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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 0D2ACC433B4 for ; Mon, 19 Apr 2021 10:43:22 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id AAAC76101E for ; Mon, 19 Apr 2021 10:43:21 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AAAC76101E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:44908 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lYRNA-000256-Le for qemu-devel@archiver.kernel.org; Mon, 19 Apr 2021 06:43:20 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:33320) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lYR4m-0006de-20 for qemu-devel@nongnu.org; Mon, 19 Apr 2021 06:24:21 -0400 Received: from mga17.intel.com ([192.55.52.151]:24096) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lYR4j-000256-Vi for qemu-devel@nongnu.org; Mon, 19 Apr 2021 06:24:19 -0400 IronPort-SDR: wo/Y1Mu6PoPcGn71GNDnqS/38rk3wey+j8MNqhwGz3GZbA6bDumCJUUcVoRW2khkSmE7+jqgrD 8QfpZJdFXXkg== X-IronPort-AV: E=McAfee;i="6200,9189,9958"; a="175409343" X-IronPort-AV: E=Sophos;i="5.82,233,1613462400"; d="scan'208";a="175409343" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Apr 2021 03:23:18 -0700 IronPort-SDR: f2Lcc+a4Tyiwab9GrXw294YjVUyvWmtwVgT6YgMfzP37cMzER6VKU5mEtdNeh47ZRf1o8TaMRi dvJcvboXMQ4g== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.82,233,1613462400"; d="scan'208";a="419947540" Received: from icx-2s.bj.intel.com ([10.240.192.119]) by fmsmga008.fm.intel.com with ESMTP; 19 Apr 2021 03:23:17 -0700 From: Yang Zhong To: qemu-devel@nongnu.org Subject: [PATCH 29/32] qmp: Add the qmp_query_sgx_capabilities() Date: Mon, 19 Apr 2021 18:01:53 +0800 Message-Id: <20210419100156.53504-30-yang.zhong@intel.com> X-Mailer: git-send-email 2.29.2.334.gfaefdd61ec In-Reply-To: <20210419100156.53504-1-yang.zhong@intel.com> References: <20210419100156.53504-1-yang.zhong@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=192.55.52.151; envelope-from=yang.zhong@intel.com; helo=mga17.intel.com X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: yang.zhong@intel.com, pbonzini@redhat.com, kai.huang@intel.com, seanjc@google.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" The libvirt can use qmp_query_sgx_capabilities() to get the host sgx capabilitis. Signed-off-by: Yang Zhong --- hw/i386/sgx-epc.c | 64 ++++++++++++++++++++++++++++++++++++++ include/hw/i386/pc.h | 1 + monitor/qmp-cmds.c | 5 +++ qapi/misc.json | 19 +++++++++++ stubs/sgx-stub.c | 5 +++ tests/qtest/qmp-cmd-test.c | 1 + 6 files changed, 95 insertions(+) diff --git a/hw/i386/sgx-epc.c b/hw/i386/sgx-epc.c index 7daea0613b..7b198595d5 100644 --- a/hw/i386/sgx-epc.c +++ b/hw/i386/sgx-epc.c @@ -27,6 +27,14 @@ uint32_t epc_num; +#define SGX_MAX_EPC_SECTIONS 8 +#define SGX_CPUID_EPC_INVALID 0x0 + +/* A valid EPC section. */ +#define SGX_CPUID_EPC_SECTION 0x1 + +#define SGX_CPUID_EPC_MASK GENMASK(3, 0) + static Property sgx_epc_properties[] = { DEFINE_PROP_UINT64(SGX_EPC_ADDR_PROP, SGXEPCDevice, addr, 0), DEFINE_PROP_LINK(SGX_EPC_MEMDEV_PROP, SGXEPCDevice, hostmem, @@ -344,6 +352,62 @@ SGXInfo *sgx_get_info(void) return info; } +static uint64_t sgx_calc_section_metric(uint64_t low, uint64_t