Total number of pkeys calculation is off by 1. Fix it.
Cc: Florian Weimer <fwei...@redhat.com>
Cc: Michael Ellerman <m...@ellerman.id.au>
Cc: Thiago Jung Bauermann <bauer...@linux.ibm.com>
Fixes: 4fb158f65ac5 ("powerpc: track allocation status of all pkeys")
Cc: sta...@vger.kernel.org # v4.16+
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/powerpc/mm/pkeys.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/powerpc/mm/pkeys.c b/arch/powerpc/mm/pkeys.c
index cd0e623..7db56d8 100644
--- a/arch/powerpc/mm/pkeys.c
+++ b/arch/powerpc/mm/pkeys.c
@@ -92,7 +92,7 @@ int pkey_initialize(void)
* arch-neutral code.
*/
pkeys_total = min_t(int, pkeys_total,
- (ARCH_VM_PKEY_FLAGS >> VM_PKEY_SHIFT));
+ ((ARCH_VM_PKEY_FLAGS >> VM_PKEY_SHIFT)+1));
if (!pkey_mmu_enabled() || radix_enabled() || !pkeys_total)
static_branch_enable(&pkey_disabled);
--
1.7.1
