lkml.org 
[lkml]   [2018]   [Aug]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[RESEND PATCH v4 0/6] arm64/mm: Move swapper_pg_dir to rodata
Date
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

\
 
 \ /
  Last update: 2018-08-22 11:56    [W:0.085 / U:0.164 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site