pending_timer_irqs(struct kvm_vcpu *vcpu);
 void kvm_inject_apic_timer_irqs(struct kvm_vcpu *vcpu);
 void kvm_apic_nmi_wd_deliver(struct kvm_vcpu *vcpu);
diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
index afac68c0815c..f0b67f2cdd69 100644
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -35,6 +35,12 @@
 #include "kvm_cache_regs.h"
 #include "irq.h"
 
+#ifndef CONFIG_X86_64
+#define mod_64(x, y) ((x) - (y) * div64_u64(x, y))
+#else
+#define mod_64(x, y) ((x) % (y))
+#endif
+
 #define PRId64 "d"
 #define PRIx64 "llx"
 #define PRIu64 "u"
@@ -511,52 +517,22 @@ static void apic_send_ipi(struct kvm_lapic *apic)
 
 static u32 apic_get_tmcct(struct kvm_lapic *apic)
 {
-        u64 counter_passed;
-        ktime_t passed, now;
+        ktime_t remaining;
+        s64 ns;
         u32 tmcct;
 
         ASSERT(apic != NULL);
 
-        now = apic->timer.dev.base->get_time();
-        tmcct = apic_get_reg(apic, APIC_TMICT);
-
         /* if initial count is 0, current count should also be 0 */
-        if (tmcct == 0)
+        if (apic_get_reg(apic, APIC_TMICT) == 0)
                 return 0;
 
-        if (unlikely(ktime_to_ns(now) <=
-                ktime_to_ns(apic->timer.last_update))) {
-                /* Wrap around */
-                passed = ktime_add(( {
-                                    (ktime_t) {
-                                    .tv64 = KTIME_MAX -
-                                    (apic->timer.last_update).tv64}; }
-                                   ), now);
-                apic_debug("time elapsed\n");
-        } else
-                passed = ktime_sub(now, apic->timer.last_update);
-
-        counter_passed = div64_u64(ktime_to_ns(passed),
-                                   (APIC_BUS_CYCLE_NS * apic->timer.divide_count));
-
-        if (counter_passed > tmcct) {
-                if (unlikely(!apic_lvtt_period(apic))) {
-                        /* one-shot timers stick at 0 until reset */
-                        tmcct = 0;
-                } else {
-                        /*
-                         * periodic timers reset to APIC_TMICT when they
-                         * hit 0. The while loop simulates this happening N
-                         * times. (counter_passed %= tmcct) would also work,
-                         * but might be slower or not work on 32-bit??
-                         */
-                        while (counter_passed > tmcct)
-                                counter_passed -= tmcct;
-                        tmcct -= counter_passed;
-                }
-        } else {
-                tmcct -= counter_passed;
-        }
+        remaining = hrtimer_expires_remaining(&apic->timer.dev);
+        if (ktime_to_ns(remaining) < 0)
+                remaining = ktime_set(0, 0);
+
+        ns = mod_64(ktime_to_ns(remaining), apic->timer.period);
+        tmcct = div64_u64(ns, (APIC_BUS_CYCLE_NS * apic->timer.divide_count));
 
         return tmcct;
 }
@@ -653,8 +629,6 @@ static void start_apic_timer(struct kvm_lapic *apic)
 {
         ktime_t now = apic->timer.dev.base->get_time();
 
-        apic->timer.last_update = now;
-
         apic->timer.period = apic_get_reg(apic, APIC_TMICT) *
                     APIC_BUS_CYCLE_NS * apic->timer.divide_count;
         atomic_set(&apic->timer.pending, 0);
@@ -1110,16 +1084,6 @@ void kvm_inject_apic_timer_irqs(struct kvm_vcpu *vcpu)
         }
 }
 
