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-rw-r--r--target-s390x/cpu.c15
-rw-r--r--target-s390x/cpu.h6
-rw-r--r--target-s390x/kvm.c249
-rw-r--r--target-s390x/misc_helper.c2
4 files changed, 183 insertions, 89 deletions
diff --git a/target-s390x/cpu.c b/target-s390x/cpu.c
index ff57b806e4..1a8c1cc39f 100644
--- a/target-s390x/cpu.c
+++ b/target-s390x/cpu.c
@@ -83,6 +83,7 @@ static void s390_cpu_reset(CPUState *s)
S390CPUClass *scc = S390_CPU_GET_CLASS(cpu);
CPUS390XState *env = &cpu->env;
+ env->pfault_token = -1UL;
s390_del_running_cpu(cpu);
scc->parent_reset(s);
#if !defined(CONFIG_USER_ONLY)
@@ -105,6 +106,17 @@ static void s390_cpu_initial_reset(CPUState *s)
/* architectured initial values for CR 0 and 14 */
env->cregs[0] = CR0_RESET;
env->cregs[14] = CR14_RESET;
+
+ env->pfault_token = -1UL;
+
+#if defined(CONFIG_KVM)
+ /* Reset state inside the kernel that we cannot access yet from QEMU. */
+ if (kvm_enabled()) {
+ if (kvm_vcpu_ioctl(s, KVM_S390_INITIAL_RESET, NULL)) {
+ perror("Initial CPU reset failed");
+ }
+ }
+#endif
}
/* CPUClass:reset() */
@@ -123,6 +135,9 @@ static void s390_cpu_full_reset(CPUState *s)
/* architectured initial values for CR 0 and 14 */
env->cregs[0] = CR0_RESET;
env->cregs[14] = CR14_RESET;
+
+ env->pfault_token = -1UL;
+
/* set halted to 1 to make sure we can add the cpu in
* s390_ipl_cpu code, where CPUState::halted is set back to 0
* after incrementing the cpu counter */
diff --git a/target-s390x/cpu.h b/target-s390x/cpu.h
index 6d46827990..effe84b102 100644
--- a/target-s390x/cpu.h
+++ b/target-s390x/cpu.h
@@ -122,6 +122,10 @@ typedef struct CPUS390XState {
uint64_t cputm;
uint32_t todpr;
+ uint64_t pfault_token;
+ uint64_t pfault_compare;
+ uint64_t pfault_select;
+
CPU_COMMON
/* reset does memset(0) up to here */
@@ -960,7 +964,7 @@ struct sysib_322 {
void load_psw(CPUS390XState *env, uint64_t mask, uint64_t addr);
int mmu_translate(CPUS390XState *env, target_ulong vaddr, int rw, uint64_t asc,
target_ulong *raddr, int *flags);
-int sclp_service_call(uint32_t sccb, uint64_t code);
+int sclp_service_call(CPUS390XState *env, uint64_t sccb, uint32_t code);
uint32_t calc_cc(CPUS390XState *env, uint32_t cc_op, uint64_t src, uint64_t dst,
uint64_t vr);
diff --git a/target-s390x/kvm.c b/target-s390x/kvm.c
index f60ccdc326..11feda9eb9 100644
--- a/target-s390x/kvm.c
+++ b/target-s390x/kvm.c
@@ -53,25 +53,28 @@
#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
@@ -87,12 +90,14 @@ const KVMCapabilityInfo kvm_arch_required_capabilities[] = {
};
static int cap_sync_regs;
+static int cap_async_pf;
static void *legacy_s390_alloc(size_t size);
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_S390_GMAP)
|| !kvm_check_extension(s, KVM_CAP_S390_COW)) {
phys_mem_set_alloc(legacy_s390_alloc);
@@ -178,6 +183,29 @@ int kvm_arch_put_registers(CPUState *cs, int level)
return ret;
}
+ if (cap_async_pf) {
+ reg.id = KVM_REG_S390_PFTOKEN;
+ reg.addr = (__u64)&(env->pfault_token);
+ ret = kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, &reg);
+ if (ret < 0) {
+ return ret;
+ }
+
+ reg.id = KVM_REG_S390_PFCOMPARE;
+ reg.addr = (__u64)&(env->pfault_compare);
+ ret = kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, &reg);
+ if (ret < 0) {
+ return ret;
+ }
+
+ reg.id = KVM_REG_S390_PFSELECT;
+ reg.addr = (__u64)&(env->pfault_select);
+ ret = kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, &reg);
