diff options
Diffstat (limited to 'tools/testing/selftests/kvm/s390x/resets.c')
| -rw-r--r-- | tools/testing/selftests/kvm/s390x/resets.c | 279 |
1 files changed, 0 insertions, 279 deletions
diff --git a/tools/testing/selftests/kvm/s390x/resets.c b/tools/testing/selftests/kvm/s390x/resets.c deleted file mode 100644 index b143db6d8693..000000000000 --- a/tools/testing/selftests/kvm/s390x/resets.c +++ /dev/null @@ -1,279 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * Test for s390x CPU resets - * - * Copyright (C) 2020, IBM - */ - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <sys/ioctl.h> - -#include "test_util.h" -#include "kvm_util.h" - -#define VCPU_ID 3 -#define LOCAL_IRQS 32 - -struct kvm_s390_irq buf[VCPU_ID + LOCAL_IRQS]; - -struct kvm_vm *vm; -struct kvm_run *run; -struct kvm_sync_regs *sync_regs; -static uint8_t regs_null[512]; - -static void guest_code_initial(void) -{ - /* set several CRs to "safe" value */ - unsigned long cr2_59 = 0x10; /* enable guarded storage */ - unsigned long cr8_63 = 0x1; /* monitor mask = 1 */ - unsigned long cr10 = 1; /* PER START */ - unsigned long cr11 = -1; /* PER END */ - - - /* Dirty registers */ - asm volatile ( - " lghi 2,0x11\n" /* Round toward 0 */ - " sfpc 2\n" /* set fpc to !=0 */ - " lctlg 2,2,%0\n" - " lctlg 8,8,%1\n" - " lctlg 10,10,%2\n" - " lctlg 11,11,%3\n" - /* now clobber some general purpose regs */ - " llihh 0,0xffff\n" - " llihl 1,0x5555\n" - " llilh 2,0xaaaa\n" - " llill 3,0x0000\n" - /* now clobber a floating point reg */ - " lghi 4,0x1\n" - " cdgbr 0,4\n" - /* now clobber an access reg */ - " sar 9,4\n" - /* We embed diag 501 here to control register content */ - " diag 0,0,0x501\n" - : - : "m" (cr2_59), "m" (cr8_63), "m" (cr10), "m" (cr11) - /* no clobber list as this should not return */ - ); -} - -static void test_one_reg(uint64_t id, uint64_t value) -{ - struct kvm_one_reg reg; - uint64_t eval_reg; - - reg.addr = (uintptr_t)&eval_reg; - reg.id = id; - vcpu_get_reg(vm, VCPU_ID, ®); - TEST_ASSERT(eval_reg == value, "value == 0x%lx", value); -} - -static void assert_noirq(void) -{ - struct kvm_s390_irq_state irq_state; - int irqs; - - irq_state.len = sizeof(buf); - irq_state.buf = (unsigned long)buf; - irqs = _vcpu_ioctl(vm, VCPU_ID, KVM_S390_GET_IRQ_STATE, &irq_state); - /* - * irqs contains the number of retrieved interrupts. Any interrupt - * (notably, the emergency call interrupt we have injected) should - * be cleared by the resets, so this should be 0. - */ - TEST_ASSERT(irqs >= 0, "Could not fetch IRQs: errno %d\n", errno); - TEST_ASSERT(!irqs, "IRQ pending"); -} - -static void assert_clear(void) -{ - struct kvm_sregs sregs; - struct kvm_regs regs; - struct kvm_fpu