Commit 0a049bb0 authored Jan 30, 2008 by Roland McGrath Committed by Ingo Molnar Jan 30, 2008

x86: debugctlmsr kconfig



This adds the (internal) Kconfig macro CONFIG_X86_DEBUGCTLMSR,
to be defined when configuring to support only hardware that
definitely supports MSR_IA32_DEBUGCTLMSR with the BTF flag.

The Intel documentation says "P6 family" and later processors all have it.
I think the Kconfig dependencies are right to have it set for those and
unset for others (i.e., when 586 and earlier are supported).

Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

parent d2499d8b

arch/x86/Kconfig.cpu

+4 −0

Original line number	Diff line number	Diff line
		@@ -399,3 +399,7 @@ config X86_MINIMUM_CPU_FAMILY
		default "4" if X86_32 && (X86_XADD \|\| X86_CMPXCHG \|\| X86_BSWAP \|\| X86_WP_WORKS_OK)
		default "3"

		config X86_DEBUGCTLMSR
		bool
		depends on !(M586MMX \|\| M586TSC \|\| M586 \|\| M486 \|\| M386)
		default y