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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