From 13dac4e31e75ce10b2fcaad4432a24dae6c955f6 Mon Sep 17 00:00:00 2001 From: Christophe Leroy Date: Tue, 19 Oct 2021 09:29:13 +0200 Subject: powerpc/8xx: Activate KUEP at all time On the 8xx, there is absolutely no runtime impact with KUEP. Protection against execution of user code in kernel mode is set up at boot time by configuring the groups with contain all user pages as having swapped protection rights, in extenso EX for user and NA for supervisor. Configure KUEP at startup and force selection of CONFIG_PPC_KUEP. Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/2129e86944323ffe9ed07fffbeafdfd2e363690a.1634627931.git.christophe.leroy@csgroup.eu --- arch/powerpc/platforms/Kconfig.cputype | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/powerpc/platforms') diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype index 7ca07df1c374..8b36608c7888 100644 --- a/arch/powerpc/platforms/Kconfig.cputype +++ b/arch/powerpc/platforms/Kconfig.cputype @@ -43,6 +43,7 @@ config PPC_8xx select ARCH_SUPPORTS_HUGETLBFS select FSL_SOC select PPC_HAVE_KUEP + select PPC_KUEP select PPC_HAVE_KUAP select HAVE_ARCH_VMAP_STACK select HUGETLBFS -- cgit v1.2.3