3 files changed, 11 insertions, 58 deletions

diff --git a/arch/powerpc/mm/book3s64/iommu_api.c b/arch/powerpc/mm/book3s64/iommu_api.c
index 90ee3a89722c..b056cae3388b 100644
--- a/arch/powerpc/mm/book3s64/iommu_api.c
+++ b/arch/powerpc/mm/book3s64/iommu_api.c
@@ -14,6 +14,7 @@
 #include <linux/hugetlb.h>
 #include <linux/swap.h>
 #include <linux/sizes.h>
+#include <linux/mm.h>
 #include <asm/mmu_context.h>
 #include <asm/pte-walk.h>
 #include <linux/mm_inline.h>
@@ -46,40 +47,6 @@ struct mm_iommu_table_group_mem_t {
         u64 dev_hpa;            /* Device memory base address */
 };
 
-static long mm_iommu_adjust_locked_vm(struct mm_struct *mm,
-                unsigned long npages, bool incr)
-{
-        long ret = 0, locked, lock_limit;
-
-        if (!npages)
-                return 0;
-
-        down_write(&mm->mmap_sem);
-
-        if (incr) {
-                locked = mm->locked_vm + npages;
-                lock_limit = rlimit(RLIMIT_MEMLOCK) >> PAGE_SHIFT;
-                if (locked > lock_limit && !capable(CAP_IPC_LOCK))
-                        ret = -ENOMEM;
-                else
-                        mm->locked_vm += npages;
-        } else {
-                if (WARN_ON_ONCE(npages > mm->locked_vm))
-                        npages = mm->locked_vm;
-                mm->locked_vm -= npages;
-        }
-
-        pr_debug("[%d] RLIMIT_MEMLOCK HASH64 %c%ld %ld/%ld\n",
-                        current ? current->pid : 0,
-                        incr ? '+' : '-',
-                        npages << PAGE_SHIFT,
-                        mm->locked_vm << PAGE_SHIFT,
-                        rlimit(RLIMIT_MEMLOCK));
-        up_write(&mm->mmap_sem);
-
-        return ret;
-}
-
 bool mm_iommu_preregistered(struct mm_struct *mm)
 {
         return !list_empty(&mm->context.iommu_group_mem_list);
@@ -96,7 +63,7 @@ static long mm_iommu_do_alloc(struct mm_struct *mm, unsigned long ua,
         unsigned long entry, chunk;
 
         if (dev_hpa == MM_IOMMU_TABLE_INVALID_HPA) {
-                ret = mm_iommu_adjust_locked_vm(mm, entries, true);
+                ret = account_locked_vm(mm, entries, true);
                 if (ret)
                         return ret;
 
@@ -211,7 +178,7 @@ free_exit:
         kfree(mem);
 
 unlock_exit:
-        mm_iommu_adjust_locked_vm(mm, locked_entries, false);
+        account_locked_vm(mm, locked_entries, false);
 
         return ret;
 }
@@ -311,7 +278,7 @@ long mm_iommu_put(struct mm_struct *mm, struct mm_iommu_table_group_mem_t *mem)
 unlock_exit:
         mutex_unlock(&mem_list_mutex);
 
-        mm_iommu_adjust_locked_vm(mm, unlock_entries, false);
+        account_locked_vm(mm, unlock_entries, false);
 
         return ret;
 }
diff --git a/arch/powerpc/mm/book3s64/radix_pgtable.c b/arch/powerpc/mm/book3s64/radix_pgtable.c
index 65c2ba1e1783..b4ca9e95e678 100644
--- a/arch/powerpc/mm/book3s64/radix_pgtable.c
+++ b/arch/powerpc/mm/book3s64/radix_pgtable.c
@@ -1237,3 +1237,8 @@ int radix__ioremap_range(unsigned long ea, phys_addr_t pa, unsigned long size,
                 return 0;
         }
 }
+
+int __init arch_ioremap_p4d_supported(void)
+{
+        return 0;
+}
diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c
index d989592b6fc8..8432c281de92 100644
--- a/arch/powerpc/mm/fault.c
+++ b/arch/powerpc/mm/fault.c
@@ -42,26 +42,6 @@
 #include <asm/debug.h>
 #include <asm/kup.h>
 
-static inline bool notify_page_fault(struct pt_regs *regs)
-{
-        bool ret = false;
-
-#ifdef CONFIG_KPROBES
-        /* kprobe_running() needs smp_processor_id() */
-        if (!user_mode(regs)) {
-                preempt_disable();
-                if (kprobe_running() && kprobe_fault_handler(regs, 11))
-                        ret = true;
-                preempt_enable();
-        }
-#endif /* CONFIG_KPROBES */
-
-        if (unlikely(debugger_fault_handler(regs)))
-                ret = true;
-
-        return ret;
-}
-
 /*
  * Check whether the instruction inst is a store using
  * an update addressing form which will update r1.
@@ -461,8 +441,9 @@ static int __do_page_fault(struct pt_regs *regs, unsigned long address,
         int is_write = page_fault_is_write(error_code);
         vm_fault_t fault, major = 0;
         bool must_retry = false;
+        bool kprobe_fault = kprobe_page_fault(regs, 11);
 
-        if (notify_page_fault(regs))
+        if (unlikely(debugger_fault_handler(regs) || kprobe_fault))
                 return 0;
 
         if (unlikely(page_fault_is_bad(error_code))) {