Re: [PATCH -v8 -rc3] Security: Introduce security= boot parameter

[James Morris]

On Thu, 6 Mar 2008, Ahmed S. Darwish wrote:

> Would you mind answering my confusions below so I can do the change
> with good understanding ?
> 
> I see preempt_disable() before calling security and vfs_caches init,
> but what will prevent two processors/cores from executing
> security_module_enable() concurrently (thus possibly corrupting
> chosen_lsm) ?
> security_module_enable() is also now used in __init init_smk_fs().
> 
> Or the init path got executed serially ?

The init phase only runs on one cpu, see the lock_kernel() in 
kernel_init(), from which context the initcalls are eventually run in 
sequence.


- James
-- 
James Morris
<jmorris@xxxxxxxxx>
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