On 06/06/2017 04:34 AM, Igor Stoppa wrote: > 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 > > -- > To unsubscribe, send a message with 'unsubscribe linux-mm' in > the body to majord...@kvack.org. For more info on Linux MM, > see: http://www.linux-mm.org/ . > Don't email: <a href=mailto:"d...@kvack.org";> em...@kvack.org </a> >
There's already ARCH_HAS_SET_MEMORY for this purpose. Thanks, Laura
