i386: move kvm accel files into kvm/

Signed-off-by: Claudio Fontana <cfontana@suse.de>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20201212155530.23098-2-cfontana@suse.de>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

target/i386/kvm/hyperv-proto.h

@@ -0,0 +1,164 @@
+/*
+ * Definitions for Hyper-V guest/hypervisor interaction - x86-specific part
+ *
+ * Copyright (c) 2017-2018 Virtuozzo International GmbH.
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#ifndef TARGET_I386_HYPERV_PROTO_H
+#define TARGET_I386_HYPERV_PROTO_H
+
+#include "hw/hyperv/hyperv-proto.h"
+
+#define HV_CPUID_VENDOR_AND_MAX_FUNCTIONS     0x40000000
+#define HV_CPUID_INTERFACE                    0x40000001
+#define HV_CPUID_VERSION                      0x40000002
+#define HV_CPUID_FEATURES                     0x40000003
+#define HV_CPUID_ENLIGHTMENT_INFO             0x40000004
+#define HV_CPUID_IMPLEMENT_LIMITS             0x40000005
+#define HV_CPUID_NESTED_FEATURES              0x4000000A
+#define HV_CPUID_MIN                          0x40000005
+#define HV_CPUID_MAX                          0x4000ffff
+#define HV_HYPERVISOR_PRESENT_BIT             0x80000000
+
+/*
+ * HV_CPUID_FEATURES.EAX bits
+ */
+#define HV_VP_RUNTIME_AVAILABLE      (1u << 0)
+#define HV_TIME_REF_COUNT_AVAILABLE  (1u << 1)
+#define HV_SYNIC_AVAILABLE           (1u << 2)
+#define HV_SYNTIMERS_AVAILABLE       (1u << 3)
+#define HV_APIC_ACCESS_AVAILABLE     (1u << 4)
+#define HV_HYPERCALL_AVAILABLE       (1u << 5)
+#define HV_VP_INDEX_AVAILABLE        (1u << 6)
+#define HV_RESET_AVAILABLE           (1u << 7)
+#define HV_REFERENCE_TSC_AVAILABLE   (1u << 9)
+#define HV_ACCESS_FREQUENCY_MSRS     (1u << 11)
+#define HV_ACCESS_REENLIGHTENMENTS_CONTROL  (1u << 13)
+
+/*
+ * HV_CPUID_FEATURES.EDX bits
+ */
+#define HV_MWAIT_AVAILABLE                      (1u << 0)
+#define HV_GUEST_DEBUGGING_AVAILABLE            (1u << 1)
+#define HV_PERF_MONITOR_AVAILABLE               (1u << 2)
+#define HV_CPU_DYNAMIC_PARTITIONING_AVAILABLE   (1u << 3)
+#define HV_HYPERCALL_PARAMS_XMM_AVAILABLE       (1u << 4)
+#define HV_GUEST_IDLE_STATE_AVAILABLE           (1u << 5)
+#define HV_FREQUENCY_MSRS_AVAILABLE             (1u << 8)
+#define HV_GUEST_CRASH_MSR_AVAILABLE            (1u << 10)
+#define HV_STIMER_DIRECT_MODE_AVAILABLE         (1u << 19)
+
+/*
+ * HV_CPUID_ENLIGHTMENT_INFO.EAX bits
+ */
+#define HV_AS_SWITCH_RECOMMENDED            (1u << 0)
+#define HV_LOCAL_TLB_FLUSH_RECOMMENDED      (1u << 1)
+#define HV_REMOTE_TLB_FLUSH_RECOMMENDED     (1u << 2)
+#define HV_APIC_ACCESS_RECOMMENDED          (1u << 3)
+#define HV_SYSTEM_RESET_RECOMMENDED         (1u << 4)
+#define HV_RELAXED_TIMING_RECOMMENDED       (1u << 5)
+#define HV_CLUSTER_IPI_RECOMMENDED          (1u << 10)
+#define HV_EX_PROCESSOR_MASKS_RECOMMENDED   (1u << 11)
+#define HV_ENLIGHTENED_VMCS_RECOMMENDED     (1u << 14)
+#define HV_NO_NONARCH_CORESHARING           (1u << 18)
+
+/*
+ * Basic virtualized MSRs
+ */
+#define HV_X64_MSR_GUEST_OS_ID                0x40000000
+#define HV_X64_MSR_HYPERCALL                  0x40000001
+#define HV_X64_MSR_VP_INDEX                   0x40000002
+#define HV_X64_MSR_RESET                      0x40000003
+#define HV_X64_MSR_VP_RUNTIME                 0x40000010
+#define HV_X64_MSR_TIME_REF_COUNT             0x40000020
+#define HV_X64_MSR_REFERENCE_TSC              0x40000021
+#define HV_X64_MSR_TSC_FREQUENCY              0x40000022
