#include <asm/ptrace.h>
#include "qemu-common.h"
+#include "qemu/error-report.h"
#include "qemu/timer.h"
#include "sysemu/sysemu.h"
#include "sysemu/kvm.h"
#include "qapi/qmp/qjson.h"
#include "monitor/monitor.h"
#include "exec/gdbstub.h"
+#include "exec/address-spaces.h"
#include "trace.h"
#include "qapi-event.h"
#include "hw/s390x/s390-pci-inst.h"
#include "hw/s390x/s390-pci-bus.h"
+#include "hw/s390x/ipl.h"
+#include "hw/s390x/ebcdic.h"
+#include "exec/memattrs.h"
/* #define DEBUG_KVM */
do { } while (0)
#endif
+#define kvm_vm_check_mem_attr(s, attr) \
+ kvm_vm_check_attr(s, KVM_S390_VM_MEM_CTRL, attr)
+
#define IPA0_DIAG 0x8300
#define IPA0_SIGP 0xae00
#define IPA0_B2 0xb200
#define PRIV_E3_MPCIFC 0xd0
#define PRIV_E3_STPCIFC 0xd4
+#define DIAG_TIMEREVENT 0x288
#define DIAG_IPL 0x308
#define DIAG_KVM_HYPERCALL 0x500
#define DIAG_KVM_BREAKPOINT 0x501
#define ICPT_CPU_STOP 0x28
#define ICPT_IO 0x40
+#define NR_LOCAL_IRQS 32
+/*
+ * Needs to be big enough to contain max_cpus emergency signals
+ * and in addition NR_LOCAL_IRQS interrupts
+ */
+#define VCPU_IRQ_BUF_SIZE (sizeof(struct kvm_s390_irq) * \
+ (max_cpus + NR_LOCAL_IRQS))
+
static CPUWatchpoint hw_watchpoint;
/*
* We don't use a list because this structure is also used to transmit the
static int cap_sync_regs;
static int cap_async_pf;
+static int cap_mem_op;
+static int cap_s390_irq;
static void *legacy_s390_alloc(size_t size, uint64_t *align);
-static int kvm_s390_check_clear_cmma(KVMState *s)
+static int kvm_s390_query_mem_limit(KVMState *s, uint64_t *memory_limit)
{
struct kvm_device_attr attr = {
.group = KVM_S390_VM_MEM_CTRL,
- .attr = KVM_S390_VM_MEM_CLR_CMMA,
+ .attr = KVM_S390_VM_MEM_LIMIT_SIZE,
+ .addr = (uint64_t) memory_limit,
};
- return kvm_vm_ioctl(s, KVM_HAS_DEVICE_ATTR, &attr);
+ return kvm_vm_ioctl(s, KVM_GET_DEVICE_ATTR, &attr);
}
-static int kvm_s390_check_enable_cmma(KVMState *s)
+int kvm_s390_set_mem_limit(KVMState *s, uint64_t new_limit, uint64_t *hw_limit)
{
+ int rc;
+
struct kvm_device_attr attr = {
.group = KVM_S390_VM_MEM_CTRL,
- .attr = KVM_S390_VM_MEM_ENABLE_CMMA,
+ .attr = KVM_S390_VM_MEM_LIMIT_SIZE,
+ .addr = (uint64_t) &new_limit,
};
- return kvm_vm_ioctl(s, KVM_HAS_DEVICE_ATTR, &attr);
+ if (!kvm_vm_check_mem_attr(s, KVM_S390_VM_MEM_LIMIT_SIZE)) {
+ return 0;
+ }
+
+ rc = kvm_s390_query_mem_limit(s, hw_limit);
+ if (rc) {
+ return rc;
+ } else if (*hw_limit < new_limit) {
+ return -E2BIG;
+ }
+
+ return kvm_vm_ioctl(s, KVM_SET_DEVICE_ATTR, &attr);
}
void kvm_s390_clear_cmma_callback(void *opaque)
.attr = KVM_S390_VM_MEM_ENABLE_CMMA,
};
- if (kvm_s390_check_enable_cmma(s) || kvm_s390_check_clear_cmma(s)) {
+ if (!kvm_vm_check_mem_attr(s, KVM_S390_VM_MEM_ENABLE_CMMA) ||
+ !kvm_vm_check_mem_attr(s, KVM_S390_VM_MEM_CLR_CMMA)) {
return;
}
trace_kvm_enable_cmma(rc);
}
-int kvm_arch_init(KVMState *s)
+static void kvm_s390_set_attr(uint64_t attr)
+{
+ struct kvm_device_attr attribute = {
+ .group = KVM_S390_VM_CRYPTO,
+ .attr = attr,
+ };
+
+ int ret = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attribute);
+
+ if (ret) {
+ error_report("Failed to set crypto device attribute %lu: %s",
+ attr, strerror(-ret));
+ }
+}
+
+static void kvm_s390_init_aes_kw(void)
+{
+ uint64_t attr = KVM_S390_VM_CRYPTO_DISABLE_AES_KW;
+
+ if (object_property_get_bool(OBJECT(qdev_get_machine()), "aes-key-wrap",
+ NULL)) {
+ attr = KVM_S390_VM_CRYPTO_ENABLE_AES_KW;
+ }
+
+ if (kvm_vm_check_attr(kvm_state, KVM_S390_VM_CRYPTO, attr)) {
+ kvm_s390_set_attr(attr);
+ }
+}
+
+static void kvm_s390_init_dea_kw(void)
+{
+ uint64_t attr = KVM_S390_VM_CRYPTO_DISABLE_DEA_KW;
+
+ if (object_property_get_bool(OBJECT(qdev_get_machine()), "dea-key-wrap",
+ NULL)) {
+ attr = KVM_S390_VM_CRYPTO_ENABLE_DEA_KW;
+ }
+
+ if (kvm_vm_check_attr(kvm_state, KVM_S390_VM_CRYPTO, attr)) {
+ kvm_s390_set_attr(attr);
+ }
+}
+
+static void kvm_s390_init_crypto(void)
+{
+ kvm_s390_init_aes_kw();
+ kvm_s390_init_dea_kw();
+}
+
+int kvm_arch_init(MachineState *ms, KVMState *s)
