From patchwork Tue Mar 15 09:01:55 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lecopzer Chen X-Patchwork-Id: 12781206 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 9E685C433F5 for ; Tue, 15 Mar 2022 09:13:54 +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=7tFjqAcZf3fmqiNAOg0iQd9M0yQohtYazE7TkRqCN+Q=; b=VWco3rcQlDEANr 5A/Ao8HzatXL164V8Cz3Us38tULtd+1/KPTTeHRx/37amsebtNJbpaopWgXybEPP7S54VZD6LQKBO 4SuzqmcdFxRz8HKleKnFItbqk2YL92r8V+dyT09CslTgnN88E7SJatMTgY9AxEX64JclokqPDHEtC 87ltmGQUnkXGEpj/ckqfG4d1CJ0tuuBSxXK8JUmy3+fUYqmgPl9KlI24M1LClyDK/O6nq9t57nyNR LqpR/csPYuuzzX4yeF2yNLiKK7JHAth2tprjEyrYDsn1x0Zsi5wbyONH0w3+mmhy4KOdsuMRoPdIp ++m8X0JjvqE1s6DEeamA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nU3EO-008Sjo-Jj; Tue, 15 Mar 2022 09:12:40 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nU3Dv-008SUe-P0 for linux-arm-kernel@lists.infradead.org; Tue, 15 Mar 2022 09:12:13 +0000 X-UUID: abe425ac85db436e85dcbcf234be5daf-20220315 X-UUID: abe425ac85db436e85dcbcf234be5daf-20220315 Received: from mtkcas66.mediatek.inc [(172.29.193.44)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 1383370522; Tue, 15 Mar 2022 02:12:05 -0700 Received: from mtkmbs07n1.mediatek.inc (172.21.101.16) by MTKMBS62N1.mediatek.inc (172.29.193.41) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 15 Mar 2022 02:02:04 -0700 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 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220315_021211_839342_90A27FD6 X-CRM114-Status: UNSURE ( 9.11 ) 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. 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(-)