-void kvm_apic_timer_intr_post(struct kvm_vcpu *vcpu, int vec)
-{
-        struct kvm_lapic *apic = vcpu->arch.apic;
-
-        if (apic && apic_lvt_vector(apic, APIC_LVTT) == vec)
-                apic->timer.last_update = ktime_add_ns(
-                                apic->timer.last_update,
-                                apic->timer.period);
-}
-
 int kvm_get_apic_interrupt(struct kvm_vcpu *vcpu)
 {
         int vector = kvm_apic_has_interrupt(vcpu);
diff --git a/arch/x86/kvm/lapic.h b/arch/x86/kvm/lapic.h
index 81858881287e..45ab6ee71209 100644
--- a/arch/x86/kvm/lapic.h
+++ b/arch/x86/kvm/lapic.h
@@ -12,7 +12,6 @@ struct kvm_lapic {
                 atomic_t pending;
                 s64 period;     /* unit: ns */
                 u32 divide_count;
-                ktime_t last_update;
                 struct hrtimer dev;
         } timer;
         struct kvm_vcpu *vcpu;
@@ -42,7 +41,6 @@ void kvm_set_apic_base(struct kvm_vcpu *vcpu, u64 data);
 void kvm_apic_post_state_restore(struct kvm_vcpu *vcpu);
 int kvm_lapic_enabled(struct kvm_vcpu *vcpu);
 int kvm_lapic_find_highest_irr(struct kvm_vcpu *vcpu);
-void kvm_apic_timer_intr_post(struct kvm_vcpu *vcpu, int vec);
 
 void kvm_lapic_set_vapic_addr(struct kvm_vcpu *vcpu, gpa_t vapic_addr);
 void kvm_lapic_sync_from_vapic(struct kvm_vcpu *vcpu);
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 83f11c7474a1..2d4477c71473 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -1698,8 +1698,13 @@ static int set_spte(struct kvm_vcpu *vcpu, u64 *shadow_pte,
         if (largepage)
                 spte |= PT_PAGE_SIZE_MASK;
         if (mt_mask) {
-                mt_mask = get_memory_type(vcpu, gfn) <<
-                          kvm_x86_ops->get_mt_mask_shift();
+                if (!kvm_is_mmio_pfn(pfn)) {
+                        mt_mask = get_memory_type(vcpu, gfn) <<
+                                kvm_x86_ops->get_mt_mask_shift();
+                        mt_mask |= VMX_EPT_IGMT_BIT;
+                } else
+                        mt_mask = MTRR_TYPE_UNCACHABLE <<
+                                kvm_x86_ops->get_mt_mask_shift();
                 spte |= mt_mask;
         }
 
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 1452851ae258..a9e769e4e251 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -1600,7 +1600,6 @@ static void svm_intr_assist(struct kvm_vcpu *vcpu)
         /* Okay, we can deliver the interrupt: grab it and update PIC state. */
         intr_vector = kvm_cpu_get_interrupt(vcpu);
         svm_inject_irq(svm, intr_vector);
-        kvm_timer_intr_post(vcpu, intr_vector);
 out:
         update_cr8_intercept(vcpu);
 }
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 6259d7467648..7611af576829 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -903,6 +903,7 @@ static int vmx_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata)
                 data = vmcs_readl(GUEST_SYSENTER_ESP);
                 break;
         default:
+                vmx_load_host_state(to_vmx(vcpu));
                 msr = find_msr_entry(to_vmx(vcpu), msr_index);
                 if (msr) {
                         data = msr->data;
@@ -3285,7 +3286,6 @@ static void vmx_intr_assist(struct kvm_vcpu *vcpu)
         }
         if (vcpu->arch.interrupt.pending) {
                 vmx_inject_irq(vcpu, vcpu->arch.interrupt.nr);
-                kvm_timer_intr_post(vcpu, vcpu->arch.interrupt.nr);
                 if (kvm_cpu_has_interrupt(vcpu))
                         enable_irq_window(vcpu);
         }
@@ -3687,8 +3687,7 @@ static int __init vmx_init(void)
         if (vm_need_ept()) {
                 bypass_guest_pf = 0;
                 kvm_mmu_set_base_ptes(VMX_EPT_READABLE_MASK |
-                        VMX_EPT_WRITABLE_MASK |
-                        VMX_EPT_IGMT_BIT);
+                        VMX_EPT_WRITABLE_MASK);
                 kvm_mmu_set_mask_ptes(0ull, 0ull, 0ull, 0ull,
                                 VMX_EPT_EXECUTABLE_MASK,
                                 VMX_EPT_DEFAULT_MT << VMX_EPT_MT_EPTE_SHIFT);
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index cc17546a2406..758b7a155ae9 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -967,7 +967,6 @@ int kvm_dev_ioctl_check_extension(long ext)
         case KVM_CAP_MMU_SHADOW_CACHE_CONTROL:
         case KVM_CAP_SET_TSS_ADDR:
         case KVM_CAP_EXT_CPUID:
-        case KVM_CAP_CLOCKSOURCE:
         case KVM_CAP_PIT:
         case KVM_CAP_NOP_IO_DELAY:
         case KVM_CAP_MP_STATE:
@@ -992,6 +991,9 @@ int kvm_dev_ioctl_check_extension(long ext)
         case KVM_CAP_IOMMU:
                 r = iommu_found();
                 break;
+        case KVM_CAP_CLOCKSOURCE:
+                r = boot_cpu_has(X86_FEATURE_CONSTANT_TSC);
+                break;
         default:
                 r = 0;
                 break;
@@ -4127,9 +4129,13 @@ static void kvm_free_vcpus(struct kvm *kvm)
 
