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kernel: add KERNEL_DEVMEM and KERNEL_DEVKMEM 

These options are needed to create /dev/mem or /dev/kmem .
/dev/mem is needed by the io tool to access raw hardware memory, which
is helpful when debugging and developing drivers.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Acked-by: John Crispin <john@phrozen.org>
owl
Hauke Mehrtens 2016-12-17 15:00:59 +01:00
parent 236bf83bb6
commit 6e7fdf07b7
1 changed files with 14 additions and 0 deletions
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14
config/Config-kernel.in
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@ -745,3 +745,17 @@ menu "Filesystem ACL and attr support options"
default y if USE_FS_ACL_ATTR
endmenu
config KERNEL_DEVMEM
bool "/dev/mem virtual device support"
help
Say Y here if you want to support the /dev/mem device.
The /dev/mem device is used to access areas of physical
memory.
config KERNEL_DEVKMEM
bool "/dev/kmem virtual device support"
help
Say Y here if you want to support the /dev/kmem device. The
/dev/kmem device is rarely used, but can be used for certain
kind of kernel debugging operations.