Update Linux to v5.10.109
Sourced from [1]
[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.10.109.tar.xz
Change-Id: I19bca9fc6762d4e63bcf3e4cba88bbe560d9c76c
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/arch/powerpc/lib/inst.c b/arch/powerpc/lib/inst.c
new file mode 100644
index 0000000..9cc17eb
--- /dev/null
+++ b/arch/powerpc/lib/inst.c
@@ -0,0 +1,73 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright 2020, IBM Corporation.
+ */
+
+#include <linux/uaccess.h>
+#include <asm/disassemble.h>
+#include <asm/inst.h>
+#include <asm/ppc-opcode.h>
+
+#ifdef CONFIG_PPC64
+int probe_user_read_inst(struct ppc_inst *inst,
+ struct ppc_inst __user *nip)
+{
+ unsigned int val, suffix;
+ int err;
+
+ err = copy_from_user_nofault(&val, nip, sizeof(val));
+ if (err)
+ return err;
+ if (get_op(val) == OP_PREFIX) {
+ err = copy_from_user_nofault(&suffix, (void __user *)nip + 4, 4);
+ *inst = ppc_inst_prefix(val, suffix);
+ } else {
+ *inst = ppc_inst(val);
+ }
+ return err;
+}
+
+int probe_kernel_read_inst(struct ppc_inst *inst,
+ struct ppc_inst *src)
+{
+ unsigned int val, suffix;
+ int err;
+
+ err = copy_from_kernel_nofault(&val, src, sizeof(val));
+ if (err)
+ return err;
+ if (get_op(val) == OP_PREFIX) {
+ err = copy_from_kernel_nofault(&suffix, (void *)src + 4, 4);
+ *inst = ppc_inst_prefix(val, suffix);
+ } else {
+ *inst = ppc_inst(val);
+ }
+ return err;
+}
+#else /* !CONFIG_PPC64 */
+int probe_user_read_inst(struct ppc_inst *inst,
+ struct ppc_inst __user *nip)
+{
+ unsigned int val;
+ int err;
+
+ err = copy_from_user_nofault(&val, nip, sizeof(val));
+ if (!err)
+ *inst = ppc_inst(val);
+
+ return err;
+}
+
+int probe_kernel_read_inst(struct ppc_inst *inst,
+ struct ppc_inst *src)
+{
+ unsigned int val;
+ int err;
+
+ err = copy_from_kernel_nofault(&val, src, sizeof(val));
+ if (!err)
+ *inst = ppc_inst(val);
+
+ return err;
+}
+#endif /* CONFIG_PPC64 */