The set_init_mm_pgd() is reimplemented using assembly in order to
avoid being instrumented by kasan.
Test following configs with CONFIG_RANDOMIZE_BASE/UNMAP_KERNEL_AT_EL0/
CONFIG_ARM64_SW_TTBR0_PAN/CONFIG_KASAN_OUTLINE enabled on qemu:
1. CONFIG_ARM64_4K_PAGES/CONFIG_ARM64_VA_BITS_48
2. CONFIG_ARM64_4K_PAGES/CONFIG_ARM64_VA_BITS_39
3. CONFIG_ARM64_64K_PAGES/CONFIG_ARM64_VA_BITS_48
4. CONFIG_ARM64_64K_PAGES/CONFIG_ARM64_VA_BITS_42
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 | 66 ++++++++++++++++++++++++++----
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 ++++++++------------
6 files changed, 168 insertions(+), 68 deletions(-)
--
2.17.1