+ if (ret < 0) {
+ return ret;
+ }
+ }
+
if (cap_sync_regs &&
cs->kvm_run->kvm_valid_regs & KVM_SYNC_ACRS &&
cs->kvm_run->kvm_valid_regs & KVM_SYNC_CRS) {
@@ -282,6 +310,29 @@ int kvm_arch_get_registers(CPUState *cs)
return r;
}
+ if (cap_async_pf) {
+ reg.id = KVM_REG_S390_PFTOKEN;
+ reg.addr = (__u64)&(env->pfault_token);
+ r = kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, &reg);
+ if (r < 0) {
+ return r;
+ }
+
+ reg.id = KVM_REG_S390_PFCOMPARE;
+ reg.addr = (__u64)&(env->pfault_compare);
+ r = kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, &reg);
+ if (r < 0) {
+ return r;
+ }
+
+ reg.id = KVM_REG_S390_PFSELECT;
+ reg.addr = (__u64)&(env->pfault_select);
+ r = kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, &reg);
+ if (r < 0) {
+ return r;
+ }
+ }
+
return 0;
}
@@ -392,117 +443,128 @@ static int kvm_sclp_service_call(S390CPU *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;
-
- if (ipa0 != 0xb2) {
- /* Not handled for now. */
- return -1;
- }
+ int rc = 0;
+ uint16_t ipbh0 = (run->s390_sieic.ipb & 0xffff0000) >> 16;
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;
@@ -511,11 +573,16 @@ static int handle_priv(S390CPU *cpu, struct kvm_run *run,
static int handle_hypercall(S390CPU *cpu, struct kvm_run *run)
{
CPUS390XState *env = &cpu->env;
+ int ret;
cpu_synchronize_state(CPU(cpu));
- env->regs[2] = s390_virtio_hypercall(env);
+ 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)
@@ -576,25 +643,22 @@ int kvm_s390_cpu_restart(S390CPU *cpu)
return 0;
}
-static int s390_cpu_initial_reset(S390CPU *cpu)
+static void sigp_initial_cpu_reset(void *arg)
{
- CPUState *cs = CPU(cpu);
- CPUS390XState *env = &cpu->env;
- int i;
+ CPUState *cpu = arg;
+ S390CPUClass *scc = S390_CPU_GET_CLASS(cpu);
- s390_del_running_cpu(cpu);
- if (kvm_vcpu_ioctl(cs, KVM_S390_INITIAL_RESET, NULL) < 0) {
- perror("cannot init reset vcpu");
- }
+ cpu_synchronize_state(cpu);
+ scc->initial_cpu_reset(cpu);
+}
- /* Manually zero out all registers */
- cpu_synchronize_state(cs);
- for (i = 0; i < 16; i++) {
- env->regs[i] = 0;
- }
+static void sigp_cpu_reset(void *arg)
+{
+ 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
@@ -628,10 +692,17 @@ static int handle_sigp(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
cc = kvm_s390_cpu_restart(target_cpu);
break;
case SIGP_SET_ARCH:
- /* make the caller panic */
- return -1;
+ *statusreg &= 0xffffffff00000000UL;
+ *statusreg |= SIGP_STAT_INVALID_PARAMETER;
+ cc = 1; /* status stored */
+ break;
case SIGP_INITIAL_CPU_RESET:
- cc = s390_cpu_initial_reset(target_cpu);
+ 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);
@@ -656,9 +727,13 @@ static void handle_instruction(S390CPU *cpu, struct kvm_run *run)
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, run->s390_sieic.ipb);
diff --git a/target-s390x/misc_helper.c b/target-s390x/misc_helper.c
index 10d04252d5..728456f295 100644
--- a/target-s390x/misc_helper.c
+++ b/target-s390x/misc_helper.c
@@ -93,7 +93,7 @@ void program_interrupt(CPUS390XState *env, uint32_t code, int ilen)
/* SCLP service call */
uint32_t HELPER(servc)(CPUS390XState *env, uint64_t r1, uint64_t r2)
{
- int r = sclp_service_call(r1, r2);
+ int r = sclp_service_call(env, r1, r2);
if (r < 0) {
program_interrupt(env, -r, 4);
return 0;
generated by cgit v1.2.1 (git 2.18.0) at 2024-05-13 21:02:29 +0000