From patchwork Sat Feb 6 08:35:52 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lecopzer Chen X-Patchwork-Id: 12072009 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=-17.0 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,MIME_BASE64_TEXT,SPF_HELO_NONE,SPF_PASS, UNPARSEABLE_RELAY,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 80B86C433E0 for ; Sat, 6 Feb 2021 08:46:28 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 0D51764FCA for ; Sat, 6 Feb 2021 08:46:28 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0D51764FCA Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 7B2AB6B006C; Sat, 6 Feb 2021 03:46:27 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 78B906B006E; Sat, 6 Feb 2021 03:46:27 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 629EB6B0070; Sat, 6 Feb 2021 03:46:27 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0107.hostedemail.com [216.40.44.107]) by kanga.kvack.org (Postfix) with ESMTP id 4DFF06B006C for ; Sat, 6 Feb 2021 03:46:27 -0500 (EST) Received: from smtpin24.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 116E93634 for ; Sat, 6 Feb 2021 08:46:27 +0000 (UTC) X-FDA: 77787211614.24.glue22_510f938275ec Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin24.hostedemail.com (Postfix) with ESMTP id DF0E41A4A0 for ; Sat, 6 Feb 2021 08:46:26 +0000 (UTC) X-HE-Tag: glue22_510f938275ec X-Filterd-Recvd-Size: 4751 Received: from mailgw01.mediatek.com (mailgw01.mediatek.com [216.200.240.184]) by imf37.hostedemail.com (Postfix) with ESMTP for ; Sat, 6 Feb 2021 08:46:26 +0000 (UTC) X-UUID: cbe07f2d0ff34cd1b20425c108b71281-20210206 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=65Ivu8gApRNNi6Lwj0SA/pyl/Qy3p6z6fJGg1EtUvuY=; b=X6si4/YOcNbz0X1RY0JAv8jC8taUNSVgHxUMr2SZj9Kg/8iKDqL4m8U4F1Q3T66Np8WNcdwM6u9IJFsg+koyFV8sY9EUiA4jtRf+ZpaczVO/DB9eXDB2GU7MyUOhsr7fiSv8yW7IlY7TNfqyhoUM2N13AG2F4GA4N0auXLoWh3c=; X-UUID: cbe07f2d0ff34cd1b20425c108b71281-20210206 Received: from mtkcas66.mediatek.inc [(172.29.193.44)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 337137046; Sat, 06 Feb 2021 00:46:21 -0800 Received: from mtkmbs08n1.mediatek.inc (172.21.101.55) by MTKMBS62N2.mediatek.inc (172.29.193.42) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Sat, 6 Feb 2021 00:36:19 -0800 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkmbs08n1.mediatek.inc (172.21.101.55) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Sat, 6 Feb 2021 16:36:08 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Sat, 6 Feb 2021 16:36:08 +0800 From: Lecopzer Chen To: , , , , CC: , , , , , , , , , , , , , , , , , , Lecopzer Chen Subject: [PATCH v3 5/5] arm64: Kconfig: select KASAN_VMALLOC if KANSAN_GENERIC is enabled Date: Sat, 6 Feb 2021 16:35:52 +0800 Message-ID: <20210206083552.24394-6-lecopzer.chen@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20210206083552.24394-1-lecopzer.chen@mediatek.com> References: <20210206083552.24394-1-lecopzer.chen@mediatek.com> MIME-Version: 1.0 X-MTK: N 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: Before this patch, someone who wants to use VMAP_STACK when KASAN_GENERIC enabled must explicitly select KASAN_VMALLOC. From Will's suggestion [1]: > I would _really_ like to move to VMAP stack unconditionally, and > that would effectively force KASAN_VMALLOC to be set if KASAN is in use. Because VMAP_STACK now depends on either HW_TAGS or KASAN_VMALLOC if KASAN enabled, in order to make VMAP_STACK selected unconditionally, we bind KANSAN_GENERIC and KASAN_VMALLOC together. Note that SW_TAGS supports neither VMAP_STACK nor KASAN_VMALLOC now, so this is the first step to make VMAP_STACK selected unconditionally. Bind KANSAN_GENERIC and KASAN_VMALLOC together is supposed to cost more memory at runtime, thus the alternative is using SW_TAGS KASAN instead. [1]: https://lore.kernel.org/lkml/20210204150100.GE20815@willie-the-truck/ Suggested-by: Will Deacon Signed-off-by: Lecopzer Chen --- arch/arm64/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index a8f5a9171a85..9be6a57f6447 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -190,6 +190,7 @@ config ARM64 select IOMMU_DMA if IOMMU_SUPPORT select IRQ_DOMAIN select IRQ_FORCED_THREADING + select KASAN_VMALLOC if KASAN_GENERIC select MODULES_USE_ELF_RELA select NEED_DMA_MAP_STATE select NEED_SG_DMA_LENGTH