From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.5 required=3.0 tests=DKIM_ADSP_CUSTOM_MED, DKIM_INVALID,DKIM_SIGNED,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 84CDACA9EAD for ; Sun, 20 Oct 2019 05:03:47 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 2541321928 for ; Sun, 20 Oct 2019 05:03:47 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="UwgOsRMT" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2541321928 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 65D598E0005; Sun, 20 Oct 2019 01:03:46 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 60D278E0003; Sun, 20 Oct 2019 01:03:46 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 4FBAC8E0005; Sun, 20 Oct 2019 01:03:46 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0009.hostedemail.com [216.40.44.9]) by kanga.kvack.org (Postfix) with ESMTP id 2F2518E0003 for ; Sun, 20 Oct 2019 01:03:46 -0400 (EDT) Received: from smtpin16.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with SMTP id AE8BE4DA8 for ; Sun, 20 Oct 2019 05:03:45 +0000 (UTC) X-FDA: 76062970410.16.offer57_781bd0e30bf00 X-HE-Tag: offer57_781bd0e30bf00 X-Filterd-Recvd-Size: 4654 Received: from mail-pg1-f194.google.com (mail-pg1-f194.google.com [209.85.215.194]) by imf02.hostedemail.com (Postfix) with ESMTP for ; Sun, 20 Oct 2019 05:03:45 +0000 (UTC) Received: by mail-pg1-f194.google.com with SMTP id l24so693835pgh.10 for ; Sat, 19 Oct 2019 22:03:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=ywjurEp+Cqg9Fe4cTYNr3xdPVL+AQ1tEWRef7MBO2GM=; b=UwgOsRMTJdf+LgBr0C20ejDPIAr9ydq6HPqifia3cf2sUDbcy29b0cQ7haAAoaxH9M o0gSiH8mSnEWttP3FaZxSqF3TEW+GF1zdaoQrV++F4z7IOT5nK2/s47etV0YlDbhxUL/ XJWssf9Q4WAoPZ3+IUx6qZBCzKlboTmJkUG6CzzL0WsJLPUqV7FI8a1XAC+Gkle+djPG vgvRCyMFONAJrtZWIOehm5TLiYtvPU2zaLC1ArRBGH39CrsmQZougjogh+YiBTIceHBH x5zjL0GPGoU13XhRj/s0xyuzA8/6ttP69rpJHIzSAR6Pgaqq58fnEZtidpd8KEuQhMCl kIIQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=ywjurEp+Cqg9Fe4cTYNr3xdPVL+AQ1tEWRef7MBO2GM=; b=WPF2Ug6j59eYd8/Fazhly74zH3jc5Yg2/Bj23GU8ecRcVP59z6rnMS7ERto3L7baEp vzz4HULQUZq6pvlM46r4PqhzddIb7r28wYLhI/D0KrEIvSJL+Dj6YZbmdkiQM60CHGap lgLeUHq05NU2aRGTH+6UESYlLeKB5qtpPaFhbhA84+SDslyTvmPQfy508eVhCjVoSTrE mohpsDIMDay2kQAtDWqzHrFe0qnsgqsTmq/PkCgkuTC/WbSc41+bNJJnwxMPPWUfzfOZ cOw7Cnb5TsuaqToTbOga2/mEf+TTVKyR7Z1iljtvd6OzdGGji74UxM1mC7NxFv8awTYA E+4w== X-Gm-Message-State: APjAAAXNoLJA8t+UzldVScvLppQ5VE7vlUNzajjFXIY/nOcPOwmNyOkT XW/jnPmRGeRGotLARmRdTtQ= X-Google-Smtp-Source: APXvYqzhq4Y6f40ITf9PsyqNcqlgvSoGUJy957fifRTQB2oiJKf62ter96xFc16NqqLRxmzBGJmp+A== X-Received: by 2002:a62:2501:: with SMTP id l1mr15797770pfl.148.1571547824131; Sat, 19 Oct 2019 22:03:44 -0700 (PDT) Received: from localhost.localdomain ([2405:204:120d:c531:1e8a:2547:3f6b:fbca]) by smtp.gmail.com with ESMTPSA id m5sm11238263pgt.15.2019.10.19.22.03.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 19 Oct 2019 22:03:43 -0700 (PDT) From: Shyam Saini To: kernel-hardening@lists.openwall.com Cc: iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Shyam Saini , Christoph Hellwig , Marek Szyprowski , Robin Murphy , Matthew Wilcox , Christopher Lameter , Kees Cook Subject: [PATCH V2] kernel: dma: contigous: Make CMA parameters __initdata/__initconst Date: Sun, 20 Oct 2019 10:33:22 +0530 Message-Id: <20191020050322.2634-1-mayhs11saini@gmail.com> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable 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: These parameters are only referenced by __init routine calls during early boot so they should be marked as __initdata and __initconst accordingly. Cc: Christoph Hellwig Cc: Marek Szyprowski Cc: Robin Murphy Cc: Matthew Wilcox Cc: Christopher Lameter Cc: Kees Cook Signed-off-by: Shyam Saini --- V1->V2: mark cma parameters as __initdata/__initconst instead of __ro_after_init. As these parameters are only used by __init calls and never used afterwards which contrast the __ro_after_init usage. --- kernel/dma/contiguous.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/kernel/dma/contiguous.c b/kernel/dma/contiguous.c index 69cfb4345388..10bfc8c44c54 100644 --- a/kernel/dma/contiguous.c +++ b/kernel/dma/contiguous.c @@ -42,10 +42,10 @@ struct cma *dma_contiguous_default_area; * Users, who want to set the size of global CMA area for their system * should use cma=3D kernel parameter. */ -static const phys_addr_t size_bytes =3D (phys_addr_t)CMA_SIZE_MBYTES * S= Z_1M; -static phys_addr_t size_cmdline =3D -1; -static phys_addr_t base_cmdline; -static phys_addr_t limit_cmdline; +static const phys_addr_t size_bytes __initconst =3D (phys_addr_t)CMA_SIZ= E_MBYTES * SZ_1M; +static phys_addr_t size_cmdline __initdata =3D -1; +static phys_addr_t base_cmdline __initdata; +static phys_addr_t limit_cmdline __initdata; =20 static int __init early_cma(char *p) { --=20 2.20.1