powerpc/book3s64/hash/kuep: Enable KUEP on hash
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Reviewed-by: Sandipan Das <sandipan@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20201127044424.40686-21-aneesh.kumar@linux.ibm.com
diff --git a/arch/powerpc/mm/book3s64/pkeys.c b/arch/powerpc/mm/book3s64/pkeys.c
index 9f01c86..4a3aedd 100644
--- a/arch/powerpc/mm/book3s64/pkeys.c
+++ b/arch/powerpc/mm/book3s64/pkeys.c
@@ -244,7 +244,12 @@ void __init pkey_early_init_devtree(void)
#ifdef CONFIG_PPC_KUEP
void __init setup_kuep(bool disabled)
{
- if (disabled || !early_radix_enabled())
+ if (disabled)
+ return;
+ /*
+ * On hash if PKEY feature is not enabled, disable KUAP too.
+ */
+ if (!early_radix_enabled() && !early_mmu_has_feature(MMU_FTR_PKEY))
return;
if (smp_processor_id() == boot_cpuid) {
