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{
    "id": 813236,
    "url": "http://patchwork.ozlabs.org/api/patches/813236/?format=api",
    "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20170913090522.4022-4-Sergio.G.DelReal@gmail.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": "<20170913090522.4022-4-Sergio.G.DelReal@gmail.com>",
    "list_archive_url": null,
    "date": "2017-09-13T09:05:11",
    "name": "[v4,03/14] hvf: fix licensing issues; isolate task handling code (GPL v2-only)",
    "commit_ref": null,
    "pull_url": null,
    "state": "new",
    "archived": false,
    "hash": "0d275cf67510efd255e508517825ce1e0300daaa",
    "submitter": {
        "id": 70675,
        "url": "http://patchwork.ozlabs.org/api/people/70675/?format=api",
        "name": "Sergio Andres Gomez Del Real",
        "email": "sergio.g.delreal@gmail.com"
    },
    "delegate": null,
    "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20170913090522.4022-4-Sergio.G.DelReal@gmail.com/mbox/",
    "series": [
        {
            "id": 2843,
            "url": "http://patchwork.ozlabs.org/api/series/2843/?format=api",
            "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=2843",
            "date": "2017-09-13T09:05:08",
            "name": "add support for Hypervisor.framework in QEMU",
            "version": 4,
            "mbox": "http://patchwork.ozlabs.org/series/2843/mbox/"
        }
    ],
    "comments": "http://patchwork.ozlabs.org/api/patches/813236/comments/",
    "check": "pending",
    "checks": "http://patchwork.ozlabs.org/api/patches/813236/checks/",
    "tags": {},
    "related": [],
    "headers": {
        "Return-Path": "<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>",
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            "from eggs.gnu.org ([2001:4830:134:3::10]:33978)\n\tby lists.gnu.org with esmtp (Exim 4.71)\n\t(envelope-from <sergio.g.delreal@gmail.com>) id 1ds3cK-0001SV-6Q\n\tfor qemu-devel@nongnu.org; Wed, 13 Sep 2017 05:06:02 -0400",
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        ],
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        "X-Gm-Message-State": "AHPjjUjJ6I/GqYEr2mI8qx5qlxgFmuU06mfeTFeepJYLPbQt9v7KDgk/\n\t9eaMDcBLCtG/v4Ac",
        "X-Google-Smtp-Source": "ADKCNb4O1cy06fBLGrowWgFeN8S5fQHaOirfFXoDz4iA0AwyyqBtXjfmMa8hac6lASvJ4YlyVifaeQ==",
        "X-Received": "by 10.176.23.132 with SMTP id r4mr10488928uaf.121.1505293544207; \n\tWed, 13 Sep 2017 02:05:44 -0700 (PDT)",
        "From": "Sergio Andres Gomez Del Real <sergio.g.delreal@gmail.com>",
        "X-Google-Original-From": "Sergio Andres Gomez Del Real\n\t<Sergio.G.DelReal@gmail.com>",
        "To": "qemu-devel@nongnu.org",
        "Date": "Wed, 13 Sep 2017 04:05:11 -0500",
        "Message-Id": "<20170913090522.4022-4-Sergio.G.DelReal@gmail.com>",
        "X-Mailer": "git-send-email 2.11.0",
        "In-Reply-To": "<20170913090522.4022-1-Sergio.G.DelReal@gmail.com>",
        "References": "<20170913090522.4022-1-Sergio.G.DelReal@gmail.com>",
        "X-detected-operating-system": "by eggs.gnu.org: Genre and OS details not\n\trecognized.",
        "X-Received-From": "2607:f8b0:400c:c08::242",
        "Subject": "[Qemu-devel] [PATCH v4 03/14] hvf: fix licensing issues;\n\tisolate task handling code (GPL v2-only)",
        "X-BeenThere": "qemu-devel@nongnu.org",
        "X-Mailman-Version": "2.1.21",
        "Precedence": "list",
        "List-Id": "<qemu-devel.nongnu.org>",
        "List-Unsubscribe": "<https://lists.nongnu.org/mailman/options/qemu-devel>,\n\t<mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>",
        "List-Archive": "<http://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\t<mailto:qemu-devel-request@nongnu.org?subject=subscribe>",
        "Cc": "Sergio Andres Gomez Del Real <Sergio.G.DelReal@gmail.com>,\n\tpbonzini@redhat.com, stefanha@gmail.com",
        "Errors-To": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org",
        "Sender": "\"Qemu-devel\"\n\t<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>"
    },
    "content": "This patch replaces the license header for those files that were either\nGPL v2-or-v3, or GPL v2-only; the replacing license is GPL v2-or-later.\nThe code for task switching/handling, which is derived from KVM and\nhence is GPL v2-only, is isolated in the new files (with this license)\nx86_task.c/.h, and the corresponding compilation rule is added to\ntarget/i386/hvf-utils/Makefile.objs.\nNote that rules for compiling are still missing from\ntarget/i386/Makefile.objs; they will be added later in this patchset.\n\nSigned-off-by: Sergio Andres Gomez Del Real <Sergio.G.DelReal@gmail.com>\n---\n target/i386/hvf-all.c               | 173 +++----------------------------\n target/i386/hvf-utils/Makefile.objs |   2 +-\n target/i386/hvf-utils/vmx.h         |  14 +--\n target/i386/hvf-utils/x86.c         |  14 +--\n target/i386/hvf-utils/x86.h         |  14 +--\n target/i386/hvf-utils/x86_cpuid.c   |   6 +-\n target/i386/hvf-utils/x86_cpuid.h   |  14 +--\n target/i386/hvf-utils/x86_decode.c  |  14 +--\n target/i386/hvf-utils/x86_decode.h  |  14 +--\n target/i386/hvf-utils/x86_descr.c   |  14 +--\n target/i386/hvf-utils/x86_descr.h   |  14 +--\n target/i386/hvf-utils/x86_emu.c     |  14 +--\n target/i386/hvf-utils/x86_emu.h     |  14 +--\n target/i386/hvf-utils/x86_gen.h     |  14 +--\n target/i386/hvf-utils/x86_mmu.c     |  14 +--\n target/i386/hvf-utils/x86_mmu.h     |  14 +--\n target/i386/hvf-utils/x86_task.c    | 201 ++++++++++++++++++++++++++++++++++++\n target/i386/hvf-utils/x86_task.h    |  18 ++++\n target/i386/hvf-utils/x86hvf.c      |  14 +--\n target/i386/hvf-utils/x86hvf.h      |  14 +--\n 20 files changed, 340 insertions(+), 270 deletions(-)\n create mode 100644 target/i386/hvf-utils/x86_task.c\n create mode 100644 target/i386/hvf-utils/x86_task.h",
