Patch Detail
get:
Show a patch.
patch:
Update a patch.
put:
Update a patch.
GET /api/patches/2195678/?format=api
{ "id": 2195678, "url": "http://patchwork.ozlabs.org/api/patches/2195678/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260211155410.203883-4-magnuskulke@linux.microsoft.com/", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/projects/14/?format=api", "name": "QEMU Development", "link_name": "qemu-devel", "list_id": "qemu-devel.nongnu.org", "list_email": "qemu-devel@nongnu.org", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260211155410.203883-4-magnuskulke@linux.microsoft.com>", "list_archive_url": null, "date": "2026-02-11T15:54:03", "name": "[03/10] accel/mshv: use mshv_create_partition_v2 payload", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "863bfedff737bfb35ca93557d6a59d906487f9e6", "submitter": { "id": 90753, "url": "http://patchwork.ozlabs.org/api/people/90753/?format=api", "name": "Magnus Kulke", "email": "magnuskulke@linux.microsoft.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260211155410.203883-4-magnuskulke@linux.microsoft.com/mbox/", "series": [ { "id": 491871, "url": "http://patchwork.ozlabs.org/api/series/491871/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=491871", "date": "2026-02-11T15:54:00", "name": "Support QEMU cpu models in MSHV accelerator", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/491871/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2195678/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2195678/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=linux.microsoft.com header.i=@linux.microsoft.com\n header.a=rsa-sha256 header.s=default header.b=J7rl/BQx;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; helo=lists.gnu.org;\n envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n receiver=patchwork.ozlabs.org)" ], "Received": [ "from lists.gnu.org (lists.gnu.org [209.51.188.17])\n\t(using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4fB3JL0y22z1xtV\n\tfor <incoming@patchwork.ozlabs.org>; Thu, 12 Feb 2026 03:08:34 +1100 (AEDT)", "from localhost ([::1] helo=lists1p.gnu.org)\n\tby lists.gnu.org with esmtp (Exim 4.90_1)\n\t(envelope-from <qemu-devel-bounces@nongnu.org>)\n\tid 1vqCkh-0002pu-7M; Wed, 11 Feb 2026 11:07:43 -0500", "from eggs.gnu.org ([2001:470:142:3::10])\n by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)\n (Exim 4.90_1) (envelope-from <magnuskulke@linux.microsoft.com>)\n id 1vqCXp-0007Dn-CT\n for qemu-devel@nongnu.org; Wed, 11 Feb 2026 10:54:25 -0500", "from linux.microsoft.com ([13.77.154.182])\n by eggs.gnu.org with esmtp (Exim 4.90_1)\n (envelope-from <magnuskulke@linux.microsoft.com>) id 1vqCXn-0003QP-FX\n for qemu-devel@nongnu.org; Wed, 11 Feb 2026 10:54:25 -0500", "from DESKTOP-TUU1E5L.localdomain (unknown [167.220.208.59])\n by linux.microsoft.com (Postfix) with ESMTPSA id A7FEA20B716A;\n Wed, 11 Feb 2026 07:54:20 -0800 (PST)" ], "DKIM-Filter": "OpenDKIM Filter v2.11.0 linux.microsoft.com A7FEA20B716A", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com;\n s=default; t=1770825262;\n bh=4I9lmLORCr+NoAh4zAx7PDJ3LLuGZqTYbC/uA6RwjRU=;\n h=From:To:Cc:Subject:Date:In-Reply-To:References:From;\n b=J7rl/BQx23vCdXub8g5P2a1jEz5yP1xLcshGAx5j9AdgDSNp3RI4nmxq7qnbDpA0w\n v8Z86babBCgabD56SNcTD9eAmjshfNkI5WZMk/LqH53mFCEh12Z+XQCq/sRicvC6GK\n BZW2PcuZ0p0CxGs4NFvyFN6oYeilVvOfxAj9GRDE=", "From": "Magnus Kulke <magnuskulke@linux.microsoft.com>", "To": "qemu-devel@nongnu.org", "Cc": "Magnus Kulke <magnuskulke@linux.microsoft.com>,\n Wei Liu <liuwe@microsoft.com>, Wei Liu <wei.liu@kernel.org>,\n Zhao Liu <zhao1.liu@intel.com>, Paolo Bonzini <pbonzini@redhat.com>,\n Magnus Kulke <magnuskulke@microsoft.com>", "Subject": "[PATCH 03/10] accel/mshv: use mshv_create_partition_v2 payload", "Date": "Wed, 11 Feb 2026 16:54:03 +0100", "Message-Id": "<20260211155410.203883-4-magnuskulke@linux.microsoft.com>", "X-Mailer": "git-send-email 2.34.1", "In-Reply-To": "<20260211155410.203883-1-magnuskulke@linux.microsoft.com>", "References": "<20260211155410.203883-1-magnuskulke@linux.microsoft.com>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Received-SPF": "pass client-ip=13.77.154.182;\n envelope-from=magnuskulke@linux.microsoft.com; helo=linux.microsoft.com", "X-Spam_score_int": "-19", "X-Spam_score": "-2.0", "X-Spam_bar": "--", "X-Spam_report": "(-2.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1,\n DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_NONE=-0.0001,\n RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001,\n SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no", "X-Spam_action": "no action", "X-Mailman-Approved-At": "Wed, 11 Feb 2026 11:07:30 -0500", "X-BeenThere": "qemu-devel@nongnu.org", "X-Mailman-Version": "2.1.29", "Precedence": "list", "List-Id": "qemu development <qemu-devel.nongnu.org>", "List-Unsubscribe": "<https://lists.nongnu.org/mailman/options/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>", "List-Archive": "<https://lists.nongnu.org/archive/html/qemu-devel>", "List-Post": "<mailto:qemu-devel@nongnu.org>", "List-Help": "<mailto:qemu-devel-request@nongnu.org?subject=help>", "List-Subscribe": "<https://lists.nongnu.org/mailman/listinfo/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=subscribe>", "Errors-To": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org", "Sender": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org" }, "content": "When using the extended request format we can instruct the hypervisor to\nprovision enough space for requested XSAVE features. This is required\nfor supporting QEMU models provided via the -cpu flag properly.