Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Thomas Huth | 897 | 84.15% | 3 | 30.00% |
Sean Christopherson | 76 | 7.13% | 3 | 30.00% |
Collin Walling | 72 | 6.75% | 1 | 10.00% |
Christian Bornträger | 12 | 1.13% | 2 | 20.00% |
Vipin Sharma | 9 | 0.84% | 1 | 10.00% |
Total | 1066 | 10 |
// SPDX-License-Identifier: GPL-2.0-only /* * Test for s390x KVM_CAP_SYNC_REGS * * Based on the same test for x86: * Copyright (C) 2018, Google LLC. * * Adaptions for s390x: * Copyright (C) 2019, Red Hat, Inc. * * Test expected behavior of the KVM_CAP_SYNC_REGS functionality. */ #define _GNU_SOURCE /* for program_invocation_short_name */ #include <fcntl.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <sys/ioctl.h> #include "test_util.h" #include "kvm_util.h" #include "diag318_test_handler.h" #include "kselftest.h" static void guest_code(void) { /* * We embed diag 501 here instead of doing a ucall to avoid that * the compiler has messed with r11 at the time of the ucall. */ asm volatile ( "0: diag 0,0,0x501\n" " ahi 11,1\n" " j 0b\n" ); } #define REG_COMPARE(reg) \ TEST_ASSERT(left->reg == right->reg, \ "Register " #reg \ " values did not match: 0x%llx, 0x%llx\n", \ left->reg, right->reg) #define REG_COMPARE32(reg) \ TEST_ASSERT(left->reg == right->reg, \ "Register " #reg \ " values did not match: 0x%x, 0x%x\n", \ left->reg, right->reg) static void compare_regs(struct kvm_regs *left, struct kvm_sync_regs *right) { int i; for (i = 0; i < 16; i++) REG_COMPARE(gprs[i]); } static void compare_sregs(struct kvm_sregs *left, struct kvm_sync_regs *right) { int i; for (i = 0; i < 16; i++) REG_COMPARE32(acrs[i]); for (i = 0; i < 16; i++) REG_COMPARE(crs[i]); } #undef REG_COMPARE #define TEST_SYNC_FIELDS (KVM_SYNC_GPRS|KVM_SYNC_ACRS|KVM_SYNC_CRS|KVM_SYNC_DIAG318) #define INVALID_SYNC_FIELD 0x80000000 void test_read_invalid(struct kvm_vcpu *vcpu) { struct kvm_run *run = vcpu->run; int rv; /* Request reading invalid register set from VCPU. */ run->kvm_valid_regs = INVALID_SYNC_FIELD; rv = _vcpu_run(vcpu); TEST_ASSERT(rv < 0 && errno == EINVAL, "Invalid kvm_valid_regs did not cause expected KVM_RUN error: %d\n", rv); run->kvm_valid_regs = 0; run->kvm_valid_regs = INVALID_SYNC_FIELD | TEST_SYNC_FIELDS; rv = _vcpu_run(vcpu); TEST_ASSERT(rv < 0 && errno == EINVAL, "Invalid kvm_valid_regs did not cause expected KVM_RUN error: %d\n", rv); run->kvm_valid_regs = 0; } void test_set_invalid(struct kvm_vcpu *vcpu) { struct kvm_run *run = vcpu->run; int rv; /* Request setting invalid register set into VCPU. */ run->kvm_dirty_regs = INVALID_SYNC_FIELD; rv = _vcpu_run(vcpu); TEST_ASSERT(rv < 0 && errno == EINVAL, "Invalid kvm_dirty_regs did not cause expected KVM_RUN error: %d\n", rv); run->kvm_dirty_regs = 0; run->kvm_dirty_regs = INVALID_SYNC_FIELD | TEST_SYNC_FIELDS; rv = _vcpu_run(vcpu); TEST_ASSERT(rv < 0 && errno == EINVAL, "Invalid kvm_dirty_regs did not cause expected KVM_RUN error: %d\n", rv); run->kvm_dirty_regs = 0; } void test_req_and_verify_all_valid_regs(struct kvm_vcpu *vcpu) { struct kvm_run *run = vcpu->run; struct kvm_sregs sregs; struct kvm_regs regs; int rv; /* Request and verify all valid register sets. */ run->kvm_valid_regs = TEST_SYNC_FIELDS; rv = _vcpu_run(vcpu); TEST_ASSERT(rv == 0, "vcpu_run failed: %d\n", rv); TEST_ASSERT_KVM_EXIT_REASON(vcpu, KVM_EXIT_S390_SIEIC); TEST_ASSERT(run->s390_sieic.icptcode == 4 && (run->s390_sieic.ipa >> 8) == 0x83 && (run->s390_sieic.ipb >> 16) == 0x501, "Unexpected interception code: ic=%u, ipa=0x%x, ipb=0x%x\n", run->s390_sieic.icptcode, run->s390_sieic.ipa, run->s390_sieic.ipb); vcpu_regs_get(vcpu, ®s); compare_regs(®s, &run->s.regs); vcpu_sregs_get(vcpu, &sregs); compare_sregs(&sregs, &run->s.regs); } void test_set_and_verify_various_reg_values(struct kvm_vcpu *vcpu) { struct kvm_run *run = vcpu->run; struct kvm_sregs sregs; struct kvm_regs regs; int rv; /* Set and verify various register values */ run->s.regs.gprs[11] = 0xBAD1DEA; run->s.regs.acrs[0] = 1 << 11; run->kvm_valid_regs = TEST_SYNC_FIELDS; run->kvm_dirty_regs = KVM_SYNC_GPRS | KVM_SYNC_ACRS; if (get_diag318_info() > 0) { run->s.regs.diag318 = get_diag318_info(); run->kvm_dirty_regs |= KVM_SYNC_DIAG318; } rv = _vcpu_run(vcpu); TEST_ASSERT(rv == 0, "vcpu_run failed: %d\n", rv); TEST_ASSERT_KVM_EXIT_REASON(vcpu, KVM_EXIT_S390_SIEIC); TEST_ASSERT(run->s.regs.gprs[11] == 0xBAD1DEA + 1, "r11 sync regs value incorrect 0x%llx.", run->s.regs.gprs[11]); TEST_ASSERT(run->s.regs.acrs[0] == 1 << 11, "acr0 sync regs value incorrect 0x%x.", run->s.regs.acrs[0]); TEST_ASSERT(run->s.regs.diag318 == get_diag318_info(), "diag318 sync regs value incorrect 0x%llx.", run->s.regs.diag318); vcpu_regs_get(vcpu, ®s); compare_regs(®s, &run->s.regs); vcpu_sregs_get(vcpu, &sregs); compare_sregs(&sregs, &run->s.regs); } void test_clear_kvm_dirty_regs_bits(struct kvm_vcpu *vcpu) { struct kvm_run *run = vcpu->run; int rv; /* Clear kvm_dirty_regs bits, verify new s.regs values are * overwritten with existing guest values. */ run->kvm_valid_regs = TEST_SYNC_FIELDS; run->kvm_dirty_regs = 0; run->s.regs.gprs[11] = 0xDEADBEEF; run->s.regs.diag318 = 0x4B1D; rv = _vcpu_run(vcpu); TEST_ASSERT(rv == 0, "vcpu_run failed: %d\n", rv); TEST_ASSERT_KVM_EXIT_REASON(vcpu, KVM_EXIT_S390_SIEIC); TEST_ASSERT(run->s.regs.gprs[11] != 0xDEADBEEF, "r11 sync regs value incorrect 0x%llx.", run->s.regs.gprs[11]); TEST_ASSERT(run->s.regs.diag318 != 0x4B1D, "diag318 sync regs value incorrect 0x%llx.", run->s.regs.diag318); } struct testdef { const char *name; void (*test)(struct kvm_vcpu *vcpu); } testlist[] = { { "read invalid", test_read_invalid }, { "set invalid", test_set_invalid }, { "request+verify all valid regs", test_req_and_verify_all_valid_regs }, { "set+verify various regs", test_set_and_verify_various_reg_values }, { "clear kvm_dirty_regs bits", test_clear_kvm_dirty_regs_bits }, }; int main(int argc, char *argv[]) { struct kvm_vcpu *vcpu; struct kvm_vm *vm; int idx; TEST_REQUIRE(kvm_has_cap(KVM_CAP_SYNC_REGS)); ksft_print_header(); ksft_set_plan(ARRAY_SIZE(testlist)); /* Create VM */ vm = vm_create_with_one_vcpu(&vcpu, guest_code); for (idx = 0; idx < ARRAY_SIZE(testlist); idx++) { testlist[idx].test(vcpu); ksft_test_result_pass("%s\n", testlist[idx].name); } kvm_vm_free(vm); ksft_finished(); /* Print results and exit() accordingly */ }
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