Re: [Patch 4/4] module: trim exception table in module_free()

[Amerigo Wang <amwang@redhat.com>]

Rusty Russell wrote:
> On Tue, 26 May 2009 06:05:39 pm Amerigo Wang wrote:
>   
>>  void module_free(struct module *mod, void *module_region)
>>  {
>>  	vfree(module_region);
>> -	/* FIXME: If module_region == mod->init_region, trim exception
>> -	   table entries. */
>> +	if (module_region == mod->module_init)
>> +		mod->num_exentries = 0;
>>  }
>>     
>
> Hi Amerigo,
>
>    This looks wrong.  The extable covers both init and core exception entries.   
> We want to remove the ones in the module_init section.  The good news is that 
> it's sorted, so they're either at the start or the end (except sparc 32).
>   

Hi, Rusty.

Yes? The extable of a module is in '__ex_table' section, and during the 
section transfer, one
section will be either in module_init or module_core, so its entries are 
only in one of them,
not both, right?

Thank you.