[PATCH 00/10] Enhance /dev/mem to allow read/write of arbitrary physical addresses

Petr Tesarik
2011-06-17T08:38:25Z

This patch series enhances /dev/mem, so that read and write is possible
at any address. The patchset includes actual implementation for x86.

Petr Tesarik (10):
Return EOF on out-of-bounds read from /dev/mem
(un)xlate_dev_mem_ptr: use phys_addr_t for the @phys parameter
x86: translate highmem /dev/mem pointers
ia64: change xlate_dev_mem_ptr's argument to phys_addr_t
valid_phys_addr_range: use phys_addr_t for the @addr parameter
sh: change valid_phys_addr_range's @addr param to phys_addr_t
arm: change valid_phys_addr_range's @addr param to phys_addr_t
ia64: change valid_phys_addr_range's @addr param to phys_addr_t
x86: provide arch-specific valid_phys_addr_range()
Allow reading/writing all memory through /dev/mem

arch/arm/include/asm/io.h | 2 +-
arch/arm/mm/mmap.c | 2 +-
arch/ia64/include/asm/io.h | 2 +-
arch/ia64/include/asm/uaccess.h | 2 +-
arch/ia64/kernel/efi.c | 2 +-
arch/sh/include/asm/io.h | 2 +-
arch/sh/mm/mmap.c | 2 +-
arch/x86/include/asm/io.h | 15 +++++++++++++--
arch/x86/mm/ioremap.c | 24 ++++++++++++++++++------
drivers/char/mem.c | 14 ++++++++++----
10 files changed, 48 insertions(+), 19 deletions(-)

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1.7.3.4