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CONFIG_PHYS_64BIT: Large physical address support

General informations

The Linux kernel configuration item CONFIG_PHYS_64BIT has multiple definitions:

Large physical address support found in arch/powerpc/platforms/Kconfig.cputype

The configuration item CONFIG_PHYS_64BIT:

Help text

This option enables kernel support for larger than 32-bit physical addresses. This feature may not be available on all cores.

If you have more than 3.5GB of RAM or so, you also need to enable SWIOTLB under Kernel Options for this to work. The actual number is platform-dependent.

If in doubt, say N here.

found in arch/ppc/Kconfig

The configuration item CONFIG_PHYS_64BIT:

Help text

This option enables kernel support for larger than 32-bit physical addresses. This features is not be available on all e500 cores.

If in doubt, say N here.

Large physical address support found in arch/ppc/Kconfig

The configuration item CONFIG_PHYS_64BIT:

Help text

This option enables kernel support for larger than 32-bit physical addresses. This features is not be available on all e500 cores.

If in doubt, say N here.

Large physical address support found in arch/powerpc/Kconfig

The configuration item CONFIG_PHYS_64BIT:

Help text

This option enables kernel support for larger than 32-bit physical addresses. This features is not be available on all e500 cores.

If in doubt, say N here.

Hardware

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