+#define HV_X64_MSR_APIC_FREQUENCY             0x40000023
+
+/*
+ * Virtual APIC MSRs
+ */
+#define HV_X64_MSR_EOI                        0x40000070
+#define HV_X64_MSR_ICR                        0x40000071
+#define HV_X64_MSR_TPR                        0x40000072
+#define HV_X64_MSR_APIC_ASSIST_PAGE           0x40000073
+
+/*
+ * Synthetic interrupt controller MSRs
+ */
+#define HV_X64_MSR_SCONTROL                   0x40000080
+#define HV_X64_MSR_SVERSION                   0x40000081
+#define HV_X64_MSR_SIEFP                      0x40000082
+#define HV_X64_MSR_SIMP                       0x40000083
+#define HV_X64_MSR_EOM                        0x40000084
+#define HV_X64_MSR_SINT0                      0x40000090
+#define HV_X64_MSR_SINT1                      0x40000091
+#define HV_X64_MSR_SINT2                      0x40000092
+#define HV_X64_MSR_SINT3                      0x40000093
+#define HV_X64_MSR_SINT4                      0x40000094
+#define HV_X64_MSR_SINT5                      0x40000095
+#define HV_X64_MSR_SINT6                      0x40000096
+#define HV_X64_MSR_SINT7                      0x40000097
+#define HV_X64_MSR_SINT8                      0x40000098
+#define HV_X64_MSR_SINT9                      0x40000099
+#define HV_X64_MSR_SINT10                     0x4000009A
+#define HV_X64_MSR_SINT11                     0x4000009B
+#define HV_X64_MSR_SINT12                     0x4000009C
+#define HV_X64_MSR_SINT13                     0x4000009D
+#define HV_X64_MSR_SINT14                     0x4000009E
+#define HV_X64_MSR_SINT15                     0x4000009F
+
+/*
+ * Synthetic timer MSRs
+ */
+#define HV_X64_MSR_STIMER0_CONFIG               0x400000B0
+#define HV_X64_MSR_STIMER0_COUNT                0x400000B1
+#define HV_X64_MSR_STIMER1_CONFIG               0x400000B2
+#define HV_X64_MSR_STIMER1_COUNT                0x400000B3
+#define HV_X64_MSR_STIMER2_CONFIG               0x400000B4
+#define HV_X64_MSR_STIMER2_COUNT                0x400000B5
+#define HV_X64_MSR_STIMER3_CONFIG               0x400000B6
+#define HV_X64_MSR_STIMER3_COUNT                0x400000B7
+
+/*
+ * Guest crash notification MSRs
+ */
+#define HV_X64_MSR_CRASH_P0                     0x40000100
+#define HV_X64_MSR_CRASH_P1                     0x40000101
+#define HV_X64_MSR_CRASH_P2                     0x40000102
+#define HV_X64_MSR_CRASH_P3                     0x40000103
+#define HV_X64_MSR_CRASH_P4                     0x40000104
+#define HV_CRASH_PARAMS    (HV_X64_MSR_CRASH_P4 - HV_X64_MSR_CRASH_P0 + 1)
+#define HV_X64_MSR_CRASH_CTL                    0x40000105
+#define HV_CRASH_CTL_NOTIFY                     (1ull << 63)
+
+/*
+ * Reenlightenment notification MSRs
+ */
+#define HV_X64_MSR_REENLIGHTENMENT_CONTROL      0x40000106
+#define HV_X64_MSR_TSC_EMULATION_CONTROL        0x40000107
+#define HV_X64_MSR_TSC_EMULATION_STATUS         0x40000108
+
+/*
+ * Hypercall MSR bits
+ */
+#define HV_HYPERCALL_ENABLE                   (1u << 0)
+
+/*
+ * Synthetic interrupt controller definitions
+ */
+#define HV_SYNIC_VERSION                      1
+#define HV_SYNIC_ENABLE                       (1u << 0)
+#define HV_SIMP_ENABLE                        (1u << 0)
+#define HV_SIEFP_ENABLE                       (1u << 0)
+#define HV_SINT_MASKED                        (1u << 16)
+#define HV_SINT_AUTO_EOI                      (1u << 17)
+#define HV_SINT_VECTOR_MASK                   0xff
+
+#define HV_STIMER_COUNT                       4
+
+
+#endif

