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s390x/kvm/migration: fixes, enhancements and cleanups

Browse source 
- new email address for Cornelia
 - Fixes: 3270, flic, virtio-scsi-ccw, ipl
 - Enhancements, cpumodel, migration
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Merge remote-tracking branch 'remotes/borntraeger/tags/s390x-20170706' into staging

s390x/kvm/migration: fixes, enhancements and cleanups

- new email address for Cornelia
- Fixes: 3270, flic, virtio-scsi-ccw, ipl
- Enhancements, cpumodel, migration

# gpg: Signature made Thu 06 Jul 2017 08:18:19 BST
# gpg:                using RSA key 0x117BBC80B5A61C7C
# gpg: Good signature from "Christian Borntraeger (IBM) <borntraeger@de.ibm.com>"
# Primary key fingerprint: F922 9381 A334 08F9 DBAB  FBCA 117B BC80 B5A6 1C7C

* remotes/borntraeger/tags/s390x-20170706:
  hw/s390x/ipl: Fix endianness problem with netboot_start_addr
  virtio-scsi-ccw: use ioeventfd even when KVM is disabled
  s390x: return unavailable features via query-cpu-definitions
  s390x/MAINTAINERS: Update my email address
  s390x: fix realize inheritance for kvm-flic
  s390x: fix error propagation in kvm-flic's realize
  s390x/3270: fix instruction interception handler
  s390x: vmstatify config migration for virtio-ccw

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2017-07-06 11:42:59 +01:00
parent 67b9c5d4f3 1045e3cdaf
commit b113658675
13 changed files with 456 additions and 253 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
MAINTAINERS
View file

@ -299,7 +299,7 @@ F: target/ppc/kvm.c
S390
M: Christian Borntraeger <borntraeger@de.ibm.com>
M: Cornelia Huck <cornelia.huck@de.ibm.com>
M: Cornelia Huck <cohuck@redhat.com>
M: Alexander Graf <agraf@suse.de>
S: Maintained
F: target/s390x/kvm.c
@ -778,7 +778,7 @@ F: include/hw/sparc/grlib.h
S390 Machines
-------------
S390 Virtio-ccw
M: Cornelia Huck <cornelia.huck@de.ibm.com>
M: Cornelia Huck <cohuck@redhat.com>
M: Christian Borntraeger <borntraeger@de.ibm.com>
M: Alexander Graf <agraf@suse.de>
S: Supported
@ -1006,7 +1006,7 @@ F: hw/vfio/*
F: include/hw/vfio/
vfio-ccw
M: Cornelia Huck <cornelia.huck@de.ibm.com>
M: Cornelia Huck <cohuck@redhat.com>
S: Supported
F: hw/vfio/ccw.c
F: hw/s390x/s390-ccw.c
@ -1048,7 +1048,7 @@ F: tests/virtio-blk-test.c
T: git git://github.com/stefanha/qemu.git block
virtio-ccw
M: Cornelia Huck <cornelia.huck@de.ibm.com>
M: Cornelia Huck <cohuck@redhat.com>
M: Christian Borntraeger <borntraeger@de.ibm.com>
S: Supported
F: hw/s390x/virtio-ccw.[hc]

32
hw/intc/s390_flic.c
View file

@ -17,6 +17,7 @@
#include "trace.h"
#include "hw/qdev.h"
#include "qapi/error.h"
#include "hw/s390x/s390-virtio-ccw.h"
S390FLICState *s390_get_flic(void)
{
@ -100,8 +101,8 @@ static void s390_flic_common_realize(DeviceState *dev, Error **errp)
uint32_t max_batch = S390_FLIC_COMMON(dev)->adapter_routes_max_batch;
if (max_batch > ADAPTER_ROUTES_MAX_GSI) {
error_setg(errp, "flic adapter_routes_max_batch too big"
"%d (%d allowed)", max_batch, ADAPTER_ROUTES_MAX_GSI);
error_setg(errp, "flic property adapter_routes_max_batch too big"
" (%d > %d)", max_batch, ADAPTER_ROUTES_MAX_GSI);
}
}
@ -136,3 +137,30 @@ static void qemu_s390_flic_register_types(void)
}
type_init(qemu_s390_flic_register_types)
const VMStateDescription vmstate_adapter_info = {
.name = "s390_adapter_info",
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_UINT64(ind_offset, AdapterInfo),
/*
* We do not have to migrate neither the id nor the addresses.
* The id is set by css_register_io_adapter and the addresses
* are set based on the IndAddr objects after those get mapped.
*/
VMSTATE_END_OF_LIST()
},
};
const VMStateDescription vmstate_adapter_routes = {
.name = "s390_adapter_routes",
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_STRUCT(adapter, AdapterRoutes, 1, vmstate_adapter_info,
AdapterInfo),
VMSTATE_END_OF_LIST()
}
};

