diff options
Diffstat (limited to 'tools/testing/selftests/kvm/lib/s390x/ucall.c')
| -rw-r--r-- | tools/testing/selftests/kvm/lib/s390x/ucall.c | 39 |
1 files changed, 6 insertions, 33 deletions
diff --git a/tools/testing/selftests/kvm/lib/s390x/ucall.c b/tools/testing/selftests/kvm/lib/s390x/ucall.c index 73dc4e21190f..a7f02dc372cf 100644 --- a/tools/testing/selftests/kvm/lib/s390x/ucall.c +++ b/tools/testing/selftests/kvm/lib/s390x/ucall.c @@ -6,40 +6,19 @@ */ #include "kvm_util.h" -void ucall_init(struct kvm_vm *vm, void *arg) +void ucall_arch_init(struct kvm_vm *vm, vm_paddr_t mmio_gpa) { } -void ucall_uninit(struct kvm_vm *vm) +void ucall_arch_do_ucall(vm_vaddr_t uc) { -} - -void ucall(uint64_t cmd, int nargs, ...) -{ - struct ucall uc = { - .cmd = cmd, - }; - va_list va; - int i; - - nargs = min(nargs, UCALL_MAX_ARGS); - - va_start(va, nargs); - for (i = 0; i < nargs; ++i) - uc.args[i] = va_arg(va, uint64_t); - va_end(va); - /* Exit via DIAGNOSE 0x501 (normally used for breakpoints) */ - asm volatile ("diag 0,%0,0x501" : : "a"(&uc) : "memory"); + asm volatile ("diag 0,%0,0x501" : : "a"(uc) : "memory"); } -uint64_t get_ucall(struct kvm_vcpu *vcpu, struct ucall *uc) +void *ucall_arch_get_ucall(struct kvm_vcpu *vcpu) { struct kvm_run *run = vcpu->run; - struct ucall ucall = {}; - - if (uc) - memset(uc, 0, sizeof(*uc)); if (run->exit_reason == KVM_EXIT_S390_SIEIC && run->s390_sieic.icptcode == 4 && @@ -47,13 +26,7 @@ uint64_t get_ucall(struct kvm_vcpu *vcpu, struct ucall *uc) (run->s390_sieic.ipb >> 16) == 0x501) { int reg = run->s390_sieic.ipa & 0xf; - memcpy(&ucall, addr_gva2hva(vcpu->vm, run->s.regs.gprs[reg]), - sizeof(ucall)); - - vcpu_run_complete_io(vcpu); - if (uc) - memcpy(uc, &ucall, sizeof(ucall)); + return (void *)run->s.regs.gprs[reg]; } - - return ucall.cmd; + return NULL; } |