Hi, On Mon, Sep 17, 2018 at 12:43:27PM +0800, Jun Yao wrote: > Version 5 changes: > 1. Correct spelling and indentation errors[1]. > 2. Update init_mm.pgd by assembly[2]. > 3. Simplify set_p?d() by introducing set_swapper_pgd()[3]. > 4. Reduce unnecessary tlbi for every write to swapper_pg_dir > during paging_init()[3]. > > v4: https://www.spinics.net/lists/arm-kernel/msg672195.html > v3: https://www.spinics.net/lists/arm-kernel/msg662537.html > v2: https://patchwork.kernel.org/patch/10485641/ > v1: https://patchwork.kernel.org/patch/10476595/ > > [1] https://www.spinics.net/lists/arm-kernel/msg675189.html > [2] https://www.spinics.net/lists/arm-kernel/msg675193.html > [3] https://www.spinics.net/lists/arm-kernel/msg675196.html > > Jun Yao (6): > arm64/mm: Introduce the init_pg_dir. > arm64/mm: Pass ttbr1 as a parameter to __enable_mmu(). > arm64/mm: Create the initial page table in the init_pg_dir. > arm64/mm: Create the final page table directly in swapper_pg_dir. > arm64/mm: Populate the swapper_pg_dir by fixmap. > arm64/mm: Move {idmap_pg_dir .. swapper_pg_dir} to rodata section. > > arch/arm64/include/asm/assembler.h | 29 ++++++++++++++++++ > arch/arm64/include/asm/pgtable.h | 36 ++++++++++++++++++---- > arch/arm64/kernel/asm-offsets.c | 1 + > arch/arm64/kernel/head.S | 48 ++++++++++++++++++++---------- > arch/arm64/kernel/sleep.S | 1 + > arch/arm64/kernel/vmlinux.lds.S | 47 +++++++++++++++++++---------- > arch/arm64/mm/mmu.c | 45 +++++++++++++--------------- > 7 files changed, 147 insertions(+), 60 deletions(-)
I've pushed a branch with the cleanups I requested [1] folded in. I'm still a bit worried about the pgd lock, but otherwise I think this is sound. I intend to throw some testing at it, just in case. If you're happy with that branch, I'll ask Will and Catalin to consider picking it up. Thanks, Mark. [1] git://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git arm64/ro-swapper
