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 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 B0F90CA0EFC for ; Wed, 20 Aug 2025 05:45:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-type:MIME-Version:References:In-Reply-To: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:List-Owner; bh=tSX6B0M/ECg+25VESJMFTz+rvOMGoiNHgeaxc9XIWxk=; b=rwt3BBCV7wSoTB9dWyvDBFohGe DpQMIRBQjgIWBujhnmRu8C74Gqj8fgy092tUO40Dff2nCBrb7EaYs5R8zbJCz23Sb5mRYX9sFJhv8 Ui2zpE6bjyAMZ5KOlV8ds6HsfswPzs88do9LgDZLjeSlzRVmyhVMb7iumxTi0/rGWaRNKAj7S5r1T R7j0SzhoLYWBSqLihlso7rEPEX3OKwA4w1n4Zi4gQt8EEgTT+gSxNAud4SCTCAy5KD2CLTmJvKADg RrGR7bzRf6Lry1vGZrgWltT3T1HyE6dF2K8a2jYJ0M911/o1r29oNmH85lqkr6f+H1X+c2hXBN7a5 zLtKGr/w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1uobde-0000000CRg6-0e5M; Wed, 20 Aug 2025 05:45:34 +0000 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1uobUw-0000000CQIQ-38ix for kexec@lists.infradead.org; Wed, 20 Aug 2025 05:36:35 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1755668193; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=tSX6B0M/ECg+25VESJMFTz+rvOMGoiNHgeaxc9XIWxk=; b=VPbJC8Jh9IhbYBGdxZKwU8FBEIL8yxBDDLalb0uHOYEIoT3MuJ+YaFOTx4jRzzJ0zlwIrd JSwJHv3XVFzBbt8d3SipR4F5LvcARUaXQYwyw2JZXW15EgepMlcDkhUziIMqBn0gpJd3Hh lBgKIn7NBHUsQdgTNiZrU21zgXIoYjA= Received: from mx-prod-mc-06.mail-002.prod.us-west-2.aws.redhat.com (ec2-35-165-154-97.us-west-2.compute.amazonaws.com [35.165.154.97]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-92-GaD0GWmKPR2v39dZ-bWOUA-1; Wed, 20 Aug 2025 01:36:27 -0400 X-MC-Unique: GaD0GWmKPR2v39dZ-bWOUA-1 X-Mimecast-MFC-AGG-ID: GaD0GWmKPR2v39dZ-bWOUA_1755668184 Received: from mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.12]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-06.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id A6107180047F; Wed, 20 Aug 2025 05:36:24 +0000 (UTC) Received: from MiWiFi-R3L-srv.redhat.com (unknown [10.72.112.99]) by mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id BF69119560B0; Wed, 20 Aug 2025 05:36:16 +0000 (UTC) From: Baoquan He To: linux-mm@kvack.org Cc: ryabinin.a.a@gmail.com, andreyknvl@gmail.com, glider@google.com, dvyukov@google.com, vincenzo.frascino@arm.com, akpm@linux-foundation.org, kasan-dev@googlegroups.com, linux-kernel@vger.kernel.org, kexec@lists.infradead.org, sj@kernel.org, lorenzo.stoakes@oracle.com, elver@google.com, snovitoll@gmail.com, christophe.leroy@csgroup.eu, Baoquan He , linux-riscv@lists.infradead.org Subject: [PATCH v3 08/12] arch/riscv: don't initialize kasan if it's disabled Date: Wed, 20 Aug 2025 13:34:55 +0800 Message-ID: <20250820053459.164825-9-bhe@redhat.com> In-Reply-To: <20250820053459.164825-1-bhe@redhat.com> References: <20250820053459.164825-1-bhe@redhat.com> MIME-Version: 1.0 Content-type: text/plain Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250819_223634_850367_DB388C86 X-CRM114-Status: UNSURE ( 8.60 ) X-CRM114-Notice: Please train this message. X-BeenThere: kexec@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "kexec" Errors-To: kexec-bounces+kexec=archiver.kernel.org@lists.infradead.org And also add code to enable kasan_flag_enabled, this is for later usage. Signed-off-by: Baoquan He Cc: linux-riscv@lists.infradead.org --- arch/riscv/mm/kasan_init.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/riscv/mm/kasan_init.c b/arch/riscv/mm/kasan_init.c index 41c635d6aca4..ac3ac227c765 100644 --- a/arch/riscv/mm/kasan_init.c +++ b/arch/riscv/mm/kasan_init.c @@ -485,6 +485,9 @@ void __init kasan_init(void) phys_addr_t p_start, p_end; u64 i; + if (kasan_arg_disabled) + return; + create_tmp_mapping(); csr_write(CSR_SATP, PFN_DOWN(__pa(tmp_pg_dir)) | satp_mode); @@ -531,6 +534,9 @@ void __init kasan_init(void) memset(kasan_early_shadow_page, KASAN_SHADOW_INIT, PAGE_SIZE); init_task.kasan_depth = 0; + /* KASAN is now initialized, enable it. */ + static_branch_enable(&kasan_flag_enabled); + csr_write(CSR_SATP, PFN_DOWN(__pa(swapper_pg_dir)) | satp_mode); local_flush_tlb_all(); } -- 2.41.0