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 X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E9726CA9ECB for ; Thu, 31 Oct 2019 13:59:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BFCA12087E for ; Thu, 31 Oct 2019 13:59:43 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="Kqyg+WHa" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727826AbfJaN7m (ORCPT ); Thu, 31 Oct 2019 09:59:42 -0400 Received: from mail-pg1-f194.google.com ([209.85.215.194]:39498 "EHLO mail-pg1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727807AbfJaN7l (ORCPT ); Thu, 31 Oct 2019 09:59:41 -0400 Received: by mail-pg1-f194.google.com with SMTP id p12so4112988pgn.6 for ; Thu, 31 Oct 2019 06:59:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=4N2qK3I0XAixg8Gqykp67y7zePqj/gx/cyRF/j/7A/0=; b=Kqyg+WHaKi7N2HGDe3jjbqRjhP0iAIF7fq3SfVbK5PtQpNxwCzGGALgWry/cHUWeIB Ed0DVYCEJKhlq01DA5MVDfbQl0R4986RtaS1g/yVbsM7PuC4BXoM/WiZO1VPjDWUG4lm VSBPNH0k4olFhH5ZF9miOX0OaLKjUX74UUz2iu73j6DnLHQUK17XJRqdhFmVJYStt7hw 8ZIQdpp1KLjv2Rg8yCBJJ5dxmRYLFONe8To/Q9lqy5eTES0B2Du52/fuKkzDaXFE0xF5 KJuqpNPoA5AjOnlVVffpYPzho17l0zkMbMTKWwMDPgOKyrcNZxLJkPHiIl9oBiJSrz6I 1Qsg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=4N2qK3I0XAixg8Gqykp67y7zePqj/gx/cyRF/j/7A/0=; b=Cu3Z2Js3S/814j0uNTpFnDe/PyRIqYvX1h0unK8TvdgS+3qtHha6IoGYEGeyfYFfGe f3gMQbf8UBC0Bb57VJ+vpcjlHDe5pgCBDwHojj3BnbeNyXoEx12I84qwb4y5So4/ytdS 4+gUCr+r3XrEf9VX58WMhTEUDj+oPK+I8UgojUizf8zC3+tqO1X33/PLvwCd7s236vRH dkXHCV82ss0FnIPBUmgK/2yuoTIiO/KX1+bfwoBdKlmicGeHL/y6YUItOyP2EAtx3xlw 6RdR2HGUV2M8s0WF7cxjnah1MUakoNWnphTBiTK238vv6cfn3oWYkTybvWavYYg2Gp50 tBHw== X-Gm-Message-State: APjAAAV3dx1eMoNzBXIpP62sHyB6mL0L9IxvyNB2mspqzKg5T93IBfi+ ZNonb1MWMnYS44jHWqe4hFuFPqA1Nns= X-Google-Smtp-Source: APXvYqz+zWH54kS4jRD/vTLg3fa52z3BsIVW3U6c2hQ4Fj1BhwZJZIUhAgMu0evVEV8d+Td5DsY8qw== X-Received: by 2002:a17:90a:fa02:: with SMTP id cm2mr7816999pjb.129.1572530380071; Thu, 31 Oct 2019 06:59:40 -0700 (PDT) Received: from localhost.localdomain ([117.252.69.143]) by smtp.gmail.com with ESMTPSA id i16sm3522441pfa.184.2019.10.31.06.59.32 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 31 Oct 2019 06:59:39 -0700 (PDT) From: Sumit Garg To: jens.wiklander@linaro.org, jarkko.sakkinen@linux.intel.com, dhowells@redhat.com Cc: corbet@lwn.net, jejb@linux.ibm.com, zohar@linux.ibm.com, jmorris@namei.org, serge@hallyn.com, casey@schaufler-ca.com, ard.biesheuvel@linaro.org, daniel.thompson@linaro.org, stuart.yoder@arm.com, janne.karhunen@gmail.com, keyrings@vger.kernel.org, linux-integrity@vger.kernel.org, linux-security-module@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, tee-dev@lists.linaro.org, Sumit Garg Subject: [Patch v3 1/7] tee: optee: allow kernel pages to register as shm Date: Thu, 31 Oct 2019 19:28:37 +0530 Message-Id: <1572530323-14802-2-git-send-email-sumit.garg@linaro.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1572530323-14802-1-git-send-email-sumit.garg@linaro.org> References: <1572530323-14802-1-git-send-email-sumit.garg@linaro.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Kernel pages are marked as normal type memory only so allow kernel pages to be registered as shared memory with OP-TEE. Signed-off-by: Sumit Garg Reviewed-by: Jarkko Sakkinen Reviewed-by: Jens Wiklander --- drivers/tee/optee/call.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/tee/optee/call.c b/drivers/tee/optee/call.c index 13b0269..cf2367b 100644 --- a/drivers/tee/optee/call.c +++ b/drivers/tee/optee/call.c @@ -554,6 +554,13 @@ static int check_mem_type(unsigned long start, size_t num_pages) struct mm_struct *mm = current->mm; int rc; + /* + * Allow kernel address to register with OP-TEE as kernel + * pages are configured as normal memory only. + */ + if (virt_addr_valid(start)) + return 0; + down_read(&mm->mmap_sem); rc = __check_mem_type(find_vma(mm, start), start + num_pages * PAGE_SIZE); -- 2.7.4