From patchwork Tue Jun 6 19:04:02 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ackerley Tng X-Patchwork-Id: 13269607 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 22A1BC7EE2A for ; Tue, 6 Jun 2023 19:07:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239425AbjFFTHk (ORCPT ); Tue, 6 Jun 2023 15:07:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39246 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239241AbjFFTGv (ORCPT ); Tue, 6 Jun 2023 15:06:51 -0400 Received: from mail-yb1-xb4a.google.com (mail-yb1-xb4a.google.com [IPv6:2607:f8b0:4864:20::b4a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 83B3719B5 for ; Tue, 6 Jun 2023 12:05:03 -0700 (PDT) Received: by mail-yb1-xb4a.google.com with SMTP id 3f1490d57ef6-ba81b24b878so10281309276.3 for ; Tue, 06 Jun 2023 12:05:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1686078284; x=1688670284; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=xVPr1dIpnxklN0GMh0WV40gxjr+XB/duCXqFm/4Eedk=; b=OpWI8RPhFgIw5MoV+RS2cmQpFpGPXsQqq6sU1K61/owOmBB1Ql0+w7FJ3nZldnf8p9 +qYBb0NtRqwQu8dWDMwOUTG0ATZVJvom27ARS7xgWW5TfboiScGSMfZ8N45qzVKLAY2H 4CU726nNQYrYfpWC/qzLp0r9J8us1SCC2lEqZrYJr9OdHyFq/TUwds9iZNdlTcobAHRr ZZALUwW7mEujbc7yxykj2/g4xPWE/5QaSH6KTAlpAQ02/2PJYX27kEua6tRoLiCjwPDV pyCH4FFtF/i8mbhld01B2RuTsSf6teTynYWziBlTcigs4W2oRa0ZqtYf/T+WFi+IMehY DIyA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1686078284; x=1688670284; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=xVPr1dIpnxklN0GMh0WV40gxjr+XB/duCXqFm/4Eedk=; b=Zbq4iahxP3TMRcg9LgsxF9hV0xXm32x7BkC8FKI4kW0rqx2mvpQeb+La1NKekLW1vD nYrNfiTKX+mL/hwbwAzlM8TbsZMXYdTh4OWDLyNapVwCrPg8yC0vo30LwWDkSYhXuaAa EoQTWI+n0pwBkTrZS4Q4FkDB2euqGK/uRuPxNwDOkPhtZ6L3WihopNbmW2oXC0qqfLUM hAwpkXGtLfMV3ohgyLckB6hueyb5+ZgVi3ZKWFofw3AfYJAZriuZJyMA4STPUdAM785y dgCv0q77ZsiglLy2+cavU2vUuexsX6xzNSBAbZPVNNPtjaMwLoXPAzkaU/dAbw+qtz+1 ubrQ== X-Gm-Message-State: AC+VfDyyWDMp7tgr9Tjvybzp5Qpl0v7Welk/oE7hEXfLKlqY3xTUWAGy 5gvMtzZfStiWIrOZZsiBbv3L8FJ2IU71YB/sJQ== X-Google-Smtp-Source: ACHHUZ6iw5MaJvx6Biay/guXDPe54wqyOEjmtoFNQ8eDgpYM8NsdWofxvbuGdqaNO+FVNrUBL1ysZvJNR4qrxfEOBQ== X-Received: from ackerleytng-ctop.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:13f8]) (user=ackerleytng job=sendgmr) by 2002:a05:6902:72d:b0:ba1:d0:7f7c with SMTP id l13-20020a056902072d00b00ba100d07f7cmr1128681ybt.2.1686078284464; Tue, 06 Jun 2023 12:04:44 -0700 (PDT) Date: Tue, 6 Jun 2023 19:04:02 +0000 In-Reply-To: Mime-Version: 1.0 References: X-Mailer: git-send-email 2.41.0.rc0.172.g3f132b7071-goog Message-ID: <2b26bcc8b10f8a11e6405d4cea5f1235e82e83c9.1686077275.git.ackerleytng@google.com> Subject: [RFC PATCH 17/19] KVM: selftests: Add basic selftests for hugetlbfs-backed guest_mem From: Ackerley Tng To: akpm@linux-foundation.org, mike.kravetz@oracle.com, muchun.song@linux.dev, pbonzini@redhat.com, seanjc@google.com, shuah@kernel.org, willy@infradead.org Cc: brauner@kernel.org, chao.p.peng@linux.intel.com, coltonlewis@google.com, david@redhat.com, dhildenb@redhat.com, dmatlack@google.com, erdemaktas@google.com, hughd@google.com, isaku.yamahata@gmail.com, jarkko@kernel.org, jmattson@google.com, joro@8bytes.org, jthoughton@google.com, jun.nakajima@intel.com, kirill.shutemov@linux.intel.com, liam.merwick@oracle.com, mail@maciej.szmigiero.name, mhocko@suse.com, michael.roth@amd.com, qperret@google.com, rientjes@google.com, rppt@kernel.org, steven.price@arm.com, tabba@google.com, vannapurve@google.com, vbabka@suse.cz, vipinsh@google.com, vkuznets@redhat.com, wei.w.wang@intel.com, yu.c.zhang@linux.intel.com, kvm@vger.kernel.org, linux-api@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-mm@kvack.org, qemu-devel@nongnu.org, x86@kernel.org, Ackerley Tng Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org Add tests for 2MB and 1GB page sizes. Signed-off-by: Ackerley Tng --- .../testing/selftests/kvm/guest_memfd_test.c | 33 ++++++++++++++----- 1 file changed, 24 insertions(+), 9 deletions(-) diff --git a/tools/testing/selftests/kvm/guest_memfd_test.c b/tools/testing/selftests/kvm/guest_memfd_test.c index 059b33cdecec..6e24631119c6 100644 --- a/tools/testing/selftests/kvm/guest_memfd_test.c +++ b/tools/testing/selftests/kvm/guest_memfd_test.c @@ -90,20 +90,14 @@ static void test_fallocate(int fd, size_t page_size, size_t total_size) TEST_ASSERT(!ret, "fallocate to restore punched hole should succeed"); } - -int main(int argc, char *argv[]) +void test_guest_mem(struct kvm_vm *vm, uint32_t flags, size_t page_size) { - size_t page_size; - size_t total_size; int fd; - struct kvm_vm *vm; + size_t total_size; - page_size = getpagesize(); total_size = page_size * 4; - vm = vm_create_barebones(); - - fd = vm_create_guest_memfd(vm, total_size, 0); + fd = vm_create_guest_memfd(vm, total_size, flags); test_file_read_write(fd); test_mmap(fd, page_size); @@ -112,3 +106,24 @@ int main(int argc, char *argv[]) close(fd); } + +int main(int argc, char *argv[]) +{ + struct kvm_vm *vm = vm_create_barebones(); + + printf("Test guest mem 4K\n"); + test_guest_mem(vm, 0, getpagesize()); + printf(" PASSED\n"); + + printf("Test guest mem hugetlb 2M\n"); + test_guest_mem( + vm, KVM_GUEST_MEMFD_HUGETLB | KVM_GUEST_MEMFD_HUGE_2MB, 2UL << 20); + printf(" PASSED\n"); + + printf("Test guest mem hugetlb 1G\n"); + test_guest_mem( + vm, KVM_GUEST_MEMFD_HUGETLB | KVM_GUEST_MEMFD_HUGE_1GB, 1UL << 30); + printf(" PASSED\n"); + + return 0; +}