#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"
/* #define DEBUG_KVM */
#define IPA0_B9 0xb900
#define IPA0_EB 0xeb00
-#define PRIV_SCLP_CALL 0x20
-#define PRIV_CSCH 0x30
-#define PRIV_HSCH 0x31
-#define PRIV_MSCH 0x32
-#define PRIV_SSCH 0x33
-#define PRIV_STSCH 0x34
-#define PRIV_TSCH 0x35
-#define PRIV_TPI 0x36
-#define PRIV_SAL 0x37
-#define PRIV_RSCH 0x38
-#define PRIV_STCRW 0x39
-#define PRIV_STCPS 0x3a
-#define PRIV_RCHP 0x3b
-#define PRIV_SCHM 0x3c
-#define PRIV_CHSC 0x5f
-#define PRIV_SIGA 0x74
-#define PRIV_XSCH 0x76
-#define PRIV_SQBS 0x8a
-#define PRIV_EQBS 0x9c
+#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_B9_EQBS 0x9c
+
#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
-#define SIGP_RESTART 0x06
-#define SIGP_INITIAL_CPU_RESET 0x0b
-#define SIGP_STORE_STATUS_ADDR 0x0e
-#define SIGP_SET_ARCH 0x12
+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);
+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;
}
-void kvm_arch_reset_vcpu(CPUState *cpu)
+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(cpu, KVM_S390_INITIAL_RESET, NULL)) {
+ if (kvm_vcpu_ioctl(cs, KVM_S390_INITIAL_RESET, NULL)) {
perror("Can't reset vcpu\n");
}
}
{
S390CPU *cpu = S390_CPU(cs);
CPUS390XState *env = &cpu->env;
- struct kvm_one_reg reg;
struct kvm_sregs sregs;
struct kvm_regs regs;
- int ret;
+ int r;
int i;
/* always save the PSW and the GPRS*/
for (i = 0; i < 16; i++) {
regs.gprs[i] = env->regs[i];
}
- ret = kvm_vcpu_ioctl(cs, KVM_SET_REGS, ®s);
- if (ret < 0) {
- return ret;
+ r = kvm_vcpu_ioctl(cs, KVM_SET_REGS, ®s);
+ if (r < 0) {
+ return r;
}
}
- if (env->runtime_reg_dirty_mask == KVM_S390_RUNTIME_DIRTY_FULL) {
- reg.id = KVM_REG_S390_CPU_TIMER;
- reg.addr = (__u64)&(env->cputm);
- ret = kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, ®);
- if (ret < 0) {
- return ret;
- }
-
- reg.id = KVM_REG_S390_CLOCK_COMP;
- reg.addr = (__u64)&(env->ckc);
- ret = kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, ®);
- if (ret < 0) {
- return ret;
- }
-
- reg.id = KVM_REG_S390_TODPR;
- reg.addr = (__u64)&(env->todpr);
- ret = kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, ®);
- if (ret < 0) {
- return ret;
- }
- }
- env->runtime_reg_dirty_mask = KVM_S390_RUNTIME_DIRTY_NONE;
-
/* Do we need to save more than that? */
if (level == KVM_PUT_RUNTIME_STATE) {
return 0;
}
+ /*
+ * 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);
+
+ 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;
+ }
+ }
+
if (cap_sync_regs &&
cs->kvm_run->kvm_valid_regs & KVM_SYNC_ACRS &&
cs->kvm_run->kvm_valid_regs & KVM_SYNC_CRS) {
sregs.acrs[i] = env->aregs[i];
sregs.crs[i] = env->cregs[i];
}
- ret = kvm_vcpu_ioctl(cs, KVM_SET_SREGS, &sregs);
- if (ret < 0) {
- return ret;
+ r = kvm_vcpu_ioctl(cs, KVM_SET_SREGS, &sregs);
+ if (r < 0) {
+ return r;
}
}
}
int kvm_arch_get_registers(CPUState *cs)
-{
- S390CPU *cpu = S390_CPU(cs);
- CPUS390XState *env = &cpu->env;
- struct kvm_one_reg reg;
- int r;
-
- r = kvm_s390_get_registers_partial(cs);
- if (r < 0) {
- return r;
- }
-
- reg.id = KVM_REG_S390_CPU_TIMER;
- reg.addr = (__u64)&(env->cputm);
