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Diffstat (limited to 'target/s390x/kvm.c')
-rw-r--r--target/s390x/kvm.c2393
1 files changed, 0 insertions, 2393 deletions
diff --git a/target/s390x/kvm.c b/target/s390x/kvm.c
deleted file mode 100644
index 2ebf26adfe..0000000000
--- a/target/s390x/kvm.c
+++ /dev/null
@@ -1,2393 +0,0 @@
-/*
- * QEMU S390x KVM implementation
- *
- * Copyright (c) 2009 Alexander Graf <agraf@suse.de>
- * 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 "qemu/osdep.h"
-#include <sys/ioctl.h>
-
-#include <linux/kvm.h>
-#include <asm/ptrace.h>
-
-#include "qemu-common.h"
-#include "cpu.h"
-#include "internal.h"
-#include "kvm_s390x.h"
-#include "qapi/error.h"
-#include "qemu/error-report.h"
-#include "qemu/timer.h"
-#include "qemu/units.h"
-#include "qemu/mmap-alloc.h"
-#include "qemu/log.h"
-#include "sysemu/sysemu.h"
-#include "sysemu/hw_accel.h"
-#include "hw/hw.h"
-#include "sysemu/device_tree.h"
-#include "exec/gdbstub.h"
-#include "trace.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"
-#include "hw/s390x/s390-virtio-ccw.h"
-#include "hw/s390x/s390-virtio-hcall.h"
-
-#ifndef DEBUG_KVM
-#define DEBUG_KVM 0
-#endif
-
-#define DPRINTF(fmt, ...) do { \
- if (DEBUG_KVM) { \
- fprintf(stderr, fmt, ## __VA_ARGS__); \
- } \
-} while (0)
-
-#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 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_TIMEREVENT 0x288
-#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_OPEREXC 0x2c
-#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
- * 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 int cap_mem_op;
-static int cap_s390_irq;
-static int cap_ri;
-static int cap_gs;
-static int cap_hpage_1m;
-
-static int active_cmma;
-
-static void *legacy_s390_alloc(size_t size, uint64_t *align, bool shared);
-
-static int kvm_s390_query_mem_limit(uint64_t *memory_limit)
-{
- struct kvm_device_attr attr = {
- .group = KVM_S390_VM_MEM_CTRL,
- .attr = KVM_S390_VM_MEM_LIMIT_SIZE,
- .addr = (uint64_t) memory_limit,
- };
-
- return kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
-}
-
-int kvm_s390_set_mem_limit(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_LIMIT_SIZE,
- .addr = (uint64_t) &new_limit,
- };
-
- if (!kvm_vm_check_mem_attr(kvm_state, KVM_S390_VM_MEM_LIMIT_SIZE)) {
- return 0;
- }
-
- rc = kvm_s390_query_mem_limit(hw_limit);
- if (rc) {
- return rc;
- } else if (*hw_limit < new_limit) {
- return -E2BIG;
- }
-
- return kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
-}
-
-int kvm_s390_cmma_active(void)
-{
- return active_cmma;
-}
-
-static bool kvm_s390_cmma_available(void)
-{
- static bool initialized, value;
-
- if (!initialized) {
- initialized = true;
- value = kvm_vm_check_mem_attr(kvm_state, KVM_S390_VM_MEM_ENABLE_CMMA) &&
- kvm_vm_check_mem_attr(kvm_state, KVM_S390_VM_MEM_CLR_CMMA);
- }
- return value;
-}
-
-void kvm_s390_cmma_reset(void)
-{
- int rc;
- struct kvm_device_attr attr = {
- .group = KVM_S390_VM_MEM_CTRL,
- .attr = KVM_S390_VM_MEM_CLR_CMMA,
- };
-
- if (!kvm_s390_cmma_active()) {
- return;
- }
-
- rc = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
- trace_kvm_clear_cmma(rc);
-}
-
-static void kvm_s390_enable_cmma(void)
-{
- int rc;
- struct kvm_device_attr attr = {
- .group = KVM_S390_VM_MEM_CTRL,
- .attr = KVM_S390_VM_MEM_ENABLE_CMMA,
- };
-
- if (cap_hpage_1m) {
- warn_report("CMM will not be enabled because it is not "
- "compatible with huge memory backings.");
- return;
- }
- rc = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
- active_cmma = !rc;
- trace_kvm_enable_cmma(rc);
-}
-
-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);
- }
-}
-
-void kvm_s390_crypto_reset(void)
-{
- if (s390_has_feat(S390_FEAT_MSA_EXT_3)) {
- kvm_s390_init_aes_kw();
- kvm_s390_init_dea_kw();
- }
-}
-
-static int kvm_s390_configure_mempath_backing(KVMState *s)
-{
- size_t path_psize = qemu_mempath_getpagesize(mem_path);
-
- if (path_psize == 4 * KiB) {
- return 0;
- }
-
- if (!hpage_1m_allowed()) {
- error_report("This QEMU machine does not support huge page "
- "mappings");
- return -EINVAL;
- }
-
- if (path_psize != 1 * MiB) {
- error_report("Memory backing with 2G pages was specified, "
- "but KVM does not support this memory backing");
- return -EINVAL;
- }
-
- if (kvm_vm_enable_cap(s, KVM_CAP_S390_HPAGE_1M, 0)) {
- error_report("Memory backing with 1M pages was specified, "
- "but KVM does not support this memory backing");
- return -EINVAL;
- }
-
- cap_hpage_1m = 1;
- return 0;
-}
-
-int kvm_arch_init(MachineState *ms, KVMState *s)
-{
- MachineClass *mc = MACHINE_GET_CLASS(ms);
-
- if (mem_path && kvm_s390_configure_mempath_backing(s)) {
- return -EINVAL;
- }
-
- mc->default_cpu_type = S390_CPU_TYPE_NAME("host");
- 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_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);
- if (ri_allowed()) {
- if (kvm_vm_enable_cap(s, KVM_CAP_S390_RI, 0) == 0) {
- cap_ri = 1;
- }
- }
- if (cpu_model_allowed()) {
- if (kvm_vm_enable_cap(s, KVM_CAP_S390_GS, 0) == 0) {
- cap_gs = 1;
- }
- }
-
- /*
- * The migration interface for ais was introduced with kernel 4.13
- * but the capability itself had been active since 4.12. As migration
- * support is considered necessary let's disable ais in the 2.10
- * machine.
