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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 4E764C71149 for ; Fri, 18 Aug 2023 14:08:57 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qX05a-0004n4-4R; Fri, 18 Aug 2023 10:04:34 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qWwGQ-0004pN-II for qemu-devel@nongnu.org; Fri, 18 Aug 2023 05:59:30 -0400 Received: from mgamail.intel.com ([192.55.52.120]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qWwFj-0000JL-AG for qemu-devel@nongnu.org; Fri, 18 Aug 2023 05:58:50 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1692352727; x=1723888727; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=mRmkkrsbcYl/h4unuPlDa8xITicU6e+dg3FGKV3epRg=; b=MCQviFYabpkiXzofw+/FaUjeKlfVS31ymlbGwhn8ozolnlPt1wRF9y+v Qmd3uOa8iIgS/TTiRKkbLwargU/2UCYOsUmvrfpX/rp+A4KvYOBlKRJ9c q2UrCPqDSX6e8FohbdOVZSYSd73C4LyRZYALSkycXqyZUbfnrk8RvBQWT PjLMvXhRX4JcsqiW2prguhwoVsF5VB02bJWdzQrJhuY1FsVYQGOquhFXM d5/RM5tXgQhxctFJ3orNVa8J6E4yB1ZKvMMfwXfas40gprOdFv2G5fI8c kLyuK5SBTsGKhWCDo28zwdUWAbEzFdAX1KVFwZzsJAh5+Vp1UeBgk+fB4 w==; X-IronPort-AV: E=McAfee;i="6600,9927,10805"; a="371966489" X-IronPort-AV: E=Sophos;i="6.01,182,1684825200"; d="scan'208";a="371966489" Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Aug 2023 02:57:39 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10805"; a="849235419" X-IronPort-AV: E=Sophos;i="6.01,182,1684825200"; d="scan'208";a="849235419" Received: from lxy-clx-4s.sh.intel.com ([10.239.48.46]) by fmsmga002.fm.intel.com with ESMTP; 18 Aug 2023 02:57:34 -0700 From: Xiaoyao Li To: Paolo Bonzini , Richard Henderson , "Michael S. Tsirkin" , Marcel Apfelbaum , Igor Mammedov , Ani Sinha , Peter Xu , David Hildenbrand , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= , Cornelia Huck , Eric Blake , Markus Armbruster , Marcelo Tosatti , Gerd Hoffmann Cc: qemu-devel@nongnu.org, kvm@vger.kernel.org, Eduardo Habkost , Laszlo Ersek , xiaoyao.li@intel.com, Isaku Yamahata , erdemaktas@google.com, Chenyi Qiang Subject: [PATCH v2 37/58] i386/tdx: register TDVF as private memory Date: Fri, 18 Aug 2023 05:50:20 -0400 Message-Id: <20230818095041.1973309-38-xiaoyao.li@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230818095041.1973309-1-xiaoyao.li@intel.com> References: <20230818095041.1973309-1-xiaoyao.li@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=192.55.52.120; envelope-from=xiaoyao.li@intel.com; helo=mgamail.intel.com X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.021, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, HK_RANDOM_ENVFROM=0.001, HK_RANDOM_FROM=0.001, 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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Chao Peng Allocate private gmem memory for BIOS if it's TD VM. Signed-off-by: Chao Peng Co-developed-by: Xiaoyao Li Signed-off-by: Xiaoyao Li --- hw/i386/x86.c | 9 ++++++++- target/i386/kvm/tdx.c | 17 +++++++++++++++++ target/i386/kvm/tdx.h | 2 ++ 3 files changed, 27 insertions(+), 1 deletion(-) diff --git a/hw/i386/x86.c b/hw/i386/x86.c index e2a1369e5dfc..a0c9f4d646e2 100644 --- a/hw/i386/x86.c +++ b/hw/i386/x86.c @@ -1151,8 +1151,15 @@ void x86_bios_rom_init(MachineState *ms, const char *default_firmware, (bios_size % 65536) != 0) { goto bios_error; } + bios = g_malloc(sizeof(*bios)); - memory_region_init_ram(bios, NULL, "pc.bios", bios_size, &error_fatal); + if (is_tdx_vm()) { + memory_region_init_ram_gmem(bios, NULL, "pc.bios", bios_size, &error_fatal); + tdx_set_tdvf_region(bios); + } else { + memory_region_init_ram(bios, NULL, "pc.bios", bios_size, &error_fatal); + } + if (sev_enabled() || is_tdx_vm()) { /* * The concept of a "reset" simply doesn't exist for diff --git a/target/i386/kvm/tdx.c b/target/i386/kvm/tdx.c index 37ff0f4eea11..5b688eb39327 100644 --- a/target/i386/kvm/tdx.c +++ b/target/i386/kvm/tdx.c @@ -456,6 +456,12 @@ static void update_tdx_cpuid_lookup_by_tdx_caps(void) (tdx_caps->xfam_fixed1 & CPUID_XSTATE_XSS_MASK) >> 32; } +void tdx_set_tdvf_region(MemoryRegion *tdvf_region) +{ + assert(!tdx_guest->tdvf_region); + tdx_guest->tdvf_region = tdvf_region; +} + static TdxFirmwareEntry *tdx_get_hob_entry(TdxGuest *tdx) { TdxFirmwareEntry *entry; @@ -576,6 +582,7 @@ static void tdx_finalize_vm(Notifier *notifier, void *unused) { TdxFirmware *tdvf = &tdx_guest->tdvf; TdxFirmwareEntry *entry; + RAMBlock *ram_block; int r; tdx_init_ram_entries(); @@ -610,6 +617,12 @@ static void tdx_finalize_vm(Notifier *notifier, void *unused) .nr_pages = entry->size / 4096, }; + r = kvm_set_memory_attributes_private(entry->address, entry->size); + if (r < 0) { + error_report("Reserve initial private memory failed %s", strerror(-r)); + exit(1); + } + __u32 flags = entry->attributes & TDVF_SECTION_ATTRIBUTES_MR_EXTEND ? KVM_TDX_MEASURE_MEMORY_REGION : 0; @@ -625,6 +638,10 @@ static void tdx_finalize_vm(Notifier *notifier, void *unused) entry->mem_ptr = NULL; } } + + /* Tdvf image was copied into private region above. It becomes unnecessary. */ + ram_block = tdx_guest->tdvf_region->ram_block; + ram_block_discard_range(ram_block, 0, ram_block->max_length); } static Notifier tdx_machine_done_notify = { diff --git a/target/i386/kvm/tdx.h b/target/i386/kvm/tdx.h index 9b3c427766ef..1c444b6cdb3f 100644 --- a/target/i386/kvm/tdx.h +++ b/target/i386/kvm/tdx.h @@ -38,6 +38,7 @@ typedef struct TdxGuest { uint8_t mrownerconfig[48]; /* sha348 digest */ TdxFirmware tdvf; + MemoryRegion *tdvf_region; uint32_t nr_ram_entries; TdxRamEntry *ram_entries; @@ -53,6 +54,7 @@ int tdx_kvm_init(MachineState *ms, Error **errp); void tdx_get_supported_cpuid(uint32_t function, uint32_t index, int reg, uint32_t *ret); int tdx_pre_create_vcpu(CPUState *cpu); +void tdx_set_tdvf_region(MemoryRegion *tdvf_region); int tdx_parse_tdvf(void *flash_ptr, int size); #endif /* QEMU_I386_TDX_H */ -- 2.34.1