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kvm.c
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/*
* QEMU S390x KVM implementation
*
* Copyright (c) 2009 Alexander Graf <[email protected]>
* Copyright IBM Corp. 2012
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* Contributions after 2012-10-29 are licensed under the terms of the
* GNU GPL, version 2 or (at your option) any later version.
*
* You should have received a copy of the GNU (Lesser) General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <linux/kvm.h>
#include <asm/ptrace.h>
#include "qemu-common.h"
#include "qemu/timer.h"
#include "sysemu/sysemu.h"
#include "sysemu/kvm.h"
#include "hw/hw.h"
#include "cpu.h"
#include "sysemu/device_tree.h"
#include "qapi/qmp/qjson.h"
#include "monitor/monitor.h"
#include "exec/gdbstub.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"
/* #define DEBUG_KVM */
#ifdef DEBUG_KVM
#define DPRINTF(fmt, ...) \
do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0)
#else
#define DPRINTF(fmt, ...) \
do { } while (0)
#endif
#define IPA0_DIAG 0x8300
#define IPA0_SIGP 0xae00
#define IPA0_B2 0xb200
#define IPA0_B9 0xb900
#define IPA0_EB 0xeb00
#define IPA0_E3 0xe300
#define PRIV_B2_SCLP_CALL 0x20
#define PRIV_B2_CSCH 0x30
#define PRIV_B2_HSCH 0x31
#define PRIV_B2_MSCH 0x32
#define PRIV_B2_SSCH 0x33
#define PRIV_B2_STSCH 0x34
#define PRIV_B2_TSCH 0x35
#define PRIV_B2_TPI 0x36
#define PRIV_B2_SAL 0x37
#define PRIV_B2_RSCH 0x38
#define PRIV_B2_STCRW 0x39
#define PRIV_B2_STCPS 0x3a
#define PRIV_B2_RCHP 0x3b
#define PRIV_B2_SCHM 0x3c
#define PRIV_B2_CHSC 0x5f
#define PRIV_B2_SIGA 0x74
#define PRIV_B2_XSCH 0x76
#define PRIV_EB_SQBS 0x8a
#define PRIV_EB_PCISTB 0xd0
#define PRIV_EB_SIC 0xd1
#define PRIV_B9_EQBS 0x9c
#define PRIV_B9_CLP 0xa0
#define PRIV_B9_PCISTG 0xd0
#define PRIV_B9_PCILG 0xd2
#define PRIV_B9_RPCIT 0xd3
#define PRIV_E3_MPCIFC 0xd0
#define PRIV_E3_STPCIFC 0xd4
#define DIAG_IPL 0x308
#define DIAG_KVM_HYPERCALL 0x500
#define DIAG_KVM_BREAKPOINT 0x501
#define ICPT_INSTRUCTION 0x04
#define ICPT_PROGRAM 0x08
#define ICPT_EXT_INT 0x14
#define ICPT_WAITPSW 0x1c
#define ICPT_SOFT_INTERCEPT 0x24
#define ICPT_CPU_STOP 0x28
#define ICPT_IO 0x40
static CPUWatchpoint hw_watchpoint;
/*
* We don't use a list because this structure is also used to transmit the
* hardware breakpoints to the kernel.
