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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 65CCBC433EF for ; Tue, 28 Sep 2021 13:35:51 +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 0E32960FC0 for ; Tue, 28 Sep 2021 13:35:51 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 0E32960FC0 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=nongnu.org Received: from localhost ([::1]:41898 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mVDGw-0002gw-6k for qemu-devel@archiver.kernel.org; Tue, 28 Sep 2021 09:35:50 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:38852) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mVCaK-0006gn-Iq for qemu-devel@nongnu.org; Tue, 28 Sep 2021 08:51:51 -0400 Received: from mail-ed1-x535.google.com ([2a00:1450:4864:20::535]:44889) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1mVCaI-0001XH-S0 for qemu-devel@nongnu.org; Tue, 28 Sep 2021 08:51:48 -0400 Received: by mail-ed1-x535.google.com with SMTP id v18so47488045edc.11 for ; Tue, 28 Sep 2021 05:51:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=sender:from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=ohYcK/h+3ibYka7ysojEKUGWGgYiFqj771QZXpbZi94=; b=bP5cRoCnTEx13Ay3LjxgwsYhFnHGppmVU059ZlJhidzLWFq+FZ24k6yg1xy+ruABYu iWp1Yy0dDg1+1fOe/lw4yze60bFX4ypEd22pqFrm5h6E9P98E1IRNcT7h24Ukm0lguYS xSzdK5FlvipGj1i00SG0vCU65pHzjghs/BlLoUmWn+xF2+YShlJzWt9kbCFlNK5RIekD 7moKo53z4NIFpMDhhb2Kx86sCUXYHLwBL5z8PQkrK9kikEWewGY6wk8oPYiIaOEj0h1h YyegZ/Oc76iJ84JhmHGiOiAtPxEq8Fok5xsWnmKXRx8fr2M87Vjx4xZ6C5nNvV985JzW HG8w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:sender:from:to:cc:subject:date:message-id :in-reply-to:references:mime-version:content-transfer-encoding; bh=ohYcK/h+3ibYka7ysojEKUGWGgYiFqj771QZXpbZi94=; b=HeIZXhljeHjUVthCcWiXJ8TOywAnFGYrYfdMOc+2vFsKcO6XRhaZPTOAjoYfwSs1tq TWdvMX/Qpaj4dL6/oOrnHXr2jXtsPE3zTL/V7lI0emhBpdFL22ihKVnPyLy+yQvpKxI7 1ec/i0iNuwZRsnqhkEWBRUGotmdK31zq+LJs/9iXHNjM1YOTL69vPcfH9b6B5Q8E2nb0 DEnd67a5Ifxsi71g8r6WmvCsgIRL5sCNlUWab6ralGfj+bhS7DxVnOoO6/xrJ4hVfpca LysaqssNJ2MS+8XHPwhnJEmyey6QAZpTWQN8KLnaSULODWV5Dgip6sLJa9QakSQFfJjw PkWg== X-Gm-Message-State: AOAM533X3HesZeCAhvTioH9iayB06XHUliatfeuu3doWnxZ8PJxFP3Qn Py6PGTulbO59B+d1sSEkYheN7TU/OZg= X-Google-Smtp-Source: ABdhPJzBUUMvLR6yq0m4bGi50cS3ZlUC2olXxH2tMau3GeWIshElW3jmaxBZoofS01WXDc92mvu6Ow== X-Received: by 2002:a17:906:2613:: with SMTP id h19mr6747777ejc.66.1632833499137; Tue, 28 Sep 2021 05:51:39 -0700 (PDT) Received: from avogadro.lan ([2001:b07:6468:f312:c8dd:75d4:99ab:290a]) by smtp.gmail.com with ESMTPSA id p24sm12641685edq.27.2021.09.28.05.51.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 28 Sep 2021 05:51:38 -0700 (PDT) From: Paolo Bonzini To: qemu-devel@nongnu.org Subject: [PULL 26/33] target/i386: Add the query-sgx-capabilities QMP command Date: Tue, 28 Sep 2021 14:51:09 +0200 Message-Id: <20210928125116.183620-27-pbonzini@redhat.