diff options
Diffstat (limited to 'arch/arm64/kernel/armv8_deprecated.c')
| -rw-r--r-- | arch/arm64/kernel/armv8_deprecated.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/arch/arm64/kernel/armv8_deprecated.c b/arch/arm64/kernel/armv8_deprecated.c index 1febd412b4d2..e737c6295ec7 100644 --- a/arch/arm64/kernel/armv8_deprecated.c +++ b/arch/arm64/kernel/armv8_deprecated.c @@ -52,10 +52,8 @@ struct insn_emulation { int min; int max; - /* - * sysctl for this emulation + a sentinal entry. - */ - struct ctl_table sysctl[2]; + /* sysctl for this emulation */ + struct ctl_table sysctl; }; #define ARM_OPCODE_CONDTEST_FAIL 0 @@ -464,6 +462,9 @@ static int run_all_insn_set_hw_mode(unsigned int cpu) for (int i = 0; i < ARRAY_SIZE(insn_emulations); i++) { struct insn_emulation *insn = insn_emulations[i]; bool enable = READ_ONCE(insn->current_mode) == INSN_HW; + if (insn->status == INSN_UNAVAILABLE) + continue; + if (insn->set_hw_mode && insn->set_hw_mode(enable)) { pr_warn("CPU[%u] cannot support the emulation of %s", cpu, insn->name); @@ -506,7 +507,7 @@ static int update_insn_emulation_mode(struct insn_emulation *insn, return ret; } -static int emulation_proc_handler(struct ctl_table *table, int write, +static int emulation_proc_handler(const struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos) { @@ -558,7 +559,7 @@ static void __init register_insn_emulation(struct insn_emulation *insn) update_insn_emulation_mode(insn, INSN_UNDEF); if (insn->status != INSN_UNAVAILABLE) { - sysctl = &insn->sysctl[0]; + sysctl = &insn->sysctl; sysctl->mode = 0644; sysctl->maxlen = sizeof(int); @@ -569,7 +570,7 @@ static void __init register_insn_emulation(struct insn_emulation *insn) sysctl->extra2 = &insn->max; sysctl->proc_handler = emulation_proc_handler; - register_sysctl("abi", sysctl); + register_sysctl_sz("abi", sysctl, 1); } } |