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Date: Tue, 24 Mar 2020 15:30:45 +0800
From: Zong Li <zong.li@...ive.com>
To: palmer@...belt.com, paul.walmsley@...ive.com, alex@...ti.fr,
linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc: Zong Li <zong.li@...ive.com>
Subject: [PATCH RFC 0/8] Support KASLR for RISC-V
This patch series implement KASLR for RISC-V. It copies kernel image to
a proper and random place, and make all harts go to the new destination.
This patch depends on the patch 'riscv: Introduce CONFIG_RELOCATABLE',
but given a small change by making PAGE_OFFSET be constant, so all the
memory could be available after moving kernel physical address. This
patch also depends on 'Support strict kernel memory permissions for security'.
Zong Li (8):
riscv/kaslr: add interface to get kaslr offset
riscv/kaslr: introduce functions to clear page table
riscv/kaslr: support KASLR infrastructure
riscv/kaslr: randomize the kernel image offset
riscv/kaslr: support sparse memory model
riscv/kaslr: clear the original kernel image
riscv/kaslr: add cmdline support to disable KASLR
riscv/kaslr: dump out kernel offset information on panic
arch/riscv/Kconfig | 15 ++
arch/riscv/include/asm/kaslr.h | 12 +
arch/riscv/include/asm/page.h | 5 +
arch/riscv/kernel/Makefile | 2 +
arch/riscv/kernel/head.S | 39 +++
arch/riscv/kernel/kaslr.c | 442 +++++++++++++++++++++++++++++++++
arch/riscv/kernel/setup.c | 23 ++
arch/riscv/mm/init.c | 115 ++++++++-
8 files changed, 651 insertions(+), 2 deletions(-)
create mode 100644 arch/riscv/include/asm/kaslr.h
create mode 100644 arch/riscv/kernel/kaslr.c
--
2.25.1
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