 }
 
-void kvm_arch_destroy_vm(struct kvm *kvm)
+void kvm_arch_sync_events(struct kvm *kvm)
 {
         kvm_free_all_assigned_devices(kvm);
+}
+
+void kvm_arch_destroy_vm(struct kvm *kvm)
+{
         kvm_iommu_unmap_guest(kvm);
         kvm_free_pit(kvm);
         kfree(kvm->arch.vpic);
diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
index af750ab973b6..f45d5e29a72e 100644
--- a/arch/x86/mm/ioremap.c
+++ b/arch/x86/mm/ioremap.c
@@ -134,25 +134,6 @@ int page_is_ram(unsigned long pagenr)
         return 0;
 }
 
-int pagerange_is_ram(unsigned long start, unsigned long end)
-{
-        int ram_page = 0, not_rampage = 0;
-        unsigned long page_nr;
-
-        for (page_nr = (start >> PAGE_SHIFT); page_nr < (end >> PAGE_SHIFT);
-             ++page_nr) {
-                if (page_is_ram(page_nr))
-                        ram_page = 1;
-                else
-                        not_rampage = 1;
-
-                if (ram_page == not_rampage)
-                        return -1;
-        }
-
-        return ram_page;
-}
-
 /*
  * Fix up the linear direct mapping of the kernel to avoid cache attribute
  * conflicts.
diff --git a/arch/x86/mm/numa_64.c b/arch/x86/mm/numa_64.c
index 71a14f89f89e..f3516da035d1 100644
--- a/arch/x86/mm/numa_64.c
+++ b/arch/x86/mm/numa_64.c
@@ -145,7 +145,7 @@ int __init compute_hash_shift(struct bootnode *nodes, int numnodes,
         return shift;
 }
 
-int early_pfn_to_nid(unsigned long pfn)
+int __meminit  __early_pfn_to_nid(unsigned long pfn)
 {
         return phys_to_nid(pfn << PAGE_SHIFT);
 }
diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c
index 84ba74820ad6..8ca0d8566fc8 100644
--- a/arch/x86/mm/pageattr.c
+++ b/arch/x86/mm/pageattr.c
@@ -575,7 +575,6 @@ static int __change_page_attr(struct cpa_data *cpa, int primary)
                 address = cpa->vaddr[cpa->curpage];
         else
                 address = *cpa->vaddr;
-
 repeat:
         kpte = lookup_address(address, &level);
         if (!kpte)
@@ -812,6 +811,13 @@ static int change_page_attr_set_clr(unsigned long *addr, int numpages,
 
         vm_unmap_aliases();
 
+        /*
+         * If we're called with lazy mmu updates enabled, the
+         * in-memory pte state may be stale.  Flush pending updates to
+         * bring them up to date.
+         */
+        arch_flush_lazy_mmu_mode();
+
         cpa.vaddr = addr;
         cpa.numpages = numpages;
         cpa.mask_set = mask_set;
@@ -854,6 +860,13 @@ static int change_page_attr_set_clr(unsigned long *addr, int numpages,
         } else
                 cpa_flush_all(cache);
 
+        /*
+         * If we've been called with lazy mmu updates enabled, then
+         * make sure that everything gets flushed out before we
+         * return.
+         */
+        arch_flush_lazy_mmu_mode();
+
 out:
         return ret;
 }
diff --git a/arch/x86/mm/pat.c b/arch/x86/mm/pat.c
index 7b61036427df..aebbf67a79d0 100644
--- a/arch/x86/mm/pat.c
+++ b/arch/x86/mm/pat.c
@@ -211,6 +211,33 @@ chk_conflict(struct memtype *new, struct memtype *entry, unsigned long *type)
 static struct memtype *cached_entry;
 static u64 cached_start;
 