- */
- /* kvm_vm_enable_cap(s, KVM_CAP_S390_AIS, 0); */
-
- return 0;
-}
-
-int kvm_arch_irqchip_create(MachineState *ms, KVMState *s)
-{
- 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);
- cpu->irqstate = g_malloc0(VCPU_IRQ_BUF_SIZE);
- 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", 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, &regs);
- if (r < 0) {
- return r;
- }
- }
-
- 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 if (can_sync_regs(cs, KVM_SYNC_FPRS)) {
- for (i = 0; i < 16; i++) {
- cs->kvm_run->s.regs.fprs[i] = get_freg(env, i)->ll;
- }
- cs->kvm_run->s.regs.fpc = env->fpc;
- cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_FPRS;
- } 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;
- }
- }
-
- /* 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);
- }
-
- if (can_sync_regs(cs, KVM_SYNC_RICCB)) {
- memcpy(cs->kvm_run->s.regs.riccb, env->riccb, 64);
- cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_RICCB;
- }
-
- /* 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;
- }
- }
-
- if (can_sync_regs(cs, KVM_SYNC_GSCB)) {
- memcpy(cs->kvm_run->s.regs.gscb, env->gscb, 32);
- cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_GSCB;
- }
-
- if (can_sync_regs(cs, KVM_SYNC_BPBC)) {
- cs->kvm_run->s.regs.bpbc = env->bpbc;
- cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_BPBC;
- }
-
- if (can_sync_regs(cs, KVM_SYNC_ETOKEN)) {
- cs->kvm_run->s.regs.etoken = env->etoken;
- cs->kvm_run->s.regs.etoken_extension = env->etoken_extension;
- cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_ETOKEN;
- }
-
- /* 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, &regs);
- 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 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 if (can_sync_regs(cs, KVM_SYNC_FPRS)) {
- for (i = 0; i < 16; i++) {
- get_freg(env, i)->ll = cs->kvm_run->s.regs.fprs[i];
- }
- 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;
- }
-
- /* 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);
- }
-
- if (can_sync_regs(cs, KVM_SYNC_RICCB)) {
- memcpy(env->riccb, cs->kvm_run->s.regs.riccb, 64);
- }
-
- if (can_sync_regs(cs, KVM_SYNC_GSCB)) {
- memcpy(env->gscb, cs->kvm_run->s.regs.gscb, 32);
- }
-
- if (can_sync_regs(cs, KVM_SYNC_BPBC)) {
- env->bpbc = cs->kvm_run->s.regs.bpbc;
- }
-
- if (can_sync_regs(cs, KVM_SYNC_ETOKEN)) {
- env->etoken = cs->kvm_run->s.regs.etoken;
- env->etoken_extension = cs->kvm_run->s.regs.etoken_extension;
- }
-
- /* 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;
-}
-
-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_get_clock_ext(uint8_t *tod_high, uint64_t *tod_low)
-{
- int r;
- struct kvm_s390_vm_tod_clock gtod;
- struct kvm_device_attr attr = {
- .group = KVM_S390_VM_TOD,
- .attr = KVM_S390_VM_TOD_EXT,
- .addr = (uint64_t)&gtod,
- };
-
- r = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
- *tod_high = gtod.epoch_idx;
- *tod_low = gtod.tod;
-
- return r;
-}
-
-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);
-}
-
-int kvm_s390_set_clock_ext(uint8_t tod_high, uint64_t tod_low)
-{
- struct kvm_s390_vm_tod_clock gtod = {
- .epoch_idx = tod_high,
- .tod = tod_low,
- };
- struct kvm_device_attr attr = {
- .group = KVM_S390_VM_TOD,
- .attr = KVM_S390_VM_TOD_EXT,
- .addr = (uint64_t)&gtod,
- };
-
- 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 transferred
- * @is_write: true = write, false = read
- * Returns: 0 on success, non-zero if an exception or error occurred
- *
- * 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
- * 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, bool shared)
-{
- static void *mem;
-
- if (mem) {
- /* we only support one allocation, which is enough for initial ram */
- return NULL;
- }
-
- mem = mmap((void *) 0x800000000ULL, size,
- PROT_EXEC|PROT_READ|PROT_WRITE,
- MAP_SHARED | MAP_ANONYMOUS | MAP_FIXED, -1, 0);
- if (mem == MAP_FAILED) {
- mem = NULL;
- }
- if (mem && align) {
- *align = QEMU_VMALLOC_ALIGN;
- }
- return mem;
-}
-
-static uint8_t const *sw_bp_inst;
-static uint8_t sw_bp_ilen;
-
-static void determine_sw_breakpoint_instr(void)
-{
- /* DIAG 501 is used for sw breakpoints with old kernels */
- static const uint8_t diag_501[] = {0x83, 0x24, 0x05, 0x01};
- /* Instruction 0x0000 is used for sw breakpoints with recent kernels */
- static const uint8_t instr_0x0000[] = {0x00, 0x00};
-
- if (sw_bp_inst) {
- return;
- }
- if (kvm_vm_enable_cap(kvm_state, KVM_CAP_S390_USER_INSTR0, 0)) {
- sw_bp_inst = diag_501;
- sw_bp_ilen = sizeof(diag_501);
- DPRINTF("KVM: will use 4-byte sw breakpoints.\n");
- } else {
- sw_bp_inst = instr_0x0000;
- sw_bp_ilen = sizeof(instr_0x0000);