{
cap_sync_regs = kvm_check_extension(s, KVM_CAP_SYNC_REGS);
cap_async_pf = kvm_check_extension(s, KVM_CAP_ASYNC_PF);
+ cap_mem_op = kvm_check_extension(s, KVM_CAP_S390_MEM_OP);
+ cap_s390_irq = kvm_check_extension(s, KVM_CAP_S390_INJECT_IRQ);
- if (kvm_check_extension(s, KVM_CAP_VM_ATTRIBUTES)) {
- kvm_s390_enable_cmma(s);
- }
+ kvm_s390_enable_cmma(s);
if (!kvm_check_extension(s, KVM_CAP_S390_GMAP)
|| !kvm_check_extension(s, KVM_CAP_S390_COW)) {
phys_mem_set_alloc(legacy_s390_alloc);
}
+
+ kvm_vm_enable_cap(s, KVM_CAP_S390_USER_SIGP, 0);
+ kvm_vm_enable_cap(s, KVM_CAP_S390_VECTOR_REGISTERS, 0);
+ kvm_vm_enable_cap(s, KVM_CAP_S390_USER_STSI, 0);
+
return 0;
}
{
S390CPU *cpu = S390_CPU(cs);
kvm_s390_set_cpu_state(cpu, cpu->env.cpu_state);
+ cpu->irqstate = g_malloc0(VCPU_IRQ_BUF_SIZE);
return 0;
}
* Before this ioctl cpu_synchronize_state() is called in common kvm
* code (kvm-all) */
if (kvm_vcpu_ioctl(cs, KVM_S390_INITIAL_RESET, NULL)) {
- error_report("Initial CPU reset failed on CPU %i\n", cs->cpu_index);
+ error_report("Initial CPU reset failed on CPU %i", cs->cpu_index);
}
+
+ kvm_s390_init_crypto();
}
static int can_sync_regs(CPUState *cs, int regs)
}
}
- /* Floating point */
- for (i = 0; i < 16; i++) {
- fpu.fprs[i] = env->fregs[i].ll;
- }
- fpu.fpc = env->fpc;
+ if (can_sync_regs(cs, KVM_SYNC_VRS)) {
+ for (i = 0; i < 32; i++) {
+ cs->kvm_run->s.regs.vrs[i][0] = env->vregs[i][0].ll;
+ cs->kvm_run->s.regs.vrs[i][1] = env->vregs[i][1].ll;
+ }
+ cs->kvm_run->s.regs.fpc = env->fpc;
+ cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_VRS;
+ } else {
+ /* Floating point */
+ for (i = 0; i < 16; i++) {
+ fpu.fprs[i] = get_freg(env, i)->ll;
+ }
+ fpu.fpc = env->fpc;
- r = kvm_vcpu_ioctl(cs, KVM_SET_FPU, &fpu);
- if (r < 0) {
- return r;
+ r = kvm_vcpu_ioctl(cs, KVM_SET_FPU, &fpu);
+ if (r < 0) {
+ return r;
+ }
}
/* Do we need to save more than that? */
}
}
- /* Floating point */
- r = kvm_vcpu_ioctl(cs, KVM_GET_FPU, &fpu);
- if (r < 0) {
- return r;
- }
- for (i = 0; i < 16; i++) {
- env->fregs[i].ll = fpu.fprs[i];
+ /* Floating point and vector registers */
+ if (can_sync_regs(cs, KVM_SYNC_VRS)) {
+ for (i = 0; i < 32; i++) {
+ env->vregs[i][0].ll = cs->kvm_run->s.regs.vrs[i][0];
+ env->vregs[i][1].ll = cs->kvm_run->s.regs.vrs[i][1];
+ }
+ env->fpc = cs->kvm_run->s.regs.fpc;
+ } else {
+ r = kvm_vcpu_ioctl(cs, KVM_GET_FPU, &fpu);
+ if (r < 0) {
+ return r;
+ }
+ for (i = 0; i < 16; i++) {
+ get_freg(env, i)->ll = fpu.fprs[i];
+ }
+ env->fpc = fpu.fpc;
}
- env->fpc = fpu.fpc;
/* The prefix */
if (can_sync_regs(cs, KVM_SYNC_PREFIX)) {
return 0;
}
+int kvm_s390_get_clock(uint8_t *tod_high, uint64_t *tod_low)
+{
+ int r;
+ struct kvm_device_attr attr = {
+ .group = KVM_S390_VM_TOD,
+ .attr = KVM_S390_VM_TOD_LOW,
+ .addr = (uint64_t)tod_low,
+ };
+
+ r = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
+ if (r) {
+ return r;
+ }
+
+ attr.attr = KVM_S390_VM_TOD_HIGH;
+ attr.addr = (uint64_t)tod_high;
+ return kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
+}
+
+int kvm_s390_set_clock(uint8_t *tod_high, uint64_t *tod_low)
+{
+ int r;
+
+ struct kvm_device_attr attr = {
+ .group = KVM_S390_VM_TOD,
+ .attr = KVM_S390_VM_TOD_LOW,
+ .addr = (uint64_t)tod_low,
+ };
+
+ r = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
+ if (r) {
+ return r;
+ }
+
+ attr.attr = KVM_S390_VM_TOD_HIGH;
+ attr.addr = (uint64_t)tod_high;
+ return kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
+}
+
+/**
+ * kvm_s390_mem_op:
+ * @addr: the logical start address in guest memory
+ * @ar: the access register number
+ * @hostbuf: buffer in host memory. NULL = do only checks w/o copying
+ * @len: length that should be transfered
+ * @is_write: true = write, false = read
+ * Returns: 0 on success, non-zero if an exception or error occured
+ *
+ * Use KVM ioctl to read/write from/to guest memory. An access exception
+ * is injected into the vCPU in case of translation errors.
