From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0a-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3vR2Wm20c0zDqNr for ; Sun, 19 Feb 2017 21:08:04 +1100 (AEDT) Received: from pps.filterd (m0098417.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.20/8.16.0.20) with SMTP id v1JA3dBX104317 for ; Sun, 19 Feb 2017 05:08:02 -0500 Received: from e35.co.us.ibm.com (e35.co.us.ibm.com [32.97.110.153]) by mx0a-001b2d01.pphosted.com with ESMTP id 28q6rev1c5-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Sun, 19 Feb 2017 05:08:01 -0500 Received: from localhost by e35.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Sun, 19 Feb 2017 03:08:01 -0700 From: "Aneesh Kumar K.V" To: benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au Cc: linuxppc-dev@lists.ozlabs.org, "Aneesh Kumar K.V" Subject: [PATCH V3 06/10] powerpc/mm: Remove redundant TASK_SIZE_USER64 checks Date: Sun, 19 Feb 2017 15:37:13 +0530 In-Reply-To: <1487498837-12017-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com> References: <1487498837-12017-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com> Message-Id: <1487498837-12017-7-git-send-email-aneesh.kumar@linux.vnet.ibm.com> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , The check against VSID range is implied when we check task size against hash and radix pgtable range[1], because we make sure page table range cannot exceed vsid range. [1] BUILD_BUG_ON(TASK_SIZE_USER64 > H_PGTABLE_RANGE); BUILD_BUG_ON(TASK_SIZE_USER64 > RADIX_PGTABLE_RANGE); The check for smaller task size is also removed here, because the follow up patch will support a tasksize smaller than pgtable range. Signed-off-by: Aneesh Kumar K.V --- arch/powerpc/mm/init_64.c | 4 ---- arch/powerpc/mm/pgtable_64.c | 5 ----- 2 files changed, 9 deletions(-) diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c index 93abf8a9813d..f3e856e6ee23 100644 --- a/arch/powerpc/mm/init_64.c +++ b/arch/powerpc/mm/init_64.c @@ -69,10 +69,6 @@ #if H_PGTABLE_RANGE > USER_VSID_RANGE #warning Limited user VSID range means pagetable space is wasted #endif - -#if (TASK_SIZE_USER64 < H_PGTABLE_RANGE) && (TASK_SIZE_USER64 < USER_VSID_RANGE) -#warning TASK_SIZE is smaller than it needs to be. -#endif #endif /* CONFIG_PPC_STD_MMU_64 */ phys_addr_t memstart_addr = ~0; diff --git a/arch/powerpc/mm/pgtable_64.c b/arch/powerpc/mm/pgtable_64.c index 8bca7f58afc4..06e23e0b1b81 100644 --- a/arch/powerpc/mm/pgtable_64.c +++ b/arch/powerpc/mm/pgtable_64.c @@ -55,11 +55,6 @@ #include "mmu_decl.h" -#ifdef CONFIG_PPC_STD_MMU_64 -#if TASK_SIZE_USER64 > (1UL << (ESID_BITS + SID_SHIFT)) -#error TASK_SIZE_USER64 exceeds user VSID range -#endif -#endif #ifdef CONFIG_PPC_BOOK3S_64 /* -- 2.7.4