On Mon, 5 Oct 2020 13:54:42 +0200 Pierre Morel <pmorel@xxxxxxxxxxxxx> wrote: [...] > While doing a page allocator, the topology is not the only > characteristic we may need to specify. > Specific page characteristics like rights, access flags, cache > behavior may be useful when testing I/O for some architectures. > This obviously will need some connection to the MMU handling. > > Wouldn't it be interesting to use a bitmap flag as argument to > page_alloc() to define separate regions, even if the connection with > the MMU is done in a future series? the physical allocator is only concerned with the physical pages. if you need special MMU flags to be set, then you should enable the MMU and fiddle with the flags and settings yourself.