target/i386/kvm/hyperv-stub.c

@@ -0,0 +1,48 @@
+/*
+ * Stubs for CONFIG_HYPERV=n
+ *
+ * Copyright (c) 2015-2018 Virtuozzo International GmbH.
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#include "qemu/osdep.h"
+#include "hyperv.h"
+
+#ifdef CONFIG_KVM
+int kvm_hv_handle_exit(X86CPU *cpu, struct kvm_hyperv_exit *exit)
+{
+    switch (exit->type) {
+    case KVM_EXIT_HYPERV_SYNIC:
+        if (!hyperv_feat_enabled(cpu, HYPERV_FEAT_SYNIC)) {
+            return -1;
+        }
+
+        /*
+         * Tracking the changes in the MSRs is unnecessary as there are no
+         * users for them beside save/load, which is handled nicely by the
+         * generic MSR save/load code
+         */
+        return 0;
+    case KVM_EXIT_HYPERV_HCALL:
+        exit->u.hcall.result = HV_STATUS_INVALID_HYPERCALL_CODE;
+        return 0;
+    default:
+        return -1;
+    }
+}
+#endif
+
+int hyperv_x86_synic_add(X86CPU *cpu)
+{
+    return -ENOSYS;
+}
+
+void hyperv_x86_synic_reset(X86CPU *cpu)
+{
+}
+
+void hyperv_x86_synic_update(X86CPU *cpu)
+{
+}