29
hw/intc/s390_flic_kvm.c
View file

@ -15,6 +15,7 @@
#include "cpu.h"
#include <sys/ioctl.h>
#include "qemu/error-report.h"
#include "qapi/error.h"
#include "hw/sysbus.h"
#include "sysemu/kvm.h"
#include "hw/s390x/s390_flic.h"
@ -391,24 +392,43 @@ static const VMStateDescription kvm_s390_flic_vmstate = {
}
};
typedef struct KVMS390FLICStateClass {
S390FLICStateClass parent_class;
DeviceRealize parent_realize;
} KVMS390FLICStateClass;
#define KVM_S390_FLIC_GET_CLASS(obj) \
OBJECT_GET_CLASS(KVMS390FLICStateClass, (obj), TYPE_KVM_S390_FLIC)
#define KVM_S390_FLIC_CLASS(klass) \
OBJECT_CLASS_CHECK(KVMS390FLICStateClass, (klass), TYPE_KVM_S390_FLIC)
static void kvm_s390_flic_realize(DeviceState *dev, Error **errp)
{
KVMS390FLICState *flic_state = KVM_S390_FLIC(dev);
struct kvm_create_device cd = {0};
struct kvm_device_attr test_attr = {0};
int ret;
Error *errp_local = NULL;
KVM_S390_FLIC_GET_CLASS(dev)->parent_realize(dev, &errp_local);
if (errp_local) {
goto fail;
}
flic_state->fd = -1;
if (!kvm_check_extension(kvm_state, KVM_CAP_DEVICE_CTRL)) {
error_setg_errno(&errp_local, errno, "KVM is missing capability"
" KVM_CAP_DEVICE_CTRL");
trace_flic_no_device_api(errno);
return;
goto fail;
}
cd.type = KVM_DEV_TYPE_FLIC;
ret = kvm_vm_ioctl(kvm_state, KVM_CREATE_DEVICE, &cd);
if (ret < 0) {
error_setg_errno(&errp_local, errno, "Creating the KVM device failed");
trace_flic_create_device(errno);
return;
goto fail;
}
flic_state->fd = cd.fd;
@ -417,6 +437,9 @@ static void kvm_s390_flic_realize(DeviceState *dev, Error **errp)
flic_state->clear_io_supported = !ioctl(flic_state->fd,
KVM_HAS_DEVICE_ATTR, test_attr);
return;
fail:
error_propagate(errp, errp_local);
}
static void kvm_s390_flic_reset(DeviceState *dev)
@ -446,6 +469,7 @@ static void kvm_s390_flic_class_init(ObjectClass *oc, void *data)
DeviceClass *dc = DEVICE_CLASS(oc);
S390FLICStateClass *fsc = S390_FLIC_COMMON_CLASS(oc);
KVM_S390_FLIC_CLASS(oc)->parent_realize = dc->realize;
dc->realize = kvm_s390_flic_realize;
dc->vmsd = &kvm_s390_flic_vmstate;
dc->reset = kvm_s390_flic_reset;
@ -460,6 +484,7 @@ static const TypeInfo kvm_s390_flic_info = {
.name = TYPE_KVM_S390_FLIC,
.parent = TYPE_S390_FLIC_COMMON,
.instance_size = sizeof(KVMS390FLICState),
.class_size = sizeof(KVMS390FLICStateClass),
.class_init = kvm_s390_flic_class_init,
};

1
hw/s390x/3270-ccw.c
View file

@ -126,6 +126,7 @@ static void emulated_ccw_3270_realize(DeviceState *ds, Error **errp)
sch->id.cu_type = EMULATED_CCW_3270_CU_TYPE;
css_sch_build_virtual_schib(sch, (uint8_t)chpid,
EMULATED_CCW_3270_CHPID_TYPE);
sch->do_subchannel_work = do_subchannel_work_virtual;
sch->ccw_cb = emulated_ccw_3270_cb;
ck->init(dev, &err);

10
hw/s390x/ccw-device.c
View file

@ -50,6 +50,16 @@ static void ccw_device_class_init(ObjectClass *klass, void *data)
dc->props = ccw_device_properties;
}
const VMStateDescription vmstate_ccw_dev = {
.name = "s390_ccw_dev",
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_STRUCT_POINTER(sch, CcwDevice, vmstate_subch_dev, SubchDev),
VMSTATE_END_OF_LIST()
}
};
static const TypeInfo ccw_device_info = {
.name = TYPE_CCW_DEVICE,
.parent = TYPE_DEVICE,

4
hw/s390x/ccw-device.h
View file

@ -27,6 +27,10 @@ typedef struct CcwDevice {
CssDevId subch_id;
} CcwDevice;
extern const VMStateDescription vmstate_ccw_dev;
#define VMSTATE_CCW_DEVICE(_field, _state) \
VMSTATE_STRUCT(_field, _state, 1, vmstate_ccw_dev, CcwDevice)
typedef struct CCWDeviceClass {
DeviceClass parent_class;
void (*unplug)(HotplugHandler *, DeviceState *, Error **);

