diff options
| author | Jan Kratochvil <jan.kratochvil@redhat.com> | 2008-07-22 20:55:04 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2008-08-01 12:43:04 -0700 |
| commit | 3ce75c55b46c23df8faeba4ad2c2e14dc94ffb16 (patch) | |
| tree | aa80fc2745948689ca93b5928b972d83f2cc86a2 | |
| parent | d4f3865285ebc54998c341c57498de96f8daf4d0 (diff) | |
| download | lwn-3ce75c55b46c23df8faeba4ad2c2e14dc94ffb16.tar.gz lwn-3ce75c55b46c23df8faeba4ad2c2e14dc94ffb16.zip | |
x86: fix crash due to missing debugctlmsr on AMD K6-3
commit d536b1f86591fb081c7a56eab04e711eb4dab951 upstream
currently if you use PTRACE_SINGLEBLOCK on AMD K6-3 (i586) it will crash.
Kernel now wrongly assumes existing DEBUGCTLMSR MSR register there.
Removed the assumption also for some other non-K6 CPUs but I am not sure there
(but it can only bring small inefficiency there if my assumption is wrong).
Based on info from Roland McGrath, Chuck Ebbert and Mikulas Patocka.
More info at:
https://bugzilla.redhat.com/show_bug.cgi?id=456175
Signed-off-by: Jan Kratochvil <jan.kratochvil@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | arch/x86/Kconfig.cpu | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/Kconfig.cpu b/arch/x86/Kconfig.cpu index 2ad6301849a1..dd138a29d8db 100644 --- a/arch/x86/Kconfig.cpu +++ b/arch/x86/Kconfig.cpu @@ -414,4 +414,4 @@ config X86_MINIMUM_CPU_FAMILY config X86_DEBUGCTLMSR def_bool y - depends on !(M586MMX || M586TSC || M586 || M486 || M386) + depends on !(MK6 || MWINCHIPC6 || MWINCHIP2 || MWINCHIP3D || MCYRIXIII || M586MMX || M586TSC || M586 || M486 || M386) |