x86: debugctlmsr kconfig

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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>

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Roland McGrath 2008-01-30 13:30:54 +01:00 • committed by Ingo Molnar

parent d2499d8b6c

commit 0a049bb0ab

1 changed files with 4 additions and 0 deletions

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arch/x86/Kconfig.cpu

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