+ */
+int kvm_s390_mem_op(S390CPU *cpu, vaddr addr, uint8_t ar, void *hostbuf,
+ int len, bool is_write)
+{
+ struct kvm_s390_mem_op mem_op = {
+ .gaddr = addr,
+ .flags = KVM_S390_MEMOP_F_INJECT_EXCEPTION,
+ .size = len,
+ .op = is_write ? KVM_S390_MEMOP_LOGICAL_WRITE
+ : KVM_S390_MEMOP_LOGICAL_READ,
+ .buf = (uint64_t)hostbuf,
+ .ar = ar,
+ };
+ int ret;
+
+ if (!cap_mem_op) {
+ return -ENOSYS;
+ }
+ if (!hostbuf) {
+ mem_op.flags |= KVM_S390_MEMOP_F_CHECK_ONLY;
+ }
+
+ ret = kvm_vcpu_ioctl(CPU(cpu), KVM_S390_MEM_OP, &mem_op);
+ if (ret < 0) {
+ error_printf("KVM_S390_MEM_OP failed: %s\n", strerror(-ret));
+ }
+ return ret;
+}
+
/*
* Legacy layout for s390:
* Older S390 KVM requires the topmost vma of the RAM to be
{
}
-void kvm_arch_post_run(CPUState *cpu, struct kvm_run *run)
+MemTxAttrs kvm_arch_post_run(CPUState *cs, struct kvm_run *run)
{
+ return MEMTXATTRS_UNSPECIFIED;
}
int kvm_arch_process_async_events(CPUState *cs)
return r;
}
-void kvm_s390_vcpu_interrupt(S390CPU *cpu, struct kvm_s390_irq *irq)
+static void inject_vcpu_irq_legacy(CPUState *cs, struct kvm_s390_irq *irq)
{
struct kvm_s390_interrupt kvmint = {};
- CPUState *cs = CPU(cpu);
int r;
r = s390_kvm_irq_to_interrupt(irq, &kvmint);
}
}
+void kvm_s390_vcpu_interrupt(S390CPU *cpu, struct kvm_s390_irq *irq)
+{
+ CPUState *cs = CPU(cpu);
+ int r;
+
+ if (cap_s390_irq) {
+ r = kvm_vcpu_ioctl(cs, KVM_S390_IRQ, irq);
+ if (!r) {
+ return;
+ }
+ error_report("KVM failed to inject interrupt %llx", irq->type);
+ exit(1);
+ }
+
+ inject_vcpu_irq_legacy(cs, irq);
+}
+
static void __kvm_s390_floating_interrupt(struct kvm_s390_irq *irq)
{
struct kvm_s390_interrupt kvmint = {};
kvm_s390_vcpu_interrupt(cpu, &irq);
}
+void kvm_s390_access_exception(S390CPU *cpu, uint16_t code, uint64_t te_code)
+{
+ struct kvm_s390_irq irq = {
+ .type = KVM_S390_PROGRAM_INT,
+ .u.pgm.code = code,
+ .u.pgm.trans_exc_code = te_code,
+ .u.pgm.exc_access_id = te_code & 3,
+ };
+
+ kvm_s390_vcpu_interrupt(cpu, &irq);
+}
+
static int kvm_sclp_service_call(S390CPU *cpu, struct kvm_run *run,
uint16_t ipbh0)
{
return rc;
}
-static uint64_t get_base_disp_rxy(S390CPU *cpu, struct kvm_run *run)
+static uint64_t get_base_disp_rxy(S390CPU *cpu, struct kvm_run *run,
+ uint8_t *ar)
{
CPUS390XState *env = &cpu->env;
uint32_t x2 = (run->s390_sieic.ipa & 0x000f);
if (disp2 & 0x80000) {
disp2 += 0xfff00000;
}
+ if (ar) {
+ *ar = base2;
+ }
return (base2 ? env->regs[base2] : 0) +
(x2 ? env->regs[x2] : 0) + (long)(int)disp2;
}
-static uint64_t get_base_disp_rsy(S390CPU *cpu, struct kvm_run *run)
+static uint64_t get_base_disp_rsy(S390CPU *cpu, struct kvm_run *run,
+ uint8_t *ar)
{
CPUS390XState *env = &cpu->env;
uint32_t base2 = run->s390_sieic.ipb >> 28;
if (disp2 & 0x80000) {
disp2 += 0xfff00000;
}
+ if (ar) {
+ *ar = base2;
+ }
return (base2 ? env->regs[base2] : 0) + (long)(int)disp2;
}
{
uint8_t r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
uint64_t fiba;
+ uint8_t ar;
cpu_synchronize_state(CPU(cpu));
- fiba = get_base_disp_rxy(cpu, run);
+ fiba = get_base_disp_rxy(cpu, run, &ar);
- return stpcifc_service_call(cpu, r1, fiba);
+ return stpcifc_service_call(cpu, r1, fiba, ar);
}
static int kvm_sic_service_call(S390CPU *cpu, struct kvm_run *run)
uint8_t r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
uint8_t r3 = run->s390_sieic.ipa & 0x000f;
uint64_t gaddr;
+ uint8_t ar;
cpu_synchronize_state(CPU(cpu));
- gaddr = get_base_disp_rsy(cpu, run);
+ gaddr = get_base_disp_rsy(cpu, run, &ar);
- return pcistb_service_call(cpu, r1, r3, gaddr);
+ return pcistb_service_call(cpu, r1, r3, gaddr, ar);
