diff options
| author | Marc Zyngier <marc.zyngier@arm.com> | 2018-07-20 10:53:01 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-07-22 14:28:50 +0200 |
| commit | 1bffd48690119d79468355ebcf992475beefb0b5 (patch) | |
| tree | 1fa4a7604bf0cfa5f7303e821489b4aad27a083a /arch/arm64/kernel/cpu_errata.c | |
| parent | 5ad09d2abb5a0e4193b81c147efc828e13caf2ca (diff) | |
arm64: Add per-cpu infrastructure to call ARCH_WORKAROUND_2
commit 5cf9ce6e5ea50f805c6188c04ed0daaec7b6887d upstream.
In a heterogeneous system, we can end up with both affected and
unaffected CPUs. Let's check their status before calling into the
firmware.
Reviewed-by: Julien Grall <julien.grall@arm.com>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/arm64/kernel/cpu_errata.c')
| -rw-r--r-- | arch/arm64/kernel/cpu_errata.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm64/kernel/cpu_errata.c b/arch/arm64/kernel/cpu_errata.c index 44798a700f6c..62530ba60497 100644 --- a/arch/arm64/kernel/cpu_errata.c +++ b/arch/arm64/kernel/cpu_errata.c @@ -229,6 +229,8 @@ static int qcom_enable_link_stack_sanitization(void *data) #endif /* CONFIG_HARDEN_BRANCH_PREDICTOR */ #ifdef CONFIG_ARM64_SSBD +DEFINE_PER_CPU_READ_MOSTLY(u64, arm64_ssbd_callback_required); + void __init arm64_update_smccc_conduit(struct alt_instr *alt, __le32 *origptr, __le32 *updptr, int nr_inst) |