- r = kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, ®);
- if (r < 0) {
- return r;
- }
-
- reg.id = KVM_REG_S390_CLOCK_COMP;
- reg.addr = (__u64)&(env->ckc);
- r = kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, ®);
- if (r < 0) {
- return r;
- }
-
- reg.id = KVM_REG_S390_TODPR;
- reg.addr = (__u64)&(env->todpr);
- r = kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, ®);
- if (r < 0) {
- return r;
- }
-
- env->runtime_reg_dirty_mask = KVM_S390_RUNTIME_DIRTY_FULL;
- return 0;
-}
-
-int kvm_s390_get_registers_partial(CPUState *cs)
{
S390CPU *cpu = S390_CPU(cs);
CPUS390XState *env = &cpu->env;
struct kvm_sregs sregs;
struct kvm_regs regs;
- int ret;
- int i;
-
- if (env->runtime_reg_dirty_mask) {
- return 0;
- }
+ int i, r;
/* get the PSW */
env->psw.addr = cs->kvm_run->psw_addr;
env->regs[i] = cs->kvm_run->s.regs.gprs[i];
}
} else {
- ret = kvm_vcpu_ioctl(cs, KVM_GET_REGS, ®s);
- if (ret < 0) {
- return ret;
+ 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];
env->cregs[i] = cs->kvm_run->s.regs.crs[i];
}
} else {
- ret = kvm_vcpu_ioctl(cs, KVM_GET_SREGS, &sregs);
- if (ret < 0) {
- return ret;
+ 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];
}
}
- /* Finally the prefix */
+ /* The prefix */
if (cap_sync_regs && cs->kvm_run->kvm_valid_regs & KVM_SYNC_PREFIX) {
env->psa = cs->kvm_run->s.regs.prefix;
- } else {
- /* no prefix without sync regs */
}
- env->runtime_reg_dirty_mask = KVM_S390_RUNTIME_DIRTY_PARTIAL;
+ /*
+ * 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);
+
+ 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;
}
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)
{
- static const uint8_t diag_501[] = {0x83, 0x24, 0x05, 0x01};
- if (cpu_memory_rw_debug(cs, bp->pc, (uint8_t *)&bp->saved_insn, 4, 0) ||
- cpu_memory_rw_debug(cs, bp->pc, (uint8_t *)diag_501, 4, 1)) {
+ 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[4];
- static const uint8_t diag_501[] = {0x83, 0x24, 0x05, 0x01};
+ uint8_t t[sizeof(diag_501)];
- if (cpu_memory_rw_debug(cs, bp->pc, t, 4, 0)) {
+ if (cpu_memory_rw_debug(cs, bp->pc, t, sizeof(diag_501), 0)) {
return -EINVAL;
- } else if (memcmp(t, diag_501, 4)) {
+ } 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, 1, 1)) {
+ } 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)
{
}
uint16_t ipbh0)
{
CPUS390XState *env = &cpu->env;
- uint32_t sccb;
- uint64_t code;
+ uint64_t sccb;
+ uint32_t code;
int r = 0;
cpu_synchronize_state(CPU(cpu));
- if (env->psw.mask & PSW_MASK_PSTATE) {
- enter_pgmcheck(cpu, PGM_PRIVILEGED);
- return 0;
- }
sccb = env->regs[ipbh0 & 0xf];
code = env->regs[(ipbh0 & 0xf0) >> 4];
- r = sclp_service_call(sccb, code);
+ r = sclp_service_call(env, sccb, code);
if (r < 0) {
enter_pgmcheck(cpu, -r);
+ } else {
+ setcc(cpu, r);
}
- setcc(cpu, r);
return 0;
}
-static int kvm_handle_css_inst(S390CPU *cpu, struct kvm_run *run,
- uint8_t ipa0, uint8_t ipa1, uint8_t ipb)
+static int handle_b2(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
{
CPUS390XState *env = &cpu->env;
- CPUState *cs = CPU(cpu);
-
- if (ipa0 != 0xb2) {
- /* Not handled for now. */
- return -1;
- }
+ int rc = 0;
