Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=0a049bb0ab807b4a95dce9cd0b603c01c199a287
Commit: 0a049bb0ab807b4a95dce9cd0b603c01c199a287
Parent: d2499d8b6c94df02629631807dd96deae7aa7637
Author: Roland McGrath <[EMAIL PROTECTED]>
AuthorDate: Wed Jan 30 13:30:54 2008 +0100
Committer: Ingo Molnar <[EMAIL PROTECTED]>
CommitDate: Wed Jan 30 13:30:54 2008 +0100
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 <[EMAIL PROTECTED]>
Signed-off-by: Ingo Molnar <[EMAIL PROTECTED]>
Signed-off-by: Thomas Gleixner <[EMAIL PROTECTED]>
---
arch/x86/Kconfig.cpu | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/arch/x86/Kconfig.cpu b/arch/x86/Kconfig.cpu
index c301622..69e2ee4 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
-
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