*/
static struct kvm_hw_breakpoint *hw_breakpoints;
static int nb_hw_breakpoints;
const KVMCapabilityInfo kvm_arch_required_capabilities[] = {
KVM_CAP_LAST_INFO
};
static int cap_sync_regs;
static int cap_async_pf;
static void *legacy_s390_alloc(size_t size, uint64_t *align);
static int kvm_s390_check_clear_cmma(KVMState *s)
{
struct kvm_device_attr attr = {
.group = KVM_S390_VM_MEM_CTRL,
.attr = KVM_S390_VM_MEM_CLR_CMMA,
};
return kvm_vm_ioctl(s, KVM_HAS_DEVICE_ATTR, &attr);
}
static int kvm_s390_check_enable_cmma(KVMState *s)
{
struct kvm_device_attr attr = {
.group = KVM_S390_VM_MEM_CTRL,
.attr = KVM_S390_VM_MEM_ENABLE_CMMA,
};
return kvm_vm_ioctl(s, KVM_HAS_DEVICE_ATTR, &attr);
}
void kvm_s390_clear_cmma_callback(void *opaque)
{
int rc;
KVMState *s = opaque;
struct kvm_device_attr attr = {
.group = KVM_S390_VM_MEM_CTRL,
.attr = KVM_S390_VM_MEM_CLR_CMMA,
};
rc = kvm_vm_ioctl(s, KVM_SET_DEVICE_ATTR, &attr);
trace_kvm_clear_cmma(rc);
}
static void kvm_s390_enable_cmma(KVMState *s)
{
int rc;
struct kvm_device_attr attr = {
.group = KVM_S390_VM_MEM_CTRL,
.attr = KVM_S390_VM_MEM_ENABLE_CMMA,
};
if (kvm_s390_check_enable_cmma(s) || kvm_s390_check_clear_cmma(s)) {
return;
}
rc = kvm_vm_ioctl(s, KVM_SET_DEVICE_ATTR, &attr);
if (!rc) {
qemu_register_reset(kvm_s390_clear_cmma_callback, s);
}
trace_kvm_enable_cmma(rc);
}
int kvm_arch_init(KVMState *s)
{
cap_sync_regs = kvm_check_extension(s, KVM_CAP_SYNC_REGS);
cap_async_pf = kvm_check_extension(s, KVM_CAP_ASYNC_PF);
if (kvm_check_extension(s, KVM_CAP_VM_ATTRIBUTES)) {
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);
}
return 0;
}
unsigned long kvm_arch_vcpu_id(CPUState *cpu)
{
return cpu->cpu_index;
}
int kvm_arch_init_vcpu(CPUState *cs)
{
S390CPU *cpu = S390_CPU(cs);
kvm_s390_set_cpu_state(cpu, cpu->env.cpu_state);
return 0;
}
void kvm_s390_reset_vcpu(S390CPU *cpu)
{
CPUState *cs = CPU(cpu);
/* The initial reset call is needed here to reset in-kernel
* vcpu data that we can't access directly from QEMU
* (i.e. with older kernels which don't support sync_regs/ONE_REG).
* 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);
}
}
static int can_sync_regs(CPUState *cs, int regs)
{
return cap_sync_regs && (cs->kvm_run->kvm_valid_regs & regs) == regs;
}
int kvm_arch_put_registers(CPUState *cs, int level)
{
S390CPU *cpu = S390_CPU(cs);
CPUS390XState *env = &cpu->env;
struct kvm_sregs sregs;
struct kvm_regs regs;
struct kvm_fpu fpu = {};
int r;
int i;
/* always save the PSW and the GPRS*/
cs->kvm_run->psw_addr = env->psw.addr;
cs->kvm_run->psw_mask = env->psw.mask;
if (can_sync_regs(cs, KVM_SYNC_GPRS)) {
for (i = 0; i < 16; i++) {
cs->kvm_run->s.regs.gprs[i] = env->regs[i];
cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_GPRS;
}
} else {
for (i = 0; i < 16; i++) {
regs.gprs[i] = env->regs[i];
}
r = kvm_vcpu_ioctl(cs, KVM_SET_REGS, ®s);
if (r < 0) {
return r;
}
}
/* Floating point */
for (i = 0; i < 16; i++) {
fpu.fprs[i] = env->fregs[i].ll;
}
fpu.fpc = env->fpc;
r = kvm_vcpu_ioctl(cs, KVM_SET_FPU, &fpu);
if (r < 0) {
return r;
}
/* Do we need to save more than that? */
if (level == KVM_PUT_RUNTIME_STATE) {
return 0;
}
if (can_sync_regs(cs, KVM_SYNC_ARCH0)) {
cs->kvm_run->s.regs.cputm = env->cputm;
cs->kvm_run->s.regs.ckc = env->ckc;
cs->kvm_run->s.regs.todpr = env->todpr;
cs->kvm_run->s.regs.gbea = env->gbea;
cs->kvm_run->s.regs.pp = env->pp;
cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_ARCH0;
} else {
/*
* These ONE_REGS are not protected by a capability. As they are only
* necessary for migration we just trace a possible error, but don't
* return with an error return code.
