From 63396ada804c676e070bd1b8663046f18698ab27 Mon Sep 17 00:00:00 2001 From: Nicholas Piggin Date: Fri, 3 Jul 2020 11:19:58 +1000 Subject: 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 Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20200703011958.1166620-4-npiggin@gmail.com --- arch/powerpc/Kconfig | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'arch/powerpc/Kconfig') 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 -- cgit v1.2.3