}
static int kvm_mpcifc_service_call(S390CPU *cpu, struct kvm_run *run)
{
uint8_t r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
uint64_t fiba;
+ uint8_t ar;
cpu_synchronize_state(CPU(cpu));
- fiba = get_base_disp_rxy(cpu, run);
+ fiba = get_base_disp_rxy(cpu, run, &ar);
- return mpcifc_service_call(cpu, r1, fiba);
+ return mpcifc_service_call(cpu, r1, fiba, ar);
}
static int handle_b9(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
return ret;
}
+static void kvm_handle_diag_288(S390CPU *cpu, struct kvm_run *run)
+{
+ uint64_t r1, r3;
+ int rc;
+
+ cpu_synchronize_state(CPU(cpu));
+ r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
+ r3 = run->s390_sieic.ipa & 0x000f;
+ rc = handle_diag_288(&cpu->env, r1, r3);
+ if (rc) {
+ enter_pgmcheck(cpu, PGM_SPECIFICATION);
+ }
+}
+
static void kvm_handle_diag_308(S390CPU *cpu, struct kvm_run *run)
{
uint64_t r1, r3;
* For any diagnose call we support, bits 48-63 of the resulting
* address specify the function code; the remainder is ignored.
*/
- func_code = decode_basedisp_rs(&cpu->env, ipb) & DIAG_KVM_CODE_MASK;
+ func_code = decode_basedisp_rs(&cpu->env, ipb, NULL) & DIAG_KVM_CODE_MASK;
switch (func_code) {
+ case DIAG_TIMEREVENT:
+ kvm_handle_diag_288(cpu, run);
+ break;
case DIAG_IPL:
kvm_handle_diag_308(cpu, run);
break;
return r;
}
-static void sigp_cpu_start(void *arg)
+typedef struct SigpInfo {
+ S390CPU *cpu;
+ uint64_t param;
+ int cc;
+ uint64_t *status_reg;
+} SigpInfo;
+
+static void set_sigp_status(SigpInfo *si, uint64_t status)
{
- CPUState *cs = arg;
- S390CPU *cpu = S390_CPU(cs);
+ *si->status_reg &= 0xffffffff00000000ULL;
+ *si->status_reg |= status;
+ si->cc = SIGP_CC_STATUS_STORED;
+}
- s390_cpu_set_state(CPU_STATE_OPERATING, cpu);
- DPRINTF("DONE: KVM cpu start: %p\n", &cpu->env);
+static void sigp_start(void *arg)
+{
+ SigpInfo *si = arg;
+
+ if (s390_cpu_get_state(si->cpu) != CPU_STATE_STOPPED) {
+ si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
+ return;
+ }
+
+ s390_cpu_set_state(CPU_STATE_OPERATING, si->cpu);
+ si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
}
-static void sigp_cpu_restart(void *arg)
+static void sigp_stop(void *arg)
{
- CPUState *cs = arg;
- S390CPU *cpu = S390_CPU(cs);
+ SigpInfo *si = arg;
+ struct kvm_s390_irq irq = {
+ .type = KVM_S390_SIGP_STOP,
+ };
+
+ if (s390_cpu_get_state(si->cpu) != CPU_STATE_OPERATING) {
+ si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
+ return;
+ }
+
+ /* disabled wait - sleeping in user space */
+ if (CPU(si->cpu)->halted) {
+ s390_cpu_set_state(CPU_STATE_STOPPED, si->cpu);
+ } else {
+ /* execute the stop function */
+ si->cpu->env.sigp_order = SIGP_STOP;
+ kvm_s390_vcpu_interrupt(si->cpu, &irq);
+ }
+ si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
+}
+
+#define ADTL_SAVE_AREA_SIZE 1024
+static int kvm_s390_store_adtl_status(S390CPU *cpu, hwaddr addr)
+{
+ void *mem;
+ hwaddr len = ADTL_SAVE_AREA_SIZE;
+
+ mem = cpu_physical_memory_map(addr, &len, 1);
+ if (!mem) {
+ return -EFAULT;
+ }
+ if (len != ADTL_SAVE_AREA_SIZE) {
+ cpu_physical_memory_unmap(mem, len, 1, 0);
+ return -EFAULT;
+ }
+
+ memcpy(mem, &cpu->env.vregs, 512);
+
+ cpu_physical_memory_unmap(mem, len, 1, len);
+
+ return 0;
+}
+
+#define KVM_S390_STORE_STATUS_DEF_ADDR offsetof(LowCore, floating_pt_save_area)
+#define SAVE_AREA_SIZE 512
+static int kvm_s390_store_status(S390CPU *cpu, hwaddr addr, bool store_arch)
+{
+ static const uint8_t ar_id = 1;
+ uint64_t ckc = cpu->env.ckc >> 8;
+ void *mem;
+ int i;
+ hwaddr len = SAVE_AREA_SIZE;
+
