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| author | Nicholas Piggin <npiggin@gmail.com> | 2020-07-03 04:19:58 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-07-21 17:01:25 +0300 |
| commit | 63396ada804c676e070bd1b8663046f18698ab27 (patch) | |
| tree | d6936337d63f8411c79ea4e65f73c5fee8761842 /arch/powerpc/Kconfig | |
| parent | 5c9fa16e8abd342ce04dc830c1ebb2a03abf6c05 (diff) | |
| download | linux-63396ada804c676e070bd1b8663046f18698ab27.tar.xz | |
powerpc/64s/hash: Disable subpage_prot syscall by default
The subpage_prot syscall was added for specialised system software
(Lx86) that has been discontinued for about 7 years, and is not thought
to be used elsewhere, so disable it by default.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200703011958.1166620-4-npiggin@gmail.com
Diffstat (limited to 'arch/powerpc/Kconfig')
| -rw-r--r-- | arch/powerpc/Kconfig | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 51abc59c3334..70adf69f8b1a 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -833,13 +833,16 @@ config FORCE_MAX_ZONEORDER this in mind when choosing a value for this option. config PPC_SUBPAGE_PROT - bool "Support setting protections for 4k subpages" + bool "Support setting protections for 4k subpages (subpage_prot syscall)" + default n depends on PPC_BOOK3S_64 && PPC_64K_PAGES help - This option adds support for a system call to allow user programs + 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. + config PPC_COPRO_BASE bool |