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由 Paul Mackerras 提交于
The code we had to clear the MSR_SE bit was not doing anything because the caller (ultimately single_step_exception() in traps.c) had already cleared. Instead of trying to leave MSR_SE set if the TIF_SINGLESTEP flag is set (which indicates that the process is being single-stepped by ptrace), we instead return NOTIFY_DONE in that case, which means the caller will generate a SIGTRAP for the process. Signed-off-by: NPaul Mackerras <paulus@samba.org>
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