diff options
| author | Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> | 2007-01-22 20:40:34 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-01-23 07:52:05 -0800 |
| commit | 58d9ce7d751fa11c6c8ea5dcd4d63b320aae1363 (patch) | |
| tree | 4b188a931722c9f510f625eadb5ab02fc1ad55cd /arch | |
| parent | bbe1a59b3a3d4af3869647d294618a23f6c9c6a4 (diff) | |
| download | lwn-58d9ce7d751fa11c6c8ea5dcd4d63b320aae1363.tar.gz lwn-58d9ce7d751fa11c6c8ea5dcd4d63b320aae1363.zip | |
[PATCH] Revert nmi_known_cpu() check during boot option parsing
Commit f2802e7f571c05f9a901b1f5bd144aa730ccc88e and its x86 version
(b7471c6da94d30d3deadc55986cc38d1ff57f9ca) adds nmi_known_cpu() check
while parsing boot options in x86_64 and i386.
With that, "nmi_watchdog=2" stops working for me on Intel Core 2 CPU
based system.
The problem is, setup_nmi_watchdog is called while parsing the boot
option and identify_cpu is not done yet. So, the return value of
nmi_known_cpu() is not valid at this point.
So revert that check. This should not have any adverse effect as the
nmi_known_cpu() check is done again later in enable_lapic_nmi_watchdog().
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Andi Kleen <ak@suse.de>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/i386/kernel/nmi.c | 8 | ||||
| -rw-r--r-- | arch/x86_64/kernel/nmi.c | 2 |
2 files changed, 1 insertions, 9 deletions
diff --git a/arch/i386/kernel/nmi.c b/arch/i386/kernel/nmi.c index a5e34d655965..1a6f8bb8881c 100644 --- a/arch/i386/kernel/nmi.c +++ b/arch/i386/kernel/nmi.c @@ -310,13 +310,7 @@ static int __init setup_nmi_watchdog(char *str) if ((nmi >= NMI_INVALID) || (nmi < NMI_NONE)) return 0; - /* - * If any other x86 CPU has a local APIC, then - * please test the NMI stuff there and send me the - * missing bits. Right now Intel P6/P4 and AMD K7 only. - */ - if ((nmi == NMI_LOCAL_APIC) && (nmi_known_cpu() == 0)) - return 0; /* no lapic support */ + nmi_watchdog = nmi; return 1; } diff --git a/arch/x86_64/kernel/nmi.c b/arch/x86_64/kernel/nmi.c index 186aebbae32d..9cb42ecb7f89 100644 --- a/arch/x86_64/kernel/nmi.c +++ b/arch/x86_64/kernel/nmi.c @@ -302,8 +302,6 @@ int __init setup_nmi_watchdog(char *str) if ((nmi >= NMI_INVALID) || (nmi < NMI_NONE)) return 0; - if ((nmi == NMI_LOCAL_APIC) && (nmi_known_cpu() == 0)) - return 0; /* no lapic support */ nmi_watchdog = nmi; return 1; } |