From patchwork Thu Oct 17 03:03:37 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Christopherson X-Patchwork-Id: 11194703 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 721FC29B1 for ; Thu, 17 Oct 2019 03:03:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 526FC218DE for ; Thu, 17 Oct 2019 03:03:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2392057AbfJQDDq (ORCPT ); Wed, 16 Oct 2019 23:03:46 -0400 Received: from mga01.intel.com ([192.55.52.88]:16893 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2392120AbfJQDDq (ORCPT ); Wed, 16 Oct 2019 23:03:46 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga101.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 16 Oct 2019 20:03:46 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.67,306,1566889200"; d="scan'208";a="195026854" Received: from sjchrist-coffee.jf.intel.com ([10.54.74.41]) by fmsmga008.fm.intel.com with ESMTP; 16 Oct 2019 20:03:45 -0700 From: Sean Christopherson To: Jarkko Sakkinen Cc: linux-sgx@vger.kernel.org, Cedric Xing , Andy Lutomirski Subject: [PATCH for_v2? v2 11/14] selftests/x86/sgx: Add a check on the vDSO exception reporting mechanism Date: Wed, 16 Oct 2019 20:03:37 -0700 Message-Id: <20191017030340.18301-12-sean.j.christopherson@intel.com> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20191017030340.18301-1-sean.j.christopherson@intel.com> References: <20191017030340.18301-1-sean.j.christopherson@intel.com> MIME-Version: 1.0 Sender: linux-sgx-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-sgx@vger.kernel.org Add a check to verify that an exception on EENTER is correctly reported. Although the type of exception doesn't truly matter, e.g. a page fault is no more or less interesting than a general protection fault, use an unaligned TCS to trigger a #GP to avoid complications on platforms that report EPCM related #PFs as #GPs, e.g. SGX1 systems. Suggested-by: Cedric Xing Signed-off-by: Sean Christopherson --- tools/testing/selftests/x86/sgx/defines.h | 4 ++++ tools/testing/selftests/x86/sgx/main.c | 6 ++++++ 2 files changed, 10 insertions(+) diff --git a/tools/testing/selftests/x86/sgx/defines.h b/tools/testing/selftests/x86/sgx/defines.h index 1e67f2f29f42..b303bcaeb8dd 100644 --- a/tools/testing/selftests/x86/sgx/defines.h +++ b/tools/testing/selftests/x86/sgx/defines.h @@ -36,4 +36,8 @@ typedef uint64_t u64; #include "../../../../../arch/x86/kernel/cpu/sgx/arch.h" #include "../../../../../arch/x86/include/uapi/asm/sgx.h" +#define ENCLU_EENTER 2 + +#define GP_VECTOR 13 + #endif /* DEFINES_H */ diff --git a/tools/testing/selftests/x86/sgx/main.c b/tools/testing/selftests/x86/sgx/main.c index 24647050657a..56e13ae4f1ce 100644 --- a/tools/testing/selftests/x86/sgx/main.c +++ b/tools/testing/selftests/x86/sgx/main.c @@ -334,6 +334,12 @@ static void test_sgx_vdso(struct sgx_secs *secs) sgx_call_vdso((void *)&MAGIC, &result, NULL, NULL, NULL, NULL, (void *)secs->base, &exception, NULL); EXPECT_EQ(result, MAGIC); + + /* Verify a #GP is reported if the TCS isn't 4k aligned. */ + sgx_call_vdso((void *)&MAGIC, &result, NULL, NULL, NULL, NULL, + (void *)(secs->base | 0xfff), &exception, NULL); + EXPECT_EQ(exception.trapnr, GP_VECTOR); + EXPECT_EQ(exception.leaf, ENCLU_EENTER); } int main(int argc, char *argv[], char *envp[])