+ mem = cpu_physical_memory_map(addr, &len, 1);
+ if (!mem) {
+ return -EFAULT;
+ }
+ if (len != SAVE_AREA_SIZE) {
+ cpu_physical_memory_unmap(mem, len, 1, 0);
+ return -EFAULT;
+ }
+
+ if (store_arch) {
+ cpu_physical_memory_write(offsetof(LowCore, ar_access_id), &ar_id, 1);
+ }
+ for (i = 0; i < 16; ++i) {
+ *((uint64 *)mem + i) = get_freg(&cpu->env, i)->ll;
+ }
+ memcpy(mem + 128, &cpu->env.regs, 128);
+ memcpy(mem + 256, &cpu->env.psw, 16);
+ memcpy(mem + 280, &cpu->env.psa, 4);
+ memcpy(mem + 284, &cpu->env.fpc, 4);
+ memcpy(mem + 292, &cpu->env.todpr, 4);
+ memcpy(mem + 296, &cpu->env.cputm, 8);
+ memcpy(mem + 304, &ckc, 8);
+ memcpy(mem + 320, &cpu->env.aregs, 64);
+ memcpy(mem + 384, &cpu->env.cregs, 128);
+
+ cpu_physical_memory_unmap(mem, len, 1, len);
+
+ return 0;
+}
+
+static void sigp_stop_and_store_status(void *arg)
+{
+ SigpInfo *si = arg;
+ struct kvm_s390_irq irq = {
+ .type = KVM_S390_SIGP_STOP,
+ };
+
+ /* disabled wait - sleeping in user space */
+ if (s390_cpu_get_state(si->cpu) == CPU_STATE_OPERATING &&
+ CPU(si->cpu)->halted) {
+ s390_cpu_set_state(CPU_STATE_STOPPED, si->cpu);
+ }
+
+ switch (s390_cpu_get_state(si->cpu)) {
+ case CPU_STATE_OPERATING:
+ si->cpu->env.sigp_order = SIGP_STOP_STORE_STATUS;
+ kvm_s390_vcpu_interrupt(si->cpu, &irq);
+ /* store will be performed when handling the stop intercept */
+ break;
+ case CPU_STATE_STOPPED:
+ /* already stopped, just store the status */
+ cpu_synchronize_state(CPU(si->cpu));
+ kvm_s390_store_status(si->cpu, KVM_S390_STORE_STATUS_DEF_ADDR, true);
+ break;
+ }
+ si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
+}
+
+static void sigp_store_status_at_address(void *arg)
+{
+ SigpInfo *si = arg;
+ uint32_t address = si->param & 0x7ffffe00u;
+
+ /* cpu has to be stopped */
+ if (s390_cpu_get_state(si->cpu) != CPU_STATE_STOPPED) {
+ set_sigp_status(si, SIGP_STAT_INCORRECT_STATE);
+ return;
+ }
+
+ cpu_synchronize_state(CPU(si->cpu));
+
+ if (kvm_s390_store_status(si->cpu, address, false)) {
+ set_sigp_status(si, SIGP_STAT_INVALID_PARAMETER);
+ return;
+ }
+ si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
+}
+
+static void sigp_store_adtl_status(void *arg)
+{
+ SigpInfo *si = arg;
+
+ if (!kvm_check_extension(kvm_state, KVM_CAP_S390_VECTOR_REGISTERS)) {
+ set_sigp_status(si, SIGP_STAT_INVALID_ORDER);
+ return;
+ }
+
+ /* cpu has to be stopped */
+ if (s390_cpu_get_state(si->cpu) != CPU_STATE_STOPPED) {
+ set_sigp_status(si, SIGP_STAT_INCORRECT_STATE);
+ return;
+ }
+
+ /* parameter must be aligned to 1024-byte boundary */
+ if (si->param & 0x3ff) {
+ set_sigp_status(si, SIGP_STAT_INVALID_PARAMETER);
+ return;
+ }
+
+ cpu_synchronize_state(CPU(si->cpu));
+
+ if (kvm_s390_store_adtl_status(si->cpu, si->param)) {
+ set_sigp_status(si, SIGP_STAT_INVALID_PARAMETER);
+ return;
+ }
+ si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
+}
+
+static void sigp_restart(void *arg)
+{
+ SigpInfo *si = arg;
struct kvm_s390_irq irq = {
.type = KVM_S390_RESTART,
};
- kvm_s390_vcpu_interrupt(cpu, &irq);
- s390_cpu_set_state(CPU_STATE_OPERATING, cpu);
+ switch (s390_cpu_get_state(si->cpu)) {
+ case CPU_STATE_STOPPED:
+ /* the restart irq has to be delivered prior to any other pending irq */
+ cpu_synchronize_state(CPU(si->cpu));
+ do_restart_interrupt(&si->cpu->env);
+ s390_cpu_set_state(CPU_STATE_OPERATING, si->cpu);
+ break;
+ case CPU_STATE_OPERATING:
+ kvm_s390_vcpu_interrupt(si->cpu, &irq);
+ break;
+ }
+ si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
}
int kvm_s390_cpu_restart(S390CPU *cpu)
{
- run_on_cpu(CPU(cpu), sigp_cpu_restart, CPU(cpu));