- DPRINTF("KVM: will use 2-byte sw breakpoints.\n");
- }
-}
-
-int kvm_arch_insert_sw_breakpoint(CPUState *cs, struct kvm_sw_breakpoint *bp)
-{
- determine_sw_breakpoint_instr();
-
- if (cpu_memory_rw_debug(cs, bp->pc, (uint8_t *)&bp->saved_insn,
- sw_bp_ilen, 0) ||
- cpu_memory_rw_debug(cs, bp->pc, (uint8_t *)sw_bp_inst, sw_bp_ilen, 1)) {
- return -EINVAL;
- }
- return 0;
-}
-
-int kvm_arch_remove_sw_breakpoint(CPUState *cs, struct kvm_sw_breakpoint *bp)
-{
- uint8_t t[MAX_ILEN];
-
- if (cpu_memory_rw_debug(cs, bp->pc, t, sw_bp_ilen, 0)) {
- return -EINVAL;
- } else if (memcmp(t, sw_bp_inst, sw_bp_ilen)) {
- return -EINVAL;
- } else if (cpu_memory_rw_debug(cs, bp->pc, (uint8_t *)&bp->saved_insn,
- sw_bp_ilen, 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)
-{
-}
-
-MemTxAttrs kvm_arch_post_run(CPUState *cs, struct kvm_run *run)
-{
- return MEMTXATTRS_UNSPECIFIED;
-}
-
-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;
-}
-
-static void inject_vcpu_irq_legacy(CPUState *cs, 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_vcpu_ioctl(cs, KVM_S390_INTERRUPT, &kvmint);
- if (r < 0) {
- fprintf(stderr, "KVM failed to inject interrupt\n");
- exit(1);
- }
-}
-
-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);
-}
-
-void kvm_s390_floating_interrupt_legacy(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_program_interrupt(S390CPU *cpu, uint16_t code)
-{
- struct kvm_s390_irq irq = {
- .type = KVM_S390_PROGRAM_INT,
- .u.pgm.code = code,
- };
- qemu_log_mask(CPU_LOG_INT, "program interrupt at %#" PRIx64 "\n",
- cpu->env.psw.addr);
- 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;
-
- sccb = env->regs[ipbh0 & 0xf];
- code = env->regs[(ipbh0 & 0xf0) >> 4];
-
- r = sclp_service_call(env, sccb, code);
- if (r < 0) {
- kvm_s390_program_interrupt(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;
-
- switch (ipa1) {
- case PRIV_B2_XSCH:
- ioinst_handle_xsch(cpu, env->regs[1], RA_IGNORED);
- break;
- case PRIV_B2_CSCH:
- ioinst_handle_csch(cpu, env->regs[1], RA_IGNORED);
- break;
- case PRIV_B2_HSCH:
- ioinst_handle_hsch(cpu, env->regs[1], RA_IGNORED);
- break;
- case PRIV_B2_MSCH:
- ioinst_handle_msch(cpu, env->regs[1], run->s390_sieic.ipb, RA_IGNORED);
- break;
- case PRIV_B2_SSCH:
- ioinst_handle_ssch(cpu, env->regs[1], run->s390_sieic.ipb, RA_IGNORED);
- break;
- case PRIV_B2_STCRW:
- ioinst_handle_stcrw(cpu, run->s390_sieic.ipb, RA_IGNORED);
- break;
- case PRIV_B2_STSCH:
- ioinst_handle_stsch(cpu, env->regs[1], run->s390_sieic.ipb, RA_IGNORED);
- 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, RA_IGNORED);
- 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, RA_IGNORED);
- break;
- case PRIV_B2_RSCH:
- ioinst_handle_rsch(cpu, env->regs[1], RA_IGNORED);
- break;
- case PRIV_B2_RCHP:
- ioinst_handle_rchp(cpu, env->regs[1], RA_IGNORED);
- 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], RA_IGNORED);
- 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,
- uint8_t *ar)
-{
- 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;
- }
- 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,
- uint8_t *ar)
-{
- 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;
- }
- if (ar) {
- *ar = base2;
- }
-
- 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;
-
- if (s390_has_feat(S390_FEAT_ZPCI)) {
- return clp_service_call(cpu, r2, RA_IGNORED);
- } else {
- return -1;
- }
-}
-
-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;
-
- if (s390_has_feat(S390_FEAT_ZPCI)) {
- return pcilg_service_call(cpu, r1, r2, RA_IGNORED);
- } else {
- return -1;
- }
-}
-
-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;
-
- if (s390_has_feat(S390_FEAT_ZPCI)) {
- return pcistg_service_call(cpu, r1, r2, RA_IGNORED);
- } else {
- return -1;
- }
-}
-
-static int kvm_stpcifc_service_call(S390CPU *cpu, struct kvm_run *run)
-{
- uint8_t r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
- uint64_t fiba;
- uint8_t ar;
-
- if (s390_has_feat(S390_FEAT_ZPCI)) {
- fiba = get_base_disp_rxy(cpu, run, &ar);
-
- return stpcifc_service_call(cpu, r1, fiba, ar, RA_IGNORED);
- } else {
- return -1;
- }
-}
-
-static int kvm_sic_service_call(S390CPU *cpu, struct kvm_run *run)
-{
- CPUS390XState *env = &cpu->env;
- uint8_t r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
- uint8_t r3 = run->s390_sieic.ipa & 0x000f;
- uint8_t isc;
- uint16_t mode;
- int r;
-
- mode = env->regs[r1] & 0xffff;
- isc = (env->regs[r3] >> 27) & 0x7;
- r = css_do_sic(env, isc, mode);
- if (r) {
- kvm_s390_program_interrupt(cpu, -r);
- }
-
- 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;
-
- if (s390_has_feat(S390_FEAT_ZPCI)) {
- return rpcit_service_call(cpu, r1, r2, RA_IGNORED);