+ uint16_t ipbh0 = (run->s390_sieic.ipb & 0xffff0000) >> 16;
- kvm_s390_get_registers_partial(cs);
- cs->kvm_vcpu_dirty = true;
+ cpu_synchronize_state(CPU(cpu));
switch (ipa1) {
- case PRIV_XSCH:
+ case PRIV_B2_XSCH:
ioinst_handle_xsch(cpu, env->regs[1]);
break;
- case PRIV_CSCH:
+ case PRIV_B2_CSCH:
ioinst_handle_csch(cpu, env->regs[1]);
break;
- case PRIV_HSCH:
+ case PRIV_B2_HSCH:
ioinst_handle_hsch(cpu, env->regs[1]);
break;
- case PRIV_MSCH:
+ case PRIV_B2_MSCH:
ioinst_handle_msch(cpu, env->regs[1], run->s390_sieic.ipb);
break;
- case PRIV_SSCH:
+ case PRIV_B2_SSCH:
ioinst_handle_ssch(cpu, env->regs[1], run->s390_sieic.ipb);
break;
- case PRIV_STCRW:
+ case PRIV_B2_STCRW:
ioinst_handle_stcrw(cpu, run->s390_sieic.ipb);
break;
- case PRIV_STSCH:
+ case PRIV_B2_STSCH:
ioinst_handle_stsch(cpu, env->regs[1], run->s390_sieic.ipb);
break;
- case PRIV_TSCH:
+ case PRIV_B2_TSCH:
/* We should only get tsch via KVM_EXIT_S390_TSCH. */
fprintf(stderr, "Spurious tsch intercept\n");
break;
- case PRIV_CHSC:
+ case PRIV_B2_CHSC:
ioinst_handle_chsc(cpu, run->s390_sieic.ipb);
break;
- case PRIV_TPI:
+ case PRIV_B2_TPI:
/* This should have been handled by kvm already. */
fprintf(stderr, "Spurious tpi intercept\n");
break;
- case PRIV_SCHM:
+ case PRIV_B2_SCHM:
ioinst_handle_schm(cpu, env->regs[1], env->regs[2],
run->s390_sieic.ipb);
break;
- case PRIV_RSCH:
+ case PRIV_B2_RSCH:
ioinst_handle_rsch(cpu, env->regs[1]);
break;
- case PRIV_RCHP:
+ case PRIV_B2_RCHP:
ioinst_handle_rchp(cpu, env->regs[1]);
break;
- case PRIV_STCPS:
+ case PRIV_B2_STCPS:
/* We do not provide this instruction, it is suppressed. */
break;
- case PRIV_SAL:
+ case PRIV_B2_SAL:
ioinst_handle_sal(cpu, env->regs[1]);
break;
- case PRIV_SIGA:
+ 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:
- return -1;
+ rc = -1;
+ DPRINTF("KVM: unhandled PRIV: 0xb2%x\n", ipa1);
+ break;
}
- return 0;
+ return rc;
}
-static int handle_priv(S390CPU *cpu, struct kvm_run *run,
- uint8_t ipa0, uint8_t ipa1)
+static int handle_b9(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
{
int r = 0;
- uint16_t ipbh0 = (run->s390_sieic.ipb & 0xffff0000) >> 16;
- uint8_t ipb = run->s390_sieic.ipb & 0xff;
- DPRINTF("KVM: PRIV: %d\n", ipa1);
switch (ipa1) {
- case PRIV_SCLP_CALL:
- r = kvm_sclp_service_call(cpu, run, ipbh0);
- break;
- default:
- r = kvm_handle_css_inst(cpu, run, ipa0, ipa1, ipb);
- if (r == -1) {
- DPRINTF("KVM: unhandled PRIV: 0x%x\n", ipa1);
- }
- 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 ipa1)
+{
+ int r = 0;
+
+ switch (ipa1) {
+ case PRIV_EB_SQBS:
+ /* just inject exception */
+ r = -1;
+ break;
+ default:
+ r = -1;
+ DPRINTF("KVM: unhandled PRIV: 0xeb%x\n", ipa1);
+ break;
}
return r;
static int handle_hypercall(S390CPU *cpu, struct kvm_run *run)
{
- CPUState *cs = CPU(cpu);
CPUS390XState *env = &cpu->env;
+ int ret;
- kvm_s390_get_registers_partial(cs);
- cs->kvm_vcpu_dirty = true;
- env->regs[2] = s390_virtio_hypercall(env);
+ cpu_synchronize_state(CPU(cpu));
+ ret = s390_virtio_hypercall(env);
+ if (ret == -EINVAL) {
+ enter_pgmcheck(cpu, PGM_SPECIFICATION);
+ return 0;
+ }
- return 0;
+ return ret;
}
