From patchwork Thu May 21 03:43:02 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: David Gibson X-Patchwork-Id: 11562179 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 8E5D1138A for ; Thu, 21 May 2020 03:43:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 75FD120748 for ; Thu, 21 May 2020 03:43:31 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=gibson.dropbear.id.au header.i=@gibson.dropbear.id.au header.b="LNlximYB" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728322AbgEUDna (ORCPT ); Wed, 20 May 2020 23:43:30 -0400 Received: from ozlabs.org ([203.11.71.1]:55071 "EHLO ozlabs.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728293AbgEUDnV (ORCPT ); Wed, 20 May 2020 23:43:21 -0400 Received: by ozlabs.org (Postfix, from userid 1007) id 49SFnt57zsz9sVF; Thu, 21 May 2020 13:43:14 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gibson.dropbear.id.au; s=201602; t=1590032594; bh=eup3iyYUWnuqB9PIhUENkDwPcTYFDbBI7Pm2SOCB26g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LNlximYBa0hlzRkqewPUvqQcL4/R29JENQCQDo/w2gabH//RHCoafExY6olBai97u dBQwRafjSrUt1N7sGl4TCztWSHVjBRgZF3YIvdHrb5leAvrL2fd0eMZZRQFV5J5kPj /BTpeFjCzuO4WBH9PcgTwAQYVEQ4Kou+DlBjYV8c= From: David Gibson To: qemu-devel@nongnu.org, brijesh.singh@amd.com, frankja@linux.ibm.com, dgilbert@redhat.com, pair@us.ibm.com Cc: qemu-ppc@nongnu.org, kvm@vger.kernel.org, David Gibson , mdroth@linux.vnet.ibm.com, cohuck@redhat.com, Marcel Apfelbaum , Paolo Bonzini , "Michael S. Tsirkin" , Richard Henderson , Eduardo Habkost Subject: [RFC v2 16/18] guest memory protection: Add Error ** to GuestMemoryProtection::kvm_init Date: Thu, 21 May 2020 13:43:02 +1000 Message-Id: <20200521034304.340040-17-david@gibson.dropbear.id.au> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200521034304.340040-1-david@gibson.dropbear.id.au> References: <20200521034304.340040-1-david@gibson.dropbear.id.au> MIME-Version: 1.0 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org This allows failures to be reported richly and idiomatically. Signed-off-by: David Gibson Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Richard Henderson --- accel/kvm/kvm-all.c | 4 +++- include/exec/guest-memory-protection.h | 2 +- target/i386/sev.c | 31 +++++++++++++------------- 3 files changed, 19 insertions(+), 18 deletions(-) diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c index 1b10e94222..4011699736 100644 --- a/accel/kvm/kvm-all.c +++ b/accel/kvm/kvm-all.c @@ -2079,9 +2079,11 @@ static int kvm_init(MachineState *ms) if (ms->gmpo) { GuestMemoryProtectionClass *gmpc = GUEST_MEMORY_PROTECTION_GET_CLASS(ms->gmpo); + Error *local_err = NULL; - ret = gmpc->kvm_init(ms->gmpo); + ret = gmpc->kvm_init(ms->gmpo, &local_err); if (ret < 0) { + error_report_err(local_err); goto err; } } diff --git a/include/exec/guest-memory-protection.h b/include/exec/guest-memory-protection.h index 7d959b4910..2a88475136 100644 --- a/include/exec/guest-memory-protection.h +++ b/include/exec/guest-memory-protection.h @@ -32,7 +32,7 @@ typedef struct GuestMemoryProtection GuestMemoryProtection; typedef struct GuestMemoryProtectionClass { InterfaceClass parent; - int (*kvm_init)(GuestMemoryProtection *); + int (*kvm_init)(GuestMemoryProtection *, Error **); int (*encrypt_data)(GuestMemoryProtection *, uint8_t *, uint64_t); } GuestMemoryProtectionClass; diff --git a/target/i386/sev.c b/target/i386/sev.c index 60e9d8c735..6a56ec203b 100644 --- a/target/i386/sev.c +++ b/target/i386/sev.c @@ -617,7 +617,7 @@ sev_vm_state_change(void *opaque, int running, RunState state) } } -static int sev_kvm_init(GuestMemoryProtection *gmpo) +static int sev_kvm_init(GuestMemoryProtection *gmpo, Error **errp) { SevGuestState *sev = SEV_GUEST(gmpo); char *devname; @@ -633,14 +633,14 @@ static int sev_kvm_init(GuestMemoryProtection *gmpo) host_cbitpos = ebx & 0x3f; if (host_cbitpos != sev->cbitpos) { - error_report("%s: cbitpos check failed, host '%d' requested '%d'", - __func__, host_cbitpos, sev->cbitpos); + error_setg(errp, "%s: cbitpos check failed, host '%d' requested '%d'", + __func__, host_cbitpos, sev->cbitpos); goto err; } if (sev->reduced_phys_bits < 1) { - error_report("%s: reduced_phys_bits check failed, it should be >=1," - " requested '%d'", __func__, sev->reduced_phys_bits); + error_setg(errp, "%s: reduced_phys_bits check failed, it should be >=1," + " requested '%d'", __func__, sev->reduced_phys_bits); goto err; } @@ -649,20 +649,19 @@ static int sev_kvm_init(GuestMemoryProtection *gmpo) devname = object_property_get_str(OBJECT(sev), "sev-device", NULL); sev->sev_fd = open(devname, O_RDWR); if (sev->sev_fd < 0) { - error_report("%s: Failed to open %s '%s'", __func__, - devname, strerror(errno)); - } - g_free(devname); - if (sev->sev_fd < 0) { + error_setg(errp, "%s: Failed to open %s '%s'", __func__, + devname, strerror(errno)); + g_free(devname); goto err; } + g_free(devname); ret = sev_platform_ioctl(sev->sev_fd, SEV_PLATFORM_STATUS, &status, &fw_error); if (ret) { - error_report("%s: failed to get platform status ret=%d " - "fw_error='%d: %s'", __func__, ret, fw_error, - fw_error_to_str(fw_error)); + error_setg(errp, "%s: failed to get platform status ret=%d " + "fw_error='%d: %s'", __func__, ret, fw_error, + fw_error_to_str(fw_error)); goto err; } sev->build_id = status.build; @@ -672,14 +671,14 @@ static int sev_kvm_init(GuestMemoryProtection *gmpo) trace_kvm_sev_init(); ret = sev_ioctl(sev->sev_fd, KVM_SEV_INIT, NULL, &fw_error); if (ret) { - error_report("%s: failed to initialize ret=%d fw_error=%d '%s'", - __func__, ret, fw_error, fw_error_to_str(fw_error)); + error_setg(errp, "%s: failed to initialize ret=%d fw_error=%d '%s'", + __func__, ret, fw_error, fw_error_to_str(fw_error)); goto err; } ret = sev_launch_start(sev); if (ret) { - error_report("%s: failed to create encryption context", __func__); + error_setg(errp, "%s: failed to create encryption context", __func__); goto err; }