commit 61130e203dca3ba1f0c510eb12f7a4294e31a834
author Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Wed Dec 02 10:08:54 2020 +0530
committer Michael Ellerman <mpe@ellerman.id.au> Fri Dec 04 01:01:27 2020 +1100
tree a96718f275df5029d775f4c7bea540ef8e879d30
parent c91435d95c49f4053b05ba03b41dd7ed0fbd6c71

powerpc/book3s64/kup: Check max key supported before enabling kup

Don't enable KUEP/KUAP if we support less than or equal to 3 keys.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20201202043854.76406-1-aneesh.kumar@linux.ibm.com

arch/powerpc/mm/init-common.c

diff --git a/arch/powerpc/mm/init-common.c b/arch/powerpc/mm/init-common.c
index 8e0d792..afdebb9 100644
--- a/arch/powerpc/mm/init-common.c
+++ b/arch/powerpc/mm/init-common.c
@@ -28,8 +28,8 @@ EXPORT_SYMBOL_GPL(kernstart_addr);
 unsigned long kernstart_virt_addr __ro_after_init = KERNELBASE;
 EXPORT_SYMBOL_GPL(kernstart_virt_addr);
 
-static bool disable_kuep = !IS_ENABLED(CONFIG_PPC_KUEP);
-static bool disable_kuap = !IS_ENABLED(CONFIG_PPC_KUAP);
+bool disable_kuep = !IS_ENABLED(CONFIG_PPC_KUEP);
+bool disable_kuap = !IS_ENABLED(CONFIG_PPC_KUAP);
 
 static int __init parse_nosmep(char *p)
 {