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| author |   Nicholas Piggin <npiggin@gmail.com> | 2021-12-02 00:41:51 +1000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2021-12-09 22:40:24 +1100 |
| commit | c28573744b74eb6de19add503d6a986795c4c137 (patch) | |
| tree | a0e01828ce7e0e92ed571d5c0ed3ca471756c47b /arch/powerpc/Kconfig | |
| parent | powerpc/64s: Always define arch unmapped area calls (diff) | |
| download | linux-dev-c28573744b74eb6de19add503d6a986795c4c137.tar.xz linux-dev-c28573744b74eb6de19add503d6a986795c4c137.zip | |
powerpc/64s: Make hash MMU support configurable
This adds Kconfig selection which allows 64s hash MMU support to be
disabled. It can be disabled if radix support is enabled, the minimum
supported CPU type is POWER9 (or higher), and KVM is not selected.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20211201144153.2456614-17-npiggin@gmail.com
Diffstat (limited to 'arch/powerpc/Kconfig')
| -rw-r--r-- | arch/powerpc/Kconfig | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index e3e281a35327..2555563efff0 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -846,7 +846,7 @@ config FORCE_MAX_ZONEORDER config PPC_SUBPAGE_PROT bool "Support setting protections for 4k subpages (subpage_prot syscall)" default n - depends on PPC_BOOK3S_64 && PPC_64K_PAGES + depends on PPC_64S_HASH_MMU && PPC_64K_PAGES help This option adds support for system call to allow user programs to set access permissions (read/write, readonly, or no access) @@ -944,6 +944,7 @@ config PPC_MEM_KEYS prompt "PowerPC Memory Protection Keys" def_bool y depends on PPC_BOOK3S_64 + depends on PPC_64S_HASH_MMU select ARCH_USES_HIGH_VMA_FLAGS select ARCH_HAS_PKEYS help |