diff --git a/arch/x86/kernel/cpu/resctrl/core.c b/arch/x86/kernel/cpu/resctrl/core.c index 0cf890ae0de2..40380731c588 100644 --- a/arch/x86/kernel/cpu/resctrl/core.c +++ b/arch/x86/kernel/cpu/resctrl/core.c @@ -259,7 +259,7 @@ static inline bool rdt_get_mb_table(struct rdt_resource *r) return false; } -static bool rdt_get_mem_config(struct rdt_resource *r) +static bool __get_mem_config(struct rdt_resource *r) { union cpuid_0x10_3_eax eax; union cpuid_0x10_x_edx edx; @@ -794,6 +794,14 @@ static bool __init rdt_cpu_has(int flag) return ret; } +static __init bool get_mem_config(void) +{ + if (rdt_cpu_has(X86_FEATURE_MBA)) + return __get_mem_config(&rdt_resources_all[RDT_RESOURCE_MBA]); + + return false; +} + static __init bool get_rdt_alloc_resources(void) { bool ret = false; @@ -818,10 +826,9 @@ static __init bool get_rdt_alloc_resources(void) ret = true; } - if (rdt_cpu_has(X86_FEATURE_MBA)) { - if (rdt_get_mem_config(&rdt_resources_all[RDT_RESOURCE_MBA])) - ret = true; - } + if (get_mem_config()) + ret = true; + return ret; } @@ -840,7 +847,7 @@ static __init bool get_rdt_mon_resources(void) return !rdt_get_mon_l3_config(&rdt_resources_all[RDT_RESOURCE_L3]); } -static __init void rdt_quirks(void) +static __init void __check_quirks_intel(void) { switch (boot_cpu_data.x86_model) { case INTEL_FAM6_HASWELL_X: @@ -855,9 +862,14 @@ static __init void rdt_quirks(void) } } +static __init void check_quirks(void) +{ + if (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL) + __check_quirks_intel(); +} + static __init bool get_rdt_resources(void) { - rdt_quirks(); rdt_alloc_capable = get_rdt_alloc_resources(); rdt_mon_capable = get_rdt_mon_resources(); @@ -871,6 +883,8 @@ static int __init resctrl_late_init(void) struct rdt_resource *r; int state, ret; + check_quirks(); + if (!get_rdt_resources()) return -ENODEV;