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1// SPDX-License-Identifier: GPL-2.02/*3 * Copyright (C) 2023, Google LLC.4 */5#include <sys/ioctl.h>6 7#include "test_util.h"8#include "kvm_util.h"9#include "vmx.h"10 11void test_hwcr_bit(struct kvm_vcpu *vcpu, unsigned int bit)12{13	const uint64_t ignored = BIT_ULL(3) | BIT_ULL(6) | BIT_ULL(8);14	const uint64_t valid = BIT_ULL(18) | BIT_ULL(24);15	const uint64_t legal = ignored | valid;16	uint64_t val = BIT_ULL(bit);17	uint64_t actual;18	int r;19 20	r = _vcpu_set_msr(vcpu, MSR_K7_HWCR, val);21	TEST_ASSERT(val & ~legal ? !r : r == 1,22		    "Expected KVM_SET_MSRS(MSR_K7_HWCR) = 0x%lx to %s",23		    val, val & ~legal ? "fail" : "succeed");24 25	actual = vcpu_get_msr(vcpu, MSR_K7_HWCR);26	TEST_ASSERT(actual == (val & valid),27		    "Bit %u: unexpected HWCR 0x%lx; expected 0x%lx",28		    bit, actual, (val & valid));29 30	vcpu_set_msr(vcpu, MSR_K7_HWCR, 0);31}32 33int main(int argc, char *argv[])34{35	struct kvm_vm *vm;36	struct kvm_vcpu *vcpu;37	unsigned int bit;38 39	vm = vm_create_with_one_vcpu(&vcpu, NULL);40 41	for (bit = 0; bit < BITS_PER_LONG; bit++)42		test_hwcr_bit(vcpu, bit);43 44	kvm_vm_free(vm);45}46