static void kvm_handle_diag_308(S390CPU *cpu, struct kvm_run *run)
handle_diag_308(&cpu->env, r1, r3);
}
-static int handle_diag(S390CPU *cpu, struct kvm_run *run, int ipb_code)
+static int handle_sw_breakpoint(S390CPU *cpu, struct kvm_run *run)
{
- int r = 0;
+ CPUS390XState *env = &cpu->env;
+ unsigned long pc;
+
+ cpu_synchronize_state(CPU(cpu));
+
+ pc = env->psw.addr - 4;
+ if (kvm_find_sw_breakpoint(CPU(cpu), pc)) {
+ env->psw.addr = pc;
+ return EXCP_DEBUG;
+ }
- switch (ipb_code) {
+ return -ENOENT;
+}
+
+#define DIAG_KVM_CODE_MASK 0x000000000000ffff
+
+static int handle_diag(S390CPU *cpu, struct kvm_run *run, uint32_t ipb)
+{
+ int r = 0;
+ uint16_t func_code;
+
+ /*
+ * 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;
+ switch (func_code) {
case DIAG_IPL:
kvm_handle_diag_308(cpu, run);
break;
r = handle_hypercall(cpu, run);
break;
case DIAG_KVM_BREAKPOINT:
- sleep(10);
+ r = handle_sw_breakpoint(cpu, run);
break;
default:
- DPRINTF("KVM: unknown DIAG: 0x%x\n", ipb_code);
+ DPRINTF("KVM: unknown DIAG: 0x%x\n", func_code);
r = -1;
break;
}
return r;
}
+static int kvm_s390_cpu_start(S390CPU *cpu)
+{
+ s390_add_running_cpu(cpu);
+ qemu_cpu_kick(CPU(cpu));
+ DPRINTF("DONE: KVM cpu start: %p\n", &cpu->env);
+ return 0;
+}
+
int kvm_s390_cpu_restart(S390CPU *cpu)
{
kvm_s390_interrupt(cpu, KVM_S390_RESTART, 0);
return 0;
}
-static int s390_store_status(CPUS390XState *env, uint32_t parameter)
+static void sigp_initial_cpu_reset(void *arg)
{
- /* XXX */
- fprintf(stderr, "XXX SIGP store status\n");
- return -1;
+ CPUState *cpu = arg;
+ S390CPUClass *scc = S390_CPU_GET_CLASS(cpu);
+
+ cpu_synchronize_state(cpu);
+ scc->initial_cpu_reset(cpu);
}
-static int s390_cpu_initial_reset(S390CPU *cpu)
+static void sigp_cpu_reset(void *arg)
{
- CPUState *cs = CPU(cpu);
- CPUS390XState *env = &cpu->env;
- int i;
-
- s390_del_running_cpu(cpu);
- if (kvm_vcpu_ioctl(cs, KVM_S390_INITIAL_RESET, NULL) < 0) {
- perror("cannot init reset vcpu");
- }
-
- /* Manually zero out all registers */
- cpu_synchronize_state(cs);
- for (i = 0; i < 16; i++) {
- env->regs[i] = 0;
- }
+ CPUState *cpu = arg;
+ S390CPUClass *scc = S390_CPU_GET_CLASS(cpu);
- DPRINTF("DONE: SIGP initial reset: %p\n", env);
- return 0;
+ cpu_synchronize_state(cpu);
+ scc->cpu_reset(cpu);
}
+#define SIGP_ORDER_MASK 0x000000ff
+
static int handle_sigp(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
{
CPUS390XState *env = &cpu->env;
uint8_t order_code;
- uint32_t parameter;
uint16_t cpu_addr;
- uint8_t t;
- int r = -1;
S390CPU *target_cpu;
- CPUS390XState *target_env;
+ uint64_t *statusreg = &env->regs[ipa1 >> 4];
+ int cc;
cpu_synchronize_state(CPU(cpu));
/* get order code */
- order_code = run->s390_sieic.ipb >> 28;
- if (order_code > 0) {
- order_code = env->regs[order_code];
- }
- order_code += (run->s390_sieic.ipb & 0x0fff0000) >> 16;
+ order_code = decode_basedisp_rs(env, run->s390_sieic.ipb) & SIGP_ORDER_MASK;
- /* get parameters */
- t = (ipa1 & 0xf0) >> 4;
- if (!(t % 2)) {
- t++;
- }
-
- parameter = env->regs[t] & 0x7ffffe00;
cpu_addr = env->regs[ipa1 & 0x0f];
-
target_cpu = s390_cpu_addr2state(cpu_addr);
