config X86
	select 64BIT
	def_bool y

config X86_64
	def_bool 64BIT

menu "x86 Options"

config PCI_VERBOSE
	bool "Verbose PCI Output"
	default n
	help
	  Will print out extra information related to PCI.

config NOFASTCALL_FSBASE
	depends on X86_64
	bool "Disable fastcall to set FS base"
	default n
	help
	  Disable the fast path syscall to set FS base.  If your hardware
	  allows setting FS base from userspace, you can say y to disable the
	  fastcall for a slight improvement for all syscalls.  If unsure, say
	  n.

endmenu

menu "x86 Hacks"

config LOUSY_LAPIC_TIMER
	bool "Lousy Local APIC Timer"
	default n
	help
	  This turns our one-shot APIC timer into a periodic timer.  If your
	  system seems to lock up until you hit the keyboard, say 'Y' here and
	  report the results.

	  Qemu without KVM had issues firing a one-shot LAPIC timer (the timer
	  IRQ would only go off when some other IRQ fired), but it worked with
	  a periodic tick.  Since we aggressively disarm the timer, this config
	  shouldn't be a performance hit.

config NOMTRRS
	bool "Disable MTRRs"
	default y
	help
	  Old debug option from when we were having issues with MTRRs.  If your
	  machine won't boot, try turning this on.

config KB_CORE0_ONLY
	bool "Keyboard from core0 only"
	default n
	help
	  Say 'n' unless you are using a buggy x86 machine that can't handle
	  polling the keyboard PIO from cores other than core 0.

config X86_DISABLE_KEYBOARD
	bool "Disable Keyboard"
	default n
	help
	  x86 machines with a legacy USB keyboard often implement the USB stack
	  in SMM mode.  When doing anything with the keyboard, including
	  polling the keyboard from the kernel monitor, SMM mode can
	  dramatically interfere with other cores (like a 10-15x performance
	  impact on some benchmarks).

	  Say 'y' if you have such a machine and do not need the keyboard.

config ENABLE_LEGACY_USB
	bool "Enable Legacy USB"
	default n
	help
	  Say 'y' if you want to use a USB keyboard.  Given that we do not have
	  a USB stack, disabling legacy USB means USB keyboards will not work.
	  We disable legacy USB by default, since our primary console
	  communication is serial, and legacy USB support results in SMM
	  interference that affects all cores.

endmenu