    "diff": "diff --git a/target/i386/hvf-all.c b/target/i386/hvf-all.c\nindex d5e18faa68..270ec56b8d 100644\n--- a/target/i386/hvf-all.c\n+++ b/target/i386/hvf-all.c\n@@ -5,15 +5,19 @@\n // Copyright 2017 The Android Open Source Project\n // \n // QEMU Hypervisor.framework support\n-// \n-// This software is licensed under the terms of the GNU General Public\n-// License version 2, as published by the Free Software Foundation, and\n-// may be copied, distributed, and modified under those terms.\n-// \n+//\n+// This program is free software; you can redistribute it and/or\n+// modify it under the terms of the GNU Lesser General Public\n+// License as published by the Free Software Foundation; either\n+// version 2 of the License, or (at your option) any later version.\n+//\n // This program is distributed in the hope that it will be useful,\n // but WITHOUT ANY WARRANTY; without even the implied warranty of\n-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n-// GNU General Public License for more details.\n+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU\n+// Lesser General Public License for more details.\n+//\n+// You should have received a copy of the GNU Lesser General Public\n+// License along with this program; if not, see <http://www.gnu.org/licenses/>.\n #include \"qemu/osdep.h\"\n #include \"qemu-common.h\"\n #include \"qemu/error-report.h\"\n@@ -28,6 +32,7 @@\n #include \"hvf-utils/x86_decode.h\"\n #include \"hvf-utils/x86_emu.h\"\n #include \"hvf-utils/x86_cpuid.h\"\n+#include \"hvf-utils/x86_task.h\"\n #include \"hvf-utils/x86hvf.h\"\n \n #include <Hypervisor/hv.h>\n@@ -224,160 +229,6 @@ void update_apic_tpr(CPUState *cpu)\n \n #define VECTORING_INFO_VECTOR_MASK     0xff\n \n-// TODO: taskswitch handling\n-static void save_state_to_tss32(CPUState *cpu, struct x86_tss_segment32 *tss)\n-{\n-    /* CR3 and ldt selector are not saved intentionally */\n-    tss->eip = EIP(cpu);\n-    tss->eflags = EFLAGS(cpu);\n-    tss->eax = EAX(cpu);\n-    tss->ecx = ECX(cpu);\n-    tss->edx = EDX(cpu);\n-    tss->ebx = EBX(cpu);\n-    tss->esp = ESP(cpu);\n-    tss->ebp = EBP(cpu);\n-    tss->esi = ESI(cpu);\n-    tss->edi = EDI(cpu);\n-\n-    tss->es = vmx_read_segment_selector(cpu, REG_SEG_ES).sel;\n-    tss->cs = vmx_read_segment_selector(cpu, REG_SEG_CS).sel;\n-    tss->ss = vmx_read_segment_selector(cpu, REG_SEG_SS).sel;\n-    tss->ds = vmx_read_segment_selector(cpu, REG_SEG_DS).sel;\n-    tss->fs = vmx_read_segment_selector(cpu, REG_SEG_FS).sel;\n-    tss->gs = vmx_read_segment_selector(cpu, REG_SEG_GS).sel;\n-}\n-\n-static void load_state_from_tss32(CPUState *cpu, struct x86_tss_segment32 *tss)\n-{\n-    wvmcs(cpu->hvf_fd, VMCS_GUEST_CR3, tss->cr3);\n-\n-    RIP(cpu) = tss->eip;\n-    EFLAGS(cpu) = tss->eflags | 2;\n-\n-    /* General purpose registers */\n-    RAX(cpu) = tss->eax;\n-    RCX(cpu) = tss->ecx;\n-    RDX(cpu) = tss->edx;\n-    RBX(cpu) = tss->ebx;\n-    RSP(cpu) = tss->esp;\n-    RBP(cpu) = tss->ebp;\n-    RSI(cpu) = tss->esi;\n-    RDI(cpu) = tss->edi;\n-\n-    vmx_write_segment_selector(cpu, (x68_segment_selector){{tss->ldt}}, REG_SEG_LDTR);\n-    vmx_write_segment_selector(cpu, (x68_segment_selector){{tss->es}}, REG_SEG_ES);\n-    vmx_write_segment_selector(cpu, (x68_segment_selector){{tss->cs}}, REG_SEG_CS);\n-    vmx_write_segment_selector(cpu, (x68_segment_selector){{tss->ss}}, REG_SEG_SS);\n-    vmx_write_segment_selector(cpu, (x68_segment_selector){{tss->ds}}, REG_SEG_DS);\n-    vmx_write_segment_selector(cpu, (x68_segment_selector){{tss->fs}}, REG_SEG_FS);\n-    vmx_write_segment_selector(cpu, (x68_segment_selector){{tss->gs}}, REG_SEG_GS);\n-\n-#if 0\n-    load_segment(cpu, REG_SEG_LDTR, tss->ldt);\n-    load_segment(cpu, REG_SEG_ES, tss->es);\n-    load_segment(cpu, REG_SEG_CS, tss->cs);\n-    load_segment(cpu, REG_SEG_SS, tss->ss);\n-    load_segment(cpu, REG_SEG_DS, tss->ds);\n-    load_segment(cpu, REG_SEG_FS, tss->fs);\n-    load_segment(cpu, REG_SEG_GS, tss->gs);\n-#endif\n-}\n-\n-static int task_switch_32(CPUState *cpu, x68_segment_selector tss_sel, x68_segment_selector old_tss_sel,\n-                          uint64_t old_tss_base, struct x86_segment_descriptor *new_desc)\n-{\n-    struct x86_tss_segment32 tss_seg;\n-    uint32_t new_tss_base = x86_segment_base(new_desc);\n-    uint32_t eip_offset = offsetof(struct x86_tss_segment32, eip);\n-    uint32_t ldt_sel_offset = offsetof(struct x86_tss_segment32, ldt);\n-\n-    vmx_read_mem(cpu, &tss_seg, old_tss_base, sizeof(tss_seg));\n-    save_state_to_tss32(cpu, &tss_seg);\n-\n-    vmx_write_mem(cpu, old_tss_base + eip_offset, &tss_seg.eip, ldt_sel_offset - eip_offset);\n-    vmx_read_mem(cpu, &tss_seg, new_tss_base, sizeof(tss_seg));\n-\n-    if (old_tss_sel.sel != 0xffff) {\n-        tss_seg.prev_tss = old_tss_sel.sel;\n-\n-        vmx_write_mem(cpu, new_tss_base, &tss_seg.prev_tss, sizeof(tss_seg.prev_tss));\n-    }\n-    load_state_from_tss32(cpu, &tss_seg);\n-    return 0;\n-}\n-\n-static void vmx_handle_task_switch(CPUState *cpu, x68_segment_selector tss_sel, int reason, bool gate_valid, uint8_t gate, uint64_t gate_type)\n-{\n-    uint64_t rip = rreg(cpu->hvf_fd, HV_X86_RIP);\n-    if (!gate_valid || (gate_type != VMCS_INTR_T_HWEXCEPTION &&\n-                        gate_type != VMCS_INTR_T_HWINTR &&\n-                        gate_type != VMCS_INTR_T_NMI)) {\n-        int ins_len = rvmcs(cpu->hvf_fd, VMCS_EXIT_INSTRUCTION_LENGTH);\n-        macvm_set_rip(cpu, rip + ins_len);\n-        return;\n-    }\n-\n-    load_regs(cpu);\n-\n-    struct x86_segment_descriptor curr_tss_desc, next_tss_desc;\n-    int ret;\n-    x68_segment_selector old_tss_sel = vmx_read_segment_selector(cpu, REG_SEG_TR);\n-    uint64_t old_tss_base = vmx_read_segment_base(cpu, REG_SEG_TR);\n-    uint32_t desc_limit;\n-    struct x86_call_gate task_gate_desc;\n-    struct vmx_segment vmx_seg;\n-\n-    x86_read_segment_descriptor(cpu, &next_tss_desc, tss_sel);\n-    x86_read_segment_descriptor(cpu, &curr_tss_desc, old_tss_sel);\n-\n-    if (reason == TSR_IDT_GATE && gate_valid) {\n-        int dpl;\n-\n-        ret = x86_read_call_gate(cpu, &task_gate_desc, gate);\n-\n-        dpl = task_gate_desc.dpl;\n-        x68_segment_selector cs = vmx_read_segment_selector(cpu, REG_SEG_CS);\n-        if (tss_sel.rpl > dpl || cs.rpl > dpl)\n-            ;//DPRINTF(\"emulate_gp\");\n-    }\n-\n-    desc_limit = x86_segment_limit(&next_tss_desc);\n-    if (!next_tss_desc.p || ((desc_limit < 0x67 && (next_tss_desc.type & 8)) || desc_limit < 0x2b)) {\n-        VM_PANIC(\"emulate_ts\");\n-    }\n-\n-    if (reason == TSR_IRET || reason == TSR_JMP) {\n-        curr_tss_desc.type &= ~(1 << 1); /* clear busy flag */\n-        x86_write_segment_descriptor(cpu, &curr_tss_desc, old_tss_sel);\n-    }\n-\n-    if (reason == TSR_IRET)\n-        EFLAGS(cpu) &= ~RFLAGS_NT;\n-\n-    if (reason != TSR_CALL && reason != TSR_IDT_GATE)\n-        old_tss_sel.sel = 0xffff;\n-\n-    if (reason != TSR_IRET) {\n-        next_tss_desc.type |= (1 << 1); /* set busy flag */\n-        x86_write_segment_descriptor(cpu, &next_tss_desc, tss_sel);\n-    }\n-\n-    if (next_tss_desc.type & 8)\n-        ret = task_switch_32(cpu, tss_sel, old_tss_sel, old_tss_base, &next_tss_desc);\n-    else\n-        //ret = task_switch_16(cpu, tss_sel, old_tss_sel, old_tss_base, &next_tss_desc);\n-        VM_PANIC(\"task_switch_16\");\n-\n-    macvm_set_cr0(cpu->hvf_fd, rvmcs(cpu->hvf_fd, VMCS_GUEST_CR0) | CR0_TS);\n-    x86_segment_descriptor_to_vmx(cpu, tss_sel, &next_tss_desc, &vmx_seg);\n-    vmx_write_segment_descriptor(cpu, &vmx_seg, REG_SEG_TR);\n-\n-    store_regs(cpu);\n-\n-    hv_vcpu_invalidate_tlb(cpu->hvf_fd);\n-    hv_vcpu_flush(cpu->hvf_fd);\n-}\n-\n static void hvf_handle_interrupt(CPUState * cpu, int mask)\n {\n     cpu->interrupt_request |= mask;\ndiff --git a/target/i386/hvf-utils/Makefile.objs b/target/i386/hvf-utils/Makefile.objs\nindex 7df219ad9c..79d8969ca8 100644\n--- a/target/i386/hvf-utils/Makefile.objs\n+++ b/target/i386/hvf-utils/Makefile.objs\n@@ -1 +1 @@\n-obj-y += x86.o x86_cpuid.o x86_decode.o x86_descr.o x86_emu.o x86_flags.o x86_mmu.o x86hvf.o\n+obj-y += x86.o x86_cpuid.o x86_decode.o x86_descr.o x86_emu.o x86_flags.o x86_mmu.o x86hvf.o x86_task.o\ndiff --git a/target/i386/hvf-utils/vmx.h b/target/i386/hvf-utils/vmx.h\nindex 8a080e6777..e5359df87f 100644\n--- a/target/i386/hvf-utils/vmx.h\n+++ b/target/i386/hvf-utils/vmx.h\n@@ -6,17 +6,17 @@\n  * Interfaces to Hypervisor.framework to read/write X86 registers and VMCS.\n  *\n  * This program is free software; you can redistribute it and/or\n- * modify it under the terms of the GNU General Public License as\n- * published by the Free Software Foundation; either version 2 or\n- * (at your option) version 3 of the License.\n+ * modify it under the terms of the GNU Lesser General Public\n+ * License as published by the Free Software Foundation; either\n+ * version 2 of the License, or (at your option) any later version.\n  *\n  * This program is distributed in the hope that it will be useful,\n  * but WITHOUT ANY WARRANTY; without even the implied warranty of\n- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n- * GNU General Public License for more details.\n+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU\n+ * Lesser General Public License for more details.\n  *\n- * You should have received a copy of the GNU General Public License along\n- * with this program; if not, see <http://www.gnu.org/licenses/>.\n+ * You should have received a copy of the GNU Lesser General Public\n+ * License along with this program; if not, see <http://www.gnu.org/licenses/>.\n  */\n \n #ifndef VMX_H\ndiff --git a/target/i386/hvf-utils/x86.c b/target/i386/hvf-utils/x86.c\nindex e3db2c9c8b..4debbff31c 100644\n--- a/target/i386/hvf-utils/x86.c\n+++ b/target/i386/hvf-utils/x86.c\n@@ -3,17 +3,17 @@\n  * Copyright (C) 2017 Google Inc,\n  *\n  * This program is free software; you can redistribute it and/or\n- * modify it under the terms of the GNU General Public License as\n- * published by the Free Software Foundation; either version 2 or\n- * (at your option) version 3 of the License.\n+ * modify it under the terms of the GNU Lesser General Public\n+ * License as published by the Free Software Foundation; either\n+ * version 2 of the License, or (at your option) any later version.\n  *\n  * This program is distributed in the hope that it will be useful,\n  * but WITHOUT ANY WARRANTY; without even the implied warranty of\n- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n- * GNU General Public License for more details.\n+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU\n+ * Lesser General Public License for more details.\n  *\n- * You should have received a copy of the GNU General Public License along\n- * with this program; if not, see <http://www.gnu.org/licenses/>.\n+ * You should have received a copy of the GNU Lesser General Public\n+ * License along with this program; if not, see <http://www.gnu.org/licenses/>.