*/
kvm_set_one_reg(cs, KVM_REG_S390_CPU_TIMER, &env->cputm);
kvm_set_one_reg(cs, KVM_REG_S390_CLOCK_COMP, &env->ckc);
kvm_set_one_reg(cs, KVM_REG_S390_TODPR, &env->todpr);
kvm_set_one_reg(cs, KVM_REG_S390_GBEA, &env->gbea);
kvm_set_one_reg(cs, KVM_REG_S390_PP, &env->pp);
}
/* pfault parameters */
if (can_sync_regs(cs, KVM_SYNC_PFAULT)) {
cs->kvm_run->s.regs.pft = env->pfault_token;
cs->kvm_run->s.regs.pfs = env->pfault_select;
cs->kvm_run->s.regs.pfc = env->pfault_compare;
cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_PFAULT;
} else if (cap_async_pf) {
r = kvm_set_one_reg(cs, KVM_REG_S390_PFTOKEN, &env->pfault_token);
if (r < 0) {
return r;
}
r = kvm_set_one_reg(cs, KVM_REG_S390_PFCOMPARE, &env->pfault_compare);
if (r < 0) {
return r;
}
r = kvm_set_one_reg(cs, KVM_REG_S390_PFSELECT, &env->pfault_select);
if (r < 0) {
return r;
}
}
/* access registers and control registers*/
if (can_sync_regs(cs, KVM_SYNC_ACRS | KVM_SYNC_CRS)) {
for (i = 0; i < 16; i++) {
cs->kvm_run->s.regs.acrs[i] = env->aregs[i];
cs->kvm_run->s.regs.crs[i] = env->cregs[i];
}
cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_ACRS;
cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_CRS;
} else {
for (i = 0; i < 16; i++) {
sregs.acrs[i] = env->aregs[i];
sregs.crs[i] = env->cregs[i];
}
r = kvm_vcpu_ioctl(cs, KVM_SET_SREGS, &sregs);
if (r < 0) {
return r;
}
}
/* Finally the prefix */
if (can_sync_regs(cs, KVM_SYNC_PREFIX)) {
cs->kvm_run->s.regs.prefix = env->psa;
cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_PREFIX;
} else {
/* prefix is only supported via sync regs */
}
return 0;
}
int kvm_arch_get_registers(CPUState *cs)
{
S390CPU *cpu = S390_CPU(cs);
CPUS390XState *env = &cpu->env;
struct kvm_sregs sregs;
struct kvm_regs regs;
struct kvm_fpu fpu;
int i, r;
/* get the PSW */
env->psw.addr = cs->kvm_run->psw_addr;
env->psw.mask = cs->kvm_run->psw_mask;
/* the GPRS */
if (can_sync_regs(cs, KVM_SYNC_GPRS)) {
for (i = 0; i < 16; i++) {
env->regs[i] = cs->kvm_run->s.regs.gprs[i];
}
} else {
r = kvm_vcpu_ioctl(cs, KVM_GET_REGS, ®s);
if (r < 0) {
return r;
}
for (i = 0; i < 16; i++) {
env->regs[i] = regs.gprs[i];
}
}
/* The ACRS and CRS */
if (can_sync_regs(cs, KVM_SYNC_ACRS | KVM_SYNC_CRS)) {
for (i = 0; i < 16; i++) {
env->aregs[i] = cs->kvm_run->s.regs.acrs[i];
env->cregs[i] = cs->kvm_run->s.regs.crs[i];
}
} else {
r = kvm_vcpu_ioctl(cs, KVM_GET_SREGS, &sregs);
if (r < 0) {
return r;
}
for (i = 0; i < 16; i++) {
env->aregs[i] = sregs.acrs[i];
env->cregs[i] = sregs.crs[i];
}
}
/* 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];
}
env->fpc = fpu.fpc;
/* The prefix */
if (can_sync_regs(cs, KVM_SYNC_PREFIX)) {
env->psa = cs->kvm_run->s.regs.prefix;
}
if (can_sync_regs(cs, KVM_SYNC_ARCH0)) {
env->cputm = cs->kvm_run->s.regs.cputm;
env->ckc = cs->kvm_run->s.regs.ckc;
env->todpr = cs->kvm_run->s.regs.todpr;
env->gbea = cs->kvm_run->s.regs.gbea;
env->pp = cs->kvm_run->s.regs.pp;
} else {
/*
* These ONE_REGS are not protected by a capability. As they are only
* necessary for migration we just trace a possible error, but don't
* return with an error return code.