target/i386/kvm/hyperv.c

@@ -0,0 +1,101 @@
+/*
+ * QEMU KVM Hyper-V support
+ *
+ * Copyright (C) 2015 Andrey Smetanin <asmetanin@virtuozzo.com>
+ *
+ * Authors:
+ *  Andrey Smetanin <asmetanin@virtuozzo.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ *
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/main-loop.h"
+#include "hyperv.h"
+#include "hw/hyperv/hyperv.h"
+#include "hyperv-proto.h"
+
+int hyperv_x86_synic_add(X86CPU *cpu)
+{
+    hyperv_synic_add(CPU(cpu));
+    return 0;
+}
+
+void hyperv_x86_synic_reset(X86CPU *cpu)
+{
+    hyperv_synic_reset(CPU(cpu));
+}
+
+void hyperv_x86_synic_update(X86CPU *cpu)
+{
+    CPUX86State *env = &cpu->env;
+    bool enable = env->msr_hv_synic_control & HV_SYNIC_ENABLE;
+    hwaddr msg_page_addr = (env->msr_hv_synic_msg_page & HV_SIMP_ENABLE) ?
+        (env->msr_hv_synic_msg_page & TARGET_PAGE_MASK) : 0;
+    hwaddr event_page_addr = (env->msr_hv_synic_evt_page & HV_SIEFP_ENABLE) ?
+        (env->msr_hv_synic_evt_page & TARGET_PAGE_MASK) : 0;
+    hyperv_synic_update(CPU(cpu), enable, msg_page_addr, event_page_addr);
+}
+
+static void async_synic_update(CPUState *cs, run_on_cpu_data data)
+{
+    qemu_mutex_lock_iothread();
+    hyperv_x86_synic_update(X86_CPU(cs));
+    qemu_mutex_unlock_iothread();
+}
+
+int kvm_hv_handle_exit(X86CPU *cpu, struct kvm_hyperv_exit *exit)
+{
+    CPUX86State *env = &cpu->env;
+
+    switch (exit->type) {
+    case KVM_EXIT_HYPERV_SYNIC:
+        if (!hyperv_feat_enabled(cpu, HYPERV_FEAT_SYNIC)) {
+            return -1;
+        }
+
+        switch (exit->u.synic.msr) {
+        case HV_X64_MSR_SCONTROL:
+            env->msr_hv_synic_control = exit->u.synic.control;
+            break;
+        case HV_X64_MSR_SIMP:
+            env->msr_hv_synic_msg_page = exit->u.synic.msg_page;
+            break;
+        case HV_X64_MSR_SIEFP:
+            env->msr_hv_synic_evt_page = exit->u.synic.evt_page;
+            break;
+        default:
+            return -1;
+        }
+
+        /*
+         * this will run in this cpu thread before it returns to KVM, but in a
+         * safe environment (i.e. when all cpus are quiescent) -- this is
+         * necessary because memory hierarchy is being changed
+         */
+        async_safe_run_on_cpu(CPU(cpu), async_synic_update, RUN_ON_CPU_NULL);
+
+        return 0;
+    case KVM_EXIT_HYPERV_HCALL: {
+        uint16_t code = exit->u.hcall.input & 0xffff;
+        bool fast = exit->u.hcall.input & HV_HYPERCALL_FAST;
+        uint64_t param = exit->u.hcall.params[0];
+
+        switch (code) {
+        case HV_POST_MESSAGE:
+            exit->u.hcall.result = hyperv_hcall_post_message(param, fast);
+            break;
+        case HV_SIGNAL_EVENT:
+            exit->u.hcall.result = hyperv_hcall_signal_event(param, fast);
+            break;
+        default:
+            exit->u.hcall.result = HV_STATUS_INVALID_HYPERCALL_CODE;
+        }
+        return 0;
+    }
+    default:
+        return -1;
+    }
+}

target/i386/kvm/hyperv.h

@@ -0,0 +1,29 @@
+/*
+ * QEMU KVM Hyper-V support
+ *
+ * Copyright (C) 2015 Andrey Smetanin <asmetanin@virtuozzo.com>
+ *
+ * Authors:
+ *  Andrey Smetanin <asmetanin@virtuozzo.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ *
+ */
+
+#ifndef TARGET_I386_HYPERV_H
+#define TARGET_I386_HYPERV_H
+
+#include "cpu.h"
+#include "sysemu/kvm.h"
+#include "hw/hyperv/hyperv.h"
+
+#ifdef CONFIG_KVM
+int kvm_hv_handle_exit(X86CPU *cpu, struct kvm_hyperv_exit *exit);
+#endif
+
+int hyperv_x86_synic_add(X86CPU *cpu);
+void hyperv_x86_synic_reset(X86CPU *cpu);
+void hyperv_x86_synic_update(X86CPU *cpu);
+
+#endif

