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The Linux kernel configuration item CONFIG_PPC_SUBPAGE_PROT
has multiple definitions:
arch/powerpc/Kconfig
The configuration item CONFIG_PPC_SUBPAGE_PROT:
CONFIG_PPC_64S_HASH_MMU && CONFIG_PPC_64K_PAGES
This option adds support for system call to allow user programs to set access permissions (read/write, readonly, or no access) on the 4k subpages of each 64k page.
If unsure, say N here.
arch/powerpc/Kconfig
The configuration item CONFIG_PPC_SUBPAGE_PROT:
CONFIG_PPC_BOOK3S_64 && CONFIG_PPC_64K_PAGES
This option adds support for a system call to allow user programs to set access permissions (read/write, readonly, or no access) on the 4k subpages of each 64k page.
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