*/
kvm_get_one_reg(cs, KVM_REG_S390_CPU_TIMER, &env->cputm);
kvm_get_one_reg(cs, KVM_REG_S390_CLOCK_COMP, &env->ckc);
kvm_get_one_reg(cs, KVM_REG_S390_TODPR, &env->todpr);
kvm_get_one_reg(cs, KVM_REG_S390_GBEA, &env->gbea);
kvm_get_one_reg(cs, KVM_REG_S390_PP, &env->pp);
}
/* pfault parameters */
if (can_sync_regs(cs, KVM_SYNC_PFAULT)) {
env->pfault_token = cs->kvm_run->s.regs.pft;
env->pfault_select = cs->kvm_run->s.regs.pfs;
env->pfault_compare = cs->kvm_run->s.regs.pfc;
} else if (cap_async_pf) {
r = kvm_get_one_reg(cs, KVM_REG_S390_PFTOKEN, &env->pfault_token);
if (r < 0) {
return r;
}
r = kvm_get_one_reg(cs, KVM_REG_S390_PFCOMPARE, &env->pfault_compare);
if (r < 0) {
return r;
}
r = kvm_get_one_reg(cs, KVM_REG_S390_PFSELECT, &env->pfault_select);
if (r < 0) {
return r;
}
}
return 0;
}
/*
* Legacy layout for s390:
* Older S390 KVM requires the topmost vma of the RAM to be
* smaller than an system defined value, which is at least 256GB.
* Larger systems have larger values. We put the guest between
* the end of data segment (system break) and this value. We
* use 32GB as a base to have enough room for the system break
* to grow. We also have to use MAP parameters that avoid
* read-only mapping of guest pages.
*/
static void *legacy_s390_alloc(size_t size, uint64_t *align)
{
void *mem;
mem = mmap((void *) 0x800000000ULL, size,
PROT_EXEC|PROT_READ|PROT_WRITE,
MAP_SHARED | MAP_ANONYMOUS | MAP_FIXED, -1, 0);
return mem == MAP_FAILED ? NULL : mem;
}
/* DIAG 501 is used for sw breakpoints */
static const uint8_t diag_501[] = {0x83, 0x24, 0x05, 0x01};
int kvm_arch_insert_sw_breakpoint(CPUState *cs, struct kvm_sw_breakpoint *bp)
{
if (cpu_memory_rw_debug(cs, bp->pc, (uint8_t *)&bp->saved_insn,
sizeof(diag_501), 0) ||
cpu_memory_rw_debug(cs, bp->pc, (uint8_t *)diag_501,
sizeof(diag_501), 1)) {
return -EINVAL;
}
return 0;
}
int kvm_arch_remove_sw_breakpoint(CPUState *cs, struct kvm_sw_breakpoint *bp)
{
uint8_t t[sizeof(diag_501)];
if (cpu_memory_rw_debug(cs, bp->pc, t, sizeof(diag_501), 0)) {
return -EINVAL;
} else if (memcmp(t, diag_501, sizeof(diag_501))) {
return -EINVAL;
} else if (cpu_memory_rw_debug(cs, bp->pc, (uint8_t *)&bp->saved_insn,
sizeof(diag_501), 1)) {
return -EINVAL;
}
return 0;
}
static struct kvm_hw_breakpoint *find_hw_breakpoint(target_ulong addr,
int len, int type)
{
int n;
for (n = 0; n < nb_hw_breakpoints; n++) {
if (hw_breakpoints[n].addr == addr && hw_breakpoints[n].type == type &&
(hw_breakpoints[n].len == len || len == -1)) {
return &hw_breakpoints[n];
}
}
return NULL;
}
static int insert_hw_breakpoint(target_ulong addr, int len, int type)
{
int size;
if (find_hw_breakpoint(addr, len, type)) {
return -EEXIST;
}
size = (nb_hw_breakpoints + 1) * sizeof(struct kvm_hw_breakpoint);
if (!hw_breakpoints) {
nb_hw_breakpoints = 0;
hw_breakpoints = (struct kvm_hw_breakpoint *)g_try_malloc(size);
} else {
hw_breakpoints =
(struct kvm_hw_breakpoint *)g_try_realloc(hw_breakpoints, size);
}
if (!hw_breakpoints) {
nb_hw_breakpoints = 0;
return -ENOMEM;
}
hw_breakpoints[nb_hw_breakpoints].addr = addr;
hw_breakpoints[nb_hw_breakpoints].len = len;
hw_breakpoints[nb_hw_breakpoints].type = type;
nb_hw_breakpoints++;
return 0;
}
int kvm_arch_insert_hw_breakpoint(target_ulong addr,
target_ulong len, int type)
{
switch (type) {
case GDB_BREAKPOINT_HW:
type = KVM_HW_BP;
break;
case GDB_WATCHPOINT_WRITE:
if (len < 1) {
return -EINVAL;
}
type = KVM_HW_WP_WRITE;
break;
default:
return -ENOSYS;
}
return insert_hw_breakpoint(addr, len, type);
}
int kvm_arch_remove_hw_breakpoint(target_ulong addr,
target_ulong len, int type)
{
int size;
struct kvm_hw_breakpoint *bp = find_hw_breakpoint(addr, len, type);
if (bp == NULL) {
return -ENOENT;
}
nb_hw_breakpoints--;
if (nb_hw_breakpoints > 0) {
/*
* In order to trim the array, move the last element to the position to
* be removed - if necessary.