high) +{ + return (low & GENMASK_ULL(31, 12)) + + ((high & GENMASK_ULL(19, 0)) << 32); +} + +static uint64_t sgx_calc_host_epc_section_size(void) +{ + uint32_t i, type; + uint32_t eax, ebx, ecx, edx; + uint64_t size = 0; + + for (i = 0; i < SGX_MAX_EPC_SECTIONS; i++) { + host_cpuid(0x12, i + 2, &eax, &ebx, &ecx, &edx); + + type = eax & SGX_CPUID_EPC_MASK; + if (type == SGX_CPUID_EPC_INVALID) { + break; + } + + if (type != SGX_CPUID_EPC_SECTION) { + break; + } + + size += sgx_calc_section_metric(ecx, edx); + } + + return size; +} + +SGXInfo *sgx_get_capabilities(Error **errp) +{ + SGXInfo *info = NULL; + uint32_t eax, ebx, ecx, edx; + + int fd = open("/dev/sgx_vepc", O_RDWR); + if (fd < 0) { + error_setg(errp, "SGX is not enabled in KVM"); + return NULL; + } + + info = g_new0(SGXInfo, 1); + host_cpuid(0x7, 0, &eax, &ebx, &ecx, &edx); + + info->sgx = ebx & (1U << 2) ? true : false; + info->flc = ecx & (1U << 30) ? true : false; + + host_cpuid(0x12, 0, &eax, &ebx, &ecx, &edx); + info->sgx1 = eax & (1U << 0) ? true : false; + info->sgx2 = eax & (1U << 1) ? true : false; + + info->section_size = sgx_calc_host_epc_section_size(); + + return info; +} + static QemuOptsList sgx_epc_opts = { .name = "sgx-epc", .implied_opt_name = "id", diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h index cb74298117..a66795da0f 100644 --- a/include/hw/i386/pc.h +++ b/include/hw/i386/pc.h @@ -205,6 +205,7 @@ void pc_machine_init_sgx_epc(PCMachineState *pcms); void sgx_memory_backend_reset(HostMemoryBackend *backend, int fd, Error **errp); SGXInfo *sgx_get_info(void); +SGXInfo *sgx_get_capabilities(Error **errp); extern GlobalProperty pc_compat_5_2[]; extern const size_t pc_compat_5_2_len; diff --git a/monitor/qmp-cmds.c b/monitor/qmp-cmds.c index 48f7708ffe..f1360e9f4e 100644 --- a/monitor/qmp-cmds.c +++ b/monitor/qmp-cmds.c @@ -365,3 +365,8 @@ SGXInfo *qmp_query_sgx(Error **errp) return info; } + +SGXInfo *qmp_query_sgx_capabilities(Error **errp) +{ + return sgx_get_capabilities(errp); +} diff --git a/qapi/misc.json b/qapi/misc.json index 112a2f71cf..3f50b42d37 100644 --- a/qapi/misc.json +++ b/qapi/misc.json @@ -561,3 +561,22 @@ # ## { 'command': 'query-sgx', 'returns': 'SGXInfo' } + + +## +# @query-sgx-capabilities: +# +# Returns information from host SGX capabilities +# +# Returns: @SGXInfo +# +# Since: 5.1 +# +# Example: +# +# -> { "execute": "query-sgx-capabilities" } +# <- { "return": { "sgx": true, "sgx1" : true, "sgx2" : true, +# "flc": true, "section-size" : 0 } } +# +## +{ 'command': 'query-sgx-capabilities', 'returns': 'SGXInfo' } diff --git a/stubs/sgx-stub.c b/stubs/sgx-stub.c index c2b59a88fd..1dedf3f3db 100644 --- a/stubs/sgx-stub.c +++ b/stubs/sgx-stub.c @@ -5,3 +5,8 @@ SGXInfo *sgx_get_info(void) { return NULL; } + +SGXInfo *sgx_get_capabilities(Error **errp) +{ + return NULL; +} diff --git a/tests/qtest/qmp-cmd-test.c b/tests/qtest/qmp-cmd-test.c index b75f3364f3..1af2f74c28 100644 --- a/tests/qtest/qmp-cmd-test.c +++ b/tests/qtest/qmp-cmd-test.c @@ -101,6 +101,7 @@ static bool query_is_ignored(const char *cmd) "query-sev", "query-sev-capabilities", "query-sgx", + "query-sgx-capabilities", NULL }; int i; -- 2.29.2.334.gfaefdd61ec