1 files changed, 17 insertions, 8 deletions

diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c
index d1edc5e6fd03..adcd76a96839 100644
--- a/kernel/events/uprobes.c
+++ b/kernel/events/uprobes.c
@@ -1291,14 +1291,8 @@ static unsigned long xol_get_insn_slot(struct uprobe *uprobe)
         if (unlikely(!xol_vaddr))
                 return 0;
 
-        /* Initialize the slot */
-        copy_to_page(area->page, xol_vaddr,
-                        &uprobe->arch.ixol, sizeof(uprobe->arch.ixol));
-        /*
-         * We probably need flush_icache_user_range() but it needs vma.
-         * This should work on supported architectures too.
-         */
-        flush_dcache_page(area->page);
+        arch_uprobe_copy_ixol(area->page, xol_vaddr,
+                              &uprobe->arch.ixol, sizeof(uprobe->arch.ixol));
 
         return xol_vaddr;
 }
@@ -1341,6 +1335,21 @@ static void xol_free_insn_slot(struct task_struct *tsk)
         }
 }
 
+void __weak arch_uprobe_copy_ixol(struct page *page, unsigned long vaddr,
+                                  void *src, unsigned long len)
+{
+        /* Initialize the slot */
+        copy_to_page(page, vaddr, src, len);
+
+        /*
+         * We probably need flush_icache_user_range() but it needs vma.
+         * This should work on most of architectures by default. If
+         * architecture needs to do something different it can define
+         * its own version of the function.
+         */
+        flush_dcache_page(page);
+}
+
 /**
  * uprobe_get_swbp_addr - compute address of swbp given post-swbp regs
  * @regs: Reflects the saved state of the task after it has hit a breakpoint