1 files changed, 20 insertions, 0 deletions

diff --git a/arch/arm/kernel/uprobes.c b/arch/arm/kernel/uprobes.c
index f9bacee973bf..56adf9c1fde0 100644
--- a/arch/arm/kernel/uprobes.c
+++ b/arch/arm/kernel/uprobes.c
@@ -113,6 +113,26 @@ int arch_uprobe_analyze_insn(struct arch_uprobe *auprobe, struct mm_struct *mm,
         return 0;
 }
 
+void arch_uprobe_copy_ixol(struct page *page, unsigned long vaddr,
+                           void *src, unsigned long len)
+{
+        void *xol_page_kaddr = kmap_atomic(page);
+        void *dst = xol_page_kaddr + (vaddr & ~PAGE_MASK);
+
+        preempt_disable();
+
+        /* Initialize the slot */
+        memcpy(dst, src, len);
+
+        /* flush caches (dcache/icache) */
+        flush_uprobe_xol_access(page, vaddr, dst, len);
+
+        preempt_enable();
+
+        kunmap_atomic(xol_page_kaddr);
+}
+
+
 int arch_uprobe_pre_xol(struct arch_uprobe *auprobe, struct pt_regs *regs)
 {
         struct uprobe_task *utask = current->utask;