diff options
| author | Olof Johansson <olof@lixom.net> | 2019-12-05 13:16:58 -0800 |
|---|---|---|
| committer | Olof Johansson <olof@lixom.net> | 2019-12-05 13:18:54 -0800 |
| commit | 942e6f8a8314e5550e254519dfba4ccd5170421d (patch) | |
| tree | 75ec655b440fbc1c454247af38b5596dd8c78de9 /arch/arm/mm/proc-v7-bugs.c | |
| parent | 336bab731be76a90291697e51d2aed0ad67d7cb5 (diff) | |
| parent | b08baef02b26cf7c2123e4a24a2fa1fb7a593ffb (diff) | |
Merge mainline/master into arm/fixes
This brings in the mainline tree right after armsoc contents was merged
this release cycle, so that we can re-run savedefconfig, etc.
Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'arch/arm/mm/proc-v7-bugs.c')
| -rw-r--r-- | arch/arm/mm/proc-v7-bugs.c | 24 |
1 files changed, 10 insertions, 14 deletions
diff --git a/arch/arm/mm/proc-v7-bugs.c b/arch/arm/mm/proc-v7-bugs.c index 9a07916af8dd..c0fbfca5da8b 100644 --- a/arch/arm/mm/proc-v7-bugs.c +++ b/arch/arm/mm/proc-v7-bugs.c @@ -1,7 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 #include <linux/arm-smccc.h> #include <linux/kernel.h> -#include <linux/psci.h> #include <linux/smp.h> #include <asm/cp15.h> @@ -65,6 +64,9 @@ static void cpu_v7_spectre_init(void) break; #ifdef CONFIG_ARM_PSCI + case ARM_CPU_PART_BRAHMA_B53: + /* Requires no workaround */ + break; default: /* Other ARM CPUs require no workaround */ if (read_cpuid_implementor() == ARM_CPU_IMP_ARM) @@ -75,26 +77,20 @@ static void cpu_v7_spectre_init(void) case ARM_CPU_PART_CORTEX_A72: { struct arm_smccc_res res; - if (psci_ops.smccc_version == SMCCC_VERSION_1_0) - break; + arm_smccc_1_1_invoke(ARM_SMCCC_ARCH_FEATURES_FUNC_ID, + ARM_SMCCC_ARCH_WORKAROUND_1, &res); + if ((int)res.a0 != 0) + return; - switch (psci_ops.conduit) { - case PSCI_CONDUIT_HVC: - arm_smccc_1_1_hvc(ARM_SMCCC_ARCH_FEATURES_FUNC_ID, - ARM_SMCCC_ARCH_WORKAROUND_1, &res); - if ((int)res.a0 != 0) - break; + switch (arm_smccc_1_1_get_conduit()) { + case SMCCC_CONDUIT_HVC: per_cpu(harden_branch_predictor_fn, cpu) = call_hvc_arch_workaround_1; cpu_do_switch_mm = cpu_v7_hvc_switch_mm; spectre_v2_method = "hypervisor"; break; - case PSCI_CONDUIT_SMC: - arm_smccc_1_1_smc(ARM_SMCCC_ARCH_FEATURES_FUNC_ID, - ARM_SMCCC_ARCH_WORKAROUND_1, &res); - if ((int)res.a0 != 0) - break; + case SMCCC_CONDUIT_SMC: per_cpu(harden_branch_predictor_fn, cpu) = call_smc_arch_workaround_1; cpu_do_switch_mm = cpu_v7_smc_switch_mm; |