378
hw/s390x/css.c
View file

@ -22,6 +22,7 @@
#include "hw/s390x/css.h"
#include "trace.h"
#include "hw/s390x/s390_flic.h"
#include "hw/s390x/s390-virtio-ccw.h"
typedef struct CrwContainer {
CRW crw;
@ -40,6 +41,181 @@ typedef struct SubchSet {
unsigned long devnos_used[BITS_TO_LONGS(MAX_SCHID + 1)];
} SubchSet;
static const VMStateDescription vmstate_scsw = {
.name = "s390_scsw",
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_UINT16(flags, SCSW),
VMSTATE_UINT16(ctrl, SCSW),
VMSTATE_UINT32(cpa, SCSW),
VMSTATE_UINT8(dstat, SCSW),
VMSTATE_UINT8(cstat, SCSW),
VMSTATE_UINT16(count, SCSW),
VMSTATE_END_OF_LIST()
}
};
static const VMStateDescription vmstate_pmcw = {
.name = "s390_pmcw",
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_UINT32(intparm, PMCW),
VMSTATE_UINT16(flags, PMCW),
VMSTATE_UINT16(devno, PMCW),
VMSTATE_UINT8(lpm, PMCW),
VMSTATE_UINT8(pnom, PMCW),
VMSTATE_UINT8(lpum, PMCW),
VMSTATE_UINT8(pim, PMCW),
VMSTATE_UINT16(mbi, PMCW),
VMSTATE_UINT8(pom, PMCW),
VMSTATE_UINT8(pam, PMCW),
VMSTATE_UINT8_ARRAY(chpid, PMCW, 8),
VMSTATE_UINT32(chars, PMCW),
VMSTATE_END_OF_LIST()
}
};
static const VMStateDescription vmstate_schib = {
.name = "s390_schib",
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_STRUCT(pmcw, SCHIB, 0, vmstate_pmcw, PMCW),
VMSTATE_STRUCT(scsw, SCHIB, 0, vmstate_scsw, SCSW),
VMSTATE_UINT64(mba, SCHIB),
VMSTATE_UINT8_ARRAY(mda, SCHIB, 4),
VMSTATE_END_OF_LIST()
}
};
static const VMStateDescription vmstate_ccw1 = {
.name = "s390_ccw1",
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_UINT8(cmd_code, CCW1),
VMSTATE_UINT8(flags, CCW1),
VMSTATE_UINT16(count, CCW1),
VMSTATE_UINT32(cda, CCW1),
VMSTATE_END_OF_LIST()
}
};
static const VMStateDescription vmstate_ciw = {
.name = "s390_ciw",
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_UINT8(type, CIW),
VMSTATE_UINT8(command, CIW),
VMSTATE_UINT16(count, CIW),
VMSTATE_END_OF_LIST()
}
};
static const VMStateDescription vmstate_sense_id = {
.name = "s390_sense_id",
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_UINT8(reserved, SenseId),
VMSTATE_UINT16(cu_type, SenseId),
VMSTATE_UINT8(cu_model, SenseId),
VMSTATE_UINT16(dev_type, SenseId),
VMSTATE_UINT8(dev_model, SenseId),
VMSTATE_UINT8(unused, SenseId),
VMSTATE_STRUCT_ARRAY(ciw, SenseId, MAX_CIWS, 0, vmstate_ciw, CIW),
VMSTATE_END_OF_LIST()
}
};
static int subch_dev_post_load(void *opaque, int version_id);
static void subch_dev_pre_save(void *opaque);
const char err_hint_devno[] = "Devno mismatch, tried to load wrong section!"
" Likely reason: some sequences of plug and unplug can break"
" migration for machine versions prior to 2.7 (known design flaw).";
const VMStateDescription vmstate_subch_dev = {
.name = "s390_subch_dev",
.version_id = 1,
.minimum_version_id = 1,
.post_load = subch_dev_post_load,
.pre_save = subch_dev_pre_save,
.fields = (VMStateField[]) {
VMSTATE_UINT8_EQUAL(cssid, SubchDev, "Bug!"),
VMSTATE_UINT8_EQUAL(ssid, SubchDev, "Bug!"),
VMSTATE_UINT16(migrated_schid, SubchDev),
VMSTATE_UINT16_EQUAL(devno, SubchDev, err_hint_devno),
VMSTATE_BOOL(thinint_active, SubchDev),
VMSTATE_STRUCT(curr_status, SubchDev, 0, vmstate_schib, SCHIB),
VMSTATE_UINT8_ARRAY(sense_data, SubchDev, 32),
VMSTATE_UINT64(channel_prog, SubchDev),
VMSTATE_STRUCT(last_cmd, SubchDev, 0, vmstate_ccw1, CCW1),
VMSTATE_BOOL(last_cmd_valid, SubchDev),
VMSTATE_STRUCT(id, SubchDev, 0, vmstate_sense_id, SenseId),
VMSTATE_BOOL(ccw_fmt_1, SubchDev),
VMSTATE_UINT8(ccw_no_data_cnt, SubchDev),
VMSTATE_END_OF_LIST()
}
};
typedef struct IndAddrPtrTmp {
IndAddr **parent;
uint64_t addr;
int32_t len;
} IndAddrPtrTmp;
static int post_load_ind_addr(void *opaque, int version_id)
{
IndAddrPtrTmp *ptmp = opaque;
IndAddr **ind_addr = ptmp->parent;
if (ptmp->len != 0) {
*ind_addr = get_indicator(ptmp->addr, ptmp->len);
} else {
*ind_addr = NULL;
