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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2023, Google LLC.
*/
#include <sys/ioctl.h>
#include "test_util.h"
#include "kvm_util.h"
#include "vmx.h"
void test_hwcr_bit(struct kvm_vcpu *vcpu, unsigned int bit)
{
const uint64_t ignored = BIT_ULL(3) | BIT_ULL(6) | BIT_ULL(8);
const uint64_t valid = BIT_ULL(18) | BIT_ULL(24);
const uint64_t legal = ignored | valid;
uint64_t val = BIT_ULL(bit);
uint64_t actual;
int r;
r = _vcpu_set_msr(vcpu, MSR_K7_HWCR, val);
TEST_ASSERT(val & ~legal ? !r : r == 1,
"Expected KVM_SET_MSRS(MSR_K7_HWCR) = 0x%lx to %s",
val, val & ~legal ? "fail" : "succeed");
actual = vcpu_get_msr(vcpu, MSR_K7_HWCR);
TEST_ASSERT(actual == (val & valid),
"Bit %u: unexpected HWCR 0x%lx; expected 0x%lx",
bit, actual, (val & valid));
vcpu_set_msr(vcpu, MSR_K7_HWCR, 0);
}
int main(int argc, char *argv[])
{
struct kvm_vm *vm;
struct kvm_vcpu *vcpu;
unsigned int bit;
vm = vm_create_with_one_vcpu(&vcpu, NULL);
for (bit = 0; bit < BITS_PER_LONG; bit++)
test_hwcr_bit(vcpu, bit);
kvm_vm_free(vm);
}
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