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=-7.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS autolearn=no 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 24125C433E1 for ; Wed, 12 Aug 2020 01:31:48 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id DDAFF2076C for ; Wed, 12 Aug 2020 01:31:47 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="INoQK9B+" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DDAFF2076C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 80A048D0007; Tue, 11 Aug 2020 21:31:47 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 793AE8D0001; Tue, 11 Aug 2020 21:31:47 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 667B68D0007; Tue, 11 Aug 2020 21:31:47 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0254.hostedemail.com [216.40.44.254]) by kanga.kvack.org (Postfix) with ESMTP id 49C378D0001 for ; Tue, 11 Aug 2020 21:31:47 -0400 (EDT) Received: from smtpin20.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 0E9A8824805A for ; Wed, 12 Aug 2020 01:31:47 +0000 (UTC) X-FDA: 77140189854.20.brain39_600a70326fe7 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin20.hostedemail.com (Postfix) with ESMTP id D5B29180C07A3 for ; Wed, 12 Aug 2020 01:31:46 +0000 (UTC) X-HE-Tag: brain39_600a70326fe7 X-Filterd-Recvd-Size: 3472 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf49.hostedemail.com (Postfix) with ESMTP for ; Wed, 12 Aug 2020 01:31:46 +0000 (UTC) Received: from localhost.localdomain (c-73-231-172-41.hsd1.ca.comcast.net [73.231.172.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 640B5206B2; Wed, 12 Aug 2020 01:31:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597195905; bh=Q/9tUn2pMbMLHYOcmNyiaP59st/oFr3ssKMDobiL838=; h=Date:From:To:Subject:In-Reply-To:From; b=INoQK9B+Vh3Je07rJUxLVnxCq1QuhqeZjmXIVjwZBRyESWLnkGaf1ectrb7lMgqpa DL4b3Vj9BRWRL7RbvBAud7z8wjWOrP8UVGjJSGw+yXSBFauUf/SVk7oIeiwuHwz6Ma hpHwLJjBVrRWva0ST7zCSYwNnAVpGMg4bUxXhVwA= Date: Tue, 11 Aug 2020 18:31:45 -0700 From: Andrew Morton To: akpm@linux-foundation.org, bharata@linux.ibm.com, hch@lst.de, jgg@mellanox.com, jglisse@redhat.com, jhubbard@nvidia.com, linux-mm@kvack.org, mm-commits@vger.kernel.org, rcampbell@nvidia.com, shuah@kernel.org, torvalds@linux-foundation.org Subject: [patch 028/165] mm/migrate: add migrate-shared test for migrate_vma_*() Message-ID: <20200812013145.OdoSBJtGw%akpm@linux-foundation.org> In-Reply-To: <20200811182949.e12ae9a472e3b5e27e16ad6c@linux-foundation.org> User-Agent: s-nail v14.8.16 X-Rspamd-Queue-Id: D5B29180C07A3 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam04 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: Ralph Campbell Subject: mm/migrate: add migrate-shared test for migrate_vma_*() Add a migrate_vma_*() self test for mmap(MAP_SHARED) to verify that !vma_anonymous() ranges won't be migrated. Link: http://lkml.kernel.org/r/20200710194840.7602-3-rcampbell@nvidia.com Link: http://lkml.kernel.org/r/20200709165711.26584-3-rcampbell@nvidia.com Signed-off-by: Ralph Campbell Cc: Jerome Glisse Cc: John Hubbard Cc: Christoph Hellwig Cc: Jason Gunthorpe Cc: "Bharata B Rao" Cc: Shuah Khan Signed-off-by: Andrew Morton --- tools/testing/selftests/vm/hmm-tests.c | 35 +++++++++++++++++++++++ 1 file changed, 35 insertions(+) --- a/tools/testing/selftests/vm/hmm-tests.c~mm-migrate-add-migrate-shared-test-for-migrate_vma_ +++ a/tools/testing/selftests/vm/hmm-tests.c @@ -942,6 +942,41 @@ TEST_F(hmm, migrate_fault) } /* + * 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. */ TEST_F(hmm2, migrate_mixed) _