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The Linux kernel configuration item CONFIG_X86_MSR
has multiple definitions:
arch/x86/Kconfig
The configuration item CONFIG_X86_MSR:
(none)
msr
, msr
, msr
This device gives privileged processes access to the x86 Model-Specific Registers (MSRs). It is a character device with major 202 and minors 0 to 31 for /dev/cpu/0/msr to /dev/cpu/31/msr. MSR accesses are directed to a specific CPU on multi-processor systems.
arch/x86_64/Kconfig
The configuration item CONFIG_X86_MSR:
(none)
msr
, msr
, msr
This device gives privileged processes access to the x86 Model-Specific Registers (MSRs). It is a character device with major 202 and minors 0 to 31 for /dev/cpu/0/msr to /dev/cpu/31/msr. MSR accesses are directed to a specific CPU on multi-processor systems.
arch/i386/Kconfig
The configuration item CONFIG_X86_MSR:
(none)
msr
, msr
, msr
This device gives privileged processes access to the x86 Model-Specific Registers (MSRs). It is a character device with major 202 and minors 0 to 31 for /dev/cpu/0/msr to /dev/cpu/31/msr. MSR accesses are directed to a specific CPU on multi-processor systems.
Raw data from LKDDb:
lkddb module msr CONFIG_X86_MSR : arch/i386/Kconfig : "/dev/cpu/*/msr - Model-specific register support" # in 2.5.45–2.5.75, 2.6.0–2.6.23
lkddb module msr CONFIG_X86_MSR : arch/x86/Kconfig : "/dev/cpu/*/msr - Model-specific register support" # in 2.6.24–2.6.39, 3.0–3.19, 4.0–4.20, 5.0–5.19, 6.0–6.10, 6.11-rc+HEAD
lkddb module msr CONFIG_X86_MSR : arch/x86_64/Kconfig : "/dev/cpu/*/msr - Model-specific register support" # in 2.5.45–2.5.75, 2.6.0–2.6.23
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Automatically generated (in year 2024). See also LKDDb sources on GitLab