\n\nSigned-off-by: Magnus Kulke <magnuskulke@linux.microsoft.com>\n---\n accel/mshv/mshv-all.c | 35 +++++--\n include/hw/hyperv/hvgdk_mini.h | 2 +\n include/hw/hyperv/hvhdk.h | 185 +++++++++++++++++++++++++++++++++\n 3 files changed, 214 insertions(+), 8 deletions(-)", "diff": "diff --git a/accel/mshv/mshv-all.c b/accel/mshv/mshv-all.c\nindex bed0fa298e..8446f7128a 100644\n--- a/accel/mshv/mshv-all.c\n+++ b/accel/mshv/mshv-all.c\n@@ -112,19 +112,38 @@ static int resume_vm(int vm_fd)\n \n static int create_partition(int mshv_fd, int *vm_fd)\n {\n- int ret;\n- struct mshv_create_partition args = {0};\n+ int ret, i;\n+ uint64_t pt_flags;\n+ union hv_partition_processor_xsave_features disabled_xsave_features;\n+ union hv_partition_processor_features disabled_processor_features;\n+ struct mshv_create_partition_v2 args = {0};\n \n /* Initialize pt_flags with the desired features */\n- uint64_t pt_flags = (1ULL << MSHV_PT_BIT_LAPIC) |\n- (1ULL << MSHV_PT_BIT_X2APIC) |\n- (1ULL << MSHV_PT_BIT_GPA_SUPER_PAGES);\n+ pt_flags = (1ULL << MSHV_PT_BIT_LAPIC) |\n+ (1ULL << MSHV_PT_BIT_X2APIC) |\n+ (1ULL << MSHV_PT_BIT_GPA_SUPER_PAGES) |\n+ (1ULL << MSHV_PT_BIT_CPU_AND_XSAVE_FEATURES);\n \n- /* Set default isolation type */\n- uint64_t pt_isolation = MSHV_PT_ISOLATION_NONE;\n+ /* enable all */\n+ disabled_xsave_features.as_uint64 = 0;\n \n+ /* Enable all proc features by default */\n+ for (i = 0; i < MSHV_NUM_CPU_FEATURES_BANKS; i++) {\n+ disabled_processor_features.as_uint64[i] = 0;\n+ }\n+ disabled_processor_features.reserved_bank0 = 1;\n+ for (i = 0; i < MSHV_NUM_CPU_FEATURES_BANKS; i++) {\n+ disabled_processor_features.as_uint64[i] = 0;\n+ }\n+\n+ /* populate args structure */\n args.pt_flags = pt_flags;\n- args.pt_isolation = pt_isolation;\n+ args.pt_isolation = MSHV_PT_ISOLATION_NONE;\n+ args.pt_disabled_xsave = disabled_xsave_features.as_uint64;\n+ args.pt_num_cpu_fbanks = MSHV_NUM_CPU_FEATURES_BANKS;\n+ for (i = 0; i < MSHV_NUM_CPU_FEATURES_BANKS; i++) {\n+ args.pt_cpu_fbanks[i] = disabled_processor_features.as_uint64[i];\n+ }\n \n ret = ioctl(mshv_fd, MSHV_CREATE_PARTITION, &args);\n if (ret < 0) {\ndiff --git a/include/hw/hyperv/hvgdk_mini.h b/include/hw/hyperv/hvgdk_mini.h\nindex 7d7b2e9b36..a8d4b2b2b1 100644\n--- a/include/hw/hyperv/hvgdk_mini.h\n+++ b/include/hw/hyperv/hvgdk_mini.h\n@@ -456,6 +456,8 @@ typedef struct hv_input_set_vp_registers {\n struct hv_register_assoc elements[];\n } QEMU_PACKED hv_input_set_vp_registers;\n \n+#define MSHV_VP_MAX_REGISTERS 128\n+\n union hv_interrupt_control {\n uint64_t as_uint64;\n struct {\ndiff --git a/include/hw/hyperv/hvhdk.h b/include/hw/hyperv/hvhdk.h\nindex bf2f8cbc27..83f12a8781 100644\n--- a/include/hw/hyperv/hvhdk.h\n+++ b/include/hw/hyperv/hvhdk.h\n@@ -163,6 +163,191 @@ union hv_partition_synthetic_processor_features {\n };\n };\n \n+union hv_partition_processor_xsave_features {\n+ struct {\n+ uint64_t xsave_support:1;\n+ uint64_t xsaveopt_support:1;\n+ uint64_t avx_support:1;\n+ uint64_t avx2_support:1;\n+ uint64_t fma_support:1;\n+ uint64_t mpx_support:1;\n+ uint64_t