On Sun, May 03, 2020 at 06:09:09PM -0700, ira.weiny@xxxxxxxxx wrote: > From: Ira Weiny <ira.weiny@xxxxxxxxx> > > We want to support kmap_atomic_prot() on all architectures and it makes > sense to define kmap_atomic() to use the default kmap_prot. > > So we ensure all arch's have a globally available kmap_prot either as a > define or exported symbol. FYI, I still think a #ifndef kmap_prot #define kmap_prot PAGE_KERNEL #endif in linux/highmem.h would be nicer. Then only xtensa and sparc need to override it and clearly stand out.