On Thu, Aug 15, 2019 at 07:28:57PM +0800, guoren@xxxxxxxxxx wrote: > From: Guo Ren <ren_guo@xxxxxxxxx> > > Implement the following apis to meet usage in different scenarios. > > - ioremap (NonCache + StrongOrder) > - ioremap_nocache (NonCache + StrongOrder) > - ioremap_wc (NonCache + WeakOrder ) > - ioremap_cache ( Cache + WeakOrder ) > > Also change flag VM_ALLOC to VM_IOREMAP in get_vm_area_caller. Looks generally fine, but two comments: - do you have a need for ioremap_cache? We are generally try to phase it out in favour of memremap, and it is generally only used by arch specific code. - I have a big series pending to clean up the mess with our ioremap_* functions, including adding a generic implementation that csky should be able to use. Unless this patch is urgent it might make sense to rebase it on top. Here is my current tree, I plan to post it soon: http://git.infradead.org/users/hch/misc.git/shortlog/refs/heads/generic-ioremap
