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authorRoland McGrath <roland@redhat.com>2008-01-30 13:30:54 +0100
committerIngo Molnar <mingo@elte.hu>2008-01-30 13:30:54 +0100
commit0a049bb0ab807b4a95dce9cd0b603c01c199a287 (patch)
tree2a89d562b28844a4b496fe8db8e307df2174f4a4 /arch/x86/Kconfig.cpu
parentd2499d8b6c94df02629631807dd96deae7aa7637 (diff)
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>
Diffstat (limited to 'arch/x86/Kconfig.cpu')
-rw-r--r--arch/x86/Kconfig.cpu4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/Kconfig.cpu b/arch/x86/Kconfig.cpu
index c30162202dc4..69e2ee44fdff 100644
--- a/arch/x86/Kconfig.cpu
+++ b/arch/x86/Kconfig.cpu
@@ -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