- } else {
- return -1;
- }
-}
-
-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;
- uint8_t ar;
-
- if (s390_has_feat(S390_FEAT_ZPCI)) {
- gaddr = get_base_disp_rsy(cpu, run, &ar);
-
- return pcistb_service_call(cpu, r1, r3, gaddr, ar, RA_IGNORED);
- } else {
- return -1;
- }
-}
-
-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;
-
- if (s390_has_feat(S390_FEAT_ZPCI)) {
- fiba = get_base_disp_rxy(cpu, run, &ar);
-
- return mpcifc_service_call(cpu, r1, fiba, ar, RA_IGNORED);
- } else {
- return -1;
- }
-}
-
-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;
-
- switch (ipbl) {
- case PRIV_EB_PCISTB:
- r = kvm_pcistb_service_call(cpu, run);
- break;
- case PRIV_EB_SIC:
- r = kvm_sic_service_call(cpu, run);
- break;
- case PRIV_EB_SQBS:
- /* just inject exception */
- r = -1;
- break;
- default:
- r = -1;
- DPRINTF("KVM: unhandled PRIV: 0xeb%x\n", ipbl);
- break;
- }
-
- return r;
-}
-
-static int handle_e3(S390CPU *cpu, struct kvm_run *run, uint8_t ipbl)
-{
- int r = 0;
-
- switch (ipbl) {
- case PRIV_E3_MPCIFC:
- r = kvm_mpcifc_service_call(cpu, run);
- break;
- case PRIV_E3_STPCIFC:
- r = kvm_stpcifc_service_call(cpu, run);
- break;
- default:
- r = -1;
- DPRINTF("KVM: unhandled PRIV: 0xe3%x\n", ipbl);
- break;
- }
-
- return r;
-}
-
-static int handle_hypercall(S390CPU *cpu, struct kvm_run *run)
-{
- CPUS390XState *env = &cpu->env;
- int ret;
-
- ret = s390_virtio_hypercall(env);
- if (ret == -EINVAL) {
- kvm_s390_program_interrupt(cpu, PGM_SPECIFICATION);
- return 0;
- }
-
- return ret;
-}
-
-static void kvm_handle_diag_288(S390CPU *cpu, struct kvm_run *run)
-{
- uint64_t r1, r3;
- int rc;
-
- r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
- r3 = run->s390_sieic.ipa & 0x000f;
- rc = handle_diag_288(&cpu->env, r1, r3);
- if (rc) {
- kvm_s390_program_interrupt(cpu, PGM_SPECIFICATION);
- }
-}
-
-static void kvm_handle_diag_308(S390CPU *cpu, struct kvm_run *run)
-{
- uint64_t r1, r3;
-
- r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
- r3 = run->s390_sieic.ipa & 0x000f;
- handle_diag_308(&cpu->env, r1, r3, RA_IGNORED);
-}
-
-static int handle_sw_breakpoint(S390CPU *cpu, struct kvm_run *run)
-{
- CPUS390XState *env = &cpu->env;
- unsigned long pc;
-
- pc = env->psw.addr - sw_bp_ilen;
- if (kvm_find_sw_breakpoint(CPU(cpu), pc)) {
- env->psw.addr = pc;
- return EXCP_DEBUG;
- }
-
- 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, 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;
- case DIAG_KVM_HYPERCALL:
- r = handle_hypercall(cpu, run);
- break;
- case DIAG_KVM_BREAKPOINT:
- r = handle_sw_breakpoint(cpu, run);
- break;
- default:
- DPRINTF("KVM: unknown DIAG: 0x%x\n", func_code);
- kvm_s390_program_interrupt(cpu, PGM_SPECIFICATION);
- break;
- }
-
- return r;
-}
-
-static int kvm_s390_handle_sigp(S390CPU *cpu, uint8_t ipa1, uint32_t ipb)
-{
- CPUS390XState *env = &cpu->env;
- const uint8_t r1 = ipa1 >> 4;
- const uint8_t r3 = ipa1 & 0x0f;
- int ret;
- uint8_t order;
-
- /* get order code */
- order = decode_basedisp_rs(env, ipb, NULL) & SIGP_ORDER_MASK;
-
- ret = handle_sigp(env, order, r1, r3);
- setcc(cpu, ret);
- return 0;
-}
-
-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 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_eb(cpu, run, run->s390_sieic.ipb & 0xff);
- break;
- case IPA0_E3:
- r = handle_e3(cpu, run, run->s390_sieic.ipb & 0xff);
- break;
- case IPA0_DIAG:
- r = handle_diag(cpu, run, run->s390_sieic.ipb);
- break;
- case IPA0_SIGP:
- r = kvm_s390_handle_sigp(cpu, ipa1, run->s390_sieic.ipb);
- break;
- }
-
- if (r < 0) {
- r = 0;
- kvm_s390_program_interrupt(cpu, PGM_OPERATION);
- }
-
- return r;
-}
-
-static void unmanageable_intercept(S390CPU *cpu, S390CrashReason reason,
- int pswoffset)
-{
- CPUState *cs = CPU(cpu);
-
- s390_cpu_halt(cpu);
- cpu->env.crash_reason = reason;
- qemu_system_guest_panicked(cpu_get_crash_info(cs));
-}
-
-/* try to detect pgm check loops */
-static int handle_oper_loop(S390CPU *cpu, struct kvm_run *run)
-{
- CPUState *cs = CPU(cpu);
- PSW oldpsw, newpsw;
-
- newpsw.mask = ldq_phys(cs->as, cpu->env.psa +
- offsetof(LowCore, program_new_psw));
- newpsw.addr = ldq_phys(cs->as, cpu->env.psa +
- offsetof(LowCore, program_new_psw) + 8);
- oldpsw.mask = run->psw_mask;
- oldpsw.addr = run->psw_addr;
- /*
- * Avoid endless loops of operation exceptions, if the pgm new
- * PSW will cause a new operation exception.
- * The heuristic checks if the pgm new psw is within 6 bytes before
- * the faulting psw address (with same DAT, AS settings) and the
- * new psw is not a wait psw and the fault was not triggered by
- * problem state. In that case go into crashed state.