if (target_cpu == NULL) {
+ cc = 3; /* not operational */
goto out;
}
- target_env = &target_cpu->env;
switch (order_code) {
- case SIGP_RESTART:
- r = kvm_s390_cpu_restart(target_cpu);
- break;
- case SIGP_STORE_STATUS_ADDR:
- r = s390_store_status(target_env, parameter);
- break;
- case SIGP_SET_ARCH:
- /* make the caller panic */
- return -1;
- case SIGP_INITIAL_CPU_RESET:
- r = s390_cpu_initial_reset(target_cpu);
- break;
- default:
- fprintf(stderr, "KVM: unknown SIGP: 0x%x\n", order_code);
- break;
+ case SIGP_START:
+ cc = kvm_s390_cpu_start(target_cpu);
+ break;
+ case SIGP_RESTART:
+ cc = kvm_s390_cpu_restart(target_cpu);
+ break;
+ case SIGP_SET_ARCH:
+ *statusreg &= 0xffffffff00000000UL;
+ *statusreg |= SIGP_STAT_INVALID_PARAMETER;
+ cc = 1; /* status stored */
+ break;
+ case SIGP_INITIAL_CPU_RESET:
+ run_on_cpu(CPU(target_cpu), sigp_initial_cpu_reset, CPU(target_cpu));
+ cc = 0;
+ break;
+ case SIGP_CPU_RESET:
+ run_on_cpu(CPU(target_cpu), sigp_cpu_reset, CPU(target_cpu));
+ cc = 0;
+ break;
+ default:
+ DPRINTF("KVM: unknown SIGP: 0x%x\n", order_code);
+ *statusreg &= 0xffffffff00000000UL;
+ *statusreg |= SIGP_STAT_INVALID_ORDER;
+ cc = 1; /* status stored */
+ break;
}
out:
- setcc(cpu, r ? 3 : 0);
+ setcc(cpu, cc);
return 0;
}
-static void handle_instruction(S390CPU *cpu, struct kvm_run *run)
+static int handle_instruction(S390CPU *cpu, struct kvm_run *run)
{
unsigned int ipa0 = (run->s390_sieic.ipa & 0xff00);
uint8_t ipa1 = run->s390_sieic.ipa & 0x00ff;
- int ipb_code = (run->s390_sieic.ipb & 0x0fff0000) >> 16;
int r = -1;
DPRINTF("handle_instruction 0x%x 0x%x\n",
run->s390_sieic.ipa, run->s390_sieic.ipb);
switch (ipa0) {
case IPA0_B2:
+ r = handle_b2(cpu, run, ipa1);
+ break;
case IPA0_B9:
+ r = handle_b9(cpu, run, ipa1);
+ break;
case IPA0_EB:
- r = handle_priv(cpu, run, ipa0 >> 8, ipa1);
+ r = handle_eb(cpu, run, ipa1);
break;
case IPA0_DIAG:
- r = handle_diag(cpu, run, ipb_code);
+ r = handle_diag(cpu, run, run->s390_sieic.ipb);
break;
case IPA0_SIGP:
r = handle_sigp(cpu, run, ipa1);
}
if (r < 0) {
+ r = 0;
enter_pgmcheck(cpu, 0x0001);
}
+
+ return r;
}
static bool is_special_wait_psw(CPUState *cs)
return cs->kvm_run->psw_addr == 0xfffUL;
}
+static void guest_panicked(void)
+{
+ QObject *data;
+
+ data = qobject_from_jsonf("{ 'action': %s }", "pause");
+ monitor_protocol_event(QEVENT_GUEST_PANICKED, data);
+ qobject_decref(data);
+
+ vm_stop(RUN_STATE_GUEST_PANICKED);
+}
+
+static void unmanageable_intercept(S390CPU *cpu, const char *str, int pswoffset)
+{
+ CPUState *cs = CPU(cpu);
+
+ error_report("Unmanageable %s! CPU%i new PSW: 0x%016lx:%016lx",
+ str, cs->cpu_index, ldq_phys(cs->as, cpu->env.psa + pswoffset),
+ ldq_phys(cs->as, cpu->env.psa + pswoffset + 8));
+ s390_del_running_cpu(cpu);
+ guest_panicked();
+}
+
static int handle_intercept(S390CPU *cpu)
{
CPUState *cs = CPU(cpu);
(long)cs->kvm_run->psw_addr);
switch (icpt_code) {
case ICPT_INSTRUCTION:
- handle_instruction(cpu, run);
+ r = handle_instruction(cpu, run);
+ break;
+ case ICPT_PROGRAM:
+ unmanageable_intercept(cpu, "program interrupt",
+ offsetof(LowCore, program_new_psw));
