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-rw-r--r--arch/arm/kernel/jump_label.c29
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/arm/kernel/jump_label.c b/arch/arm/kernel/jump_label.c
new file mode 100644
index 000000000..eb9c24b6e
--- /dev/null
+++ b/arch/arm/kernel/jump_label.c
@@ -0,0 +1,29 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/kernel.h>
+#include <linux/jump_label.h>
+#include <asm/patch.h>
+#include <asm/insn.h>
+
+static void __arch_jump_label_transform(struct jump_entry *entry,
+ enum jump_label_type type,
+ bool is_static)
+{
+ void *addr = (void *)entry->code;
+ unsigned int insn;
+
+ if (type == JUMP_LABEL_JMP)
+ insn = arm_gen_branch(entry->code, entry->target);
+ else
+ insn = arm_gen_nop();
+
+ if (is_static)
+ __patch_text_early(addr, insn);
+ else
+ patch_text(addr, insn);
+}
+
+void arch_jump_label_transform(struct jump_entry *entry,
+ enum jump_label_type type)
+{
+ __arch_jump_label_transform(entry, type, false);
+}