- */
-
- if (oldpsw.addr - newpsw.addr <= 6 &&
- !(newpsw.mask & PSW_MASK_WAIT) &&
- !(oldpsw.mask & PSW_MASK_PSTATE) &&
- (newpsw.mask & PSW_MASK_ASC) == (oldpsw.mask & PSW_MASK_ASC) &&
- (newpsw.mask & PSW_MASK_DAT) == (oldpsw.mask & PSW_MASK_DAT)) {
- unmanageable_intercept(cpu, S390_CRASH_REASON_OPINT_LOOP,
- offsetof(LowCore, program_new_psw));
- return EXCP_HALTED;
- }
- return 0;
-}
-
-static int handle_intercept(S390CPU *cpu)
-{
- CPUState *cs = CPU(cpu);
- struct kvm_run *run = cs->kvm_run;
- int icpt_code = run->s390_sieic.icptcode;
- int r = 0;
-
- DPRINTF("intercept: 0x%x (at 0x%lx)\n", icpt_code,
- (long)cs->kvm_run->psw_addr);
- switch (icpt_code) {
- case ICPT_INSTRUCTION:
- r = handle_instruction(cpu, run);
- break;
- case ICPT_PROGRAM:
- unmanageable_intercept(cpu, S390_CRASH_REASON_PGMINT_LOOP,
- offsetof(LowCore, program_new_psw));
- r = EXCP_HALTED;
- break;
- case ICPT_EXT_INT:
- unmanageable_intercept(cpu, S390_CRASH_REASON_EXTINT_LOOP,
- offsetof(LowCore, external_new_psw));
- r = EXCP_HALTED;
- break;
- case ICPT_WAITPSW:
- /* disabled wait, since enabled wait is handled in kernel */
- s390_handle_wait(cpu);
- r = EXCP_HALTED;
- break;
- case ICPT_CPU_STOP:
- do_stop_interrupt(&cpu->env);
- r = EXCP_HALTED;
- break;
- case ICPT_OPEREXC:
- /* check for break points */
- r = handle_sw_breakpoint(cpu, run);
- if (r == -ENOENT) {
- /* Then check for potential pgm check loops */
- r = handle_oper_loop(cpu, run);
- if (r == 0) {
- kvm_s390_program_interrupt(cpu, PGM_OPERATION);
- }
- }
- break;
- case ICPT_SOFT_INTERCEPT:
- fprintf(stderr, "KVM unimplemented icpt SOFT\n");
- exit(1);
- break;
- case ICPT_IO:
- fprintf(stderr, "KVM unimplemented icpt IO\n");
- exit(1);
- break;
- default:
- fprintf(stderr, "Unknown intercept code: %d\n", icpt_code);
- exit(1);
- break;
- }
-
- return r;
-}
-
-static int handle_tsch(S390CPU *cpu)
-{
- CPUState *cs = CPU(cpu);
- struct kvm_run *run = cs->kvm_run;
- int ret;
-
- ret = ioinst_handle_tsch(cpu, cpu->env.regs[1], run->s390_tsch.ipb,
- RA_IGNORED);
- if (ret < 0) {
- /*
- * Failure.
- * If an I/O interrupt had been dequeued, we have to reinject it.
- */
- if (run->s390_tsch.dequeued) {
- s390_io_interrupt(run->s390_tsch.subchannel_id,
- run->s390_tsch.subchannel_nr,
- run->s390_tsch.io_int_parm,
- run->s390_tsch.io_int_word);
- }
- ret = 0;
- }
- return ret;
-}
-
-static void insert_stsi_3_2_2(S390CPU *cpu, __u64 addr, uint8_t ar)
-{
- 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);
- 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);
- int ret = 0;
-
- qemu_mutex_lock_iothread();
-
- kvm_cpu_synchronize_state(cs);
-
- switch (run->exit_reason) {
- case KVM_EXIT_S390_SIEIC:
- ret = handle_intercept(cpu);
- break;
- case KVM_EXIT_S390_RESET:
- s390_ipl_reset_request(cs, S390_RESET_REIPL);
- 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;
- default:
- fprintf(stderr, "Unknown KVM exit: %d\n", run->exit_reason);
- break;
- }
- qemu_mutex_unlock_iothread();
-
- if (ret == 0) {
- ret = EXCP_INTERRUPT;
- }
- return ret;
-}
-
-bool kvm_arch_stop_on_emulation_error(CPUState *cpu)
-{
- return true;
-}
-
-void kvm_s390_enable_css_support(S390CPU *cpu)
-{
- int r;
-
- /* Activate host kernel channel subsystem support. */
- 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_gsi_routing_allowed = true;
- kvm_halt_in_kernel_allowed = false;
- }
-}
-
-int kvm_s390_assign_subch_ioeventfd(EventNotifier *notifier, uint32_t sch,
- int vq, bool assign)
-{
- struct kvm_ioeventfd kick = {
- .flags = KVM_IOEVENTFD_FLAG_VIRTIO_CCW_NOTIFY |
- KVM_IOEVENTFD_FLAG_DATAMATCH,
- .fd = event_notifier_get_fd(notifier),
- .datamatch = vq,
- .addr = sch,
- .len = 8,
- };
- if (!kvm_check_extension(kvm_state, KVM_CAP_IOEVENTFD)) {
- return -ENOSYS;
- }
- if (!assign) {
- kick.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN;
- }
- return kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &kick);
-}
-
-int kvm_s390_get_ri(void)
-{
- return cap_ri;
-}
-
-int kvm_s390_get_gs(void)
-{
- return cap_gs;
-}
-
-int kvm_s390_set_cpu_state(S390CPU *cpu, uint8_t cpu_state)
-{
- struct kvm_mp_state mp_state = {};
- int ret;
-
- /* the kvm part might not have been initialized yet */
- if (CPU(cpu)->kvm_state == NULL) {
- return 0;
- }
-
- switch (cpu_state) {
- case S390_CPU_STATE_STOPPED:
- mp_state.mp_state = KVM_MP_STATE_STOPPED;
- break;
- case S390_CPU_STATE_CHECK_STOP:
- mp_state.mp_state = KVM_MP_STATE_CHECK_STOP;
- break;
- case S390_CPU_STATE_OPERATING:
- mp_state.mp_state = KVM_MP_STATE_OPERATING;
