From patchwork Wed Apr 27 09:59:14 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lecopzer Chen X-Patchwork-Id: 12828552 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 00A9CC433EF for ; Wed, 27 Apr 2022 10:02:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:CC :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=PH9tknf/WCgesJn6CRq//GBDBYPO7aMpTH6mDK2nkz8=; b=tbad9mMBNx0Llr PAcYZRK0ZjFjdIl45y7yvsBXx0PLHRgIGWV/LFaWpWRvDysU7zWNWX6FOqflCx5bYYudwuNS4J/Mk sFK9cmLA4ZivFdiUATNQy7P6OSWnh81EVtUEYHCXWTllwbvl7VYtRBegJ+/NzIOTXSvi0S6Bj8cDv nE1WqcheWVklByazwxLy1KRhrWqwgDWpwB6y3WvM0N8CRiiVXypxSXd1lxE/iyDzIISEcVE6PpI/k csQOXHU+qjDqf/HpeUvWCF69f5SpnbbPFBgQg1NuvKsw8wmVWP+snk5e92fKZHWegvXVQIKS09ZL3 VhfbU+uLUDZA2e8vqNSQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1njeUR-000rsB-Ei; Wed, 27 Apr 2022 10:01:43 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1njeUN-000rri-OL for linux-arm-kernel@lists.infradead.org; Wed, 27 Apr 2022 10:01:41 +0000 X-UUID: cf0ea6d7c0ae44a5b1bb03fc89f0f2ad-20220427 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.4, REQID:f8094a56-548e-4b3b-bfd8-c507408a3b59, OB:0, LO B:0,IP:0,URL:0,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,RULE:Release_Ham,ACTI ON:release,TS:0 X-CID-META: VersionHash:faefae9, CLOUDID:7570acc6-85ee-4ac1-ac05-bd3f1e72e732, C OID:IGNORED,Recheck:0,SF:nil,TC:nil,Content:0,EDM:-3,File:nil,QS:0,BEC:nil X-UUID: cf0ea6d7c0ae44a5b1bb03fc89f0f2ad-20220427 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 813413284; Wed, 27 Apr 2022 03:01:35 -0700 Received: from mtkexhb02.mediatek.inc (172.21.101.103) by MTKMBS62DR.mediatek.inc (172.29.94.18) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 27 Apr 2022 02:59:33 -0700 Received: from mtkcas10.mediatek.inc (172.21.101.39) by mtkexhb02.mediatek.inc (172.21.101.103) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 27 Apr 2022 17:59:32 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas10.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Wed, 27 Apr 2022 17:59:31 +0800 From: Lecopzer Chen To: , CC: , , , , , , , , , , , , , , , , , Subject: [PATCH v5 0/2] arm: kasan: support CONFIG_KASAN_VMALLOC Date: Wed, 27 Apr 2022 17:59:14 +0800 Message-ID: <20220427095916.17515-1-lecopzer.chen@mediatek.com> X-Mailer: git-send-email 2.18.0 MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220427_030139_828008_F2D34798 X-CRM114-Status: UNSURE ( 9.04 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Since the framework of KASAN_VMALLOC is well-developed, It's easy to support for ARM that simply not to map shadow of VMALLOC area on kasan_init. Since the virtual address of vmalloc for Arm is also between MODULE_VADDR and 0x100000000 (ZONE_HIGHMEM), which means the shadow address has already included between KASAN_SHADOW_START and KASAN_SHADOW_END. Thus we need to change nothing for memory map of Arm. This can fix ARM_MODULE_PLTS with KASan, support KASan for higmem and support CONFIG_VMAP_STACK with KASan. Test on 1. Qemu with memory 2G and vmalloc=500M for 3G/1G mapping. 2. Qemu with memory 2G and vmalloc=500M for 3G/1G mapping + LPAE. 3. Qemu with memory 2G and vmalloc=500M for 2G/2G mapping. v5: rebase on 5.18-rc4 v4: rebase on 5.17-rc8. remove simple doc for "arm: kasan: support CONFIG_KASAN_VMALLOC" rewrite the description for VMAP_STACK https://lore.kernel.org/lkml/20220315090157.27001-1-lecopzer.chen@mediatek.com/ v3: rebase on 5.17-rc5. Add simple doc for "arm: kasan: support CONFIG_KASAN_VMALLOC" Tweak commit message. https://lore.kernel.org/lkml/20220227134726.27584-1-lecopzer.chen@mediatek.com/ v2: rebase on 5.17-rc3 Lecopzer Chen (2): arm: kasan: support CONFIG_KASAN_VMALLOC arm: kconfig: fix MODULE_PLTS for KASAN with KASAN_VMALLOC arch/arm/Kconfig | 2 ++ arch/arm/mm/kasan_init.c | 6 +++++- 2 files changed, 7 insertions(+), 1 deletion(-)