\n  */\n \n #include \"qemu/osdep.h\"\ndiff --git a/target/i386/hvf-utils/x86.h b/target/i386/hvf-utils/x86.h\nindex 5dffdd6568..d433d15ea4 100644\n--- a/target/i386/hvf-utils/x86.h\n+++ b/target/i386/hvf-utils/x86.h\n@@ -3,17 +3,17 @@\n  * Copyright (C) 2017 Veertu Inc,\n  *\n  * This program is free software; you can redistribute it and/or\n- * modify it under the terms of the GNU General Public License as\n- * published by the Free Software Foundation; either version 2 or\n- * (at your option) version 3 of the License.\n+ * modify it under the terms of the GNU Lesser General Public\n+ * License as published by the Free Software Foundation; either\n+ * version 2 of the License, or (at your option) any later version.\n  *\n  * This program is distributed in the hope that it will be useful,\n  * but WITHOUT ANY WARRANTY; without even the implied warranty of\n- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n- * GNU General Public License for more details.\n+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU\n+ * Lesser General Public License for more details.\n  *\n- * You should have received a copy of the GNU General Public License along\n- * with this program; if not, see <http://www.gnu.org/licenses/>.\n+ * You should have received a copy of the GNU Lesser General Public\n+ * License along with this program; if not, see <http://www.gnu.org/licenses/>.\n  */\n \n #pragma once\ndiff --git a/target/i386/hvf-utils/x86_cpuid.c b/target/i386/hvf-utils/x86_cpuid.c\nindex e496cf001c..4abeb5c2da 100644\n--- a/target/i386/hvf-utils/x86_cpuid.c\n+++ b/target/i386/hvf-utils/x86_cpuid.c\n@@ -4,18 +4,18 @@\n  *  Copyright (c) 2003 Fabrice Bellard\n  *  Copyright (c) 2017 Google Inc.\n  *\n- * This library is free software; you can redistribute it and/or\n+ * This program is free software; you can redistribute it and/or\n  * modify it under the terms of the GNU Lesser General Public\n  * License as published by the Free Software Foundation; either\n  * version 2 of the License, or (at your option) any later version.\n  *\n- * This library is distributed in the hope that it will be useful,\n+ * This program is distributed in the hope that it will be useful,\n  * but WITHOUT ANY WARRANTY; without even the implied warranty of\n  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU\n  * Lesser General Public License for more details.\n  *\n  * You should have received a copy of the GNU Lesser General Public\n- * License along with this library; if not, see <http://www.gnu.org/licenses/>.\n+ * License along with this program; if not, see <http://www.gnu.org/licenses/>.\n  *\n  * cpuid\n  */\ndiff --git a/target/i386/hvf-utils/x86_cpuid.h b/target/i386/hvf-utils/x86_cpuid.h\nindex 02f2f115b0..b84a2f08df 100644\n--- a/target/i386/hvf-utils/x86_cpuid.h\n+++ b/target/i386/hvf-utils/x86_cpuid.h\n@@ -2,17 +2,17 @@\n  * Copyright (C) 2016 Veertu Inc,\n  *\n  * This program is free software; you can redistribute it and/or\n- * modify it under the terms of the GNU General Public License as\n- * published by the Free Software Foundation; either version 2 or\n- * (at your option) version 3 of the License.\n+ * modify it under the terms of the GNU Lesser General Public\n+ * License as published by the Free Software Foundation; either\n+ * version 2 of the License, or (at your option) any later version.\n  *\n  * This program is distributed in the hope that it will be useful,\n  * but WITHOUT ANY WARRANTY; without even the implied warranty of\n- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n- * GNU General Public License for more details.\n+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU\n+ * Lesser General Public License for more details.\n  *\n- * You should have received a copy of the GNU General Public License along\n- * with this program; if not, see <http://www.gnu.org/licenses/>.\n+ * You should have received a copy of the GNU Lesser General Public\n+ * License along with this program; if not, see <http://www.gnu.org/licenses/>.\n  */\n #ifndef __CPUID_H__\n #define __CPUID_H__\ndiff --git a/target/i386/hvf-utils/x86_decode.c b/target/i386/hvf-utils/x86_decode.c\nindex b4d8e22449..8deaab11d2 100644\n--- a/target/i386/hvf-utils/x86_decode.c\n+++ b/target/i386/hvf-utils/x86_decode.c\n@@ -3,17 +3,17 @@\n  * Copyright (C) 2017 Google Inc,\n  *\n  * This program is free software; you can redistribute it and/or\n- * modify it under the terms of the GNU General Public License as\n- * published by the Free Software Foundation; either version 2 or\n- * (at your option) version 3 of the License.\n+ * modify it under the terms of the GNU Lesser General Public\n+ * License as published by the Free Software Foundation; either\n+ * version 2 of the License, or (at your option) any later version.\n  *\n  * This program is distributed in the hope that it will be useful,\n  * but WITHOUT ANY WARRANTY; without even the implied warranty of\n- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n- * GNU General Public License for more details.\n+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU\n+ * Lesser General Public License for more details.\n  *\n- * You should have received a copy of the GNU General Public License along\n- * with this program; if not, see <http://www.gnu.org/licenses/>.\n+ * You should have received a copy of the GNU Lesser General Public\n+ * License along with this program; if not, see <http://www.gnu.org/licenses/>.\n  */\n \n #include \"qemu/osdep.h\"\ndiff --git a/target/i386/hvf-utils/x86_decode.h b/target/i386/hvf-utils/x86_decode.h\nindex 3a22d7d1a5..fde524f819 100644\n--- a/target/i386/hvf-utils/x86_decode.h\n+++ b/target/i386/hvf-utils/x86_decode.h\n@@ -2,17 +2,17 @@\n  * Copyright (C) 2016 Veertu Inc,\n  *\n  * This program is free software; you can redistribute it and/or\n- * modify it under the terms of the GNU General Public License as\n- * published by the Free Software Foundation; either version 2 or\n- * (at your option) version 3 of the License.