}
return 0;
}
static void pre_save_ind_addr(void *opaque)
{
IndAddrPtrTmp *ptmp = opaque;
IndAddr *ind_addr = *(ptmp->parent);
if (ind_addr != NULL) {
ptmp->len = ind_addr->len;
ptmp->addr = ind_addr->addr;
} else {
ptmp->len = 0;
ptmp->addr = 0L;
}
}
const VMStateDescription vmstate_ind_addr_tmp = {
.name = "s390_ind_addr_tmp",
.pre_save = pre_save_ind_addr,
.post_load = post_load_ind_addr,
.fields = (VMStateField[]) {
VMSTATE_INT32(len, IndAddrPtrTmp),
VMSTATE_UINT64(addr, IndAddrPtrTmp),
VMSTATE_END_OF_LIST()
}
};
const VMStateDescription vmstate_ind_addr = {
.name = "s390_ind_addr_tmp",
.fields = (VMStateField[]) {
VMSTATE_WITH_TMP(IndAddr*, IndAddrPtrTmp, vmstate_ind_addr_tmp),
VMSTATE_END_OF_LIST()
}
};
typedef struct CssImage {
SubchSet *sch_set[MAX_SSID + 1];
ChpInfo chpids[MAX_CHPID + 1];
@ -77,6 +253,52 @@ static ChannelSubSys channel_subsys = {
QTAILQ_HEAD_INITIALIZER(channel_subsys.indicator_addresses),
};
static void subch_dev_pre_save(void *opaque)
{
SubchDev *s = opaque;
/* Prepare remote_schid for save */
s->migrated_schid = s->schid;
}
static int subch_dev_post_load(void *opaque, int version_id)
{
SubchDev *s = opaque;
/* Re-assign the subchannel to remote_schid if necessary */
if (s->migrated_schid != s->schid) {
if (css_find_subch(true, s->cssid, s->ssid, s->schid) == s) {
/*
* Cleanup the slot before moving to s->migrated_schid provided
* it still belongs to us, i.e. it was not changed by previous
* invocation of this function.
*/
css_subch_assign(s->cssid, s->ssid, s->schid, s->devno, NULL);
}
/* It's OK to re-assign without a prior de-assign. */
s->schid = s->migrated_schid;
css_subch_assign(s->cssid, s->ssid, s->schid, s->devno, s);
}
/*
* Hack alert. If we don't migrate the channel subsystem status
* we still need to find out if the guest enabled mss/mcss-e.
* If the subchannel is enabled, it certainly was able to access it,
* so adjust the max_ssid/max_cssid values for relevant ssid/cssid
* values. This is not watertight, but better than nothing.
*/
if (s->curr_status.pmcw.flags & PMCW_FLAGS_MASK_ENA) {
if (s->ssid) {
channel_subsys.max_ssid = MAX_SSID;
}
if (s->cssid != channel_subsys.default_cssid) {
channel_subsys.max_cssid = MAX_CSSID;
}
}
return 0;
}
IndAddr *get_indicator(hwaddr ind_addr, int len)
{
IndAddr *indicator;
@ -1747,162 +1969,6 @@ int css_enable_mss(void)
return 0;
}
void subch_device_save(SubchDev *s, QEMUFile *f)
{
int i;
qemu_put_byte(f, s->cssid);
qemu_put_byte(f, s->ssid);
qemu_put_be16(f, s->schid);
qemu_put_be16(f, s->devno);
qemu_put_byte(f, s->thinint_active);
/* SCHIB */
/* PMCW */
qemu_put_be32(f, s->curr_status.pmcw.intparm);
qemu_put_be16(f, s->curr_status.pmcw.flags);
qemu_put_be16(f, s->curr_status.pmcw.devno);
qemu_put_byte(f, s->curr_status.pmcw.lpm);
qemu_put_byte(f, s->curr_status.pmcw.pnom);
qemu_put_byte(f, s->curr_status.pmcw.lpum);
qemu_put_byte(f, s->curr_status.pmcw.pim);
qemu_put_be16(f, s->curr_status.pmcw.mbi);
qemu_put_byte(f, s->curr_status.pmcw.pom);
qemu_put_byte(f, s->curr_status.pmcw.pam);
qemu_put_buffer(f, s->curr_status.pmcw.chpid, 8);
qemu_put_be32(f, s->curr_status.pmcw.chars);
/* SCSW */
qemu_put_be16(f, s->curr_status.scsw.flags);
qemu_put_be16(f, s->curr_status.scsw.ctrl);
qemu_put_be32(f, s->curr_status.scsw.cpa);
qemu_put_byte(f, s->curr_status.scsw.dstat);
qemu_put_byte(f, s->curr_status.scsw.cstat);
qemu_put_be16(f, s->curr_status.scsw.count);
qemu_put_be64(f, s->curr_status.mba);
qemu_put_buffer(f, s->curr_status.mda, 4);
/* end SCHIB */
qemu_put_buffer(f, s->sense_data, 32);
qemu_put_be64(f, s->channel_prog);
/* last cmd */
qemu_put_byte(f, s->last_cmd.cmd_code);
qemu_put_byte(f, s->last_cmd.flags);
qemu_put_be16(f, s->last_cmd.count);
qemu_put_be32(f, s->last_cmd.cda);
qemu_put_byte(f, s->last_cmd_valid);
qemu_put_byte(f, s->id.reserved);
