mirror of
https://github.com/torvalds/linux.git
synced 2026-04-19 23:34:00 -04:00
7ce7f8e754
Drop the param-based guest assert macros and enable the printf versions for all selftests. Note! This change can affect tests even if they don't use directly use guest asserts! E.g. via library code, or due to the compiler making different optimization decisions. Link: https://lore.kernel.org/r/20230729003643.1053367-33-seanjc@google.com Signed-off-by: Sean Christopherson <seanjc@google.com>
97 lines
2.4 KiB
C
97 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(uc);
|
|
break;
|
|
case UCALL_DONE:
|
|
break;
|
|
default:
|
|
TEST_FAIL("Unhandled ucall: %ld", uc.cmd);
|
|
}
|
|
|
|
kvm_vm_free(vm);
|
|
return 0;
|
|
}
|