fpu; - - vcpu_regs_get(vm, VCPU_ID, ®s); - TEST_ASSERT(!memcmp(®s.gprs, regs_null, sizeof(regs.gprs)), "grs == 0"); - - vcpu_sregs_get(vm, VCPU_ID, &sregs); - TEST_ASSERT(!memcmp(&sregs.acrs, regs_null, sizeof(sregs.acrs)), "acrs == 0"); - - vcpu_fpu_get(vm, VCPU_ID, &fpu); - TEST_ASSERT(!memcmp(&fpu.fprs, regs_null, sizeof(fpu.fprs)), "fprs == 0"); - - /* sync regs */ - TEST_ASSERT(!memcmp(sync_regs->gprs, regs_null, sizeof(sync_regs->gprs)), - "gprs0-15 == 0 (sync_regs)"); - - TEST_ASSERT(!memcmp(sync_regs->acrs, regs_null, sizeof(sync_regs->acrs)), - "acrs0-15 == 0 (sync_regs)"); - - TEST_ASSERT(!memcmp(sync_regs->vrs, regs_null, sizeof(sync_regs->vrs)), - "vrs0-15 == 0 (sync_regs)"); -} - -static void assert_initial_noclear(void) -{ - TEST_ASSERT(sync_regs->gprs[0] == 0xffff000000000000UL, - "gpr0 == 0xffff000000000000 (sync_regs)"); - TEST_ASSERT(sync_regs->gprs[1] == 0x0000555500000000UL, - "gpr1 == 0x0000555500000000 (sync_regs)"); - TEST_ASSERT(sync_regs->gprs[2] == 0x00000000aaaa0000UL, - "gpr2 == 0x00000000aaaa0000 (sync_regs)"); - TEST_ASSERT(sync_regs->gprs[3] == 0x0000000000000000UL, - "gpr3 == 0x0000000000000000 (sync_regs)"); - TEST_ASSERT(sync_regs->fprs[0] == 0x3ff0000000000000UL, - "fpr0 == 0f1 (sync_regs)"); - TEST_ASSERT(sync_regs->acrs[9] == 1, "ar9 == 1 (sync_regs)"); -} - -static void assert_initial(void) -{ - struct kvm_sregs sregs; - struct kvm_fpu fpu; - - /* KVM_GET_SREGS */ - vcpu_sregs_get(vm, VCPU_ID, &sregs); - TEST_ASSERT(sregs.crs[0] == 0xE0UL, "cr0 == 0xE0 (KVM_GET_SREGS)"); - TEST_ASSERT(sregs.crs[14] == 0xC2000000UL, - "cr14 == 0xC2000000 (KVM_GET_SREGS)"); - TEST_ASSERT(!memcmp(&sregs.crs[1], regs_null, sizeof(sregs.crs[1]) * 12), - "cr1-13 == 0 (KVM_GET_SREGS)"); - TEST_ASSERT(sregs.crs[15] == 0, "cr15 == 0 (KVM_GET_SREGS)"); - - /* sync regs */ - TEST_ASSERT(sync_regs->crs[0] == 0xE0UL, "cr0 == 0xE0 (sync_regs)"); - TEST_ASSERT(sync_regs->crs[14] == 0xC2000000UL, - "cr14 == 0xC2000000 (sync_regs)"); - TEST_ASSERT(!memcmp(&sync_regs->crs[1], regs_null, 8 * 12), - "cr1-13 == 0 (sync_regs)"); - TEST_ASSERT(sync_regs->crs[15] == 0, "cr15 == 0 (sync_regs)"); - TEST_ASSERT(sync_regs->fpc == 0, "fpc == 0 (sync_regs)"); - TEST_ASSERT(sync_regs->todpr == 0, "todpr == 0 (sync_regs)"); - TEST_ASSERT(sync_regs->cputm == 0, "cputm == 0 (sync_regs)"); - TEST_ASSERT(sync_regs->ckc == 0, "ckc == 0 (sync_regs)"); - TEST_ASSERT(sync_regs->pp == 0, "pp == 0 (sync_regs)"); - TEST_ASSERT(sync_regs->gbea == 1, "gbea == 1 (sync_regs)"); - - /* kvm_run */ - TEST_ASSERT(run->psw_addr == 0, "psw_addr == 0 (kvm_run)"); - TEST_ASSERT(run->psw_mask == 0, "psw_mask == 0 (kvm_run)"); - - vcpu_fpu_get(vm, VCPU_ID, &fpu); - TEST_ASSERT(!fpu.fpc, "fpc == 