+ r = EXCP_HALTED;
+ break;
+ case ICPT_EXT_INT:
+ unmanageable_intercept(cpu, "external interrupt",
+ offsetof(LowCore, external_new_psw));
+ r = EXCP_HALTED;
break;
case ICPT_WAITPSW:
/* disabled wait, since enabled wait is handled in kernel */
if (is_special_wait_psw(cs)) {
qemu_system_shutdown_request();
} else {
- QObject *data;
-
- data = qobject_from_jsonf("{ 'action': %s }", "pause");
- monitor_protocol_event(QEVENT_GUEST_PANICKED, data);
- qobject_decref(data);
- vm_stop(RUN_STATE_GUEST_PANICKED);
+ guest_panicked();
}
}
r = EXCP_HALTED;
struct kvm_run *run = cs->kvm_run;
int ret;
- kvm_s390_get_registers_partial(cs);
- cs->kvm_vcpu_dirty = true;
+ cpu_synchronize_state(cs);
ret = ioinst_handle_tsch(env, env->regs[1], run->s390_tsch.ipb);
if (ret >= 0) {
return ret;
}
+static int kvm_arch_handle_debug_exit(S390CPU *cpu)
+{
+ CPUState *cs = CPU(cpu);
+ struct kvm_run *run = cs->kvm_run;
+
+ int ret = 0;
+ struct kvm_debug_exit_arch *arch_info = &run->debug.arch;
+
+ switch (arch_info->type) {
+ case KVM_HW_WP_WRITE:
+ if (find_hw_breakpoint(arch_info->addr, -1, arch_info->type)) {
+ cs->watchpoint_hit = &hw_watchpoint;
+ hw_watchpoint.vaddr = arch_info->addr;
+ hw_watchpoint.flags = BP_MEM_WRITE;
+ ret = EXCP_DEBUG;
+ }
+ break;
+ case KVM_HW_BP:
+ if (find_hw_breakpoint(arch_info->addr, -1, arch_info->type)) {
+ ret = EXCP_DEBUG;
+ }
+ break;
+ case KVM_SINGLESTEP:
+ if (cs->singlestep_enabled) {
+ ret = EXCP_DEBUG;
+ }
+ break;
+ default:
+ ret = -ENOSYS;
+ }
+
+ return ret;
+}
+
int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run)
{
S390CPU *cpu = S390_CPU(cs);
case KVM_EXIT_S390_TSCH:
ret = handle_tsch(cpu);
break;
+ case KVM_EXIT_DEBUG:
+ ret = kvm_arch_handle_debug_exit(cpu);
+ break;
default:
fprintf(stderr, "Unknown KVM exit: %d\n", run->exit_reason);
break;
{
uint32_t type;
- type = ((subchannel_id & 0xff00) << 24) |
- ((subchannel_id & 0x00060) << 22) | (subchannel_nr << 16);
+ if (io_int_word & IO_INT_WORD_AI) {
+ type = KVM_S390_INT_IO(1, 0, 0, 0);
+ } else {
+ type = ((subchannel_id & 0xff00) << 24) |
+ ((subchannel_id & 0x00060) << 22) | (subchannel_nr << 16);
+ }
kvm_s390_interrupt_internal(cpu, type,
((uint32_t)subchannel_id << 16) | subchannel_nr,
((uint64_t)io_int_parm << 32) | io_int_word, 1);
void kvm_s390_enable_css_support(S390CPU *cpu)
{
- struct kvm_enable_cap cap = {};
int r;
/* Activate host kernel channel subsystem support. */
- cap.cap = KVM_CAP_S390_CSS_SUPPORT;
- r = kvm_vcpu_ioctl(CPU(cpu), KVM_ENABLE_CAP, &cap);
+ r = kvm_vcpu_enable_cap(CPU(cpu), KVM_CAP_S390_CSS_SUPPORT, 0);
assert(r == 0);
}
void kvm_arch_init_irq_routing(KVMState *s)
{
+ /*
+ * Note that while irqchip capabilities generally imply that cpustates
+ * are handled in-kernel, it is not true for s390 (yet); therefore, we
+ * have to override the common code kvm_halt_in_kernel_allowed setting.
+ */
+ if (kvm_check_extension(s, KVM_CAP_IRQ_ROUTING)) {
+ kvm_irqfds_allowed = true;
+ kvm_gsi_routing_allowed = true;
+ kvm_halt_in_kernel_allowed = false;
+ }
}
int kvm_s390_assign_subch_ioeventfd(EventNotifier *notifier, uint32_t sch,
projects / mirror_qemu.git / blobdiff