diff options
| -rw-r--r-- | arch/x86/include/asm/intel-family.h | 3 | ||||
| -rw-r--r-- | arch/x86/kernel/acpi/cstate.c | 8 |
2 files changed, 7 insertions, 4 deletions
diff --git a/arch/x86/include/asm/intel-family.h b/arch/x86/include/asm/intel-family.h index 4296c8e132b9..51ea36656edd 100644 --- a/arch/x86/include/asm/intel-family.h +++ b/arch/x86/include/asm/intel-family.h @@ -187,6 +187,9 @@ #define INTEL_XEON_PHI_KNL IFM(6, 0x57) /* Knights Landing */ #define INTEL_XEON_PHI_KNM IFM(6, 0x85) /* Knights Mill */ +/* Notational marker denoting the last Family 6 model */ +#define INTEL_FAM6_LAST IFM(6, 0xFF) + /* Family 15 - NetBurst */ #define INTEL_P4_WILLAMETTE IFM(15, 0x01) /* Also Xeon Foster */ #define INTEL_P4_PRESCOTT IFM(15, 0x03) diff --git a/arch/x86/kernel/acpi/cstate.c b/arch/x86/kernel/acpi/cstate.c index d25584255ab8..d5ac34186555 100644 --- a/arch/x86/kernel/acpi/cstate.c +++ b/arch/x86/kernel/acpi/cstate.c @@ -13,6 +13,7 @@ #include <linux/sched.h> #include <acpi/processor.h> +#include <asm/cpu_device_id.h> #include <asm/cpuid.h> #include <asm/mwait.h> #include <asm/special_insns.h> @@ -48,12 +49,11 @@ void acpi_processor_power_init_bm_check(struct acpi_processor_flags *flags, /* * On all recent Intel platforms, ARB_DISABLE is a nop. * So, set bm_control to zero to indicate that ARB_DISABLE - * is not required while entering C3 type state on - * P4, Core and beyond CPUs + * is not required while entering C3 type state. */ if (c->x86_vendor == X86_VENDOR_INTEL && - (c->x86 > 0xf || (c->x86 == 6 && c->x86_model >= 0x0f))) - flags->bm_control = 0; + (c->x86 > 15 || (c->x86_vfm >= INTEL_CORE2_MEROM && c->x86_vfm <= INTEL_FAM6_LAST))) + flags->bm_control = 0; if (c->x86_vendor == X86_VENDOR_CENTAUR) { if (c->x86 > 6 || (c->x86 == 6 && c->x86_model == 0x0f && |