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| author | Jan Kiszka <jan.kiszka@siemens.com> | 2008-10-06 13:50:59 -0500 |
|---|---|---|
| committer | Jason Wessel <jason.wessel@windriver.com> | 2008-10-06 13:50:59 -0500 |
| commit | e85ceae9102f6e3c1d707e7ac88fa48d252e9cfa (patch) | |
| tree | c0ea708310452d42b35ea3eb422654fc4fd1f778 /kernel/kgdb.c | |
| parent | fec6ed1d1f9b78a6acb4a3eb2c46c812ac2e96f0 (diff) | |
| download | op-kernel-dev-e85ceae9102f6e3c1d707e7ac88fa48d252e9cfa.zip op-kernel-dev-e85ceae9102f6e3c1d707e7ac88fa48d252e9cfa.tar.gz | |
kgdb, x86: Avoid invoking kgdb_nmicallback twice per NMI
Stress-testing KVM's latest NMI support with kgdbts inside an SMP guest,
I came across spurious unhandled NMIs while running the singlestep test.
Looking closer at the code path each NMI takes when KGDB is enabled, I
noticed that kgdb_nmicallback is called twice per event: One time via
DIE_NMI_IPI notification, the second time on DIE_NMI. Removing the first
invocation cures the unhandled NMIs here.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Diffstat (limited to 'kernel/kgdb.c')
0 files changed, 0 insertions, 0 deletions
