diff options
| -rw-r--r-- | arch/arm64/include/asm/cpucaps.h | 3 | ||||
| -rw-r--r-- | arch/arm64/kernel/cpu_errata.c | 9 | ||||
| -rw-r--r-- | arch/arm64/kernel/module-plts.c | 3 | ||||
| -rw-r--r-- | arch/arm64/kernel/module.c | 1 |
4 files changed, 14 insertions, 2 deletions
diff --git a/arch/arm64/include/asm/cpucaps.h b/arch/arm64/include/asm/cpucaps.h index bb263820de13..39134c46bb13 100644 --- a/arch/arm64/include/asm/cpucaps.h +++ b/arch/arm64/include/asm/cpucaps.h @@ -45,7 +45,8 @@ #define ARM64_HARDEN_BRANCH_PREDICTOR 24 #define ARM64_HARDEN_BP_POST_GUEST_EXIT 25 #define ARM64_HAS_RAS_EXTN 26 +#define ARM64_WORKAROUND_843419 27 -#define ARM64_NCAPS 27 +#define ARM64_NCAPS 28 #endif /* __ASM_CPUCAPS_H */ diff --git a/arch/arm64/kernel/cpu_errata.c b/arch/arm64/kernel/cpu_errata.c index b161abdd6e27..186c0fc61dcd 100644 --- a/arch/arm64/kernel/cpu_errata.c +++ b/arch/arm64/kernel/cpu_errata.c @@ -298,6 +298,15 @@ const struct arm64_cpu_capabilities arm64_errata[] = { MIDR_CPU_VAR_REV(1, 2)), }, #endif +#ifdef CONFIG_ARM64_ERRATUM_843419 + { + /* Cortex-A53 r0p[01234] */ + .desc = "ARM erratum 843419", + .capability = ARM64_WORKAROUND_843419, + MIDR_RANGE(MIDR_CORTEX_A53, 0x00, 0x04), + MIDR_FIXED(0x4, BIT(8)), + }, +#endif #ifdef CONFIG_ARM64_ERRATUM_845719 { /* Cortex-A53 r0p[01234] */ diff --git a/arch/arm64/kernel/module-plts.c b/arch/arm64/kernel/module-plts.c index 271b77390de0..fa3637284a3d 100644 --- a/arch/arm64/kernel/module-plts.c +++ b/arch/arm64/kernel/module-plts.c @@ -158,7 +158,8 @@ static unsigned int count_plts(Elf64_Sym *syms, Elf64_Rela *rela, int num, break; case R_AARCH64_ADR_PREL_PG_HI21_NC: case R_AARCH64_ADR_PREL_PG_HI21: - if (!IS_ENABLED(CONFIG_ARM64_ERRATUM_843419)) + if (!IS_ENABLED(CONFIG_ARM64_ERRATUM_843419) || + !cpus_have_const_cap(ARM64_WORKAROUND_843419)) break; /* 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); |