From patchwork Mon Aug 24 18:27:42 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Catalin Marinas X-Patchwork-Id: 11733959 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 92F7A1575 for ; Mon, 24 Aug 2020 18:28:35 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 66E642087D for ; Mon, 24 Aug 2020 18:28:35 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 66E642087D Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 3F3488D0001; Mon, 24 Aug 2020 14:28:33 -0400 (EDT) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id 37E7D8E0003; Mon, 24 Aug 2020 14:28:33 -0400 (EDT) X-Original-To: int-list-linux-mm@kvack.org X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 21C028D0005; Mon, 24 Aug 2020 14:28:33 -0400 (EDT) X-Original-To: linux-mm@kvack.org X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0007.hostedemail.com [216.40.44.7]) by kanga.kvack.org (Postfix) with ESMTP id 05E4F8D0001 for ; Mon, 24 Aug 2020 14:28:33 -0400 (EDT) Received: from smtpin03.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 8C9363628 for ; Mon, 24 Aug 2020 18:28:32 +0000 (UTC) X-FDA: 77186297664.03.burn52_1c0897027055 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin03.hostedemail.com (Postfix) with ESMTP id D998A28A4E9 for ; Mon, 24 Aug 2020 18:28:31 +0000 (UTC) X-Spam-Summary: 1,0,0,448e0e68dc1d0926,d41d8cd98f00b204,cmainas@kernel.org,,RULES_HIT:41:355:379:541:800:960:973:988:989:1260:1311:1314:1345:1359:1431:1437:1515:1534:1542:1711:1730:1747:1777:1792:2393:2559:2562:2895:2897:3138:3139:3140:3141:3142:3353:3865:3867:3868:3870:4605:5007:6261:6742:7576:7875:7903:10004:11026:11232:11658:11914:12043:12114:12297:12438:12517:12519:12555:12679:13180:13229:13894:14096:14181:14394:14721:21080:21230:21451:21627:21990:30012:30054,0,RBL:198.145.29.99:@kernel.org:.lbl8.mailshell.net-62.2.0.100 64.100.201.201;04ygcwxfjrhyqnq3d6ibseemfqc6jypx64i5bsgqck53kcf9petg75p6kxtiime.pbmbfqg55bc6ncderk7mjbc1uyaj4f79n6fkdypkgi3hsktopcqxfjr48rz54x4.c-lbl8.mailshell.net-223.238.255.100,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:fp,MSBL:0,DNSBL:neutral,Custom_rules:0:0:0,LFtime:23,LUA_SUMMARY:none X-HE-Tag: burn52_1c0897027055 X-Filterd-Recvd-Size: 3367 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf20.hostedemail.com (Postfix) with ESMTP for ; Mon, 24 Aug 2020 18:28:31 +0000 (UTC) Received: from localhost.localdomain (unknown [95.146.230.145]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 981AA2078D; Mon, 24 Aug 2020 18:28:28 +0000 (UTC) From: Catalin Marinas To: linux-arm-kernel@lists.infradead.org Cc: linux-mm@kvack.org, linux-arch@vger.kernel.org, Will Deacon , Dave P Martin , Vincenzo Frascino , Szabolcs Nagy , Kevin Brodsky , Andrey Konovalov , Peter Collingbourne , Andrew Morton , Kevin Brodsky Subject: [PATCH v8 12/28] mm: Introduce arch_calc_vm_flag_bits() Date: Mon, 24 Aug 2020 19:27:42 +0100 Message-Id: <20200824182758.27267-13-catalin.marinas@arm.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200824182758.27267-1-catalin.marinas@arm.com> References: <20200824182758.27267-1-catalin.marinas@arm.com> MIME-Version: 1.0 X-Rspamd-Queue-Id: D998A28A4E9 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam04 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: Kevin Brodsky Similarly to arch_calc_vm_prot_bits(), introduce a dummy arch_calc_vm_flag_bits() invoked from calc_vm_flag_bits(). This macro can be overridden by architectures to insert specific VM_* flags derived from the mmap() MAP_* flags. Signed-off-by: Kevin Brodsky Signed-off-by: Catalin Marinas Cc: Andrew Morton --- Notes: v6: - Added comment on where the arch code should define overriding arch_* macros (asm/mman.h). v2: - Updated the comment above arch_calc_vm_prot_bits(). - Changed author since this patch had already been posted (internally). include/linux/mman.h | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/include/linux/mman.h b/include/linux/mman.h index 6f34c33075f9..6fa15c9b12af 100644 --- a/include/linux/mman.h +++ b/include/linux/mman.h @@ -78,13 +78,18 @@ static inline void vm_unacct_memory(long pages) } /* - * Allow architectures to handle additional protection bits + * Allow architectures to handle additional protection and flag bits. The + * overriding macros must be defined in the arch-specific asm/mman.h file. */ #ifndef arch_calc_vm_prot_bits #define arch_calc_vm_prot_bits(prot, pkey) 0 #endif +#ifndef arch_calc_vm_flag_bits +#define arch_calc_vm_flag_bits(flags) 0 +#endif + #ifndef arch_vm_get_page_prot #define arch_vm_get_page_prot(vm_flags) __pgprot(0) #endif @@ -135,7 +140,8 @@ calc_vm_flag_bits(unsigned long flags) return _calc_vm_trans(flags, MAP_GROWSDOWN, VM_GROWSDOWN ) | _calc_vm_trans(flags, MAP_DENYWRITE, VM_DENYWRITE ) | _calc_vm_trans(flags, MAP_LOCKED, VM_LOCKED ) | - _calc_vm_trans(flags, MAP_SYNC, VM_SYNC ); + _calc_vm_trans(flags, MAP_SYNC, VM_SYNC ) | + arch_calc_vm_flag_bits(flags); } unsigned long vm_commit_limit(void);