*/
if (bp != &hw_breakpoints[nb_hw_breakpoints]) {
*bp = hw_breakpoints[nb_hw_breakpoints];
}
size = nb_hw_breakpoints * sizeof(struct kvm_hw_breakpoint);
hw_breakpoints =
(struct kvm_hw_breakpoint *)g_realloc(hw_breakpoints, size);
} else {
g_free(hw_breakpoints);
hw_breakpoints = NULL;
}
return 0;
}
void kvm_arch_remove_all_hw_breakpoints(void)
{
nb_hw_breakpoints = 0;
g_free(hw_breakpoints);
hw_breakpoints = NULL;
}
void kvm_arch_update_guest_debug(CPUState *cpu, struct kvm_guest_debug *dbg)
{
int i;
if (nb_hw_breakpoints > 0) {
dbg->arch.nr_hw_bp = nb_hw_breakpoints;
dbg->arch.hw_bp = hw_breakpoints;
for (i = 0; i < nb_hw_breakpoints; ++i) {
hw_breakpoints[i].phys_addr = s390_cpu_get_phys_addr_debug(cpu,
hw_breakpoints[i].addr);
}
dbg->control |= KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_HW_BP;
} else {
dbg->arch.nr_hw_bp = 0;
dbg->arch.hw_bp = NULL;
}
}
void kvm_arch_pre_run(CPUState *cpu, struct kvm_run *run)
{
}
void kvm_arch_post_run(CPUState *cpu, struct kvm_run *run)
{
}
int kvm_arch_process_async_events(CPUState *cs)
{
return cs->halted;
}
static int s390_kvm_irq_to_interrupt(struct kvm_s390_irq *irq,
struct kvm_s390_interrupt *interrupt)
{
int r = 0;
interrupt->type = irq->type;
switch (irq->type) {
case KVM_S390_INT_VIRTIO:
interrupt->parm = irq->u.ext.ext_params;
/* fall through */
case KVM_S390_INT_PFAULT_INIT:
case KVM_S390_INT_PFAULT_DONE:
interrupt->parm64 = irq->u.ext.ext_params2;
break;
case KVM_S390_PROGRAM_INT:
interrupt->parm = irq->u.pgm.code;
break;
case KVM_S390_SIGP_SET_PREFIX:
interrupt->parm = irq->u.prefix.address;
break;
case KVM_S390_INT_SERVICE:
interrupt->parm = irq->u.ext.ext_params;
break;
case KVM_S390_MCHK:
interrupt->parm = irq->u.mchk.cr14;
interrupt->parm64 = irq->u.mchk.mcic;
break;
case KVM_S390_INT_EXTERNAL_CALL:
interrupt->parm = irq->u.extcall.code;
break;
case KVM_S390_INT_EMERGENCY:
interrupt->parm = irq->u.emerg.code;
break;
case KVM_S390_SIGP_STOP:
case KVM_S390_RESTART:
break; /* These types have no parameters */
case KVM_S390_INT_IO_MIN...KVM_S390_INT_IO_MAX:
interrupt->parm = irq->u.io.subchannel_id << 16;
interrupt->parm |= irq->u.io.subchannel_nr;
interrupt->parm64 = (uint64_t)irq->u.io.io_int_parm << 32;
interrupt->parm64 |= irq->u.io.io_int_word;
break;
default:
r = -EINVAL;
break;
}
return r;
}
void kvm_s390_vcpu_interrupt(S390CPU *cpu, struct kvm_s390_irq *irq)
{
struct kvm_s390_interrupt kvmint = {};
CPUState *cs = CPU(cpu);
int r;
r = s390_kvm_irq_to_interrupt(irq, &kvmint);
if (r < 0) {
fprintf(stderr, "%s called with bogus interrupt\n", __func__);
exit(1);
}
r = kvm_vcpu_ioctl(cs, KVM_S390_INTERRUPT, &kvmint);
if (r < 0) {
fprintf(stderr, "KVM failed to inject interrupt\n");
exit(1);
}
}
static void __kvm_s390_floating_interrupt(struct kvm_s390_irq *irq)
{
struct kvm_s390_interrupt kvmint = {};
int r;
r = s390_kvm_irq_to_interrupt(irq, &kvmint);
if (r < 0) {
fprintf(stderr, "%s called with bogus interrupt\n", __func__);
exit(1);
}
