> 2023年2月14日 23:21，Thomas Weißschuh <linux@xxxxxxxxxxxxxx> 写道：
>
> On Tue, Feb 14, 2023 at 05:51:09PM +0800, Coly Li wrote:
>>
>>
>>> 2023年2月14日 11:13，Thomas Weißschuh <linux@xxxxxxxxxxxxxx> 写道：
>>>
>>> Since commit ee6d3dd4ed48 ("driver core: make kobj_type constant.")
>>> the driver core allows the usage of const struct kobj_type.
>>>
>>> Take advantage of this to constify the structure definitions to prevent
>>> modification at runtime.
>>>
>>
>> How the const structure definition can prevent modification at run time?
>
> It will be put into .rodata instead of .data by the compiler.
> The .rodata section is mapped as read-only via the pagetable.
>
> See Documentation/security/self-protection.rst
> "Function pointers and sensitive variables must not be writable".
I see. Thanks for the information.
This patch will be added into my testing queue, and submitted later.
Coly Li
