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powerpc/kgdb: Do not set kgdb_single_step on ppc

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The kgdb_single_step flag has the possibility to indefinitely
hang the system on an SMP system.

The x86 arch have the same problem, and that problem was fixed by
commit 8097551d9ab9b9e3630(kgdb,x86: do not set kgdb_single_step
on x86). This patch does the same behaviors as x86's patch.

Signed-off-by: Dongdong Deng <dongdong.deng@windriver.com>
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Tiejun Chen 2012-08-22 16:10:18 +00:00 committed by Benjamin Herrenschmidt
parent 46c5c59e69
commit 572b411cb4
1 changed files with 0 additions and 1 deletions
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1
arch/powerpc/kernel/kgdb.c
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@ -410,7 +410,6 @@ int kgdb_arch_handle_exception(int vector, int signo, int err_code,
#else
linux_regs->msr |= MSR_SE;
#endif
kgdb_single_step = 1;
atomic_set(&kgdb_cpu_doing_single_step,
raw_smp_processor_id());
}