avx512_support:1;\n+ uint64_t avx512_dq_support:1;\n+ uint64_t avx512_cd_support:1;\n+ uint64_t avx512_bw_support:1;\n+ uint64_t avx512_vl_support:1;\n+ uint64_t xsave_comp_support:1;\n+ uint64_t xsave_supervisor_support:1;\n+ uint64_t xcr1_support:1;\n+ uint64_t avx512_bitalg_support:1;\n+ uint64_t avx512_i_fma_support:1;\n+ uint64_t avx512_v_bmi_support:1;\n+ uint64_t avx512_v_bmi2_support:1;\n+ uint64_t avx512_vnni_support:1;\n+ uint64_t gfni_support:1;\n+ uint64_t vaes_support:1;\n+ uint64_t avx512_v_popcntdq_support:1;\n+ uint64_t vpclmulqdq_support:1;\n+ uint64_t avx512_bf16_support:1;\n+ uint64_t avx512_vp2_intersect_support:1;\n+ uint64_t avx512_fp16_support:1;\n+ uint64_t xfd_support:1;\n+ uint64_t amx_tile_support:1;\n+ uint64_t amx_bf16_support:1;\n+ uint64_t amx_int8_support:1;\n+ uint64_t avx_vnni_support:1;\n+ uint64_t avx_ifma_support:1;\n+ uint64_t avx_ne_convert_support:1;\n+ uint64_t avx_vnni_int8_support:1;\n+ uint64_t avx_vnni_int16_support:1;\n+ uint64_t avx10_1_256_support:1;\n+ uint64_t avx10_1_512_support:1;\n+ uint64_t amx_fp16_support:1;\n+ uint64_t reserved1:26;\n+ };\n+ uint64_t as_uint64;\n+};\n+\n+#define HV_PARTITION_PROCESSOR_FEATURES_BANKS 2\n+#define HV_PARTITION_PROCESSOR_FEATURES_RESERVEDBANK1_BITFIELD_COUNT 4\n+\n+\n+union hv_partition_processor_features {\n+ uint64_t as_uint64[HV_PARTITION_PROCESSOR_FEATURES_BANKS];\n+ struct {\n+ uint64_t sse3_support:1;\n+ uint64_t lahf_sahf_support:1;\n+ uint64_t ssse3_support:1;\n+ uint64_t sse4_1_support:1;\n+ uint64_t sse4_2_support:1;\n+ uint64_t sse4a_support:1;\n+ uint64_t xop_support:1;\n+ uint64_t pop_cnt_support:1;\n+ uint64_t cmpxchg16b_support:1;\n+ uint64_t altmovcr8_support:1;\n+ uint64_t lzcnt_support:1;\n+ uint64_t mis_align_sse_support:1;\n+ uint64_t mmx_ext_support:1;\n+ uint64_t amd3dnow_support:1;\n+ uint64_t extended_amd3dnow_support:1;\n+ uint64_t page_1gb_support:1;\n+ uint64_t aes_support:1;\n+ uint64_t pclmulqdq_support:1;\n+ uint64_t pcid_support:1;\n+ uint64_t fma4_support:1;\n+ uint64_t f16c_support:1;\n+ uint64_t rd_rand_support:1;\n+ uint64_t rd_wr_fs_gs_support:1;\n+ uint64_t smep_support:1;\n+ uint64_t enhanced_fast_string_support:1;\n+ uint64_t bmi1_support:1;\n+ uint64_t bmi2_support:1;\n+ uint64_t hle_support_deprecated:1;\n+ uint64_t rtm_support_deprecated:1;\n+ uint64_t movbe_support:1;\n+ uint64_t npiep1_support:1;\n+ uint64_t dep_x87_fpu_save_support:1;\n+ uint64_t rd_seed_support:1;\n+ uint64_t adx_support:1;\n+ uint64_t intel_prefetch_support:1;\n+ uint64_t smap_support:1;\n+ uint64_t hle_support:1;\n+ uint64_t rtm_support:1;\n+ uint64_t rdtscp_support:1;\n+ uint64_t clflushopt_support:1;\n+ uint64_t clwb_support:1;\n+ uint64_t sha_support:1;\n+ uint64_t x87_pointers_saved_support:1;\n+ uint64_t invpcid_support:1;\n+ uint64_t ibrs_support:1;\n+ uint64_t stibp_support:1;\n+ uint64_t ibpb_support:1;\n+ uint64_t unrestricted_guest_support:1;\n+ uint64_t mdd_support:1;\n+ uint64_t fast_short_rep_mov_support:1;\n+ uint64_t l1dcache_flush_support:1;\n+ uint64_t rdcl_no_support:1;\n+ uint64_t ibrs_all_support:1;\n+ uint64_t skip_l1df_support:1;\n+ uint64_t ssb_no_support:1;\n+ uint64_t rsb_a_no_support:1;\n+ uint64_t virt_spec_ctrl_support:1;\n+ uint64_t rd_pid_support:1;\n+ uint64_t umip_support:1;\n+ uint64_t mbs_no_support:1;\n+ uint64_t mb_clear_support:1;\n+ uint64_t taa_no_support:1;\n+ uint64_t tsx_ctrl_support:1;\n+ uint64_t reserved_bank0:1;\n+\n+ /* N.B. Begin bank 1 processor features. */\n+ uint64_t a_count_m_count_support:1;\n+ uint64_t tsc_invariant_support:1;\n+ uint64_t cl_zero_support:1;\n+ uint64_t rdpru_support:1;\n+ uint64_t la57_support:1;\n+ uint64_t mbec_support:1;\n+ uint64_t nested_virt_support:1;\n+ uint64_t psfd_support:1;\n+ uint64_t cet_ss_support:1;\n+ uint64_t cet_ibt_support:1;\n+ uint64_t vmx_exception_inject_support:1;\n+ uint64_t enqcmd_support:1;\n+ uint64_t umwait_tpause_support:1;\n+ uint64_t movdiri_support:1;\n+ uint64_t movdir64b_support:1;\n+ uint64_t cldemote_support:1;\n+ uint64_t serialize_support:1;\n+ uint64_t tsc_deadline_tmr_support:1;\n+ uint64_t tsc_adjust_support:1;\n+ uint64_t fzl_rep_movsb:1;\n+ uint64_t fs_rep_stosb:1;\n+ uint64_t fs_rep_cmpsb:1;\n+ uint64_t tsx_ld_trk_support:1;\n+ uint64_t vmx_ins_outs_exit_info_support:1;\n+ uint64_t hlat_support:1;\n+ uint64_t sbdr_ssdp_no_support:1;\n+ uint64_t fbsdp_no_support:1;\n+ uint64_t psdp_no_support:1;\n+ uint64_t fb_clear_support:1;\n+ uint64_t btc_no_support:1;\n+ uint64_t ibpb_rsb_flush_support:1;\n+ uint64_t stibp_always_on_support:1;\n+ uint64_t perf_global_ctrl_support:1;\n+ uint64_t npt_execute_only_support:1;\n+ uint64_t npt_ad_flags_support:1;\n+ uint64_t npt1_gb_page_support:1;\n+ uint64_t amd_processor_topology_node_id_support:1;\n+ uint64_t local_machine_check_support:1;\n+ uint64_t extended_topology_leaf_fp256_amd_support:1;\n+ uint64_t gds_no_support:1;\n+ uint64_t cmpccxadd_support:1;\n+ uint64_t tsc_aux_virtualization_support:1;\n+ uint64_t rmp_query_support:1;\n+ uint64_t bhi_no_support:1;\n+ uint64_t bhi_dis_support:1;\n+ uint64_t prefetch_i_support:1;\n+ uint64_t sha512_support:1;\n+ uint64_t mitigation_ctrl_support:1;\n+ uint64_t rfds_no_support:1;\n+ uint64_t rfds_clear_support:1;\n+ uint64_t sm3_support:1;\n+ uint64_t sm4_support:1;\n+ uint64_t secure_avic_support:1;\n+ uint64_t guest_intercept_ctrl_support:1;\n+ uint64_t sbpb_supported:1;\n+ uint64_t ibpb_br_type_supported:1;\n+ uint64_t srso_no_supported:1;\n+ uint64_t srso_user_kernel_no_supported:1;\n+ uint64_t vrew_clear_supported:1;\n+ uint64_t tsa_l1_no_supported:1;\n+ uint64_t tsa_sq_no_supported:1;\n+ uint64_t lass_support:1;\n+ uint64_t idle_hlt_intercept_support:1;\n+ uint64_t msr_list_support:1;\n+ };\n+};\n+\n enum hv_translate_gva_result_code {\n HV_TRANSLATE_GVA_SUCCESS = 0,\n \n", "prefixes": [ "03/10" ] }