+ SigpInfo si = {
+ .cpu = cpu,
+ };
+
+ run_on_cpu(CPU(cpu), sigp_restart, &si);
DPRINTF("DONE: KVM cpu restart: %p\n", &cpu->env);
return 0;
}
static void sigp_initial_cpu_reset(void *arg)
{
- CPUState *cpu = arg;
- S390CPUClass *scc = S390_CPU_GET_CLASS(cpu);
+ SigpInfo *si = arg;
+ CPUState *cs = CPU(si->cpu);
+ S390CPUClass *scc = S390_CPU_GET_CLASS(si->cpu);
- cpu_synchronize_state(cpu);
- scc->initial_cpu_reset(cpu);
- cpu_synchronize_post_reset(cpu);
+ cpu_synchronize_state(cs);
+ scc->initial_cpu_reset(cs);
+ cpu_synchronize_post_reset(cs);
+ si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
}
static void sigp_cpu_reset(void *arg)
{
- CPUState *cpu = arg;
- S390CPUClass *scc = S390_CPU_GET_CLASS(cpu);
+ SigpInfo *si = arg;
+ CPUState *cs = CPU(si->cpu);
+ S390CPUClass *scc = S390_CPU_GET_CLASS(si->cpu);
- cpu_synchronize_state(cpu);
- scc->cpu_reset(cpu);
- cpu_synchronize_post_reset(cpu);
+ cpu_synchronize_state(cs);
+ scc->cpu_reset(cs);
+ cpu_synchronize_post_reset(cs);
+ si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
}
-#define SIGP_ORDER_MASK 0x000000ff
-
-static int handle_sigp(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
+static void sigp_set_prefix(void *arg)
{
- CPUS390XState *env = &cpu->env;
- uint8_t order_code;
- uint16_t cpu_addr;
- S390CPU *target_cpu;
- uint64_t *statusreg = &env->regs[ipa1 >> 4];
- int cc;
+ SigpInfo *si = arg;
+ uint32_t addr = si->param & 0x7fffe000u;
- cpu_synchronize_state(CPU(cpu));
+ cpu_synchronize_state(CPU(si->cpu));
- /* get order code */
- order_code = decode_basedisp_rs(env, run->s390_sieic.ipb) & SIGP_ORDER_MASK;
+ if (!address_space_access_valid(&address_space_memory, addr,
+ sizeof(struct LowCore), false)) {
+ set_sigp_status(si, SIGP_STAT_INVALID_PARAMETER);
+ return;
+ }
+
+ /* cpu has to be stopped */
+ if (s390_cpu_get_state(si->cpu) != CPU_STATE_STOPPED) {
+ set_sigp_status(si, SIGP_STAT_INCORRECT_STATE);
+ return;
+ }
+
+ si->cpu->env.psa = addr;
+ cpu_synchronize_post_init(CPU(si->cpu));
+ si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
+}
+
+static int handle_sigp_single_dst(S390CPU *dst_cpu, uint8_t order,
+ uint64_t param, uint64_t *status_reg)
+{
+ SigpInfo si = {
+ .cpu = dst_cpu,
+ .param = param,
+ .status_reg = status_reg,
+ };
+
+ /* cpu available? */
+ if (dst_cpu == NULL) {
+ return SIGP_CC_NOT_OPERATIONAL;
+ }
- cpu_addr = env->regs[ipa1 & 0x0f];
- target_cpu = s390_cpu_addr2state(cpu_addr);
- if (target_cpu == NULL) {
- cc = 3; /* not operational */
- goto out;
+ /* only resets can break pending orders */
+ if (dst_cpu->env.sigp_order != 0 &&
+ order != SIGP_CPU_RESET &&
+ order != SIGP_INITIAL_CPU_RESET) {
+ return SIGP_CC_BUSY;
}
- switch (order_code) {
+ switch (order) {
case SIGP_START:
- run_on_cpu(CPU(target_cpu), sigp_cpu_start, CPU(target_cpu));
- cc = 0;
+ run_on_cpu(CPU(dst_cpu), sigp_start, &si);
+ break;
+ case SIGP_STOP:
+ run_on_cpu(CPU(dst_cpu), sigp_stop, &si);
break;
case SIGP_RESTART:
- run_on_cpu(CPU(target_cpu), sigp_cpu_restart, CPU(target_cpu));
- cc = 0;
+ run_on_cpu(CPU(dst_cpu), sigp_restart, &si);
break;
- case SIGP_SET_ARCH:
- *statusreg &= 0xffffffff00000000UL;
- *statusreg |= SIGP_STAT_INVALID_PARAMETER;
- cc = 1; /* status stored */
+ case SIGP_STOP_STORE_STATUS:
+ run_on_cpu(CPU(dst_cpu), sigp_stop_and_store_status, &si);
+ break;
+ case SIGP_STORE_STATUS_ADDR:
+ run_on_cpu(CPU(dst_cpu), sigp_store_status_at_address, &si);
+ break;
+ case SIGP_STORE_ADTL_STATUS:
+ run_on_cpu(CPU(dst_cpu), sigp_store_adtl_status, &si);
+ break;
+ case SIGP_SET_PREFIX:
