Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fixes from Peter Anvin:
 "There is a small EFI fix and a big power regression fix in this batch.

  My queue also had a fix for downing a CPU when there are insufficient
  number of IRQ vectors available, but I'm holding that one for now due
  to recent bug reports"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/efi: Don't select EFI from certain special ACPI drivers
  x86 idle: Repair large-server 50-watt idle-power regression

Author: torvalds

arch/x86/kernel/cpu/intel.c

@@ -387,7 +387,8 @@ static void init_intel(struct cpuinfo_x86 *c)
 			set_cpu_cap(c, X86_FEATURE_PEBS);
 	}
 
-	if (c->x86 == 6 && c->x86_model == 29 && cpu_has_clflush)
+	if (c->x86 == 6 && cpu_has_clflush &&
+	    (c->x86_model == 29 || c->x86_model == 46 || c->x86_model == 47))
 		set_cpu_cap(c, X86_FEATURE_CLFLUSH_MONITOR);
 
 #ifdef CONFIG_X86_64

drivers/acpi/Kconfig

@@ -348,7 +348,6 @@ source "drivers/acpi/apei/Kconfig"
 config ACPI_EXTLOG
 	tristate "Extended Error Log support"
 	depends on X86_MCE && X86_LOCAL_APIC
-	select EFI
 	select UEFI_CPER
 	default n
 	help

drivers/acpi/apei/Kconfig

@@ -2,7 +2,6 @@ config ACPI_APEI
 	bool "ACPI Platform Error Interface (APEI)"
 	select MISC_FILESYSTEMS
 	select PSTORE
-	select EFI
 	select UEFI_CPER
 	depends on X86
 	help

drivers/firmware/Makefile

@@ -14,3 +14,4 @@ obj-$(CONFIG_FIRMWARE_MEMMAP)	+= memmap.o
 
 obj-$(CONFIG_GOOGLE_FIRMWARE)	+= google/
 obj-$(CONFIG_EFI)		+= efi/
+obj-$(CONFIG_UEFI_CPER)		+= efi/

drivers/firmware/efi/Kconfig

@@ -36,7 +36,7 @@ config EFI_VARS_PSTORE_DEFAULT_DISABLE
 	  backend for pstore by default. This setting can be overridden
 	  using the efivars module's pstore_disable parameter.
 
-config UEFI_CPER
-	def_bool n
-
 endmenu
+
+config UEFI_CPER
+	bool

drivers/firmware/efi/Makefile

@@ -1,7 +1,7 @@
 #
 # Makefile for linux kernel
 #
-obj-y					+= efi.o vars.o
+obj-$(CONFIG_EFI)			+= efi.o vars.o
 obj-$(CONFIG_EFI_VARS)			+= efivars.o
 obj-$(CONFIG_EFI_VARS_PSTORE)		+= efi-pstore.o
 obj-$(CONFIG_UEFI_CPER)			+= cper.o

drivers/idle/intel_idle.c

@@ -377,6 +377,9 @@ static int intel_idle(struct cpuidle_device *dev,
 
 	if (!current_set_polling_and_test()) {
 
+		if (this_cpu_has(X86_FEATURE_CLFLUSH_MONITOR))
+			clflush((void *)&current_thread_info()->flags);
+
 		__monitor((void *)&current_thread_info()->flags, 0, 0);
 		smp_mb();
 		if (!need_resched())