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GET /api/patches/2217074/?format=api
{ "id": 2217074, "url": "http://patchwork.ozlabs.org/api/patches/2217074/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-pci/patch/20260327160132.2946114-30-yilun.xu@linux.intel.com/", "project": { "id": 28, "url": "http://patchwork.ozlabs.org/api/projects/28/?format=api", "name": "Linux PCI development", "link_name": "linux-pci", "list_id": "linux-pci.vger.kernel.org", "list_email": "linux-pci@vger.kernel.org", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260327160132.2946114-30-yilun.xu@linux.intel.com>", "list_archive_url": null, "date": "2026-03-27T16:01:30", "name": "[v2,29/31] x86/virt/tdx: Add SEAMCALL wrappers for IDE stream management", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "530af8cddcc6c5f9a7ff2c04dc6c6d0c35fadd62", "submitter": { "id": 87470, "url": "http://patchwork.ozlabs.org/api/people/87470/?format=api", "name": "Xu Yilun", "email": "yilun.xu@linux.intel.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-pci/patch/20260327160132.2946114-30-yilun.xu@linux.intel.com/mbox/", "series": [ { "id": 497793, "url": "http://patchwork.ozlabs.org/api/series/497793/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-pci/list/?series=497793", "date": "2026-03-27T16:01:02", "name": "PCI/TSM: PCIe Link Encryption Establishment via TDX platform services", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/497793/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2217074/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2217074/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linux-pci+bounces-51315-incoming=patchwork.ozlabs.org@vger.kernel.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linux-pci@vger.kernel.org" ], "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=intel.com header.i=@intel.com header.a=rsa-sha256\n header.s=Intel header.b=hX20DsvX;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c04:e001:36c::12fc:5321; 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a=\"79565694\"", "E=Sophos;i=\"6.23,144,1770624000\";\n d=\"scan'208\";a=\"79565694\"", "E=Sophos;i=\"6.23,144,1770624000\";\n d=\"scan'208\";a=\"220516389\"" ], "X-ExtLoop1": "1", "From": "Xu Yilun <yilun.xu@linux.intel.com>", "To": "linux-coco@lists.linux.dev,\n\tlinux-pci@vger.kernel.org,\n\tdan.j.williams@intel.com,\n\tx86@kernel.org", "Cc": "chao.gao@intel.com,\n\tdave.jiang@intel.com,\n\tbaolu.lu@linux.intel.com,\n\tyilun.xu@linux.intel.com,\n\tyilun.xu@intel.com,\n\tzhenzhong.duan@intel.com,\n\tkvm@vger.kernel.org,\n\trick.p.edgecombe@intel.com,\n\tdave.hansen@linux.intel.com,\n\tkas@kernel.org,\n\txiaoyao.li@intel.com,\n\tvishal.l.verma@intel.com,\n\tlinux-kernel@vger.kernel.org", "Subject": "[PATCH v2 29/31] x86/virt/tdx: Add SEAMCALL wrappers for IDE stream\n management", "Date": "Sat, 28 Mar 2026 00:01:30 +0800", "Message-Id": "<20260327160132.2946114-30-yilun.xu@linux.intel.com>", "X-Mailer": "git-send-email 2.25.1", "In-Reply-To": "<20260327160132.2946114-1-yilun.xu@linux.intel.com>", "References": "<20260327160132.2946114-1-yilun.xu@linux.intel.com>", "Precedence": "bulk", "X-Mailing-List": "linux-pci@vger.kernel.org", "List-Id": "<linux-pci.vger.kernel.org>", "List-Subscribe": "<mailto:linux-pci+subscribe@vger.kernel.org>", "List-Unsubscribe": "<mailto:linux-pci+unsubscribe@vger.kernel.org>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit" }, "content": "Add several SEAMCALL wrappers for IDE stream management.\n\n- TDH.IDE.STREAM.CREATE creates IDE stream metadata buffers for TDX\n Module, and does root port side IDE configuration.\n- TDH.IDE.STREAM.BLOCK clears the root port side IDE configuration.\n- TDH.IDE.STREAM.DELETE releases the IDE stream metadata buffers.\n- TDH.IDE.STREAM.KM deals with the IDE Key Management protocol (IDE-KM)\n\nMore information see Intel TDX Connect ABI Specification [1]\nSection 3.2 TDX Connect Host-Side (SEAMCALL) Interface Functions.\n\n[1]: https://cdrdv2.intel.com/v1/dl/getContent/858625\n\nSigned-off-by: Xu Yilun <yilun.xu@linux.intel.com>\n---\n arch/x86/include/asm/tdx.h | 14 ++++++\n arch/x86/virt/vmx/tdx/tdx.h | 4 ++\n arch/x86/virt/vmx/tdx/tdx.c | 86 +++++++++++++++++++++++++++++++++++++\n 3 files changed, 104 insertions(+)", "diff": "diff --git a/arch/x86/include/asm/tdx.h b/arch/x86/include/asm/tdx.h\nindex 8abdad084972..7bdd66acda5b 100644\n--- a/arch/x86/include/asm/tdx.h\n+++ b/arch/x86/include/asm/tdx.h\n@@ -260,6 +260,20 @@ u64 tdh_exec_spdm_mng(u64 spdm_id, u64 spdm_op, struct page *spdm_param,\n \t\t struct page *spdm_rsp, struct page *spdm_req,\n \t\t struct tdx_page_array *spdm_out,\n \t\t u64 *spdm_req_or_out_len);\n+u64 tdh_ide_stream_create(u64 stream_info, u64 spdm_id,\n+\t\t\t struct tdx_page_array *stream_mt, u64 stream_ctrl,\n+\t\t\t u64 rid_assoc1, u64 rid_assoc2,\n+\t\t\t u64 addr_assoc1, u64 addr_assoc2,\n+\t\t\t u64 addr_assoc3,\n+\t\t\t u64 *stream_id,\n+\t\t\t u64 *rp_ide_id);\n+u64 tdh_ide_stream_block(u64 spdm_id, u64 stream_id);\n+u64 tdh_ide_stream_delete(u64 spdm_id, u64 stream_id,\n+\t\t\t struct tdx_page_array *stream_mt,\n+\t\t\t unsigned int *nr_released, u64 *released_hpa);\n+u64 tdh_ide_stream_km(u64 spdm_id, u64 stream_id, u64 operation,\n+\t\t struct page *spdm_rsp, struct page *spdm_req,\n+\t\t u64 *spdm_req_len);\n #else\n static inline void tdx_init(void) { }\n static inline int tdx_cpu_enable(void) { return -ENODEV; }\ndiff --git a/arch/x86/virt/vmx/tdx/tdx.h b/arch/x86/virt/vmx/tdx/tdx.h\nindex 4784db2d1d92..d0a9694432de 100644\n--- a/arch/x86/virt/vmx/tdx/tdx.h\n+++ b/arch/x86/virt/vmx/tdx/tdx.h\n@@ -66,6 +66,10 @@\n #define TDH_IOMMU_CLEAR\t\t\t129\n #define TDH_SPDM_CREATE\t\t\t130\n #define TDH_SPDM_DELETE\t\t\t131\n+#define