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a9ff696160
Making virt_to_pfn() a static inline taking a strongly typed (const void *) makes the contract of a passing a pointer of that type to the function explicit and exposes any misuse of the macro virt_to_pfn() acting polymorphic and accepting many types such as (void *), (unitptr_t) or (unsigned long) as arguments without warnings. Doing this is a bit intrusive: virt_to_pfn() requires PHYS_PFN_OFFSET and PAGE_SHIFT to be defined, and this is defined in <asm/page.h>, so this must be included *before* <asm/memory.h>. The use of macros were obscuring the unclear inclusion order here, as the macros would eventually be resolved, but a static inline like this cannot be compiled with unresolved macros. The naive solution to include <asm/page.h> at the top of <asm/memory.h> does not work, because <asm/memory.h> sometimes includes <asm/page.h> at the end of itself, which would create a confusing inclusion loop. So instead, take the approach to always unconditionally include <asm/page.h> at the end of <asm/memory.h> arch/arm uses <asm/memory.h> explicitly in a lot of places, however it turns out that if we just unconditionally include <asm/memory.h> into <asm/page.h> and switch all inclusions of <asm/memory.h> to <asm/page.h> instead, we enforce the right order and <asm/memory.h> will always have access to the definitions. Put an inclusion guard in place making it impossible to include <asm/memory.h> explicitly. Link: https://lore.kernel.org/linux-mm/20220701160004.2ffff4e5ab59a55499f4c736@linux-foundation.org/ Signed-off-by: Linus Walleij <linus.walleij@linaro.org> |
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abort-ev4.S | ||
abort-ev4t.S | ||
abort-ev5t.S | ||
abort-ev5tj.S | ||
abort-ev6.S | ||
abort-ev7.S | ||
abort-lv4t.S | ||
abort-macro.S | ||
abort-nommu.S | ||
alignment.c | ||
cache-b15-rac.c | ||
cache-fa.S | ||
cache-feroceon-l2.c | ||
cache-l2x0-pmu.c | ||
cache-l2x0.c | ||
cache-nop.S | ||
cache-tauros2.c | ||
cache-tauros3.h | ||
cache-uniphier.c | ||
cache-v4.S | ||
cache-v4wb.S | ||
cache-v4wt.S | ||
cache-v6.S | ||
cache-v7.S | ||
cache-v7m.S | ||
cache-xsc3l2.c | ||
context.c | ||
copypage-fa.c | ||
copypage-feroceon.c | ||
copypage-v4mc.c | ||
copypage-v4wb.c | ||
copypage-v4wt.c | ||
copypage-v6.c | ||
copypage-xsc3.c | ||
copypage-xscale.c | ||
dma-mapping-nommu.c | ||
dma-mapping.c | ||
dma.h | ||
dump.c | ||
extable.c | ||
fault-armv.c | ||
fault.c | ||
fault.h | ||
flush.c | ||
fsr-2level.c | ||
fsr-3level.c | ||
hugetlbpage.c | ||
idmap.c | ||
init.c | ||
iomap.c | ||
ioremap.c | ||
kasan_init.c | ||
Kconfig | ||
l2c-common.c | ||
l2c-l2x0-resume.S | ||
Makefile | ||
mm.h | ||
mmap.c | ||
mmu.c | ||
nommu.c | ||
pabort-legacy.S | ||
pabort-v6.S | ||
pabort-v7.S | ||
pageattr.c | ||
pgd.c | ||
physaddr.c | ||
pmsa-v7.c | ||
pmsa-v8.c | ||
proc-arm7tdmi.S | ||
proc-arm9tdmi.S | ||
proc-arm720.S | ||
proc-arm740.S | ||
proc-arm920.S | ||
proc-arm922.S | ||
proc-arm925.S | ||
proc-arm926.S | ||
proc-arm940.S | ||
proc-arm946.S | ||
proc-arm1020.S | ||
proc-arm1020e.S | ||
proc-arm1022.S | ||
proc-arm1026.S | ||
proc-fa526.S | ||
proc-feroceon.S | ||
proc-macros.S | ||
proc-mohawk.S | ||
proc-sa110.S | ||
proc-sa1100.S | ||
proc-syms.c | ||
proc-v6.S | ||
proc-v7-2level.S | ||
proc-v7-3level.S | ||
proc-v7-bugs.c | ||
proc-v7.S | ||
proc-v7m.S | ||
proc-xsc3.S | ||
proc-xscale.S | ||
ptdump_debugfs.c | ||
pv-fixup-asm.S | ||
tcm.h | ||
tlb-fa.S | ||
tlb-v4.S | ||
tlb-v4wb.S | ||
tlb-v4wbi.S | ||
tlb-v6.S | ||
tlb-v7.S |