- break;
- case S390_CPU_STATE_LOAD:
- mp_state.mp_state = KVM_MP_STATE_LOAD;
- break;
- default:
- error_report("Requested CPU state is not a valid S390 CPU state: %u",
- cpu_state);
- exit(1);
- }
-
- ret = kvm_vcpu_ioctl(CPU(cpu), KVM_SET_MP_STATE, &mp_state);
- if (ret) {
- trace_kvm_failed_cpu_state_set(CPU(cpu)->cpu_index, cpu_state,
- strerror(-ret));
- }
-
- return ret;
-}
-
-void kvm_s390_vcpu_interrupt_pre_save(S390CPU *cpu)
-{
- struct kvm_s390_irq_state irq_state = {
- .buf = (uint64_t) cpu->irqstate,
- .len = VCPU_IRQ_BUF_SIZE,
- };
- CPUState *cs = CPU(cpu);
- int32_t bytes;
-
- if (!kvm_check_extension(kvm_state, KVM_CAP_S390_IRQ_STATE)) {
- return;
- }
-
- 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 = {
- .buf = (uint64_t) cpu->irqstate,
- .len = cpu->irqstate_saved_size,
- };
- int r;
-
- if (cpu->irqstate_saved_size == 0) {
- return 0;
- }
-
- if (!kvm_check_extension(kvm_state, KVM_CAP_S390_IRQ_STATE)) {
- return -ENOSYS;
- }
-
- 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, PCIDevice *dev)
-{
- S390PCIBusDevice *pbdev;
- uint32_t vec = data & ZPCI_MSI_VEC_MASK;
-
- if (!dev) {
- DPRINTF("add_msi_route no pci device\n");
- return -ENODEV;
- }
-
- pbdev = s390_pci_find_dev_by_target(s390_get_phb(), DEVICE(dev)->id);
- if (!pbdev) {
- DPRINTF("add_msi_route no zpci device\n");
- return -ENODEV;
- }
-
- route->type = KVM_IRQ_ROUTING_S390_ADAPTER;
- route->flags = 0;
- route->u.adapter.summary_addr = pbdev->routes.adapter.summary_addr;
- route->u.adapter.ind_addr = pbdev->routes.adapter.ind_addr;
- route->u.adapter.summary_offset = pbdev->routes.adapter.summary_offset;
- route->u.adapter.ind_offset = pbdev->routes.adapter.ind_offset + vec;
- route->u.adapter.adapter_id = pbdev->routes.adapter.adapter_id;
- return 0;
-}
-
-int kvm_arch_add_msi_route_post(struct kvm_irq_routing_entry *route,
- int vector, PCIDevice *dev)
-{
- return 0;
-}
-
-int kvm_arch_release_virq_post(int virq)
-{
- return 0;
-}
-
-int kvm_arch_msi_data_to_gsi(uint32_t data)
-{
- abort();
-}
-
-static int query_cpu_subfunc(S390FeatBitmap features)
-{
- struct kvm_s390_vm_cpu_subfunc prop;
- struct kvm_device_attr attr = {
- .group = KVM_S390_VM_CPU_MODEL,
- .attr = KVM_S390_VM_CPU_MACHINE_SUBFUNC,
- .addr = (uint64_t) &prop,
- };
- int rc;
-
- rc = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
- if (rc) {
- return rc;
- }
-
- /*
- * We're going to add all subfunctions now, if the corresponding feature
- * is available that unlocks the query functions.
- */
- s390_add_from_feat_block(features, S390_FEAT_TYPE_PLO, prop.plo);
- if (test_bit(S390_FEAT_TOD_CLOCK_STEERING, features)) {
- s390_add_from_feat_block(features, S390_FEAT_TYPE_PTFF, prop.ptff);
- }
- if (test_bit(S390_FEAT_MSA, features)) {
- s390_add_from_feat_block(features, S390_FEAT_TYPE_KMAC, prop.kmac);
- s390_add_from_feat_block(features, S390_FEAT_TYPE_KMC, prop.kmc);
- s390_add_from_feat_block(features, S390_FEAT_TYPE_KM, prop.km);
- s390_add_from_feat_block(features, S390_FEAT_TYPE_KIMD, prop.kimd);
- s390_add_from_feat_block(features, S390_FEAT_TYPE_KLMD, prop.klmd);
- }
- if (test_bit(S390_FEAT_MSA_EXT_3, features)) {
- s390_add_from_feat_block(features, S390_FEAT_TYPE_PCKMO, prop.pckmo);
- }
- if (test_bit(S390_FEAT_MSA_EXT_4, features)) {
- s390_add_from_feat_block(features, S390_FEAT_TYPE_KMCTR, prop.kmctr);
- s390_add_from_feat_block(features, S390_FEAT_TYPE_KMF, prop.kmf);
- s390_add_from_feat_block(features, S390_FEAT_TYPE_KMO, prop.kmo);
- s390_add_from_feat_block(features, S390_FEAT_TYPE_PCC, prop.pcc);
- }
- if (test_bit(S390_FEAT_MSA_EXT_5, features)) {
- s390_add_from_feat_block(features, S390_FEAT_TYPE_PPNO, prop.ppno);
- }
- if (test_bit(S390_FEAT_MSA_EXT_8, features)) {
- s390_add_from_feat_block(features, S390_FEAT_TYPE_KMA, prop.kma);
- }
- return 0;
-}
-
-static int configure_cpu_subfunc(const S390FeatBitmap features)
-{
- struct kvm_s390_vm_cpu_subfunc prop = {};
- struct kvm_device_attr attr = {
- .group = KVM_S390_VM_CPU_MODEL,
- .attr = KVM_S390_VM_CPU_PROCESSOR_SUBFUNC,
- .addr = (uint64_t) &prop,
- };
-
- if (!kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
- KVM_S390_VM_CPU_PROCESSOR_SUBFUNC)) {
- /* hardware support might be missing, IBC will handle most of this */
- return 0;
- }
-
- s390_fill_feat_block(features, S390_FEAT_TYPE_PLO, prop.plo);
- if (test_bit(S390_FEAT_TOD_CLOCK_STEERING, features)) {
- s390_fill_feat_block(features, S390_FEAT_TYPE_PTFF, prop.ptff);
- }
- if (test_bit(S390_FEAT_MSA, features)) {
