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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1E0FDC433EF for ; Wed, 27 Apr 2022 10:41:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229838AbiD0Ko5 (ORCPT ); Wed, 27 Apr 2022 06:44:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48068 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229776AbiD0Kon (ORCPT ); Wed, 27 Apr 2022 06:44:43 -0400 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6F2CC49AB47 for ; Wed, 27 Apr 2022 03:25:40 -0700 (PDT) X-UUID: eefbb75b7eb649d4803ab8ec1db8a0af-20220427 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.4,REQID:89c744a2-ae14-4fa2-8bfd-c801bfa8a180,OB:0,LO B:0,IP:0,URL:0,TC:0,Content:0,EDM:0,RT:0,SF:95,FILE:0,RULE:Release_Ham,ACT ION:release,TS:95 X-CID-INFO: VERSION:1.1.4,REQID:89c744a2-ae14-4fa2-8bfd-c801bfa8a180,OB:0,LOB: 0,IP:0,URL:0,TC:0,Content:0,EDM:0,RT:0,SF:95,FILE:0,RULE:Spam_GS981B3D,ACT ION:quarantine,TS:95 X-CID-META: VersionHash:faefae9,CLOUDID:6d5bacc6-85ee-4ac1-ac05-bd3f1e72e732,C OID:febf3ac4902a,Recheck:0,SF:28|17|19|48,TC:nil,Content:0,EDM:-3,File:nil ,QS:0,BEC:nil X-UUID: eefbb75b7eb649d4803ab8ec1db8a0af-20220427 Received: from mtkmbs10n2.mediatek.inc [(172.21.101.183)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 1096876898; Wed, 27 Apr 2022 17:59:33 +0800 Received: from mtkexhb02.mediatek.inc (172.21.101.103) by mtkmbs10n2.mediatek.inc (172.21.101.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.3; Wed, 27 Apr 2022 17:59:32 +0800 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 Content-Type: text/plain X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.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(-) -- 2.18.0