Re: [PATCH 2/5] Protectable Memory Allocator

[Igor Stoppa]

On 06/06/17 09:25, Christoph Hellwig wrote:
> On Tue, Jun 06, 2017 at 01:44:32PM +0900, Tetsuo Handa wrote:

[..]

>> As far as I know, not all CONFIG_MMU=y architectures provide
>> set_memory_ro()/set_memory_rw(). You need to provide fallback for
>> architectures which do not provide set_memory_ro()/set_memory_rw()
>> or kernels built with CONFIG_MMU=n.
> 
> I think we'll just need to generalize CONFIG_STRICT_MODULE_RWX and/or
> ARCH_HAS_STRICT_MODULE_RWX so there is a symbol to key this off.

Would STRICT_KERNEL_RWX work? It's already present.
If both kernel text and rodata can be protected, so can pmalloc data.

---
igor