TDH_IDE_STREAM_CREATE\t\t132\n+#define TDH_IDE_STREAM_BLOCK\t\t133\n+#define TDH_IDE_STREAM_DELETE\t\t134\n+#define TDH_IDE_STREAM_KM\t\t135\n #define TDH_SPDM_CONNECT\t\t142\n #define TDH_SPDM_DISCONNECT\t\t143\n #define TDH_SPDM_MNG\t\t\t144\ndiff --git a/arch/x86/virt/vmx/tdx/tdx.c b/arch/x86/virt/vmx/tdx/tdx.c\nindex 02882c2ad177..72d836b25bd6 100644\n--- a/arch/x86/virt/vmx/tdx/tdx.c\n+++ b/arch/x86/virt/vmx/tdx/tdx.c\n@@ -2616,3 +2616,89 @@ u64 tdh_exec_spdm_mng(u64 spdm_id, u64 spdm_op, struct page *spdm_param,\n \treturn r;\n }\n EXPORT_SYMBOL_FOR_MODULES(tdh_exec_spdm_mng, \"tdx-host\");\n+\n+u64 tdh_ide_stream_create(u64 stream_info, u64 spdm_id,\n+\t\t\t struct tdx_page_array *stream_mt, u64 stream_ctrl,\n+\t\t\t u64 rid_assoc1, u64 rid_assoc2,\n+\t\t\t u64 addr_assoc1, u64 addr_assoc2,\n+\t\t\t u64 addr_assoc3,\n+\t\t\t u64 *stream_id,\n+\t\t\t u64 *rp_ide_id)\n+{\n+\tstruct tdx_module_args args = {\n+\t\t.rcx = stream_info,\n+\t\t.rdx = spdm_id,\n+\t\t.r8 = hpa_array_t_assign_raw(stream_mt),\n+\t\t.r9 = stream_ctrl,\n+\t\t.r10 = rid_assoc1,\n+\t\t.r11 = rid_assoc2,\n+\t\t.r12 = addr_assoc1,\n+\t\t.r13 = addr_assoc2,\n+\t\t.r14 = addr_assoc3,\n+\t};\n+\tu64 r;\n+\n+\ttdx_clflush_page_array(stream_mt);\n+\n+\tr = seamcall_saved_ret(TDH_IDE_STREAM_CREATE, &args);\n+\n+\t*stream_id = args.rcx;\n+\t*rp_ide_id = args.rdx;\n+\n+\treturn r;\n+}\n+EXPORT_SYMBOL_FOR_MODULES(tdh_ide_stream_create, \"tdx-host\");\n+\n+u64 tdh_ide_stream_block(u64 spdm_id, u64 stream_id)\n+{\n+\tstruct tdx_module_args args = {\n+\t\t.rcx = spdm_id,\n+\t\t.rdx = stream_id,\n+\t};\n+\n+\treturn seamcall(TDH_IDE_STREAM_BLOCK, &args);\n+}\n+EXPORT_SYMBOL_FOR_MODULES(tdh_ide_stream_block, \"tdx-host\");\n+\n+u64 tdh_ide_stream_delete(u64 spdm_id, u64 stream_id,\n+\t\t\t struct tdx_page_array *stream_mt,\n+\t\t\t unsigned int *nr_released, u64 *released_hpa)\n+{\n+\tstruct tdx_module_args args = {\n+\t\t.rcx = spdm_id,\n+\t\t.rdx = stream_id,\n+\t\t.r8 = hpa_array_t_release_raw(stream_mt),\n+\t};\n+\tu64 r;\n+\n+\tr = seamcall_ret(TDH_IDE_STREAM_DELETE, &args);\n+\tif (r != TDX_SUCCESS)\n+\t\treturn r;\n+\n+\t*nr_released = FIELD_GET(HPA_ARRAY_T_SIZE, args.rcx) + 1;\n+\t*released_hpa = FIELD_GET(HPA_ARRAY_T_PFN, args.rcx) << PAGE_SHIFT;\n+\n+\treturn r;\n+}\n+EXPORT_SYMBOL_FOR_MODULES(tdh_ide_stream_delete, \"tdx-host\");\n+\n+u64 tdh_ide_stream_km(u64 spdm_id, u64 stream_id, u64 operation,\n+\t\t struct page *spdm_rsp, struct page *spdm_req,\n+\t\t u64 *spdm_req_len)\n+{\n+\tstruct tdx_module_args args = {\n+\t\t.rcx = spdm_id,\n+\t\t.rdx = stream_id,\n+\t\t.r8 = operation,\n+\t\t.r9 = page_to_phys(spdm_rsp),\n+\t\t.r10 = page_to_phys(spdm_req),\n+\t};\n+\tu64 r;\n+\n+\tr = seamcall_ret_ir_resched(TDH_IDE_STREAM_KM, &args);\n+\n+\t*spdm_req_len = args.rcx;\n+\n+\treturn r;\n+}\n+EXPORT_SYMBOL_FOR_MODULES(tdh_ide_stream_km, \"tdx-host\");\n", "prefixes": [ "v2", "29/31" ] }