From patchwork Thu Mar 31 08:35:49 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Gerd Hoffmann X-Patchwork-Id: 1611630 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=JoHhW7Xe; dkim-atps=neutral Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) 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 bilbo.ozlabs.org (Postfix) with ESMTPS id 4KTcH90yvGz9sGD for ; Thu, 31 Mar 2022 19:41:55 +1100 (AEDT) Received: from localhost ([::1]:60138 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nZqNM-0001KQ-FO for incoming@patchwork.ozlabs.org; Thu, 31 Mar 2022 04:41:52 -0400 Received: from eggs.gnu.org ([209.51.188.92]:60448) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nZqHh-0002WD-Nh for qemu-devel@nongnu.org; Thu, 31 Mar 2022 04:36:04 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:21545) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nZqHc-000643-G9 for qemu-devel@nongnu.org; Thu, 31 Mar 2022 04:35:59 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1648715754; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Vkpdbqs6f16fFn0iGKwRJVu8TfVNEVzHRiUkgeFkEnU=; b=JoHhW7XeOz+XKpCtxOEV+tFi70orhYBckG89XV2VxYx9OF2xHVL0LY4rSVYlyfnrFfCMkZ qkIZ/PXbhb/xY4CV3GKjXzrMTdJZZb5Jo3VmIWF4P24PcOJFE8tKHn9qkVLbCflgwYMKEi vv6LelgDZGrqwU1m3Ldc592icFOPiCQ= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-18-t5k9vRUyPDa2UqjfogZ3JA-1; Thu, 31 Mar 2022 04:35:53 -0400 X-MC-Unique: t5k9vRUyPDa2UqjfogZ3JA-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.rdu2.redhat.com [10.11.54.8]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id C7DB428078E4; Thu, 31 Mar 2022 08:35:52 +0000 (UTC) Received: from sirius.home.kraxel.org (unknown [10.39.194.10]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 90D4DC08096; Thu, 31 Mar 2022 08:35:52 +0000 (UTC) Received: by sirius.home.kraxel.org (Postfix, from userid 1000) id 93E421800986; Thu, 31 Mar 2022 10:35:49 +0200 (CEST) From: Gerd Hoffmann To: qemu-devel@nongnu.org Subject: [PATCH 3/3] i386: firmware parsing and sev setup for -bios loaded firmware Date: Thu, 31 Mar 2022 10:35:49 +0200 Message-Id: <20220331083549.749566-4-kraxel@redhat.com> In-Reply-To: <20220331083549.749566-1-kraxel@redhat.com> References: <20220331083549.749566-1-kraxel@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.85 on 10.11.54.8 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=kraxel@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=170.10.133.124; envelope-from=kraxel@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -28 X-Spam_score: -2.9 X-Spam_bar: -- X-Spam_report: (-2.9 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.082, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Eduardo Habkost , "Michael S. Tsirkin" , Xiaoyao Li , Richard Henderson , Gerd Hoffmann , Paolo Bonzini Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Don't register firmware as rom, not needed (see comment). Add x86_firmware_configure() call for proper sev initialization. Signed-off-by: Gerd Hoffmann Tested-by: Xiaoyao Li Reviewed-by: Daniel P. Berrangé Tested-by: Daniel P. Berrangé Reviewed-by: Philippe Mathieu-Daudé --- hw/i386/x86.c | 25 +++++++++++++++++++------ 1 file changed, 19 insertions(+), 6 deletions(-) diff --git a/hw/i386/x86.c b/hw/i386/x86.c index b2e801a8720e..f98483c7fe83 100644 --- a/hw/i386/x86.c +++ b/hw/i386/x86.c @@ -1116,12 +1116,25 @@ void x86_bios_rom_init(MachineState *ms, const char *default_firmware, } bios = g_malloc(sizeof(*bios)); memory_region_init_ram(bios, NULL, "pc.bios", bios_size, &error_fatal); - if (!isapc_ram_fw) { - memory_region_set_readonly(bios, true); - } - ret = rom_add_file_fixed(bios_name, (uint32_t)(-bios_size), -1); - if (ret != 0) { - goto bios_error; + if (sev_enabled()) { + /* + * The concept of a "reset" simply doesn't exist for + * confidential computing guests, we have to destroy and + * re-launch them instead. So there is no need to register + * the firmware as rom to properly re-initialize on reset. + * Just go for a straight file load instead. + */ + void *ptr = memory_region_get_ram_ptr(bios); + load_image_size(filename, ptr, bios_size); + x86_firmware_configure(ptr, bios_size); + } else { + if (!isapc_ram_fw) { + memory_region_set_readonly(bios, true); + } + ret = rom_add_file_fixed(bios_name, (uint32_t)(-bios_size), -1); + if (ret != 0) { + goto bios_error; + } } g_free(filename);