qemu_put_be16(f, s->id.cu_type);
qemu_put_byte(f, s->id.cu_model);
qemu_put_be16(f, s->id.dev_type);
qemu_put_byte(f, s->id.dev_model);
qemu_put_byte(f, s->id.unused);
for (i = 0; i < ARRAY_SIZE(s->id.ciw); i++) {
qemu_put_byte(f, s->id.ciw[i].type);
qemu_put_byte(f, s->id.ciw[i].command);
qemu_put_be16(f, s->id.ciw[i].count);
}
qemu_put_byte(f, s->ccw_fmt_1);
qemu_put_byte(f, s->ccw_no_data_cnt);
}
int subch_device_load(SubchDev *s, QEMUFile *f)
{
SubchDev *old_s;
Error *err = NULL;
uint16_t old_schid = s->schid;
uint16_t old_devno = s->devno;
int i;
s->cssid = qemu_get_byte(f);
s->ssid = qemu_get_byte(f);
s->schid = qemu_get_be16(f);
s->devno = qemu_get_be16(f);
if (s->devno != old_devno) {
/* Only possible if machine < 2.7 (no css_dev_path) */
error_setg(&err, "%x != %x", old_devno, s->devno);
error_append_hint(&err, "Devno mismatch, tried to load wrong section!"
" Likely reason: some sequences of plug and unplug"
" can break migration for machine versions prior to"
" 2.7 (known design flaw).\n");
error_report_err(err);
return -EINVAL;
}
/* Re-assign subch. */
if (old_schid != s->schid) {
old_s = channel_subsys.css[s->cssid]->sch_set[s->ssid]->sch[old_schid];
/*
* (old_s != s) means that some other device has its correct
* subchannel already assigned (in load).
*/
if (old_s == s) {
css_subch_assign(s->cssid, s->ssid, old_schid, s->devno, NULL);
}
/* It's OK to re-assign without a prior de-assign. */
css_subch_assign(s->cssid, s->ssid, s->schid, s->devno, s);
}
s->thinint_active = qemu_get_byte(f);
/* SCHIB */
/* PMCW */
s->curr_status.pmcw.intparm = qemu_get_be32(f);
s->curr_status.pmcw.flags = qemu_get_be16(f);
s->curr_status.pmcw.devno = qemu_get_be16(f);
s->curr_status.pmcw.lpm = qemu_get_byte(f);
s->curr_status.pmcw.pnom = qemu_get_byte(f);
s->curr_status.pmcw.lpum = qemu_get_byte(f);
s->curr_status.pmcw.pim = qemu_get_byte(f);
s->curr_status.pmcw.mbi = qemu_get_be16(f);
s->curr_status.pmcw.pom = qemu_get_byte(f);
s->curr_status.pmcw.pam = qemu_get_byte(f);
qemu_get_buffer(f, s->curr_status.pmcw.chpid, 8);
s->curr_status.pmcw.chars = qemu_get_be32(f);
/* SCSW */
s->curr_status.scsw.flags = qemu_get_be16(f);
s->curr_status.scsw.ctrl = qemu_get_be16(f);
s->curr_status.scsw.cpa = qemu_get_be32(f);
s->curr_status.scsw.dstat = qemu_get_byte(f);
s->curr_status.scsw.cstat = qemu_get_byte(f);
s->curr_status.scsw.count = qemu_get_be16(f);
s->curr_status.mba = qemu_get_be64(f);
qemu_get_buffer(f, s->curr_status.mda, 4);
/* end SCHIB */
qemu_get_buffer(f, s->sense_data, 32);
s->channel_prog = qemu_get_be64(f);
/* last cmd */
s->last_cmd.cmd_code = qemu_get_byte(f);
s->last_cmd.flags = qemu_get_byte(f);
s->last_cmd.count = qemu_get_be16(f);
s->last_cmd.cda = qemu_get_be32(f);
s->last_cmd_valid = qemu_get_byte(f);
s->id.reserved = qemu_get_byte(f);
s->id.cu_type = qemu_get_be16(f);
s->id.cu_model = qemu_get_byte(f);
s->id.dev_type = qemu_get_be16(f);
s->id.dev_model = qemu_get_byte(f);
s->id.unused = qemu_get_byte(f);
for (i = 0; i < ARRAY_SIZE(s->id.ciw); i++) {
s->id.ciw[i].type = qemu_get_byte(f);
s->id.ciw[i].command = qemu_get_byte(f);
s->id.ciw[i].count = qemu_get_be16(f);
}
s->ccw_fmt_1 = qemu_get_byte(f);
s->ccw_no_data_cnt = qemu_get_byte(f);
/*
* Hack alert. We don't migrate the channel subsystem status (no
* device!), but we need to find out if the guest enabled mss/mcss-e.
* If the subchannel is enabled, it certainly was able to access it,
* so adjust the max_ssid/max_cssid values for relevant ssid/cssid
* values. This is not watertight, but better than nothing.
*/
if (s->curr_status.pmcw.flags & PMCW_FLAGS_MASK_ENA) {
if (s->ssid) {
channel_subsys.max_ssid = MAX_SSID;
}
if (s->cssid != channel_subsys.default_cssid) {
channel_subsys.max_cssid = MAX_CSSID;
}
}
return 0;
}
void css_reset_sch(SubchDev *sch)
{
PMCW *p = &sch->curr_status.pmcw;

