mirror of
https://github.com/projectacrn/acrn-hypervisor.git
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83587b7711
There are two prefix (aka TRC and TRACE) for trace event. This patch make all the trace event prefix consist with TRACE. No functional change. Signed-off-by: Kaige Fu <kaige.fu@intel.com> Acked-by: Eddie Dong <eddie.dong@intel.com>
158 lines
3.5 KiB
C
158 lines
3.5 KiB
C
/*
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* Copyright (C) 2018 Intel Corporation. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <hypervisor.h>
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#include <hypercall.h>
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/*
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* Pass return value to SOS by register rax.
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* This function should always return 0 since we shouldn't
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* deal with hypercall error in hypervisor.
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*/
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int vmcall_vmexit_handler(struct vcpu *vcpu)
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{
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int64_t ret = -EACCES;
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struct vm *vm = vcpu->vm;
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struct run_context *cur_context =
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&vcpu->arch_vcpu.contexts[vcpu->arch_vcpu.cur_context];
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/* hypercall ID from guest*/
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uint64_t hypcall_id = cur_context->guest_cpu_regs.regs.r8;
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/* hypercall param1 from guest*/
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uint64_t param1 = cur_context->guest_cpu_regs.regs.rdi;
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/* hypercall param2 from guest*/
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uint64_t param2 = cur_context->guest_cpu_regs.regs.rsi;
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/* hypercall param3 from guest, reserved*/
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/* uint64_t param3 = cur_context->guest_cpu_regs.regs.rdx; */
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/* hypercall param4 from guest, reserved*/
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/* uint64_t param4 = cur_context->guest_cpu_regs.regs.rcx; */
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if (!is_hypercall_from_ring0()) {
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pr_err("hypercall is only allowed from RING-0!\n");
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goto out;
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}
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if (!is_vm0(vm) && hypcall_id != HC_WORLD_SWITCH &&
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hypcall_id != HC_INITIALIZE_TRUSTY) {
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pr_err("hypercall %d is only allowed from VM0!\n", hypcall_id);
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goto out;
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}
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/* Dispatch the hypercall handler */
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switch (hypcall_id) {
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case HC_GET_API_VERSION:
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/* vm0 will call HC_GET_API_VERSION as first hypercall, fixup
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* vm0 vcpu here.
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*/
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vm_fixup(vm);
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ret = hcall_get_api_version(vm, param1);
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break;
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case HC_CREATE_VM:
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ret = hcall_create_vm(vm, param1);
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break;
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case HC_DESTROY_VM:
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ret = hcall_destroy_vm(param1);
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break;
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case HC_START_VM:
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ret = hcall_resume_vm(param1);
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break;
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case HC_PAUSE_VM:
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ret = hcall_pause_vm(param1);
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break;
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case HC_CREATE_VCPU:
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ret = hcall_create_vcpu(vm, param1, param2);
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break;
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case HC_ASSERT_IRQLINE:
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ret = hcall_assert_irqline(vm, param1, param2);
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break;
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case HC_DEASSERT_IRQLINE:
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ret = hcall_deassert_irqline(vm, param1, param2);
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break;
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case HC_PULSE_IRQLINE:
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ret = hcall_pulse_irqline(vm, param1, param2);
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break;
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case HC_INJECT_MSI:
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ret = hcall_inject_msi(vm, param1, param2);
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break;
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case HC_SET_IOREQ_BUFFER:
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ret = hcall_set_ioreq_buffer(vm, param1, param2);
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break;
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case HC_NOTIFY_REQUEST_FINISH:
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ret = hcall_notify_req_finish(param1, param2);
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break;
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case HC_VM_SET_MEMMAP:
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ret = hcall_set_vm_memmap(vm, param1, param2);
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break;
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case HC_VM_SET_MEMMAPS:
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ret = hcall_set_vm_memmaps(vm, param1);
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break;
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case HC_VM_PCI_MSIX_REMAP:
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ret = hcall_remap_pci_msix(vm, param1, param2);
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break;
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case HC_VM_GPA2HPA:
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ret = hcall_gpa_to_hpa(vm, param1, param2);
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break;
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case HC_ASSIGN_PTDEV:
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ret = hcall_assign_ptdev(vm, param1, param2);
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break;
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case HC_DEASSIGN_PTDEV:
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ret = hcall_deassign_ptdev(vm, param1, param2);
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break;
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case HC_SET_PTDEV_INTR_INFO:
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ret = hcall_set_ptdev_intr_info(vm, param1, param2);
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break;
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case HC_RESET_PTDEV_INTR_INFO:
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ret = hcall_reset_ptdev_intr_info(vm, param1, param2);
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break;
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case HC_SETUP_SBUF:
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ret = hcall_setup_sbuf(vm, param1);
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break;
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case HC_WORLD_SWITCH:
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ret = hcall_world_switch(vcpu);
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break;
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case HC_INITIALIZE_TRUSTY:
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ret = hcall_initialize_trusty(vcpu, param1);
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break;
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case HC_PM_GET_CPU_STATE:
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ret = hcall_get_cpu_pm_state(vm, param1, param2);
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break;
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default:
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pr_err("op %d: Invalid hypercall\n", hypcall_id);
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ret = -EPERM;
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break;
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}
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out:
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cur_context->guest_cpu_regs.regs.rax = ret;
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TRACE_2L(TRACE_VMEXIT_VMCALL, vm->attr.id, hypcall_id);
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return 0;
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}
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