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 6D1EBC433EF for ; Tue, 15 Mar 2022 09:02:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346323AbiCOJD0 (ORCPT ); Tue, 15 Mar 2022 05:03:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36964 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238477AbiCOJDY (ORCPT ); Tue, 15 Mar 2022 05:03:24 -0400 Received: from mailgw02.mediatek.com (unknown [210.61.82.184]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4AC944D9D6 for ; Tue, 15 Mar 2022 02:02:09 -0700 (PDT) X-UUID: 54457aaeeeae4d3aad0dffd452a40eb0-20220315 X-UUID: 54457aaeeeae4d3aad0dffd452a40eb0-20220315 Received: from mtkcas10.mediatek.inc [(172.21.101.39)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 914556803; Tue, 15 Mar 2022 17:02:04 +0800 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkmbs07n1.mediatek.inc (172.21.101.16) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 15 Mar 2022 17:02:02 +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; Tue, 15 Mar 2022 17:02:02 +0800 From: Lecopzer Chen To: , CC: , , , , , , , , , , , , , , , , , Subject: [PATCH v4 0/2] arm: kasan: support CONFIG_KASAN_VMALLOC Date: Tue, 15 Mar 2022 17:01:55 +0800 Message-ID: <20220315090157.27001-1-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. v4: rebase on 5.17-rc8. remove simple doc for "arm: kasan: support CONFIG_KASAN_VMALLOC" rewrite the description for VMAP_STACK 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