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Subject[PATCH v3 0/2] arm: kasan: support CONFIG_KASAN_VMALLOC
Since the framework of KASAN_VMALLOC is well-developed,
It's easy to support for ARM that simply not to map shadow of VMALLOC
area on kasan_init.

Since the virtual address of vmalloc for Arm is also between
MODULE_VADDR and 0x100000000 (ZONE_HIGHMEM), which means the shadow
address has already included between KASAN_SHADOW_START and
Thus we need to change nothing for memory map of Arm.

This can fix ARM_MODULE_PLTS with KASan, support KASan for higmem
and provide the first step to support CONFIG_VMAP_STACK with Arm.

Test on
1. Qemu with memory 2G and vmalloc=500M for 3G/1G mapping.
2. Qemu with memory 2G and vmalloc=500M for 3G/1G mapping + LPAE.
3. Qemu with memory 2G and vmalloc=500M for 2G/2G mapping.

rebase on 5.17-rc5.
Add simple doc for "arm: kasan: support CONFIG_KASAN_VMALLOC"
Tweak commit message.

rebase on 5.17-rc3

Lecopzer Chen (2):
arm: kasan: support CONFIG_KASAN_VMALLOC
arm: kconfig: fix MODULE_PLTS for KASAN with KASAN_VMALLOC

arch/arm/Kconfig | 2 ++
arch/arm/include/asm/kasan_def.h | 11 ++++++++++-
arch/arm/mm/kasan_init.c | 6 +++++-
3 files changed, 17 insertions(+), 2 deletions(-)


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