From patchwork Thu Mar 8 12:48:48 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Brijesh Singh X-Patchwork-Id: 10267955 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id B5F0E60211 for ; Thu, 8 Mar 2018 12:50:19 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A6242298FE for ; Thu, 8 Mar 2018 12:50:19 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9A3A729902; Thu, 8 Mar 2018 12:50:19 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C8112298FE for ; Thu, 8 Mar 2018 12:50:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935751AbeCHMuN (ORCPT ); Thu, 8 Mar 2018 07:50:13 -0500 Received: from mail-cys01nam02on0040.outbound.protection.outlook.com ([104.47.37.40]:48672 "EHLO NAM02-CY1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S935582AbeCHMuK (ORCPT ); Thu, 8 Mar 2018 07:50:10 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amdcloud.onmicrosoft.com; s=selector1-amd-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version; bh=ade4jJzUv7oN2gmBFhcFGgJkOYwr7DwjFTnbZJdvhqE=; b=OG7FxVabUEqu9nqYgTO6LEcW3kHLC7acz5OdMHZIZhVQ/nQCq8urUyBD4c35c0MyIuT8sWu/4z9NRTXas2IRjSNpDa4/dQY+wDbAkmOAf7tlRzJrDkCZ1hbK72KKEhq7EufUzT/eqYN2i3SaUW5UjMFxTh21Q1b5A77I9apIBeI= Authentication-Results: spf=none (sender IP is ) smtp.mailfrom=brijesh.singh@amd.com; Received: from wsp141597wss.amd.com (165.204.78.1) by DM2PR12MB0156.namprd12.prod.outlook.com (2a01:111:e400:50ce::19) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384_P256) id 15.20.548.13; Thu, 8 Mar 2018 12:50:00 +0000 From: Brijesh Singh To: qemu-devel@nongnu.org Cc: Alistair Francis , Christian Borntraeger , Cornelia Huck , "Daniel P . Berrange" , "Dr. David Alan Gilbert" , "Michael S. Tsirkin" , "Edgar E. Iglesias" , Eduardo Habkost , Eric Blake , kvm@vger.kernel.org, Marcel Apfelbaum , Markus Armbruster , Paolo Bonzini , Peter Crosthwaite , Peter Maydell , Richard Henderson , Stefan Hajnoczi , Thomas Lendacky , Borislav Petkov , Alexander Graf , Bruce Rogers , Brijesh Singh , Richard Henderson Subject: [PATCH v12 15/28] sev/i386: add command to create launch memory encryption context Date: Thu, 8 Mar 2018 06:48:48 -0600 Message-Id: <20180308124901.83533-16-brijesh.singh@amd.com> X-Mailer: git-send-email 2.14.3 In-Reply-To: <20180308124901.83533-1-brijesh.singh@amd.com> References: <20180308124901.83533-1-brijesh.singh@amd.com> MIME-Version: 1.0 X-Originating-IP: [165.204.78.1] X-ClientProxiedBy: BN6PR14CA0031.namprd14.prod.outlook.com (2603:10b6:404:13f::17) To DM2PR12MB0156.namprd12.prod.outlook.com (2a01:111:e400:50ce::19) X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-HT: Tenant X-MS-Office365-Filtering-Correlation-Id: 10cc3e64-a0fb-4e55-67aa-08d584f31c14 X-Microsoft-Antispam: UriScan:; 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The encryption key created with the command will be used for encrypting the bootstrap images (such as guest bios). Cc: Paolo Bonzini Cc: Richard Henderson Cc: Eduardo Habkost Signed-off-by: Brijesh Singh --- target/i386/sev.c | 86 ++++++++++++++++++++++++++++++++++++++++++++++++ target/i386/trace-events | 2 ++ 2 files changed, 88 insertions(+) diff --git a/target/i386/sev.c b/target/i386/sev.c index 4f85035d5203..eee693745103 100644 --- a/target/i386/sev.c +++ b/target/i386/sev.c @@ -105,6 +105,17 @@ fw_error_to_str(int code) return sev_fw_errlist[code]; } +static void +sev_set_guest_state(SevState new_state) +{ + assert(new_state < SEV_STATE__MAX); + assert(sev_state); + + trace_kvm_sev_change_state(SevState_str(sev_state->state), + SevState_str(new_state)); + sev_state->state = new_state; +} + static void sev_ram_block_added(RAMBlockNotifier *n, void *host, size_t size) { @@ -406,6 +417,75 @@ sev_get_info(void) return info; } +static int +sev_read_file_base64(const char *filename, guchar **data, gsize *len) +{ + gsize sz; + gchar *base64; + GError *error = NULL; + + if (!g_file_get_contents(filename, &base64, &sz, &error)) { + error_report("failed to read '%s' (%s)", filename, error->message); + return -1; + } + + *data = g_base64_decode(base64, len); + return 0; +} + +static int +sev_launch_start(SEVState *s) +{ + gsize sz; + int ret = 1; + int fw_error; + QSevGuestInfo *sev = s->sev_info; + struct kvm_sev_launch_start *start; + guchar *session = NULL, *dh_cert = NULL; + + start = g_new0(struct kvm_sev_launch_start, 1); + + start->handle = object_property_get_int(OBJECT(sev), "handle", + &error_abort); + start->policy = object_property_get_int(OBJECT(sev), "policy", + &error_abort); + if (sev->session_file) { + if (sev_read_file_base64(sev->session_file, &session, &sz) < 0) { + return 1; + } + start->session_uaddr = (unsigned long)session; + start->session_len = sz; + } + + if (sev->dh_cert_file) { + if (sev_read_file_base64(sev->dh_cert_file, &dh_cert, &sz) < 0) { + return 1; + } + start->dh_uaddr = (unsigned long)dh_cert; + start->dh_len = sz; + } + + trace_kvm_sev_launch_start(start->policy, session, dh_cert); + ret = sev_ioctl(s->sev_fd, KVM_SEV_LAUNCH_START, start, &fw_error); + if (ret < 0) { + error_report("%s: LAUNCH_START ret=%d fw_error=%d '%s'", + __func__, ret, fw_error, fw_error_to_str(fw_error)); + return 1; + } + + object_property_set_int(OBJECT(sev), start->handle, "handle", + &error_abort); + sev_set_guest_state(SEV_STATE_LUPDATE); + s->handle = start->handle; + s->policy = start->policy; + + g_free(start); + g_free(session); + g_free(dh_cert); + + return 0; +} + void * sev_guest_init(const char *id) { @@ -476,6 +556,12 @@ sev_guest_init(const char *id) goto err; } + ret = sev_launch_start(s); + if (ret) { + error_report("%s: failed to create encryption context", __func__); + goto err; + } + ram_block_notifier_add(&sev_ram_notifier); return s; diff --git a/target/i386/trace-events b/target/i386/trace-events index ffa3d2250425..9402251e9991 100644 --- a/target/i386/trace-events +++ b/target/i386/trace-events @@ -10,3 +10,5 @@ kvm_x86_update_msi_routes(int num) "Updated %d MSI routes" kvm_sev_init(void) "" kvm_memcrypt_register_region(void *addr, size_t len) "addr %p len 0x%lu" kvm_memcrypt_unregister_region(void *addr, size_t len) "addr %p len 0x%lu" +kvm_sev_change_state(const char *old, const char *new) "%s -> %s" +kvm_sev_launch_start(int policy, void *session, void *pdh) "policy 0x%x session %p pdh %p"