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| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2021-10-19 09:29:13 +0200 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-12-09 22:41:17 +1100 |
| commit | 13dac4e31e75ce10b2fcaad4432a24dae6c955f6 (patch) | |
| tree | 9fa4157708c5765962619f71fce6f866dfd68abd /arch/powerpc/platforms | |
| parent | 6c1fa60d368e6b752e1612eae9bb0970e85392b2 (diff) | |
| download | linux-stable-13dac4e31e75ce10b2fcaad4432a24dae6c955f6.tar.gz linux-stable-13dac4e31e75ce10b2fcaad4432a24dae6c955f6.tar.bz2 linux-stable-13dac4e31e75ce10b2fcaad4432a24dae6c955f6.zip | |
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 <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/2129e86944323ffe9ed07fffbeafdfd2e363690a.1634627931.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/powerpc/platforms')
| -rw-r--r-- | arch/powerpc/platforms/Kconfig.cputype | 1 |
1 files changed, 1 insertions, 0 deletions
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 |