\n+ * modify it under the terms of the GNU Lesser General Public\n+ * License as published by the Free Software Foundation; either\n+ * version 2 of the License, or (at your option) any later version.\n  *\n  * This program is distributed in the hope that it will be useful,\n  * but WITHOUT ANY WARRANTY; without even the implied warranty of\n- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n- * GNU General Public License for more details.\n+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU\n+ * Lesser General Public License for more details.\n  *\n- * You should have received a copy of the GNU General Public License along\n- * with this program; if not, see <http://www.gnu.org/licenses/>.\n+ * You should have received a copy of the GNU Lesser General Public\n+ * License along with this program; if not, see <http://www.gnu.org/licenses/>.\n  */\n \n #pragma once\ndiff --git a/target/i386/hvf-utils/x86_descr.c b/target/i386/hvf-utils/x86_descr.c\nindex c3b089aaa8..0b9562818f 100644\n--- a/target/i386/hvf-utils/x86_descr.c\n+++ b/target/i386/hvf-utils/x86_descr.c\n@@ -3,17 +3,17 @@\n  * Copyright (C) 2017 Google Inc,\n  *\n  * This program is free software; you can redistribute it and/or\n- * modify it under the terms of the GNU General Public License as\n- * published by the Free Software Foundation; either version 2 or\n- * (at your option) version 3 of the License.\n+ * modify it under the terms of the GNU Lesser General Public\n+ * License as published by the Free Software Foundation; either\n+ * version 2 of the License, or (at your option) any later version.\n  *\n  * This program is distributed in the hope that it will be useful,\n  * but WITHOUT ANY WARRANTY; without even the implied warranty of\n- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n- * GNU General Public License for more details.\n+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU\n+ * Lesser General Public License for more details.\n  *\n- * You should have received a copy of the GNU General Public License along\n- * with this program; if not, see <http://www.gnu.org/licenses/>.\n+ * You should have received a copy of the GNU Lesser General Public\n+ * License along with this program; if not, see <http://www.gnu.org/licenses/>.\n  */\n \n #include \"qemu/osdep.h\"\ndiff --git a/target/i386/hvf-utils/x86_descr.h b/target/i386/hvf-utils/x86_descr.h\nindex 78fb1bc420..9917585aeb 100644\n--- a/target/i386/hvf-utils/x86_descr.h\n+++ b/target/i386/hvf-utils/x86_descr.h\n@@ -3,17 +3,17 @@\n  * Copyright (C) 2017 Google Inc,\n  *\n  * This program is free software; you can redistribute it and/or\n- * modify it under the terms of the GNU General Public License as\n- * published by the Free Software Foundation; either version 2 or\n- * (at your option) version 3 of the License.\n+ * modify it under the terms of the GNU Lesser General Public\n+ * License as published by the Free Software Foundation; either\n+ * version 2 of the License, or (at your option) any later version.\n  *\n  * This program is distributed in the hope that it will be useful,\n  * but WITHOUT ANY WARRANTY; without even the implied warranty of\n- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n- * GNU General Public License for more details.\n+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU\n+ * Lesser General Public License for more details.\n  *\n- * You should have received a copy of the GNU General Public License along\n- * with this program; if not, see <http://www.gnu.org/licenses/>.\n+ * You should have received a copy of the GNU Lesser General Public\n+ * License along with this program; if not, see <http://www.gnu.org/licenses/>.\n  */\n \n #pragma once\ndiff --git a/target/i386/hvf-utils/x86_emu.c b/target/i386/hvf-utils/x86_emu.c\nindex 8b5efc76f0..76680921d1 100644\n--- a/target/i386/hvf-utils/x86_emu.c\n+++ b/target/i386/hvf-utils/x86_emu.c\n@@ -3,17 +3,17 @@\n  * Copyright (C) 2017 Google Inc,\n  *\n  * This program is free software; you can redistribute it and/or\n- * modify it under the terms of the GNU General Public License as\n- * published by the Free Software Foundation; either version 2 or\n- * (at your option) version 3 of the License.\n+ * modify it under the terms of the GNU Lesser General Public\n+ * License as published by the Free Software Foundation; either\n+ * version 2 of the License, or (at your option) any later version.\n  *\n  * This program is distributed in the hope that it will be useful,\n  * but WITHOUT ANY WARRANTY; without even the implied warranty of\n- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n- * GNU General Public License for more details.\n+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU\n+ * Lesser General Public License for more details.\n  *\n- * You should have received a copy of the GNU General Public License along\n- * with this program; if not, see <http://www.gnu.org/licenses/>.\n+ * You should have received a copy of the GNU Lesser General Public\n+ * License along with this program; if not, see <http://www.gnu.org/licenses/>.\n  */\n \n /////////////////////////////////////////////////////////////////////////\ndiff --git a/target/i386/hvf-utils/x86_emu.h b/target/i386/hvf-utils/x86_emu.h\nindex 42cc5e4296..f6feff5553 100644\n--- a/target/i386/hvf-utils/x86_emu.h\n+++ b/target/i386/hvf-utils/x86_emu.h\n@@ -3,17 +3,17 @@\n  * Copyright (C) 2017 Google Inc,\n  *\n  * This program is free software; you can redistribute it and/or\n- * modify it under the terms of the GNU General Public License as\n- * published by the Free Software Foundation; either version 2 or\n- * (at your option) version 3 of the License.