+ run_on_cpu(CPU(dst_cpu), sigp_set_prefix, &si);
break;
case SIGP_INITIAL_CPU_RESET:
- run_on_cpu(CPU(target_cpu), sigp_initial_cpu_reset, CPU(target_cpu));
- cc = 0;
+ run_on_cpu(CPU(dst_cpu), sigp_initial_cpu_reset, &si);
break;
case SIGP_CPU_RESET:
- run_on_cpu(CPU(target_cpu), sigp_cpu_reset, CPU(target_cpu));
- cc = 0;
+ run_on_cpu(CPU(dst_cpu), sigp_cpu_reset, &si);
break;
default:
- DPRINTF("KVM: unknown SIGP: 0x%x\n", order_code);
- *statusreg &= 0xffffffff00000000UL;
- *statusreg |= SIGP_STAT_INVALID_ORDER;
- cc = 1; /* status stored */
+ DPRINTF("KVM: unknown SIGP: 0x%x\n", order);
+ set_sigp_status(&si, SIGP_STAT_INVALID_ORDER);
+ }
+
+ return si.cc;
+}
+
+static int sigp_set_architecture(S390CPU *cpu, uint32_t param,
+ uint64_t *status_reg)
+{
+ CPUState *cur_cs;
+ S390CPU *cur_cpu;
+
+ /* due to the BQL, we are the only active cpu */
+ CPU_FOREACH(cur_cs) {
+ cur_cpu = S390_CPU(cur_cs);
+ if (cur_cpu->env.sigp_order != 0) {
+ return SIGP_CC_BUSY;
+ }
+ cpu_synchronize_state(cur_cs);
+ /* all but the current one have to be stopped */
+ if (cur_cpu != cpu &&
+ s390_cpu_get_state(cur_cpu) != CPU_STATE_STOPPED) {
+ *status_reg &= 0xffffffff00000000ULL;
+ *status_reg |= SIGP_STAT_INCORRECT_STATE;
+ return SIGP_CC_STATUS_STORED;
+ }
+ }
+
+ switch (param & 0xff) {
+ case SIGP_MODE_ESA_S390:
+ /* not supported */
+ return SIGP_CC_NOT_OPERATIONAL;
+ case SIGP_MODE_Z_ARCH_TRANS_ALL_PSW:
+ case SIGP_MODE_Z_ARCH_TRANS_CUR_PSW:
+ CPU_FOREACH(cur_cs) {
+ cur_cpu = S390_CPU(cur_cs);
+ cur_cpu->env.pfault_token = -1UL;
+ }
break;
+ default:
+ *status_reg &= 0xffffffff00000000ULL;
+ *status_reg |= SIGP_STAT_INVALID_PARAMETER;
+ return SIGP_CC_STATUS_STORED;
}
-out:
- setcc(cpu, cc);
- return 0;
+ return SIGP_CC_ORDER_CODE_ACCEPTED;
+}
+
+#define SIGP_ORDER_MASK 0x000000ff
+
+static int handle_sigp(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
+{
+ CPUS390XState *env = &cpu->env;
+ const uint8_t r1 = ipa1 >> 4;
+ const uint8_t r3 = ipa1 & 0x0f;
+ int ret;
+ uint8_t order;
+ uint64_t *status_reg;
+ uint64_t param;
+ S390CPU *dst_cpu = NULL;
+
+ cpu_synchronize_state(CPU(cpu));
+
+ /* get order code */
+ order = decode_basedisp_rs(env, run->s390_sieic.ipb, NULL)
+ & SIGP_ORDER_MASK;
+ status_reg = &env->regs[r1];
+ param = (r1 % 2) ? env->regs[r1] : env->regs[r1 + 1];
+
+ switch (order) {
+ case SIGP_SET_ARCH:
+ ret = sigp_set_architecture(cpu, param, status_reg);
+ break;
+ default:
+ /* all other sigp orders target a single vcpu */
+ dst_cpu = s390_cpu_addr2state(env->regs[r3]);
+ ret = handle_sigp_single_dst(dst_cpu, order, param, status_reg);
+ }
+
+ trace_kvm_sigp_finished(order, CPU(cpu)->cpu_index,
+ dst_cpu ? CPU(dst_cpu)->cpu_index : -1, ret);
+
+ if (ret >= 0) {
+ setcc(cpu, ret);
+ return 0;
+ }
+
+ return ret;
}
static int handle_instruction(S390CPU *cpu, struct kvm_run *run)
if (s390_cpu_set_state(CPU_STATE_STOPPED, cpu) == 0) {
qemu_system_shutdown_request();
}
+ if (cpu->env.sigp_order == SIGP_STOP_STORE_STATUS) {
+ kvm_s390_store_status(cpu, KVM_S390_STORE_STATUS_DEF_ADDR,
+ true);
+ }
+ cpu->env.sigp_order = 0;
r = EXCP_HALTED;
break;
case ICPT_SOFT_INTERCEPT:
static int handle_tsch(S390CPU *cpu)
{
- CPUS390XState *env = &cpu->env;
CPUState *cs = CPU(cpu);
struct kvm_run *run = cs->kvm_run;
int ret;
cpu_synchronize_state(cs);
- ret = ioinst_handle_tsch(env, env->regs[1], run->s390_tsch.ipb);
- if (ret >= 0) {
- /* Success; set condition code. */
- setcc(cpu, ret);
- ret = 0;
- } else if (ret < -1) {
+ ret = ioinst_handle_tsch(cpu, cpu->env.regs[1], run->s390_tsch.ipb);
+ if (ret < 0) {
/*
* Failure.