0"); - - test_one_reg(KVM_REG_S390_GBEA, 1); - test_one_reg(KVM_REG_S390_PP, 0); - test_one_reg(KVM_REG_S390_TODPR, 0); - test_one_reg(KVM_REG_S390_CPU_TIMER, 0); - test_one_reg(KVM_REG_S390_CLOCK_COMP, 0); -} - -static void assert_normal_noclear(void) -{ - TEST_ASSERT(sync_regs->crs[2] == 0x10, "cr2 == 10 (sync_regs)"); - TEST_ASSERT(sync_regs->crs[8] == 1, "cr10 == 1 (sync_regs)"); - TEST_ASSERT(sync_regs->crs[10] == 1, "cr10 == 1 (sync_regs)"); - TEST_ASSERT(sync_regs->crs[11] == -1, "cr11 == -1 (sync_regs)"); -} - -static void assert_normal(void) -{ - test_one_reg(KVM_REG_S390_PFTOKEN, KVM_S390_PFAULT_TOKEN_INVALID); - TEST_ASSERT(sync_regs->pft == KVM_S390_PFAULT_TOKEN_INVALID, - "pft == 0xff..... (sync_regs)"); - assert_noirq(); -} - -static void inject_irq(int cpu_id) -{ - struct kvm_s390_irq_state irq_state; - struct kvm_s390_irq *irq = &buf[0]; - int irqs; - - /* Inject IRQ */ - irq_state.len = sizeof(struct kvm_s390_irq); - irq_state.buf = (unsigned long)buf; - irq->type = KVM_S390_INT_EMERGENCY; - irq->u.emerg.code = cpu_id; - irqs = _vcpu_ioctl(vm, cpu_id, KVM_S390_SET_IRQ_STATE, &irq_state); - TEST_ASSERT(irqs >= 0, "Error injecting EMERGENCY IRQ errno %d\n", errno); -} - -static void test_normal(void) -{ - pr_info("Testing normal reset\n"); - /* Create VM */ - vm = vm_create_default(VCPU_ID, 0, guest_code_initial); - run = vcpu_state(vm, VCPU_ID); - sync_regs = &run->s.regs; - - vcpu_run(vm, VCPU_ID); - - inject_irq(VCPU_ID); - - vcpu_ioctl(vm, VCPU_ID, KVM_S390_NORMAL_RESET, 0); - - /* must clears */ - assert_normal(); - /* must not clears */ - assert_normal_noclear(); - assert_initial_noclear(); - - kvm_vm_free(vm); -} - -static void test_initial(void) -{ - pr_info("Testing initial reset\n"); - vm = vm_create_default(VCPU_ID, 0, guest_code_initial); - run = vcpu_state(vm, VCPU_ID); - sync_regs = &run->s.regs; - - vcpu_run(vm, VCPU_ID); - - inject_irq(VCPU_ID); - - vcpu_ioctl(vm, VCPU_ID, KVM_S390_INITIAL_RESET, 0); - - /* must clears */ - assert_normal(); - assert_initial(); - /* must not clears */ - assert_initial_noclear(); - - kvm_vm_free(vm); -} - -static void test_clear(void) -{ - pr_info("Testing clear reset\n"); - vm = vm_create_default(VCPU_ID, 0, guest_code_initial); - run = vcpu_state(vm, VCPU_ID); - sync_regs = &run->s.regs; - - vcpu_run(vm, VCPU_ID); - - inject_irq(VCPU_ID); - - vcpu_ioctl(vm, VCPU_ID, KVM_S390_CLEAR_RESET, 0); - - /* must clears */ - assert_normal(); - assert_initial(); - assert_clear(); - - kvm_vm_free(vm); -} - -int main(int argc, char *argv[]) -{ - setbuf(stdout, NULL); /* Tell stdout not to buffer its content */ - - test_initial(); - if (kvm_check_cap(KVM_CAP_S390_VCPU_RESETS)) { - test_normal(); - test_clear(); - } - return 0; -} |