2
hw/s390x/ipl.c
View file

@ -418,7 +418,7 @@ void s390_ipl_prepare_cpu(S390CPU *cpu)
error_report_err(err);
vm_stop(RUN_STATE_INTERNAL_ERROR);
}
ipl->iplb.ccw.netboot_start_addr = ipl->start_addr;
ipl->iplb.ccw.netboot_start_addr = cpu_to_be64(ipl->start_addr);
}
}

160
hw/s390x/virtio-ccw.c
View file

@ -34,9 +34,87 @@
#include "virtio-ccw.h"
#include "trace.h"
#include "hw/s390x/css-bridge.h"
#include "hw/s390x/s390-virtio-ccw.h"
#define NR_CLASSIC_INDICATOR_BITS 64
static int virtio_ccw_dev_post_load(void *opaque, int version_id)
{
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(opaque);
CcwDevice *ccw_dev = CCW_DEVICE(dev);
CCWDeviceClass *ck = CCW_DEVICE_GET_CLASS(ccw_dev);
ccw_dev->sch->driver_data = dev;
if (ccw_dev->sch->thinint_active) {
dev->routes.adapter.adapter_id = css_get_adapter_id(
CSS_IO_ADAPTER_VIRTIO,
dev->thinint_isc);
}
/* Re-fill subch_id after loading the subchannel states.*/
if (ck->refill_ids) {
ck->refill_ids(ccw_dev);
}
return 0;
}
typedef struct VirtioCcwDeviceTmp {
VirtioCcwDevice *parent;
uint16_t config_vector;
} VirtioCcwDeviceTmp;
static void virtio_ccw_dev_tmp_pre_save(void *opaque)
{
VirtioCcwDeviceTmp *tmp = opaque;
VirtioCcwDevice *dev = tmp->parent;
VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
tmp->config_vector = vdev->config_vector;
}
static int virtio_ccw_dev_tmp_post_load(void *opaque, int version_id)
{
VirtioCcwDeviceTmp *tmp = opaque;
VirtioCcwDevice *dev = tmp->parent;
VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
vdev->config_vector = tmp->config_vector;
return 0;
}
const VMStateDescription vmstate_virtio_ccw_dev_tmp = {
.name = "s390_virtio_ccw_dev_tmp",
.pre_save = virtio_ccw_dev_tmp_pre_save,
.post_load = virtio_ccw_dev_tmp_post_load,
.fields = (VMStateField[]) {
VMSTATE_UINT16(config_vector, VirtioCcwDeviceTmp),
VMSTATE_END_OF_LIST()
}
};
const VMStateDescription vmstate_virtio_ccw_dev = {
.name = "s390_virtio_ccw_dev",
.version_id = 1,
.minimum_version_id = 1,
.post_load = virtio_ccw_dev_post_load,
.fields = (VMStateField[]) {
VMSTATE_CCW_DEVICE(parent_obj, VirtioCcwDevice),
VMSTATE_PTR_TO_IND_ADDR(indicators, VirtioCcwDevice),
VMSTATE_PTR_TO_IND_ADDR(indicators2, VirtioCcwDevice),
VMSTATE_PTR_TO_IND_ADDR(summary_indicator, VirtioCcwDevice),
/*
* Ugly hack because VirtIODevice does not migrate itself.
* This also makes legacy via vmstate_save_state possible.
*/
VMSTATE_WITH_TMP(VirtioCcwDevice, VirtioCcwDeviceTmp,
vmstate_virtio_ccw_dev_tmp),
VMSTATE_STRUCT(routes, VirtioCcwDevice, 1, vmstate_adapter_routes,
AdapterRoutes),
VMSTATE_UINT8(thinint_isc, VirtioCcwDevice),
VMSTATE_INT32(revision, VirtioCcwDevice),
VMSTATE_END_OF_LIST()
}
};
static void virtio_ccw_bus_new(VirtioBusState *bus, size_t bus_size,
VirtioCcwDevice *dev);
@ -711,7 +789,7 @@ static void virtio_ccw_device_realize(VirtioCcwDevice *dev, Error **errp)
sch->cssid, sch->ssid, sch->schid, sch->devno,
ccw_dev->devno.valid ? "user-configured" : "auto-configured");
if (!kvm_eventfds_enabled()) {
if (kvm_enabled() && !kvm_eventfds_enabled()) {
dev->flags &= ~VIRTIO_CCW_FLAG_USE_IOEVENTFD;
}
@ -1239,89 +1317,13 @@ static int virtio_ccw_load_queue(DeviceState *d, int n, QEMUFile *f)
static void virtio_ccw_save_config(DeviceState *d, QEMUFile *f)
{
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
CcwDevice *ccw_dev = CCW_DEVICE(d);
SubchDev *s = ccw_dev->sch;
VirtIODevice *vdev = virtio_ccw_get_vdev(s);
subch_device_save(s, f);
if (dev->indicators != NULL) {
