PAGE_KERNEL_IO 244 arch/x86/mm/ioremap.c prot = PAGE_KERNEL_IO; PAGE_KERNEL_IO 438 arch/x86/xen/setup.c mfn_pte(pfn, PAGE_KERNEL_IO), 0); PAGE_KERNEL_IO 265 drivers/gpu/drm/i915/gem/i915_gem_pages.c pgprot = pgprot_writecombine(PAGE_KERNEL_IO); PAGE_KERNEL_IO 57 include/asm-generic/fixmap.h #define FIXMAP_PAGE_IO PAGE_KERNEL_IO