From patchwork Wed Nov 15 07:14:57 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiaoyao Li X-Patchwork-Id: 13456333 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 463F8C07548 for ; Wed, 15 Nov 2023 07:22:41 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1r3ADz-00068G-7g; Wed, 15 Nov 2023 02:22:11 -0500 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 1r3ADv-0005sj-RT for qemu-devel@nongnu.org; Wed, 15 Nov 2023 02:22:07 -0500 Received: from mgamail.intel.com ([192.55.52.115]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1r3ADt-0005ES-V7 for qemu-devel@nongnu.org; Wed, 15 Nov 2023 02:22:07 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1700032925; x=1731568925; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=cbxWEN7AdUzAAcSeAZm3Cpi9cquc6XfjGquydN+R/is=; b=AECcPlW88mBcn7E8TA1NV88UP++Q4UBiU4dEpy92rHUTTKSA5kjzukPI XLFNSFnObziwhlBZpzO5V53/NUQqx+n4xBRSs4xhxi9eTf1X69ASnyB22 PV6NElpNEJpjBJAZ/qQq6YpCld/AwAdqyqwt3O6V0f5nDF5To8PfiJ70E eZ96TxuNVaZaoU5iaqf8/zE7SraXEjOMnyjdK78+uMQw9aPkUDqRxJ6YJ qe6fJH6CdUd0loL+VI1z0j7CCf9itPkFsnsFWOvkGSB3evNOts3tSNeRy 2pcXOw3SQgZ1NaEsGvmeFZK5zQ5rCU0OHJgCpsgSxxwzFzkIWBbTctXlR g==; X-IronPort-AV: E=McAfee;i="6600,9927,10894"; a="390623353" X-IronPort-AV: E=Sophos;i="6.03,304,1694761200"; d="scan'208";a="390623353" Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Nov 2023 23:22:04 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10894"; a="714800137" X-IronPort-AV: E=Sophos;i="6.03,304,1694761200"; d="scan'208";a="714800137" Received: from lxy-clx-4s.sh.intel.com ([10.239.48.52]) by orsmga003.jf.intel.com with ESMTP; 14 Nov 2023 23:21:57 -0800 From: Xiaoyao Li To: Paolo Bonzini , David Hildenbrand , Igor Mammedov , "Michael S . Tsirkin" , Marcel Apfelbaum , Richard Henderson , Peter Xu , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Cornelia Huck , =?utf-8?q?Daniel_P_=2E_Berrang=C3=A9?= , Eric Blake , Markus Armbruster , Marcelo Tosatti Cc: qemu-devel@nongnu.org, kvm@vger.kernel.org, xiaoyao.li@intel.com, Michael Roth , Sean Christopherson , Claudio Fontana , Gerd Hoffmann , Isaku Yamahata , Chenyi Qiang Subject: [PATCH v3 48/70] i386/tdx: register TDVF as private memory Date: Wed, 15 Nov 2023 02:14:57 -0500 Message-Id: <20231115071519.2864957-49-xiaoyao.li@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231115071519.2864957-1-xiaoyao.li@intel.com> References: <20231115071519.2864957-1-xiaoyao.li@intel.com> MIME-Version: 1.0 Received-SPF: pass client-ip=192.55.52.115; envelope-from=xiaoyao.li@intel.com; helo=mgamail.intel.com X-Spam_score_int: -23 X-Spam_score: -2.4 X-Spam_bar: -- X-Spam_report: (-2.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, HK_RANDOM_ENVFROM=0.999, HK_RANDOM_FROM=0.999, RCVD_IN_DNSWL_MED=-2.3, 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: , 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 guest memfd 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 | 10 +++++++++- target/i386/kvm/tdx.c | 18 ++++++++++++++++++ target/i386/kvm/tdx.h | 2 ++ 3 files changed, 29 insertions(+), 1 deletion(-) diff --git a/hw/i386/x86.c b/hw/i386/x86.c index 2f299355a5e3..0f69b55c5219 100644 --- a/hw/i386/x86.c +++ b/hw/i386/x86.c @@ -1146,8 +1146,16 @@ 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_guest_memfd(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 6bb3249fa610..4b8c13890b11 100644 --- a/target/i386/kvm/tdx.c +++ b/target/i386/kvm/tdx.c @@ -21,6 +21,7 @@ #include "sysemu/kvm.h" #include "sysemu/sysemu.h" #include "exec/address-spaces.h" +#include "exec/ramblock.h" #include "hw/i386/e820_memory_layout.h" #include "hw/i386/x86.h" @@ -461,6 +462,12 @@ 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; @@ -582,6 +589,7 @@ 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(); @@ -616,6 +624,12 @@ 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; @@ -631,6 +645,10 @@ 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 3a35a2bc0900..5fb20a5f06bb 100644 --- a/target/i386/kvm/tdx.h +++ b/target/i386/kvm/tdx.h @@ -38,6 +38,7 @@ typedef struct TdxGuest { char *mrownerconfig; /* base64 encoded 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, Error **errp); +void tdx_set_tdvf_region(MemoryRegion *tdvf_region); int tdx_parse_tdvf(void *flash_ptr, int size); #endif /* QEMU_I386_TDX_H */