From nobody Tue Feb 10 04:16:27 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=intel.com ARC-Seal: i=1; a=rsa-sha256; t=1618829080; cv=none; d=zohomail.com; s=zohoarc; b=Taqom0//jTEn9iKQ5HReAhnwYvXRmo2p91v6csoRZczhY1p9sourF9mMnwVu8HFe6M6FALFc0gSQtusge0QskaboBPXzc747VPtq+I6O4otq/nW3fT9306hCDDBRVhRCxgwSG3YVsaXvUNLriHhlu3mHyldNstH4rOoe2CVjrfE= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1618829080; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=g6kZn3sCJixQlYxVxdHPGg1PQQrvFabgNfZJI7GTB+A=; b=YY0YAgWFpcR2IQa0QMzUj4rdMFEYu2el4JcJG2eKbcP+J+aR/i48xZnjd9lQ9QzPb/71Aphr51yNCLSxwiwZa8Dd48eZtEIpyZO9Hk+KN0scLnMDO3EFGQ3EkqTJEfyCCtnawYgPMZxdA3k4964biUMl2eZVRF7ZxIf7ejFPSWM= ARC-Authentication-Results: i=1; mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1618829080848580.5641872456363; Mon, 19 Apr 2021 03:44:40 -0700 (PDT) Received: from localhost ([::1]:47740 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lYROR-0003ER-Ao for importer@patchew.org; Mon, 19 Apr 2021 06:44:39 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:33104) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lYR3z-00056y-4M for qemu-devel@nongnu.org; Mon, 19 Apr 2021 06:23:31 -0400 Received: from mga17.intel.com ([192.55.52.151]:24099) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lYR3x-00025K-AP for qemu-devel@nongnu.org; Mon, 19 Apr 2021 06:23:30 -0400 Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Apr 2021 03:23:00 -0700 Received: from icx-2s.bj.intel.com ([10.240.192.119]) by fmsmga008.fm.intel.com with ESMTP; 19 Apr 2021 03:22:59 -0700 IronPort-SDR: lqlZPesf6KZcKnOzMMIJG5Wy+oabixVJIaNIz4FCUAzRX/QGL8mHB79tZGVGXwaAlhGPCRn3qh rbmEOopFoxUg== X-IronPort-AV: E=McAfee;i="6200,9189,9958"; a="175409305" X-IronPort-AV: E=Sophos;i="5.82,233,1613462400"; d="scan'208";a="175409305" IronPort-SDR: gtBxgpJey6bft0aCNRy9wgW+wq0xPlJvphm2F7iW/+FHi83vrADdnGoQd0j03/Ljo6Txls3FIH 44HszqwbozMQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.82,233,1613462400"; d="scan'208";a="419947427" From: Yang Zhong To: qemu-devel@nongnu.org Subject: [PATCH 18/32] hw/i386/pc: Account for SGX EPC sections when calculating device memory Date: Mon, 19 Apr 2021 18:01:42 +0800 Message-Id: <20210419100156.53504-19-yang.zhong@intel.com> X-Mailer: git-send-email 2.29.2.334.gfaefdd61ec In-Reply-To: <20210419100156.53504-1-yang.zhong@intel.com> References: <20210419100156.53504-1-yang.zhong@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=192.55.52.151; envelope-from=yang.zhong@intel.com; helo=mga17.intel.com X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, 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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: yang.zhong@intel.com, pbonzini@redhat.com, kai.huang@intel.com, seanjc@google.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" From: Sean Christopherson Add helpers to detect if SGX EPC exists above 4g, and if so, where SGX EPC above 4g ends. Use the helpers to adjust the device memory range if SGX EPC exists above 4g. For multiple virtual EPC sections, we just put them together physically contiguous for the simplicity because we don't support EPC NUMA affinity now. Once the SGX EPC NUMA support in the kernel SGX driver, we will support this in the future. Note that SGX EPC is currently hardcoded to reside above 4g. Signed-off-by: Sean Christopherson Signed-off-by: Yang Zhong --- hw/i386/pc.c | 11 ++++++++++- include/hw/i386/sgx-epc.h | 12 ++++++++++++ 2 files changed, 22 insertions(+), 1 deletion(-) diff --git a/hw/i386/pc.c b/hw/i386/pc.c index 8a84b25a03..ca8ec072bc 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -925,8 +925,15 @@ void pc_memory_init(PCMachineState *pcms, exit(EXIT_FAILURE); } =20 + if (sgx_epc_above_4g(pcms->sgx_epc)) { + machine->device_memory->base =3D sgx_epc_above_4g_end(pcms->sg= x_epc); + } else { + machine->device_memory->base =3D + 0x100000000ULL + x86ms->above_4g_mem_size; + } + machine->device_memory->base =3D - ROUND_UP(0x100000000ULL + x86ms->above_4g_mem_size, 1 * GiB); + ROUND_UP(machine->device_memory->base, 1 * GiB); =20 if (pcmc->enforce_aligned_dimm) { /* size device region assuming 1G page max alignment per slot = */ @@ -1011,6 +1018,8 @@ uint64_t pc_pci_hole64_start(void) if (!pcmc->broken_reserved_end) { hole64_start +=3D memory_region_size(&ms->device_memory->mr); } + } else if (sgx_epc_above_4g(pcms->sgx_epc)) { + hole64_start =3D sgx_epc_above_4g_end(pcms->sgx_epc); } else { hole64_start =3D 0x100000000ULL + x86ms->above_4g_mem_size; } diff --git a/include/hw/i386/sgx-epc.h b/include/hw/i386/sgx-epc.h index 8d80b34fb7..3d3eab5074 100644 --- a/include/hw/i386/sgx-epc.h +++ b/include/hw/i386/sgx-epc.h @@ -59,4 +59,16 @@ extern int sgx_epc_enabled; =20 int sgx_epc_get_section(int section_nr, uint64_t *addr, uint64_t *size); =20 +static inline bool sgx_epc_above_4g(SGXEPCState *sgx_epc) +{ + return sgx_epc !=3D NULL; +} + +static inline uint64_t sgx_epc_above_4g_end(SGXEPCState *sgx_epc) +{ + assert(sgx_epc !=3D NULL && sgx_epc->base >=3D 0x100000000ULL); + + return sgx_epc->base + sgx_epc->size; +} + #endif --=20 2.29.2.334.gfaefdd61ec