target/i386/kvm/kvm-stub.c

@@ -0,0 +1,41 @@
+/*
+ * QEMU KVM x86 specific function stubs
+ *
+ * Copyright Linaro Limited 2012
+ *
+ * Author: Peter Maydell <peter.maydell@linaro.org>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ *
+ */
+#include "qemu/osdep.h"
+#include "cpu.h"
+#include "kvm_i386.h"
+
+#ifndef __OPTIMIZE__
+bool kvm_has_smm(void)
+{
+    return 1;
+}
+
+bool kvm_enable_x2apic(void)
+{
+    return false;
+}
+
+/* This function is only called inside conditionals which we
+ * rely on the compiler to optimize out when CONFIG_KVM is not
+ * defined.
+ */
+uint32_t kvm_arch_get_supported_cpuid(KVMState *env, uint32_t function,
+                                      uint32_t index, int reg)
+{
+    abort();
+}
+#endif
+
+bool kvm_hv_vpindex_settable(void)
+{
+    return false;
+}

target/i386/kvm/kvm_i386.h

@@ -0,0 +1,53 @@
+/*
+ * QEMU KVM support -- x86 specific functions.
+ *
+ * Copyright (c) 2012 Linaro Limited
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ *
+ */
+
+#ifndef QEMU_KVM_I386_H
+#define QEMU_KVM_I386_H
+
+#include "sysemu/kvm.h"
+
+#define kvm_apic_in_kernel() (kvm_irqchip_in_kernel())
+
+#ifdef CONFIG_KVM
+
+#define kvm_pit_in_kernel() \
+    (kvm_irqchip_in_kernel() && !kvm_irqchip_is_split())
+#define kvm_pic_in_kernel()  \
+    (kvm_irqchip_in_kernel() && !kvm_irqchip_is_split())
+#define kvm_ioapic_in_kernel() \
+    (kvm_irqchip_in_kernel() && !kvm_irqchip_is_split())
+
+#else
+
+#define kvm_pit_in_kernel()      0
+#define kvm_pic_in_kernel()      0
+#define kvm_ioapic_in_kernel()   0
+
+#endif  /* CONFIG_KVM */
+
+bool kvm_has_smm(void);
+bool kvm_has_adjust_clock(void);
+bool kvm_has_adjust_clock_stable(void);
+bool kvm_has_exception_payload(void);
+void kvm_synchronize_all_tsc(void);
+void kvm_arch_reset_vcpu(X86CPU *cs);
+void kvm_arch_do_init_vcpu(X86CPU *cs);
+
+void kvm_put_apicbase(X86CPU *cpu, uint64_t value);
+
+bool kvm_enable_x2apic(void);
+bool kvm_has_x2apic_api(void);
+bool kvm_has_waitpkg(void);
+
+bool kvm_hv_vpindex_settable(void);
+
+uint64_t kvm_swizzle_msi_ext_dest_id(uint64_t address);
+
+#endif

target/i386/kvm/meson.build

@@ -0,0 +1,3 @@
+i386_ss.add(when: 'CONFIG_KVM', if_false: files('kvm-stub.c'))
+i386_softmmu_ss.add(when: 'CONFIG_KVM', if_true: files('kvm.c'))
+i386_softmmu_ss.add(when: 'CONFIG_HYPERV', if_true: files('hyperv.c'), if_false: files('hyperv-stub.c'))

target/i386/kvm/trace-events

@@ -0,0 +1,7 @@
+# See docs/devel/tracing.txt for syntax documentation.
+
+# kvm.c
+kvm_x86_fixup_msi_error(uint32_t gsi) "VT-d failed to remap interrupt for GSI %" PRIu32
+kvm_x86_add_msi_route(int virq) "Adding route entry for virq %d"
+kvm_x86_remove_msi_route(int virq) "Removing route entry for virq %d"
+kvm_x86_update_msi_routes(int num) "Updated %d MSI routes"

target/i386/kvm/trace.h

@@ -0,0 +1 @@
+#include "trace/trace-target_i386_kvm.h"