\n+ * modify it under the terms of the GNU Lesser General Public\n+ * License as published by the Free Software Foundation; either\n+ * version 2 of the License, or (at your option) any later version.\n  *\n  * This program is distributed in the hope that it will be useful,\n  * but WITHOUT ANY WARRANTY; without even the implied warranty of\n- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n- * GNU General Public License for more details.\n+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU\n+ * Lesser General Public License for more details.\n  *\n- * You should have received a copy of the GNU General Public License along\n- * with this program; if not, see <http://www.gnu.org/licenses/>.\n+ * You should have received a copy of the GNU Lesser General Public\n+ * License along with this program; if not, see <http://www.gnu.org/licenses/>.\n  */\n #ifndef __X86_EMU_H__\n #define __X86_EMU_H__\ndiff --git a/target/i386/hvf-utils/x86_gen.h b/target/i386/hvf-utils/x86_gen.h\nindex e4340fa244..2045b0e69d 100644\n--- a/target/i386/hvf-utils/x86_gen.h\n+++ b/target/i386/hvf-utils/x86_gen.h\n@@ -3,17 +3,17 @@\n  * Copyright (C) 2017 Google Inc,\n  *\n  * This program is free software; you can redistribute it and/or\n- * modify it under the terms of the GNU General Public License as\n- * published by the Free Software Foundation; either version 2 or\n- * (at your option) version 3 of the License.\n+ * modify it under the terms of the GNU Lesser General Public\n+ * License as published by the Free Software Foundation; either\n+ * version 2 of the License, or (at your option) any later version.\n  *\n  * This program is distributed in the hope that it will be useful,\n  * but WITHOUT ANY WARRANTY; without even the implied warranty of\n- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n- * GNU General Public License for more details.\n+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU\n+ * Lesser General Public License for more details.\n  *\n- * You should have received a copy of the GNU General Public License along\n- * with this program; if not, see <http://www.gnu.org/licenses/>.\n+ * You should have received a copy of the GNU Lesser General Public\n+ * License along with this program; if not, see <http://www.gnu.org/licenses/>.\n  */\n #ifndef __X86_GEN_H__\n #define __X86_GEN_H__\ndiff --git a/target/i386/hvf-utils/x86_mmu.c b/target/i386/hvf-utils/x86_mmu.c\nindex 00fae735be..95b3d15b94 100644\n--- a/target/i386/hvf-utils/x86_mmu.c\n+++ b/target/i386/hvf-utils/x86_mmu.c\n@@ -3,17 +3,17 @@\n  * Copyright (C) 2017 Google Inc,\n  *\n  * This program is free software; you can redistribute it and/or\n- * modify it under the terms of the GNU General Public License as\n- * published by the Free Software Foundation; either version 2 or\n- * (at your option) version 3 of the License.\n+ * modify it under the terms of the GNU Lesser General Public\n+ * License as published by the Free Software Foundation; either\n+ * version 2 of the License, or (at your option) any later version.\n  *\n  * This program is distributed in the hope that it will be useful,\n  * but WITHOUT ANY WARRANTY; without even the implied warranty of\n- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n- * GNU General Public License for more details.\n+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU\n+ * Lesser General Public License for more details.\n  *\n- * You should have received a copy of the GNU General Public License along\n- * with this program; if not, see <http://www.gnu.org/licenses/>.\n+ * You should have received a copy of the GNU Lesser General Public\n+ * License along with this program; if not, see <http://www.gnu.org/licenses/>.\n  */\n #include \"qemu/osdep.h\"\n \ndiff --git a/target/i386/hvf-utils/x86_mmu.h b/target/i386/hvf-utils/x86_mmu.h\nindex f794d04b3d..aa0fcfafd2 100644\n--- a/target/i386/hvf-utils/x86_mmu.h\n+++ b/target/i386/hvf-utils/x86_mmu.h\n@@ -3,17 +3,17 @@\n  * Copyright (C) 2017 Google Inc,\n  *\n  * This program is free software; you can redistribute it and/or\n- * modify it under the terms of the GNU General Public License as\n- * published by the Free Software Foundation; either version 2 or\n- * (at your option) version 3 of the License.\n+ * modify it under the terms of the GNU Lesser General Public\n+ * License as published by the Free Software Foundation; either\n+ * version 2 of the License, or (at your option) any later version.\n  *\n  * This program is distributed in the hope that it will be useful,\n  * but WITHOUT ANY WARRANTY; without even the implied warranty of\n- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n- * GNU General Public License for more details.\n+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU\n+ * Lesser General Public License for more details.\n  *\n- * You should have received a copy of the GNU General Public License along\n- * with this program; if not, see <http://www.gnu.org/licenses/>.\n+ * You should have received a copy of the GNU Lesser General Public\n+ * License along with this program; if not, see <http://www.gnu.org/licenses/>.\n  */\n #ifndef __X86_MMU_H__\n #define __X86_MMU_H__\ndiff --git a/target/i386/hvf-utils/x86_task.c b/target/i386/hvf-utils/x86_task.c\nnew file mode 100644\nindex 0000000000..1a2646437a\n--- /dev/null\n+++ b/target/i386/hvf-utils/x86_task.c\n@@ -0,0 +1,201 @@\n+// This software is licensed under the terms of the GNU General Public\n+// License version 2, as published by the Free Software Foundation, and\n+// may be copied, distributed, and modified under those terms.