linux-kernel - [PATCH 0/2] arm: kasan: support CONFIG_KASAN

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Message-ID: <20220118094450.7730-1-lecopzer.chen@mediatek.com>
Date:   Tue, 18 Jan 2022 17:44:48 +0800
From:   Lecopzer Chen <lecopzer.chen@...iatek.com>
To:     <linux-kernel@...r.kernel.org>
CC:     Russell King <linux@...linux.org.uk>,
        Andrey Ryabinin <ryabinin.a.a@...il.com>,
        Alexander Potapenko <glider@...gle.com>,
        "Andrey Konovalov" <andreyknvl@...il.com>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Arnd Bergmann <arnd@...db.de>,
        Linus Walleij <linus.walleij@...aro.org>,
        <rmk+kernel@...linux.org.uk>,
        "Geert Uytterhoeven" <geert+renesas@...der.be>,
        Ard Biesheuvel <ardb@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Anshuman Khandual <anshuman.khandual@....com>,
        Lukas Bulwahn <lukas.bulwahn@...il.com>,
        Masahiro Yamada <masahiroy@...nel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <kasan-dev@...glegroups.com>, <yj.chiang@...iatek.com>,
        Lecopzer Chen <lecopzer@...il.com>
Subject: [PATCH 0/2] arm: kasan: support CONFIG_KASAN_VMALLOC

From: Lecopzer Chen <lecopzer@...il.com>

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.

This can fix ARM_MODULE_PLTS with KASAN and provide first step
to support CONFIG_VMAP_STACK in ARM.
    

Patch base on v5.16

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.


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/mm/kasan_init.c | 6 +++++-
 2 files changed, 7 insertions(+), 1 deletion(-)

-- 
2.25.1