From patchwork Fri Apr 10 23:17:05 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Christopherson X-Patchwork-Id: 11483803 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 84241174A for ; Fri, 10 Apr 2020 23:17:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 674972084D for ; Fri, 10 Apr 2020 23:17:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726834AbgDJXRN (ORCPT ); Fri, 10 Apr 2020 19:17:13 -0400 Received: from mga02.intel.com ([134.134.136.20]:20816 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726806AbgDJXRN (ORCPT ); Fri, 10 Apr 2020 19:17:13 -0400 IronPort-SDR: 29D+sTUQ3xyntsLL/V83JwwcMd8Lj1FJAamtzpTaPWr2bdMuIZqbwt0qNPCZAEEwfHlBq4TwEO Tl8JT+eAg7Sw== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Apr 2020 16:17:12 -0700 IronPort-SDR: 1z1Is419uA7ZWd1ZZMMa72LoAPlHer1krhvVdwX4j8FVpnJU6vKkymUaDFgJz4CRlpv2qDcgtk g6g7QWUYYx/A== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.72,368,1580803200"; d="scan'208";a="452542247" Received: from sjchrist-coffee.jf.intel.com ([10.54.74.202]) by fmsmga005.fm.intel.com with ESMTP; 10 Apr 2020 16:17:12 -0700 From: Sean Christopherson To: Paolo Bonzini , Christian Borntraeger , Janosch Frank Cc: David Hildenbrand , Cornelia Huck , kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Sean Christopherson , Peter Xu , Andrew Jones , Wainer dos Santos Moschetta Subject: [PATCH 08/10] KVM: selftests: Add "zero" testcase to set_memory_region_test Date: Fri, 10 Apr 2020 16:17:05 -0700 Message-Id: <20200410231707.7128-9-sean.j.christopherson@intel.com> X-Mailer: git-send-email 2.26.0 In-Reply-To: <20200410231707.7128-1-sean.j.christopherson@intel.com> References: <20200410231707.7128-1-sean.j.christopherson@intel.com> MIME-Version: 1.0 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Add a testcase for running a guest with no memslots to the memory region test. The expected result on x86_64 is that the guest will trigger an internal KVM error due to the initial code fetch encountering a non-existent memslot and resulting in an emulation failure. Signed-off-by: Sean Christopherson --- .../kvm/x86_64/set_memory_region_test.c | 24 +++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/tools/testing/selftests/kvm/x86_64/set_memory_region_test.c b/tools/testing/selftests/kvm/x86_64/set_memory_region_test.c index b556024af683..c274ce6b4ba2 100644 --- a/tools/testing/selftests/kvm/x86_64/set_memory_region_test.c +++ b/tools/testing/selftests/kvm/x86_64/set_memory_region_test.c @@ -289,6 +289,28 @@ static void test_delete_memory_region(void) kvm_vm_free(vm); } +static void test_zero_memory_regions(void) +{ + struct kvm_run *run; + struct kvm_vm *vm; + + pr_info("Testing KVM_RUN with zero added memory regions\n"); + + vm = vm_create(VM_MODE_DEFAULT, 0, O_RDWR); + vm_vcpu_add(vm, VCPU_ID); + + TEST_ASSERT(!ioctl(vm_get_fd(vm), KVM_SET_NR_MMU_PAGES, 64), + "KVM_SET_NR_MMU_PAGES failed, errno = %d\n", errno); + + vcpu_run(vm, VCPU_ID); + + run = vcpu_state(vm, VCPU_ID); + TEST_ASSERT(run->exit_reason == KVM_EXIT_INTERNAL_ERROR, + "Unexpected exit_reason = %u\n", run->exit_reason); + + kvm_vm_free(vm); +} + int main(int argc, char *argv[]) { int i, loops; @@ -296,6 +318,8 @@ int main(int argc, char *argv[]) /* Tell stdout not to buffer its content */ setbuf(stdout, NULL); + test_zero_memory_regions(); + if (argc > 1) loops = atoi(argv[1]); else