* If an I/O interrupt had been dequeued, we have to reinject it.
return ret;
}
+static void insert_stsi_3_2_2(S390CPU *cpu, __u64 addr, uint8_t ar)
+{
+ struct sysib_322 sysib;
+ int del;
+
+ if (s390_cpu_virt_mem_read(cpu, addr, ar, &sysib, sizeof(sysib))) {
+ return;
+ }
+ /* Shift the stack of Extended Names to prepare for our own data */
+ memmove(&sysib.ext_names[1], &sysib.ext_names[0],
+ sizeof(sysib.ext_names[0]) * (sysib.count - 1));
+ /* First virt level, that doesn't provide Ext Names delimits stack. It is
+ * assumed it's not capable of managing Extended Names for lower levels.
+ */
+ for (del = 1; del < sysib.count; del++) {
+ if (!sysib.vm[del].ext_name_encoding || !sysib.ext_names[del][0]) {
+ break;
+ }
+ }
+ if (del < sysib.count) {
+ memset(sysib.ext_names[del], 0,
+ sizeof(sysib.ext_names[0]) * (sysib.count - del));
+ }
+ /* Insert short machine name in EBCDIC, padded with blanks */
+ if (qemu_name) {
+ memset(sysib.vm[0].name, 0x40, sizeof(sysib.vm[0].name));
+ ebcdic_put(sysib.vm[0].name, qemu_name, MIN(sizeof(sysib.vm[0].name),
+ strlen(qemu_name)));
+ }
+ sysib.vm[0].ext_name_encoding = 2; /* 2 = UTF-8 */
+ memset(sysib.ext_names[0], 0, sizeof(sysib.ext_names[0]));
+ /* If hypervisor specifies zero Extended Name in STSI322 SYSIB, it's
+ * considered by s390 as not capable of providing any Extended Name.
+ * Therefore if no name was specified on qemu invocation, we go with the
+ * same "KVMguest" default, which KVM has filled into short name field.
+ */
+ if (qemu_name) {
+ strncpy((char *)sysib.ext_names[0], qemu_name,
+ sizeof(sysib.ext_names[0]));
+ } else {
+ strcpy((char *)sysib.ext_names[0], "KVMguest");
+ }
+ /* Insert UUID */
+ memcpy(sysib.vm[0].uuid, qemu_uuid, sizeof(sysib.vm[0].uuid));
+
+ s390_cpu_virt_mem_write(cpu, addr, ar, &sysib, sizeof(sysib));
+}
+
+static int handle_stsi(S390CPU *cpu)
+{
+ CPUState *cs = CPU(cpu);
+ struct kvm_run *run = cs->kvm_run;
+
+ switch (run->s390_stsi.fc) {
+ case 3:
+ if (run->s390_stsi.sel1 != 2 || run->s390_stsi.sel2 != 2) {
+ return 0;
+ }
+ /* Only sysib 3.2.2 needs post-handling for now. */
+ insert_stsi_3_2_2(cpu, run->s390_stsi.addr, run->s390_stsi.ar);
+ return 0;
+ default:
+ return 0;
+ }
+}
+
static int kvm_arch_handle_debug_exit(S390CPU *cpu)
{
CPUState *cs = CPU(cpu);
ret = handle_intercept(cpu);
break;
case KVM_EXIT_S390_RESET:
- qemu_system_reset_request();
+ s390_reipl_request();
break;
case KVM_EXIT_S390_TSCH:
ret = handle_tsch(cpu);
break;
+ case KVM_EXIT_S390_STSI:
+ ret = handle_stsi(cpu);
+ break;
case KVM_EXIT_DEBUG:
ret = kvm_arch_handle_debug_exit(cpu);
break;
return ret;
}
+void kvm_s390_vcpu_interrupt_pre_save(S390CPU *cpu)
+{
+ struct kvm_s390_irq_state irq_state;
+ CPUState *cs = CPU(cpu);
+ int32_t bytes;
+
+ if (!kvm_check_extension(kvm_state, KVM_CAP_S390_IRQ_STATE)) {
+ return;
+ }
+
+ irq_state.buf = (uint64_t) cpu->irqstate;
+ irq_state.len = VCPU_IRQ_BUF_SIZE;
+
+ bytes = kvm_vcpu_ioctl(cs, KVM_S390_GET_IRQ_STATE, &irq_state);
+ if (bytes < 0) {
+ cpu->irqstate_saved_size = 0;
+ error_report("Migration of interrupt state failed");
+ return;
+ }
+
+ cpu->irqstate_saved_size = bytes;
+}
+
+int kvm_s390_vcpu_interrupt_post_load(S390CPU *cpu)
+{
+ CPUState *cs = CPU(cpu);
+ struct kvm_s390_irq_state irq_state;
+ int r;
+
+ if (cpu->irqstate_saved_size == 0) {
+ return 0;
+ }
+
+ if (!kvm_check_extension(kvm_state, KVM_CAP_S390_IRQ_STATE)) {
+ return -ENOSYS;
+ }
+
+ irq_state.buf = (uint64_t) cpu->irqstate;
+ irq_state.len = cpu->irqstate_saved_size;
+
+ r = kvm_vcpu_ioctl(cs, KVM_S390_SET_IRQ_STATE, &irq_state);
+ if (r) {
+ error_report("Setting interrupt state failed %d", r);
+ }
+ return r;
+}
+
int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route,
uint64_t address, uint32_t data)
{
route->u.adapter.adapter_id = pbdev->routes.adapter.adapter_id;
return 0;
}
+
+int kvm_arch_msi_data_to_gsi(uint32_t data)
+{
+ abort();
+}
projects / mirror_qemu.git / blobdiff