lkml.org 
[lkml]   [2020]   [Jan]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[PATCH 0/2] riscv: mm: add support for CONFIG_DEBUG_VIRTUAL
Date
This patch implements CONFIG_DEBUG_VIRTUAL to do additional checks on
virt_to_phys and __pa_symbol calls. virt_to_phys used for linear mapping
check, and __pa_symbol used for kernel symbol check. In current RISC-V,
kernel image maps to linear mapping area. If CONFIG_DEBUG_VIRTUAL is
disable, these two functions calculate the offset on the address feded
directly without any checks.

Zong Li (2):
riscv: mm: add support for CONFIG_DEBUG_VIRTUAL
riscv: mm: use __pa_symbol for kernel symbols

arch/riscv/Kconfig | 1 +
arch/riscv/include/asm/page.h | 16 +++++++++++++--
arch/riscv/mm/Makefile | 2 ++
arch/riscv/mm/init.c | 12 ++++++------
arch/riscv/mm/physaddr.c | 37 +++++++++++++++++++++++++++++++++++
5 files changed, 60 insertions(+), 8 deletions(-)
create mode 100644 arch/riscv/mm/physaddr.c

--
2.24.1

\
 
 \ /
  Last update: 2020-01-02 04:13    [W:0.063 / U:20.904 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site