arm64/kernel: enable A53 erratum #8434319 handling at runtime

Omit patching of ADRP instruction at module load time if the current
CPUs are not susceptible to the erratum.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
[will: Drop duplicate initialisation of .def_scope field]
Signed-off-by: Will Deacon <will.deacon@arm.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/arch/arm64/kernel/module.c b/arch/arm64/kernel/module.c
index f9d824947c34..719fde8dcc19 100644
--- a/arch/arm64/kernel/module.c
+++ b/arch/arm64/kernel/module.c
@@ -203,6 +203,7 @@ static int reloc_insn_adrp(struct module *mod, __le32 *place, u64 val)
         u32 insn;
 
         if (!IS_ENABLED(CONFIG_ARM64_ERRATUM_843419) ||
+            !cpus_have_const_cap(ARM64_WORKAROUND_843419) ||
             ((u64)place & 0xfff) < 0xff8)
                 return reloc_insn_imm(RELOC_OP_PAGE, place, val, 12, 21,
                                       AARCH64_INSN_IMM_ADR);