From patchwork Fri Jul 10 19:48:40 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ralph Campbell X-Patchwork-Id: 11657347 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 347B813BD for ; Fri, 10 Jul 2020 19:49:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 186FA20748 for ; Fri, 10 Jul 2020 19:49:03 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=nvidia.com header.i=@nvidia.com header.b="GdZuurl2" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728521AbgGJTs5 (ORCPT ); Fri, 10 Jul 2020 15:48:57 -0400 Received: from hqnvemgate26.nvidia.com ([216.228.121.65]:11372 "EHLO hqnvemgate26.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728404AbgGJTsy (ORCPT ); Fri, 10 Jul 2020 15:48:54 -0400 Received: from hqpgpgate102.nvidia.com (Not Verified[216.228.121.13]) by hqnvemgate26.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Fri, 10 Jul 2020 12:48:41 -0700 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate102.nvidia.com (PGP Universal service); Fri, 10 Jul 2020 12:48:54 -0700 X-PGP-Universal: processed; by hqpgpgate102.nvidia.com on Fri, 10 Jul 2020 12:48:54 -0700 Received: from HQMAIL107.nvidia.com (172.20.187.13) by HQMAIL109.nvidia.com (172.20.187.15) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Fri, 10 Jul 2020 19:48:44 +0000 Received: from rnnvemgw01.nvidia.com (10.128.109.123) by HQMAIL107.nvidia.com (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Fri, 10 Jul 2020 19:48:44 +0000 Received: from rcampbell-dev.nvidia.com (Not Verified[10.110.48.66]) by rnnvemgw01.nvidia.com with Trustwave SEG (v7,5,8,10121) id ; Fri, 10 Jul 2020 12:48:44 -0700 From: Ralph Campbell To: , , , CC: Jerome Glisse , John Hubbard , Christoph Hellwig , Jason Gunthorpe , "Bharata B Rao" , Shuah Khan , Andrew Morton , Ralph Campbell Subject: [PATCH v2 2/2] mm/migrate: add migrate-shared test for migrate_vma_*() Date: Fri, 10 Jul 2020 12:48:40 -0700 Message-ID: <20200710194840.7602-3-rcampbell@nvidia.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200710194840.7602-1-rcampbell@nvidia.com> References: <20200710194840.7602-1-rcampbell@nvidia.com> MIME-Version: 1.0 X-NVConfidentiality: public DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1594410521; bh=7bNg4+W9LUQA56P48nlUXj5006Ok1vcN7L9AinD3FBk=; h=X-PGP-Universal:From:To:CC:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:MIME-Version:X-NVConfidentiality: Content-Transfer-Encoding:Content-Type; b=GdZuurl2c1vcX7Bo7E3MmL+tKh8sqjTCxeafBVEKNXdGhoxRKXCs1zUSd2WjHIZ4M 2jEMhfQZ/rohsR75Pra4m19ZfrtVRCxfYRbv1wS7EVFNHlD1zLi4P92swbjK3hC1Ms iIKd4DCEUvHiLqing5Ff6sf9ftQM1Yf6H8j7UR1pdg50BzKa28K7JZmwnwp2vxjiyb kH8k6nf8dF/woJlVBnOoVbZTGBrbx6J1rAevOrBa/Kh1qnaAdy3J873BCSq03Anzt+ UTyxOIMzUooHtJCea1d5bIDFZVPuBjUHUwkExANruA10lT8gxU83QCfOehKeAgoAqt LMJZmrSYwfd2A== Sender: linux-kselftest-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org Add a migrate_vma_*() self test for mmap(MAP_SHARED) to verify that !vma_anonymous() ranges won't be migrated. Signed-off-by: Ralph Campbell --- tools/testing/selftests/vm/hmm-tests.c | 35 ++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) diff --git a/tools/testing/selftests/vm/hmm-tests.c b/tools/testing/selftests/vm/hmm-tests.c index 79db22604019..e83d3ab37697 100644 --- a/tools/testing/selftests/vm/hmm-tests.c +++ b/tools/testing/selftests/vm/hmm-tests.c @@ -931,6 +931,41 @@ TEST_F(hmm, migrate_fault) hmm_buffer_free(buffer); } +/* + * Migrate anonymous shared memory to device private memory. + */ +TEST_F(hmm, migrate_shared) +{ + struct hmm_buffer *buffer; + unsigned long npages; + unsigned long size; + int ret; + + npages = ALIGN(HMM_BUFFER_SIZE, self->page_size) >> self->page_shift; + ASSERT_NE(npages, 0); + size = npages << self->page_shift; + + buffer = malloc(sizeof(*buffer)); + ASSERT_NE(buffer, NULL); + + buffer->fd = -1; + buffer->size = size; + buffer->mirror = malloc(size); + ASSERT_NE(buffer->mirror, NULL); + + buffer->ptr = mmap(NULL, size, + PROT_READ | PROT_WRITE, + MAP_SHARED | MAP_ANONYMOUS, + buffer->fd, 0); + ASSERT_NE(buffer->ptr, MAP_FAILED); + + /* Migrate memory to device. */ + ret = hmm_dmirror_cmd(self->fd, HMM_DMIRROR_MIGRATE, buffer, npages); + ASSERT_EQ(ret, -ENOENT); + + hmm_buffer_free(buffer); +} + /* * Try to migrate various memory types to device private memory. */