r = kvm_vm_ioctl(kvm_state, KVM_S390_INTERRUPT, &kvmint);
if (r < 0) {
fprintf(stderr, "KVM failed to inject interrupt\n");
exit(1);
}
}
void kvm_s390_floating_interrupt(struct kvm_s390_irq *irq)
{
static bool use_flic = true;
int r;
if (use_flic) {
r = kvm_s390_inject_flic(irq);
if (r == -ENOSYS) {
use_flic = false;
}
if (!r) {
return;
}
}
__kvm_s390_floating_interrupt(irq);
}
void kvm_s390_virtio_irq(int config_change, uint64_t token)
{
struct kvm_s390_irq irq = {
.type = KVM_S390_INT_VIRTIO,
.u.ext.ext_params = config_change,
.u.ext.ext_params2 = token,
};
kvm_s390_floating_interrupt(&irq);
}
void kvm_s390_service_interrupt(uint32_t parm)
{
struct kvm_s390_irq irq = {
.type = KVM_S390_INT_SERVICE,
.u.ext.ext_params = parm,
};
kvm_s390_floating_interrupt(&irq);
}
static void enter_pgmcheck(S390CPU *cpu, uint16_t code)
{
struct kvm_s390_irq irq = {
.type = KVM_S390_PROGRAM_INT,
.u.pgm.code = code,
};
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)
{
CPUS390XState *env = &cpu->env;
uint64_t sccb;
uint32_t code;
int r = 0;
cpu_synchronize_state(CPU(cpu));
sccb = env->regs[ipbh0 & 0xf];
code = env->regs[(ipbh0 & 0xf0) >> 4];
r = sclp_service_call(env, sccb, code);
if (r < 0) {
enter_pgmcheck(cpu, -r);
} else {
setcc(cpu, r);
}
return 0;
}
static int handle_b2(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
{
CPUS390XState *env = &cpu->env;
int rc = 0;
uint16_t ipbh0 = (run->s390_sieic.ipb & 0xffff0000) >> 16;
cpu_synchronize_state(CPU(cpu));
switch (ipa1) {
case PRIV_B2_XSCH:
ioinst_handle_xsch(cpu, env->regs[1]);
break;
case PRIV_B2_CSCH:
ioinst_handle_csch(cpu, env->regs[1]);
break;
case PRIV_B2_HSCH:
ioinst_handle_hsch(cpu, env->regs[1]);
break;
case PRIV_B2_MSCH:
ioinst_handle_msch(cpu, env->regs[1], run->s390_sieic.ipb);
break;
case PRIV_B2_SSCH:
ioinst_handle_ssch(cpu, env->regs[1], run->s390_sieic.ipb);
break;
case PRIV_B2_STCRW:
ioinst_handle_stcrw(cpu, run->s390_sieic.ipb);
break;
case PRIV_B2_STSCH:
ioinst_handle_stsch(cpu, env->regs[1], run->s390_sieic.ipb);
break;
case PRIV_B2_TSCH:
/* We should only get tsch via KVM_EXIT_S390_TSCH. */
fprintf(stderr, "Spurious tsch intercept\n");
break;
case PRIV_B2_CHSC:
ioinst_handle_chsc(cpu, run->s390_sieic.ipb);
break;
case PRIV_B2_TPI:
/* This should have been handled by kvm already. */
fprintf(stderr, "Spurious tpi intercept\n");
break;
case PRIV_B2_SCHM:
ioinst_handle_schm(cpu, env->regs[1], env->regs[2],
run->s390_sieic.ipb);
break;
case PRIV_B2_RSCH:
ioinst_handle_rsch(cpu, env->regs[1]);
break;
case PRIV_B2_RCHP:
ioinst_handle_rchp(cpu, env->regs[1]);
break;
case PRIV_B2_STCPS:
/* We do not provide this instruction, it is suppressed. */
break;
case PRIV_B2_SAL:
ioinst_handle_sal(cpu, env->regs[1]);
break;
case PRIV_B2_SIGA:
/* Not provided, set CC = 3 for subchannel not operational */
setcc(cpu, 3);
break;
case PRIV_B2_SCLP_CALL:
rc = kvm_sclp_service_call(cpu, run, ipbh0);
break;
default:
rc = -1;
DPRINTF("KVM: unhandled PRIV: 0xb2%x\n", ipa1);