qemu_put_be32(f, dev->indicators->len);
qemu_put_be64(f, dev->indicators->addr);
} else {
qemu_put_be32(f, 0);
qemu_put_be64(f, 0UL);
}
if (dev->indicators2 != NULL) {
qemu_put_be32(f, dev->indicators2->len);
qemu_put_be64(f, dev->indicators2->addr);
} else {
qemu_put_be32(f, 0);
qemu_put_be64(f, 0UL);
}
if (dev->summary_indicator != NULL) {
qemu_put_be32(f, dev->summary_indicator->len);
qemu_put_be64(f, dev->summary_indicator->addr);
} else {
qemu_put_be32(f, 0);
qemu_put_be64(f, 0UL);
}
qemu_put_be16(f, vdev->config_vector);
qemu_put_be64(f, dev->routes.adapter.ind_offset);
qemu_put_byte(f, dev->thinint_isc);
qemu_put_be32(f, dev->revision);
vmstate_save_state(f, &vmstate_virtio_ccw_dev, dev, NULL);
}
static int virtio_ccw_load_config(DeviceState *d, QEMUFile *f)
{
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
CcwDevice *ccw_dev = CCW_DEVICE(d);
CCWDeviceClass *ck = CCW_DEVICE_GET_CLASS(ccw_dev);
SubchDev *s = ccw_dev->sch;
VirtIODevice *vdev = virtio_ccw_get_vdev(s);
int len;
int ret;
s->driver_data = dev;
ret = subch_device_load(s, f);
if (ret) {
return ret;
}
/* Re-fill subch_id after loading the subchannel states.*/
if (ck->refill_ids) {
ck->refill_ids(ccw_dev);
}
len = qemu_get_be32(f);
if (len != 0) {
dev->indicators = get_indicator(qemu_get_be64(f), len);
} else {
qemu_get_be64(f);
dev->indicators = NULL;
}
len = qemu_get_be32(f);
if (len != 0) {
dev->indicators2 = get_indicator(qemu_get_be64(f), len);
} else {
qemu_get_be64(f);
dev->indicators2 = NULL;
}
len = qemu_get_be32(f);
if (len != 0) {
dev->summary_indicator = get_indicator(qemu_get_be64(f), len);
} else {
qemu_get_be64(f);
dev->summary_indicator = NULL;
}
qemu_get_be16s(f, &vdev->config_vector);
dev->routes.adapter.ind_offset = qemu_get_be64(f);
dev->thinint_isc = qemu_get_byte(f);
dev->revision = qemu_get_be32(f);
if (s->thinint_active) {
dev->routes.adapter.adapter_id = css_get_adapter_id(
CSS_IO_ADAPTER_VIRTIO,
dev->thinint_isc);
}
return 0;
return vmstate_load_state(f, &vmstate_virtio_ccw_dev, dev, 1);
}
static void virtio_ccw_pre_plugged(DeviceState *d, Error **errp)

12
include/hw/s390x/css.h
View file

@ -88,6 +88,7 @@ struct SubchDev {
bool ccw_fmt_1;
bool thinint_active;
uint8_t ccw_no_data_cnt;
uint16_t migrated_schid; /* used for missmatch detection */
/* transport-provided data: */
int (*ccw_cb) (SubchDev *, CCW1);
void (*disable_cb)(SubchDev *);
@ -96,6 +97,8 @@ struct SubchDev {
void *driver_data;
};
extern const VMStateDescription vmstate_subch_dev;
/*
* Identify a device within the channel subsystem.
* Note that this can be used to identify either the subchannel or
@ -118,18 +121,21 @@ typedef struct IndAddr {
hwaddr addr;
uint64_t map;
unsigned long refcnt;
int len;
int32_t len;
QTAILQ_ENTRY(IndAddr) sibling;
} IndAddr;
extern const VMStateDescription vmstate_ind_addr;
#define VMSTATE_PTR_TO_IND_ADDR(_f, _s) \
VMSTATE_STRUCT(_f, _s, 1, vmstate_ind_addr, IndAddr*)
IndAddr *get_indicator(hwaddr ind_addr, int len);
void release_indicator(AdapterInfo *adapter, IndAddr *indicator);
int map_indicator(AdapterInfo *adapter, IndAddr *indicator);
typedef SubchDev *(*css_subch_cb_func)(uint8_t m, uint8_t cssid, uint8_t ssid,
uint16_t schid);
void subch_device_save(SubchDev *s, QEMUFile *f);
int subch_device_load(SubchDev *s, QEMUFile *f);
int css_create_css_image(uint8_t cssid, bool default_image);
bool css_devno_used(uint8_t cssid, uint8_t ssid, uint16_t devno);
void css_subch_assign(uint8_t cssid, uint8_t ssid, uint16_t schid,