\n+// \n+// This program is distributed in the hope that it will be useful,\n+// but WITHOUT ANY WARRANTY; without even the implied warranty of\n+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n+// GNU General Public License for more details.\n+#include \"qemu/osdep.h\"\n+#include \"qemu-common.h\"\n+#include \"qemu/error-report.h\"\n+\n+#include \"sysemu/hvf.h\"\n+#include \"hvf-i386.h\"\n+#include \"hvf-utils/vmcs.h\"\n+#include \"hvf-utils/vmx.h\"\n+#include \"hvf-utils/x86.h\"\n+#include \"hvf-utils/x86_descr.h\"\n+#include \"hvf-utils/x86_mmu.h\"\n+#include \"hvf-utils/x86_decode.h\"\n+#include \"hvf-utils/x86_emu.h\"\n+#include \"hvf-utils/x86_cpuid.h\"\n+#include \"hvf-utils/x86_task.h\"\n+#include \"hvf-utils/x86hvf.h\"\n+\n+#include <Hypervisor/hv.h>\n+#include <Hypervisor/hv_vmx.h>\n+\n+#include \"exec/address-spaces.h\"\n+#include \"exec/exec-all.h\"\n+#include \"exec/ioport.h\"\n+#include \"hw/i386/apic_internal.h\"\n+#include \"hw/boards.h\"\n+#include \"qemu/main-loop.h\"\n+#include \"strings.h\"\n+#include \"sysemu/accel.h\"\n+#include \"sysemu/sysemu.h\"\n+#include \"target/i386/cpu.h\"\n+\n+// TODO: taskswitch handling\n+static void save_state_to_tss32(CPUState *cpu, struct x86_tss_segment32 *tss)\n+{\n+    X86CPU *x86_cpu = X86_CPU(cpu);\n+    CPUX86State *env = &x86_cpu->env;\n+\n+    /* CR3 and ldt selector are not saved intentionally */\n+    tss->eip = EIP(env);\n+    tss->eflags = EFLAGS(env);\n+    tss->eax = EAX(env);\n+    tss->ecx = ECX(env);\n+    tss->edx = EDX(env);\n+    tss->ebx = EBX(env);\n+    tss->esp = ESP(env);\n+    tss->ebp = EBP(env);\n+    tss->esi = ESI(env);\n+    tss->edi = EDI(env);\n+\n+    tss->es = vmx_read_segment_selector(cpu, REG_SEG_ES).sel;\n+    tss->cs = vmx_read_segment_selector(cpu, REG_SEG_CS).sel;\n+    tss->ss = vmx_read_segment_selector(cpu, REG_SEG_SS).sel;\n+    tss->ds = vmx_read_segment_selector(cpu, REG_SEG_DS).sel;\n+    tss->fs = vmx_read_segment_selector(cpu, REG_SEG_FS).sel;\n+    tss->gs = vmx_read_segment_selector(cpu, REG_SEG_GS).sel;\n+}\n+\n+static void load_state_from_tss32(CPUState *cpu, struct x86_tss_segment32 *tss)\n+{\n+    X86CPU *x86_cpu = X86_CPU(cpu);\n+    CPUX86State *env = &x86_cpu->env;\n+\n+    wvmcs(cpu->hvf_fd, VMCS_GUEST_CR3, tss->cr3);\n+\n+    RIP(env) = tss->eip;\n+    EFLAGS(env) = tss->eflags | 2;\n+\n+    /* General purpose registers */\n+    RAX(env) = tss->eax;\n+    RCX(env) = tss->ecx;\n+    RDX(env) = tss->edx;\n+    RBX(env) = tss->ebx;\n+    RSP(env) = tss->esp;\n+    RBP(env) = tss->ebp;\n+    RSI(env) = tss->esi;\n+    RDI(env) = tss->edi;\n+\n+    vmx_write_segment_selector(cpu, (x68_segment_selector){{tss->ldt}}, REG_SEG_LDTR);\n+    vmx_write_segment_selector(cpu, (x68_segment_selector){{tss->es}}, REG_SEG_ES);\n+    vmx_write_segment_selector(cpu, (x68_segment_selector){{tss->cs}}, REG_SEG_CS);\n+    vmx_write_segment_selector(cpu, (x68_segment_selector){{tss->ss}}, REG_SEG_SS);\n+    vmx_write_segment_selector(cpu, (x68_segment_selector){{tss->ds}}, REG_SEG_DS);\n+    vmx_write_segment_selector(cpu, (x68_segment_selector){{tss->fs}}, REG_SEG_FS);\n+    vmx_write_segment_selector(cpu, (x68_segment_selector){{tss->gs}}, REG_SEG_GS);\n+\n+#if 0\n+    load_segment(cpu, REG_SEG_LDTR, tss->ldt);\n+    load_segment(cpu, REG_SEG_ES, tss->es);\n+    load_segment(cpu, REG_SEG_CS, tss->cs);\n+    load_segment(cpu, REG_SEG_SS, tss->ss);\n+    load_segment(cpu, REG_SEG_DS, tss->ds);\n+    load_segment(cpu, REG_SEG_FS, tss->fs);\n+    load_segment(cpu, REG_SEG_GS, tss->gs);\n+#endif\n+}\n+\n+static int task_switch_32(CPUState *cpu, x68_segment_selector tss_sel, x68_segment_selector old_tss_sel,\n+                          uint64_t old_tss_base, struct x86_segment_descriptor *new_desc)\n+{\n+    struct x86_tss_segment32 tss_seg;\n+    uint32_t new_tss_base = x86_segment_base(new_desc);\n+    uint32_t eip_offset = offsetof(struct x86_tss_segment32, eip);\n+    uint32_t ldt_sel_offset = offsetof(struct x86_tss_segment32, ldt);\n+\n+    vmx_read_mem(cpu, &tss_seg, old_tss_base, sizeof(tss_seg));\n+    save_state_to_tss32(cpu, &tss_seg);\n+\n+    vmx_write_mem(cpu, old_tss_base + eip_offset, &tss_seg.eip, ldt_sel_offset - eip_offset);\n+    vmx_read_mem(cpu, &tss_seg, new_tss_base, sizeof(tss_seg));\n+\n+    if (old_tss_sel.sel != 0xffff) {\n+        tss_seg.prev_tss = old_tss_sel.sel;\n+\n+        vmx_write_mem(cpu, new_tss_base, &tss_seg.prev_tss, sizeof(tss_seg.prev_tss));\n+    }\n+    load_state_from_tss32(cpu, &tss_seg);\n+    return 0;\n+}\n+\n+void vmx_handle_task_switch(CPUState *cpu, x68_segment_selector tss_sel, int reason, bool gate_valid, uint8_t gate, uint64_t gate_type)\n+{\n+    uint64_t rip = rreg(cpu->hvf_fd, HV_X86_RIP);\n+    if (!gate_valid || (gate_type != VMCS_INTR_T_HWEXCEPTION &&\n+                        gate_type != VMCS_INTR_T_HWINTR &&\n+                        gate_type != VMCS_INTR_T_NMI)) {\n+        int ins_len = rvmcs(cpu->hvf_fd, VMCS_EXIT_INSTRUCTION_LENGTH);\n+        macvm_set_rip(cpu, rip + ins_len);\n+        return;\n+    }\n+\n+    load_regs(cpu);\n+\n+    struct x86_segment_descriptor curr_tss_desc, next_tss_desc;\n+    int ret;\n+    x68_segment_selector old_tss_sel = vmx_read_segment_selector(cpu, REG_SEG_TR);\n+    uint64_t old_tss_base = vmx_read_segment_base(cpu, REG_SEG_TR);\n+    uint32_t desc_limit;\n+    struct x86_call_gate task_gate_desc;\n+    struct vmx_segment vmx_seg;\n+\n+    X86CPU *x86_cpu = X86_CPU(cpu);\n+    CPUX86State *env = &x86_cpu->env;\n+\n+    x86_read_segment_descriptor(cpu, &next_tss_desc, tss_sel);\n+    