break;
}
return rc;
}
static uint64_t get_base_disp_rxy(S390CPU *cpu, struct kvm_run *run)
{
CPUS390XState *env = &cpu->env;
uint32_t x2 = (run->s390_sieic.ipa & 0x000f);
uint32_t base2 = run->s390_sieic.ipb >> 28;
uint32_t disp2 = ((run->s390_sieic.ipb & 0x0fff0000) >> 16) +
((run->s390_sieic.ipb & 0xff00) << 4);
if (disp2 & 0x80000) {
disp2 += 0xfff00000;
}
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)
{
CPUS390XState *env = &cpu->env;
uint32_t base2 = run->s390_sieic.ipb >> 28;
uint32_t disp2 = ((run->s390_sieic.ipb & 0x0fff0000) >> 16) +
((run->s390_sieic.ipb & 0xff00) << 4);
if (disp2 & 0x80000) {
disp2 += 0xfff00000;
}
return (base2 ? env->regs[base2] : 0) + (long)(int)disp2;
}
static int kvm_clp_service_call(S390CPU *cpu, struct kvm_run *run)
{
uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16;
return clp_service_call(cpu, r2);
}
static int kvm_pcilg_service_call(S390CPU *cpu, struct kvm_run *run)
{
uint8_t r1 = (run->s390_sieic.ipb & 0x00f00000) >> 20;
uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16;
return pcilg_service_call(cpu, r1, r2);
}
static int kvm_pcistg_service_call(S390CPU *cpu, struct kvm_run *run)
{
uint8_t r1 = (run->s390_sieic.ipb & 0x00f00000) >> 20;
uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16;
return pcistg_service_call(cpu, r1, r2);
}
static int kvm_stpcifc_service_call(S390CPU *cpu, struct kvm_run *run)
{
uint8_t r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
uint64_t fiba;
cpu_synchronize_state(CPU(cpu));
fiba = get_base_disp_rxy(cpu, run);
return stpcifc_service_call(cpu, r1, fiba);
}
static int kvm_sic_service_call(S390CPU *cpu, struct kvm_run *run)
{
/* NOOP */
return 0;
}
static int kvm_rpcit_service_call(S390CPU *cpu, struct kvm_run *run)
{
uint8_t r1 = (run->s390_sieic.ipb & 0x00f00000) >> 20;
uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16;
return rpcit_service_call(cpu, r1, r2);
}
static int kvm_pcistb_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;
cpu_synchronize_state(CPU(cpu));
gaddr = get_base_disp_rsy(cpu, run);
return pcistb_service_call(cpu, r1, r3, gaddr);
}
static int kvm_mpcifc_service_call(S390CPU *cpu, struct kvm_run *run)
{
uint8_t r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
uint64_t fiba;
cpu_synchronize_state(CPU(cpu));
fiba = get_base_disp_rxy(cpu, run);
return mpcifc_service_call(cpu, r1, fiba);
}
static int handle_b9(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
{
int r = 0;
switch (ipa1) {
case PRIV_B9_CLP:
r = kvm_clp_service_call(cpu, run);
break;
case PRIV_B9_PCISTG:
r = kvm_pcistg_service_call(cpu, run);
break;
case PRIV_B9_PCILG:
r = kvm_pcilg_service_call(cpu, run);
break;
case PRIV_B9_RPCIT:
r = kvm_rpcit_service_call(cpu, run);
break;
case PRIV_B9_EQBS:
/* just inject exception */
r = -1;
break;
default:
r = -1;
DPRINTF("KVM: unhandled PRIV: 0xb9%x\n", ipa1);
break;
}
return r;
}
static int handle_eb(S390CPU *cpu, struct kvm_run *run, uint8_t ipbl)
{
int r = 0;