- s390_fill_feat_block(features, S390_FEAT_TYPE_KMAC, prop.kmac);
- s390_fill_feat_block(features, S390_FEAT_TYPE_KMC, prop.kmc);
- s390_fill_feat_block(features, S390_FEAT_TYPE_KM, prop.km);
- s390_fill_feat_block(features, S390_FEAT_TYPE_KIMD, prop.kimd);
- s390_fill_feat_block(features, S390_FEAT_TYPE_KLMD, prop.klmd);
- }
- if (test_bit(S390_FEAT_MSA_EXT_3, features)) {
- s390_fill_feat_block(features, S390_FEAT_TYPE_PCKMO, prop.pckmo);
- }
- if (test_bit(S390_FEAT_MSA_EXT_4, features)) {
- s390_fill_feat_block(features, S390_FEAT_TYPE_KMCTR, prop.kmctr);
- s390_fill_feat_block(features, S390_FEAT_TYPE_KMF, prop.kmf);
- s390_fill_feat_block(features, S390_FEAT_TYPE_KMO, prop.kmo);
- s390_fill_feat_block(features, S390_FEAT_TYPE_PCC, prop.pcc);
- }
- if (test_bit(S390_FEAT_MSA_EXT_5, features)) {
- s390_fill_feat_block(features, S390_FEAT_TYPE_PPNO, prop.ppno);
- }
- if (test_bit(S390_FEAT_MSA_EXT_8, features)) {
- s390_fill_feat_block(features, S390_FEAT_TYPE_KMA, prop.kma);
- }
- return kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
-}
-
-static int kvm_to_feat[][2] = {
- { KVM_S390_VM_CPU_FEAT_ESOP, S390_FEAT_ESOP },
- { KVM_S390_VM_CPU_FEAT_SIEF2, S390_FEAT_SIE_F2 },
- { KVM_S390_VM_CPU_FEAT_64BSCAO , S390_FEAT_SIE_64BSCAO },
- { KVM_S390_VM_CPU_FEAT_SIIF, S390_FEAT_SIE_SIIF },
- { KVM_S390_VM_CPU_FEAT_GPERE, S390_FEAT_SIE_GPERE },
- { KVM_S390_VM_CPU_FEAT_GSLS, S390_FEAT_SIE_GSLS },
- { KVM_S390_VM_CPU_FEAT_IB, S390_FEAT_SIE_IB },
- { KVM_S390_VM_CPU_FEAT_CEI, S390_FEAT_SIE_CEI },
- { KVM_S390_VM_CPU_FEAT_IBS, S390_FEAT_SIE_IBS },
- { KVM_S390_VM_CPU_FEAT_SKEY, S390_FEAT_SIE_SKEY },
- { KVM_S390_VM_CPU_FEAT_CMMA, S390_FEAT_SIE_CMMA },
- { KVM_S390_VM_CPU_FEAT_PFMFI, S390_FEAT_SIE_PFMFI},
- { KVM_S390_VM_CPU_FEAT_SIGPIF, S390_FEAT_SIE_SIGPIF},
- { KVM_S390_VM_CPU_FEAT_KSS, S390_FEAT_SIE_KSS},
-};
-
-static int query_cpu_feat(S390FeatBitmap features)
-{
- struct kvm_s390_vm_cpu_feat prop;
- struct kvm_device_attr attr = {
- .group = KVM_S390_VM_CPU_MODEL,
- .attr = KVM_S390_VM_CPU_MACHINE_FEAT,
- .addr = (uint64_t) &prop,
- };
- int rc;
- int i;
-
- rc = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
- if (rc) {
- return rc;
- }
-
- for (i = 0; i < ARRAY_SIZE(kvm_to_feat); i++) {
- if (test_be_bit(kvm_to_feat[i][0], (uint8_t *) prop.feat)) {
- set_bit(kvm_to_feat[i][1], features);
- }
- }
- return 0;
-}
-
-static int configure_cpu_feat(const S390FeatBitmap features)
-{
- struct kvm_s390_vm_cpu_feat prop = {};
- struct kvm_device_attr attr = {
- .group = KVM_S390_VM_CPU_MODEL,
- .attr = KVM_S390_VM_CPU_PROCESSOR_FEAT,
- .addr = (uint64_t) &prop,
- };
- int i;
-
- for (i = 0; i < ARRAY_SIZE(kvm_to_feat); i++) {
- if (test_bit(kvm_to_feat[i][1], features)) {
- set_be_bit(kvm_to_feat[i][0], (uint8_t *) prop.feat);
- }
- }
- return kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
-}
-
-bool kvm_s390_cpu_models_supported(void)
-{
- if (!cpu_model_allowed()) {
- /* compatibility machines interfere with the cpu model */
- return false;
- }
- return kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
- KVM_S390_VM_CPU_MACHINE) &&
- kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
- KVM_S390_VM_CPU_PROCESSOR) &&
- kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
- KVM_S390_VM_CPU_MACHINE_FEAT) &&
- kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
- KVM_S390_VM_CPU_PROCESSOR_FEAT) &&
- kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL,
- KVM_S390_VM_CPU_MACHINE_SUBFUNC);
-}
-
-void kvm_s390_get_host_cpu_model(S390CPUModel *model, Error **errp)
-{
- struct kvm_s390_vm_cpu_machine prop = {};
- struct kvm_device_attr attr = {
- .group = KVM_S390_VM_CPU_MODEL,
- .attr = KVM_S390_VM_CPU_MACHINE,
- .addr = (uint64_t) &prop,
- };
- uint16_t unblocked_ibc = 0, cpu_type = 0;
- int rc;
-
- memset(model, 0, sizeof(*model));
-
- if (!kvm_s390_cpu_models_supported()) {
- error_setg(errp, "KVM doesn't support CPU models");
- return;
- }
-
- /* query the basic cpu model properties */
- rc = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
- if (rc) {
- error_setg(errp, "KVM: Error querying host CPU model: %d", rc);
- return;
- }
-
- cpu_type = cpuid_type(prop.cpuid);
- if (has_ibc(prop.ibc)) {
- model->lowest_ibc = lowest_ibc(prop.ibc);
- unblocked_ibc = unblocked_ibc(prop.ibc);
- }
- model->cpu_id = cpuid_id(prop.cpuid);
- model->cpu_id_format = cpuid_format(prop.cpuid);
- model->cpu_ver = 0xff;
-
- /* get supported cpu features indicated via STFL(E) */
- s390_add_from_feat_block(model->features, S390_FEAT_TYPE_STFL,
- (uint8_t *) prop.fac_mask);