+static int pat_pagerange_is_ram(unsigned long start, unsigned long end)
+{
+        int ram_page = 0, not_rampage = 0;
+        unsigned long page_nr;
+
+        for (page_nr = (start >> PAGE_SHIFT); page_nr < (end >> PAGE_SHIFT);
+             ++page_nr) {
+                /*
+                 * For legacy reasons, physical address range in the legacy ISA
+                 * region is tracked as non-RAM. This will allow users of
+                 * /dev/mem to map portions of legacy ISA region, even when
+                 * some of those portions are listed(or not even listed) with
+                 * different e820 types(RAM/reserved/..)
+                 */
+                if (page_nr >= (ISA_END_ADDRESS >> PAGE_SHIFT) &&
+                    page_is_ram(page_nr))
+                        ram_page = 1;
+                else
+                        not_rampage = 1;
+
+                if (ram_page == not_rampage)
+                        return -1;
+        }
+
+        return ram_page;
+}
+
 /*
  * For RAM pages, mark the pages as non WB memory type using
  * PageNonWB (PG_arch_1). We allow only one set_memory_uc() or
@@ -336,20 +363,12 @@ int reserve_memtype(u64 start, u64 end, unsigned long req_type,
         if (new_type)
                 *new_type = actual_type;
 
-        /*
-         * For legacy reasons, some parts of the physical address range in the
-         * legacy 1MB region is treated as non-RAM (even when listed as RAM in
-         * the e820 tables).  So we will track the memory attributes of this
-         * legacy 1MB region using the linear memtype_list always.
-         */
-        if (end >= ISA_END_ADDRESS) {
-                is_range_ram = pagerange_is_ram(start, end);
-                if (is_range_ram == 1)
-                        return reserve_ram_pages_type(start, end, req_type,
-                                                      new_type);
-                else if (is_range_ram < 0)
-                        return -EINVAL;
-        }
+        is_range_ram = pat_pagerange_is_ram(start, end);
+        if (is_range_ram == 1)
+                return reserve_ram_pages_type(start, end, req_type,
+                                              new_type);
+        else if (is_range_ram < 0)
+                return -EINVAL;
 
         new  = kmalloc(sizeof(struct memtype), GFP_KERNEL);
         if (!new)
@@ -446,19 +465,11 @@ int free_memtype(u64 start, u64 end)
         if (is_ISA_range(start, end - 1))
                 return 0;
 
-        /*
-         * For legacy reasons, some parts of the physical address range in the
-         * legacy 1MB region is treated as non-RAM (even when listed as RAM in
-         * the e820 tables).  So we will track the memory attributes of this
-         * legacy 1MB region using the linear memtype_list always.
-         */
-        if (end >= ISA_END_ADDRESS) {
-                is_range_ram = pagerange_is_ram(start, end);
-                if (is_range_ram == 1)
-                        return free_ram_pages_type(start, end);
-                else if (is_range_ram < 0)
-                        return -EINVAL;
-        }
+        is_range_ram = pat_pagerange_is_ram(start, end);
+        if (is_range_ram == 1)
+                return free_ram_pages_type(start, end);
+        else if (is_range_ram < 0)
+                return -EINVAL;
 
         spin_lock(&memtype_lock);
         list_for_each_entry(entry, &memtype_list, nd) {
@@ -626,17 +637,13 @@ static int reserve_pfn_range(u64 paddr, unsigned long size, pgprot_t *vma_prot,
         unsigned long flags;
         unsigned long want_flags = (pgprot_val(*vma_prot) & _PAGE_CACHE_MASK);
 
-        is_ram = pagerange_is_ram(paddr, paddr + size);
+        is_ram = pat_pagerange_is_ram(paddr, paddr + size);
 
-        if (is_ram != 0) {
-                /*
-                 * For mapping RAM pages, drivers need to call
-                 * set_memory_[uc|wc|wb] directly, for reserve and free, before
-                 * setting up the PTE.
-                 */
-                WARN_ON_ONCE(1);
-                return 0;
-        }
+        /*
+         * reserve_pfn_range() doesn't support RAM pages.
+         */
+        if (is_ram != 0)
+                return -EINVAL;
 
         ret = reserve_memtype(paddr, paddr + size, want_flags, &flags);
         if (ret)
@@ -693,7 +700,7 @@ static void free_pfn_range(u64 paddr, unsigned long size)
 {
         int is_ram;
 
-        is_ram = pagerange_is_ram(paddr, paddr + size);
+        is_ram = pat_pagerange_is_ram(paddr, paddr + size);
         if (is_ram == 0)
                 free_memtype(paddr, paddr + size);
 }