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210928125116.183620-1-pbonzini@redhat.com> References: <20210928125116.183620-1-pbonzini@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2a00:1450:4864:20::535; envelope-from=paolo.bonzini@gmail.com; helo=mail-ed1-x535.google.com X-Spam_score_int: -14 X-Spam_score: -1.5 X-Spam_bar: - X-Spam_report: (-1.5 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FORGED_FROMDOMAIN=0.249, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.249, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no 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 Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Yang Zhong Libvirt can use query-sgx-capabilities to get the host sgx capabilities to decide how to allocate SGX EPC size to VM. Signed-off-by: Yang Zhong Message-Id: <20210910102258.46648-3-yang.zhong@intel.com> Signed-off-by: Paolo Bonzini --- hw/i386/sgx-stub.c | 6 ++++ hw/i386/sgx.c | 66 ++++++++++++++++++++++++++++++++++++++ include/hw/i386/sgx.h | 1 + qapi/misc-target.json | 18 +++++++++++ target/i386/monitor.c | 5 +++ tests/qtest/qmp-cmd-test.c | 1 + 6 files changed, 97 insertions(+) diff --git a/hw/i386/sgx-stub.c b/hw/i386/sgx-stub.c index 485e16ecc1..3be9f5ca32 100644 --- a/hw/i386/sgx-stub.c +++ b/hw/i386/sgx-stub.c @@ -9,6 +9,12 @@ SGXInfo *sgx_get_info(Error **errp) return NULL; } +SGXInfo *sgx_get_capabilities(Error **errp) +{ + error_setg(errp, "SGX support is not compiled in"); + return NULL; +} + void pc_machine_init_sgx_epc(PCMachineState *pcms) { memset(&pcms->sgx_epc, 0, sizeof(SGXEPCState)); diff --git a/hw/i386/sgx.c b/hw/i386/sgx.c index ea75398575..e481e9358f 100644 --- a/hw/i386/sgx.c +++ b/hw/i386/sgx.c @@ -18,6 +18,72 @@ #include "qapi/error.h" #include "exec/address-spaces.h" #include "hw/i386/sgx.h" +#include "sysemu/hw_accel.h" + +#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 0xF + +static uint64_t sgx_calc_section_metric(uint64_t low, uint64_t high) +{ + return (low & MAKE_64BIT_MASK(12, 20)) + + ((high & MAKE_64BIT_MASK(0, 20)) << 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 = qemu_open_old("/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(); + + close(fd); + + return info; +} SGXInfo *sgx_get_info(Error **errp) { diff --git a/include/hw/i386/sgx.h b/include/hw/i386/sgx.h index 2bf90b3f4f..16fc25725c 100644 --- a/include/hw/i386/sgx.h +++ b/include/hw/i386/sgx.h @@ -7,5 +7,6 @@ #include "qapi/qapi-types-misc-target.h" SGXInfo *sgx_get_info(Error **errp); +SGXInfo *sgx_get_capabilities(Error **errp); #endif diff --git a/qapi/misc-target.json b/qapi/misc-target.json index e2a347cc23..594fbd1577 100644 --- a/qapi/misc-target.json +++ b/qapi/misc-target.json @@ -376,3 +376,21 @@ # ## { 'command': 'query-sgx', 'returns': 'SGXInfo', 'if': 'TARGET_I386' } + +## +# @query-sgx-capabilities: +# +# Returns information from host SGX capabilities +# +# Returns: @SGXInfo +# +# Since: 6.2 +# +# Example: +# +# -> { "execute": "query-sgx-capabilities" } +# <- { "return": { "sgx": true, "sgx1" : true, "sgx2" : true, +# "flc": true, "section-size" : 0 } } +# +## +{ 'command': 'query-sgx-capabilities', 'returns': 'SGXInfo', 'if': 'TARGET_I386' } diff --git a/target/i386/monitor.c b/target/i386/monitor.c index d7384ba348..196c1c9e77 100644 --- a/target/i386/monitor.c +++ b/target/i386/monitor.c @@ -790,3 +790,8 @@ void hmp_info_sgx(Monitor *mon, const QDict *qdict) monitor_printf(mon, "size: %" PRIu64 "\n", info->section_size); } + +SGXInfo *qmp_query_sgx_capabilities(Error **errp) +{ + return sgx_get_capabilities(errp); +} 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; -- 2.31.1