- /* dat-enhancement facility 2 has no bit but was introduced with stfle */
- if (test_bit(S390_FEAT_STFLE, model->features)) {
- set_bit(S390_FEAT_DAT_ENH_2, model->features);
- }
- /* get supported cpu features indicated e.g. via SCLP */
- rc = query_cpu_feat(model->features);
- if (rc) {
- error_setg(errp, "KVM: Error querying CPU features: %d", rc);
- return;
- }
- /* get supported cpu subfunctions indicated via query / test bit */
- rc = query_cpu_subfunc(model->features);
- if (rc) {
- error_setg(errp, "KVM: Error querying CPU subfunctions: %d", rc);
- return;
- }
-
- /* PTFF subfunctions might be indicated although kernel support missing */
- if (!test_bit(S390_FEAT_MULTIPLE_EPOCH, model->features)) {
- clear_bit(S390_FEAT_PTFF_QSIE, model->features);
- clear_bit(S390_FEAT_PTFF_QTOUE, model->features);
- clear_bit(S390_FEAT_PTFF_STOE, model->features);
- clear_bit(S390_FEAT_PTFF_STOUE, model->features);
- }
-
- /* with cpu model support, CMM is only indicated if really available */
- if (kvm_s390_cmma_available()) {
- set_bit(S390_FEAT_CMM, model->features);
- } else {
- /* no cmm -> no cmm nt */
- clear_bit(S390_FEAT_CMM_NT, model->features);
- }
-
- /* bpb needs kernel support for migration, VSIE and reset */
- if (!kvm_check_extension(kvm_state, KVM_CAP_S390_BPB)) {
- clear_bit(S390_FEAT_BPB, model->features);
- }
-
- /* We emulate a zPCI bus and AEN, therefore we don't need HW support */
- if (pci_available) {
- set_bit(S390_FEAT_ZPCI, model->features);
- }
- set_bit(S390_FEAT_ADAPTER_EVENT_NOTIFICATION, model->features);
-
- if (s390_known_cpu_type(cpu_type)) {
- /* we want the exact model, even if some features are missing */
- model->def = s390_find_cpu_def(cpu_type, ibc_gen(unblocked_ibc),
- ibc_ec_ga(unblocked_ibc), NULL);
- } else {
- /* model unknown, e.g. too new - search using features */
- model->def = s390_find_cpu_def(0, ibc_gen(unblocked_ibc),
- ibc_ec_ga(unblocked_ibc),
- model->features);
- }
- if (!model->def) {
- error_setg(errp, "KVM: host CPU model could not be identified");
- return;
- }
- /* for now, we can only provide the AP feature with HW support */
- if (kvm_vm_check_attr(kvm_state, KVM_S390_VM_CRYPTO,
- KVM_S390_VM_CRYPTO_ENABLE_APIE)) {
- set_bit(S390_FEAT_AP, model->features);
- }
- /* strip of features that are not part of the maximum model */
- bitmap_and(model->features, model->features, model->def->full_feat,
- S390_FEAT_MAX);
-}
-
-static void kvm_s390_configure_apie(bool interpret)
-{
- uint64_t attr = interpret ? KVM_S390_VM_CRYPTO_ENABLE_APIE :
- KVM_S390_VM_CRYPTO_DISABLE_APIE;
-
- if (kvm_vm_check_attr(kvm_state, KVM_S390_VM_CRYPTO, attr)) {
- kvm_s390_set_attr(attr);
- }
-}
-
-void kvm_s390_apply_cpu_model(const S390CPUModel *model, Error **errp)
-{
- struct kvm_s390_vm_cpu_processor prop = {
- .fac_list = { 0 },
- };
- struct kvm_device_attr attr = {
- .group = KVM_S390_VM_CPU_MODEL,
- .attr = KVM_S390_VM_CPU_PROCESSOR,
- .addr = (uint64_t) &prop,
- };
- int rc;
-
- if (!model) {
- /* compatibility handling if cpu models are disabled */
- if (kvm_s390_cmma_available()) {
- kvm_s390_enable_cmma();
- }
- return;
- }
- if (!kvm_s390_cpu_models_supported()) {
- error_setg(errp, "KVM doesn't support CPU models");
- return;
- }
- prop.cpuid = s390_cpuid_from_cpu_model(model);
- prop.ibc = s390_ibc_from_cpu_model(model);
- /* configure cpu features indicated via STFL(e) */
- s390_fill_feat_block(model->features, S390_FEAT_TYPE_STFL,
- (uint8_t *) prop.fac_list);
- rc = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
- if (rc) {
- error_setg(errp, "KVM: Error configuring the CPU model: %d", rc);
- return;
- }
- /* configure cpu features indicated e.g. via SCLP */
- rc = configure_cpu_feat(model->features);
- if (rc) {
- error_setg(errp, "KVM: Error configuring CPU features: %d", rc);
- return;
- }
- /* configure cpu subfunctions indicated via query / test bit */
- rc = configure_cpu_subfunc(model->features);
- if (rc) {
- error_setg(errp, "KVM: Error configuring CPU subfunctions: %d", rc);
- return;
- }
- /* enable CMM via CMMA */
- if (test_bit(S390_FEAT_CMM, model->features)) {
- kvm_s390_enable_cmma();
- }
-
- if (test_bit(S390_FEAT_AP, model->features)) {
- kvm_s390_configure_apie(true);
- }
-}
-
-void kvm_s390_restart_interrupt(S390CPU *cpu)
-{
- struct kvm_s390_irq irq = {
- .type = KVM_S390_RESTART,
- };
-
- kvm_s390_vcpu_interrupt(cpu, &irq);
-}
-
-void kvm_s390_stop_interrupt(S390CPU *cpu)
-{
- struct kvm_s390_irq irq = {
- .type = KVM_S390_SIGP_STOP,
- };
-
- kvm_s390_vcpu_interrupt(cpu, &irq);
-}