5
include/hw/s390x/s390_flic.h
View file

@ -31,6 +31,11 @@ typedef struct AdapterRoutes {
int gsi[ADAPTER_ROUTES_MAX_GSI];
} AdapterRoutes;
extern const VMStateDescription vmstate_adapter_routes;
#define VMSTATE_ADAPTER_ROUTES(_f, _s) \
VMSTATE_STRUCT(_f, _s, 1, vmstate_adapter_routes, AdapterRoutes)
#define TYPE_S390_FLIC_COMMON "s390-flic"
#define S390_FLIC_COMMON(obj) \
OBJECT_CHECK(S390FLICState, (obj), TYPE_S390_FLIC_COMMON)

6
target/s390x/cpu.h
View file

@ -1264,7 +1264,11 @@ static inline int s390_assign_subch_ioeventfd(EventNotifier *notifier,
uint32_t sch_id, int vq,
bool assign)
{
return kvm_s390_assign_subch_ioeventfd(notifier, sch_id, vq, assign);
if (kvm_enabled()) {
return kvm_s390_assign_subch_ioeventfd(notifier, sch_id, vq, assign);
} else {
return 0;
}
}
static inline void s390_crypto_reset(void)

62
target/s390x/cpu_models.c
View file

@ -283,10 +283,41 @@ void s390_cpu_list(FILE *f, fprintf_function print)
}
}
static S390CPUModel *get_max_cpu_model(Error **errp);
#ifndef CONFIG_USER_ONLY
static void list_add_feat(const char *name, void *opaque);
static void check_unavailable_features(const S390CPUModel *max_model,
const S390CPUModel *model,
strList **unavailable)
{
S390FeatBitmap missing;
/* check general model compatibility */
if (max_model->def->gen < model->def->gen ||
(max_model->def->gen == model->def->gen &&
max_model->def->ec_ga < model->def->ec_ga)) {
list_add_feat("type", unavailable);
}
/* detect missing features if any to properly report them */
bitmap_andnot(missing, model->features, max_model->features,
S390_FEAT_MAX);
if (!bitmap_empty(missing, S390_FEAT_MAX)) {
s390_feat_bitmap_to_ascii(missing, unavailable, list_add_feat);
}
}
struct CpuDefinitionInfoListData {
CpuDefinitionInfoList *list;
S390CPUModel *model;
};
static void create_cpu_model_list(ObjectClass *klass, void *opaque)
{
CpuDefinitionInfoList **cpu_list = opaque;
struct CpuDefinitionInfoListData *cpu_list_data = opaque;
CpuDefinitionInfoList **cpu_list = &cpu_list_data->list;
CpuDefinitionInfoList *entry;
CpuDefinitionInfo *info;
char *name = g_strdup(object_class_get_name(klass));
@ -300,7 +331,19 @@ static void create_cpu_model_list(ObjectClass *klass, void *opaque)
info->migration_safe = scc->is_migration_safe;
info->q_static = scc->is_static;
info->q_typename = g_strdup(object_class_get_name(klass));
/* check for unavailable features */
if (cpu_list_data->model) {
Object *obj;
S390CPU *sc;
obj = object_new(object_class_get_name(klass));
sc = S390_CPU(obj);
if (sc->model) {
info->has_unavailable_features = true;
check_unavailable_features(cpu_list_data->model, sc->model,
&info->unavailable_features);
}
object_unref(obj);
}
entry = g_malloc0(sizeof(*entry));
entry->value = info;
@ -310,11 +353,20 @@ static void create_cpu_model_list(ObjectClass *klass, void *opaque)
CpuDefinitionInfoList *arch_query_cpu_definitions(Error **errp)
{
CpuDefinitionInfoList *list = NULL;
struct CpuDefinitionInfoListData list_data = {
.list = NULL,
};
object_class_foreach(create_cpu_model_list, TYPE_S390_CPU, false, &list);
list_data.model = get_max_cpu_model(errp);
if (*errp) {
error_free(*errp);
*errp = NULL;
}
return list;
object_class_foreach(create_cpu_model_list, TYPE_S390_CPU, false,
&list_data);
return list_data.list;
}
static void cpu_model_from_info(S390CPUModel *model, const CpuModelInfo *info,