From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qt0-x22a.google.com (mail-qt0-x22a.google.com [IPv6:2607:f8b0:400d:c0d::22a]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 410FdK40pfzF1SJ for ; Tue, 5 Jun 2018 12:10:29 +1000 (AEST) Received: by mail-qt0-x22a.google.com with SMTP id i18-v6so817034qtp.12 for ; Mon, 04 Jun 2018 19:10:29 -0700 (PDT) Sender: Ram Pai From: Ram Pai To: mpe@ellerman.id.au Cc: linuxppc-dev@lists.ozlabs.org, dave.hansen@intel.com, aneesh.kumar@linux.vnet.ibm.com, bsingharora@gmail.com, hbabu@us.ibm.com, mhocko@kernel.org, bauerman@linux.vnet.ibm.com, linuxram@us.ibm.com, Ulrich.Weigand@de.ibm.com, fweimer@redhat.com, luto@kernel.org Subject: [PATCH 3/5] powerpc/pkeys: fix calculation of total pkeys. Date: Mon, 4 Jun 2018 19:09:52 -0700 Message-Id: <1528164594-23823-4-git-send-email-linuxram@us.ibm.com> In-Reply-To: <1528164594-23823-1-git-send-email-linuxram@us.ibm.com> References: <1528164594-23823-1-git-send-email-linuxram@us.ibm.com> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Total number of pkeys calculation is off by 1. Fix it. CC: Florian Weimer CC: Michael Ellerman CC: Thiago Jung Bauermann Signed-off-by: Ram Pai --- 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 6fc56f4..90ab793 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