x86_read_segment_descriptor(cpu, &curr_tss_desc, old_tss_sel);\n+\n+    if (reason == TSR_IDT_GATE && gate_valid) {\n+        int dpl;\n+\n+        ret = x86_read_call_gate(cpu, &task_gate_desc, gate);\n+\n+        dpl = task_gate_desc.dpl;\n+        x68_segment_selector cs = vmx_read_segment_selector(cpu, REG_SEG_CS);\n+        if (tss_sel.rpl > dpl || cs.rpl > dpl)\n+            ;//DPRINTF(\"emulate_gp\");\n+    }\n+\n+    desc_limit = x86_segment_limit(&next_tss_desc);\n+    if (!next_tss_desc.p || ((desc_limit < 0x67 && (next_tss_desc.type & 8)) || desc_limit < 0x2b)) {\n+        VM_PANIC(\"emulate_ts\");\n+    }\n+\n+    if (reason == TSR_IRET || reason == TSR_JMP) {\n+        curr_tss_desc.type &= ~(1 << 1); /* clear busy flag */\n+        x86_write_segment_descriptor(cpu, &curr_tss_desc, old_tss_sel);\n+    }\n+\n+    if (reason == TSR_IRET)\n+        EFLAGS(env) &= ~RFLAGS_NT;\n+\n+    if (reason != TSR_CALL && reason != TSR_IDT_GATE)\n+        old_tss_sel.sel = 0xffff;\n+\n+    if (reason != TSR_IRET) {\n+        next_tss_desc.type |= (1 << 1); /* set busy flag */\n+        x86_write_segment_descriptor(cpu, &next_tss_desc, tss_sel);\n+    }\n+\n+    if (next_tss_desc.type & 8)\n+        ret = task_switch_32(cpu, tss_sel, old_tss_sel, old_tss_base, &next_tss_desc);\n+    else\n+        //ret = task_switch_16(cpu, tss_sel, old_tss_sel, old_tss_base, &next_tss_desc);\n+        VM_PANIC(\"task_switch_16\");\n+\n+    macvm_set_cr0(cpu->hvf_fd, rvmcs(cpu->hvf_fd, VMCS_GUEST_CR0) | CR0_TS);\n+    x86_segment_descriptor_to_vmx(cpu, tss_sel, &next_tss_desc, &vmx_seg);\n+    vmx_write_segment_descriptor(cpu, &vmx_seg, REG_SEG_TR);\n+\n+    store_regs(cpu);\n+\n+    hv_vcpu_invalidate_tlb(cpu->hvf_fd);\n+    hv_vcpu_flush(cpu->hvf_fd);\n+}\ndiff --git a/target/i386/hvf-utils/x86_task.h b/target/i386/hvf-utils/x86_task.h\nnew file mode 100644\nindex 0000000000..4f1b188d2e\n--- /dev/null\n+++ b/target/i386/hvf-utils/x86_task.h\n@@ -0,0 +1,18 @@\n+/* This program is free software; you can redistribute it and/or\n+ * modify it under the terms of the GNU General Public License as\n+ * published by the Free Software Foundation; either version 2 or\n+ * (at your option) version 3 of the License.\n+ *\n+ * This program is distributed in the hope that it will be useful,\n+ * but WITHOUT ANY WARRANTY; without even the implied warranty of\n+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n+ * GNU General Public License for more details.\n+ *\n+ * You should have received a copy of the GNU General Public License along\n+ * with this program; if not, see <http://www.gnu.org/licenses/>.\n+ */\n+#ifndef HVF_TASK\n+#define HVF_TASK\n+void vmx_handle_task_switch(CPUState *cpu, x68_segment_selector tss_sel,\n+        int reason, bool gate_valid, uint8_t gate, uint64_t gate_type);\n+#endif\ndiff --git a/target/i386/hvf-utils/x86hvf.c b/target/i386/hvf-utils/x86hvf.c\nindex d5668df37f..aba8983dc7 100644\n--- a/target/i386/hvf-utils/x86hvf.c\n+++ b/target/i386/hvf-utils/x86hvf.c\n@@ -4,17 +4,17 @@\n  * Copyright (C) 2017 Google Inc,\n  *\n  * This program is free software; you can redistribute it and/or\n- * modify it under the terms of the GNU General Public License as\n- * published by the Free Software Foundation; either version 2 or\n- * (at your option) version 3 of the License.\n+ * modify it under the terms of the GNU Lesser General Public\n+ * License as published by the Free Software Foundation; either\n+ * version 2 of the License, or (at your option) any later version.\n  *\n  * This program is distributed in the hope that it will be useful,\n  * but WITHOUT ANY WARRANTY; without even the implied warranty of\n- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n- * GNU General Public License for more details.\n+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU\n+ * Lesser General Public License for more details.\n  *\n- * You should have received a copy of the GNU General Public License along\n- * with this program; if not, see <http://www.gnu.org/licenses/>.\n+ * You should have received a copy of the GNU Lesser General Public\n+ * License along with this program; if not, see <http://www.gnu.org/licenses/>.\n  */\n \n #include \"qemu/osdep.h\"\ndiff --git a/target/i386/hvf-utils/x86hvf.h b/target/i386/hvf-utils/x86hvf.h\nindex fbc2158a2b..0c5bc3dcf8 100644\n--- a/target/i386/hvf-utils/x86hvf.h\n+++ b/target/i386/hvf-utils/x86hvf.h\n@@ -3,17 +3,17 @@\n  * Copyright (C) 2017 Google Inc,\n  *\n  * This program is free software; you can redistribute it and/or\n- * modify it under the terms of the GNU General Public License as\n- * published by the Free Software Foundation; either version 2 or\n- * (at your option) version 3 of the License.\n+ * modify it under the terms of the GNU Lesser General Public\n+ * License as published by the Free Software Foundation; either\n+ * version 2 of the License, or (at your option) any later version.\n  *\n  * This program is distributed in the hope that it will be useful,\n  * but WITHOUT ANY WARRANTY; without even the implied warranty of\n- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n- * GNU General Public License for more details.\n+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU\n+ * Lesser General Public License for more details.\n  *\n- * You should have received a copy of the GNU General Public License along\n- * with this program; if not, see <http://www.gnu.org/licenses/>.\n+ * You should have received a copy of the GNU Lesser General Public\n+ * License along with this program; if not, see <http://www.gnu.org/licenses/>.\n  */\n #ifndef X86HVF_H\n #define X86HVF_H\n",
    "prefixes": [
        "v4",
        "03/14"
    ]
}