98 lines
2.4 KiB
C
98 lines
2.4 KiB
C
|
// SPDX-License-Identifier: GPL-2.0-only
|
||
|
|
/*
|
||
|
|
* Test Hyper-V extended hypercall, HV_EXT_CALL_QUERY_CAPABILITIES (0x8001),
|
||
|
|
* exit to userspace and receive result in guest.
|
||
|
|
*
|
||
|
|
* Negative tests are present in hyperv_features.c
|
||
|
|
*
|
||
|
|
* Copyright 2022 Google LLC
|
||
|
|
* Author: Vipin Sharma <vipinsh@google.com>
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "kvm_util.h"
|
||
|
|
#include "processor.h"
|
||
|
|
#include "hyperv.h"
|
||
|
|
|
||
|
|
/* Any value is fine */
|
||
|
|
#define EXT_CAPABILITIES 0xbull
|
||
|
|
|
||
|
|
static void guest_code(vm_paddr_t in_pg_gpa, vm_paddr_t out_pg_gpa,
|
||
|
|
vm_vaddr_t out_pg_gva)
|
||
|
|
{
|
||
|
|
uint64_t *output_gva;
|
||
|
|
|
||
|
|
wrmsr(HV_X64_MSR_GUEST_OS_ID, HYPERV_LINUX_OS_ID);
|
||
|
|
wrmsr(HV_X64_MSR_HYPERCALL, in_pg_gpa);
|
||
|
|
|
||
|
|
output_gva = (uint64_t *)out_pg_gva;
|
||
|
|
|
||
|
|
hyperv_hypercall(HV_EXT_CALL_QUERY_CAPABILITIES, in_pg_gpa, out_pg_gpa);
|
||
|
|
|
||
|
|
/* TLFS states output will be a uint64_t value */
|
||
|
|
GUEST_ASSERT_EQ(*output_gva, EXT_CAPABILITIES);
|
||
|
|
|
||
|
|
GUEST_DONE();
|
||
|
|
}
|
||
|
|
|
||
|
|
int main(void)
|
||
|
|
{
|
||
|
|
vm_vaddr_t hcall_out_page;
|
||
|
|
vm_vaddr_t hcall_in_page;
|
||
|
|
struct kvm_vcpu *vcpu;
|
||
|
|
struct kvm_run *run;
|
||
|
|
struct kvm_vm *vm;
|
||
|
|
uint64_t *outval;
|
||
|
|
struct ucall uc;
|
||
|
|
|
||
|
|
/* Verify if extended hypercalls are supported */
|
||
|
|
if (!kvm_cpuid_has(kvm_get_supported_hv_cpuid(),
|
||
|
|
HV_ENABLE_EXTENDED_HYPERCALLS)) {
|
||
|
|
print_skip("Extended calls not supported by the kernel");
|
||
|
|
exit(KSFT_SKIP);
|
||
|
|
}
|
||
|
|
|
||
|
|
vm = vm_create_with_one_vcpu(&vcpu, guest_code);
|
||
|
|
run = vcpu->run;
|
||
|
|
vcpu_set_hv_cpuid(vcpu);
|
||
|
|
|
||
|
|
/* Hypercall input */
|
||
|
|
hcall_in_page = vm_vaddr_alloc_pages(vm, 1);
|
||
|
|
memset(addr_gva2hva(vm, hcall_in_page), 0x0, vm->page_size);
|
||
|
|
|
||
|
|
/* Hypercall output */
|
||
|
|
hcall_out_page = vm_vaddr_alloc_pages(vm, 1);
|
||
|
|
memset(addr_gva2hva(vm, hcall_out_page), 0x0, vm->page_size);
|
||
|
|
|
||
|
|
vcpu_args_set(vcpu, 3, addr_gva2gpa(vm, hcall_in_page),
|
||
|
|
addr_gva2gpa(vm, hcall_out_page), hcall_out_page);
|
||
|
|
|
||
|
|
vcpu_run(vcpu);
|
||
|
|
|
||
|
|
TEST_ASSERT(run->exit_reason == KVM_EXIT_HYPERV,
|
||
|
|
"Unexpected exit reason: %u (%s)",
|
||
|
|
run->exit_reason, exit_reason_str(run->exit_reason));
|
||
|
|
|
||
|
|
outval = addr_gpa2hva(vm, run->hyperv.u.hcall.params[1]);
|
||
|
|
*outval = EXT_CAPABILITIES;
|
||
|
|
run->hyperv.u.hcall.result = HV_STATUS_SUCCESS;
|
||
|
|
|
||
|
|
vcpu_run(vcpu);
|
||
|
|
|
||
|
|
TEST_ASSERT(run->exit_reason == KVM_EXIT_IO,
|
||
|
|
"Unexpected exit reason: %u (%s)",
|
||
|
|
run->exit_reason, exit_reason_str(run->exit_reason));
|
||
|
|
|
||
|
|
switch (get_ucall(vcpu, &uc)) {
|
||
|
|
case UCALL_ABORT:
|
||
|
|
REPORT_GUEST_ASSERT_2(uc, "arg1 = %ld, arg2 = %ld");
|
||
|
|
break;
|
||
|
|
case UCALL_DONE:
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
TEST_FAIL("Unhandled ucall: %ld", uc.cmd);
|
||
|
|
}
|
||
|
|
|
||
|
|
kvm_vm_free(vm);
|
||
|
|
return 0;
|
||
|
|
}
|