Commit 0a049bb0 authored by Roland McGrath's avatar Roland McGrath Committed by Ingo Molnar

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: default avatarRoland McGrath <>
Signed-off-by: default avatarIngo Molnar <>
Signed-off-by: default avatarThomas Gleixner <>
parent d2499d8b
......@@ -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"
depends on !(M586MMX || M586TSC || M586 || M486 || M386)
default y
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