On Sun, Nov 29, 2020 at 01:25:52AM +1000, Nicholas Piggin wrote: > This changes the awkward approach where architectures provide init > functions to determine which levels they can provide large mappings for, > to one where the arch is queried for each call. > > This removes code and indirection, and allows constant-folding of dead > code for unsupported levels. > > This also adds a prot argument to the arch query. This is unused > currently but could help with some architectures (e.g., some powerpc > processors can't map uncacheable memory with large pages). > > Cc: linuxppc-dev@xxxxxxxxxxxxxxxx > Cc: Catalin Marinas <catalin.marinas@xxxxxxx> > Cc: Will Deacon <will@xxxxxxxxxx> > Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx > Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx> > Cc: Ingo Molnar <mingo@xxxxxxxxxx> > Cc: Borislav Petkov <bp@xxxxxxxxx> > Cc: x86@xxxxxxxxxx > Cc: "H. Peter Anvin" <hpa@xxxxxxxxx> > Signed-off-by: Nicholas Piggin <npiggin@xxxxxxxxx> > --- > arch/arm64/include/asm/vmalloc.h | 8 +++ > arch/arm64/mm/mmu.c | 10 +-- For arm64: Acked-by: Catalin Marinas <catalin.marinas@xxxxxxx>
