Features for s390x/kvm

1. guest reIPL changes (Fan Zhang)
Implements subcode 5 and 6 of diag 0x308. This allows to use
/sys/firmware/[re]ipl/ccw/* and the chreipl and lsreipl tools in
Linux. In addition to the normal "change the disk" this also
allows to switch from booting an external kernel into rebooting
from a disk.

2. Memory page table walking (Thomas Huth)
Fix several page table walking functions, used in several places
like gdb server and instruction handling. Also use these functions
in several I/O related functions.

# gpg: Signature made Wed Feb 18 09:13:22 2015 GMT using RSA key ID B5A61C7C
# gpg: Good signature from "Christian Borntraeger (IBM) <borntraeger@de.ibm.com>"

* remotes/borntraeger/tags/s390x-20150218: (29 commits)
  s390x/helper: Remove s390_cpu_physical_memory_map
  s390x/pci: Rework memory access in zpci instruction
  s390x/ioinst: Rework memory access in TPI instruction
  s390x/ioinst: Rework memory access in CHSC instruction
  s390x/ioinst: Rework memory access in STCRW instruction
  s390x/ioinst: Rework memory access in TSCH instruction
  s390x/ioinst: Set condition code in ioinst_handle_tsch() handler
  s390x/ioinst: Rework memory access in STSCH instruction
  s390x/ioinst: Rework memory access in SSCH instruction
  s390x/ioinst: Rework memory access in MSCH instruction
  s390x/css: Make schib parameter of css_do_msch const
  s390x/mmu: Add function for accessing guest memory
  s390x/kvm: Add function for injecting pgm access exceptions
  s390x/mmu: Clean up mmu_translate_asc()
  s390x/mmu: Check bit 52 in page table entry
  s390x/mmu: Renaming related to the ASCE confusion
  s390x/mmu: Add support for read-only regions
  s390x/mmu: Fix the exception codes for illegal table entries
  s390x/mmu: Fix exception types when checking the ASCEs
  s390x/mmu: Fix translation exception code in lowcore
  ...
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

Clean up around error_get_pretty(), qerror_report_err()

# gpg: Signature made Wed Feb 18 10:10:07 2015 GMT using RSA key ID EB918653
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>"
# gpg:                 aka "Markus Armbruster <armbru@pond.sub.org>"

* remotes/armbru/tags/pull-error-2015-02-18:
  qemu-char: Avoid qerror_report_err() outside QMP command handlers
  qemu-img: Avoid qerror_report_err() outside QMP command handlers
  vl: Avoid qerror_report_err() outside QMP command handlers
  tpm: Avoid qerror_report_err() outside QMP command handlers
  numa: Avoid qerror_report_err() outside QMP command handlers
  net: Avoid qerror_report_err() outside QMP command handlers
  monitor: Avoid qerror_report_err() outside QMP command handlers
  monitor: Clean up around monitor_handle_fd_param()
  error: Use error_report_err() where appropriate
  error: New convenience function error_report_err()
  vhost-scsi: Improve error reporting for invalid vhostfd
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

hmp: Normalize HMP command handler names

# gpg: Signature made Wed Feb 18 10:59:44 2015 GMT using RSA key ID EB918653
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>"
# gpg:                 aka "Markus Armbruster <armbru@pond.sub.org>"

* remotes/armbru/tags/pull-monitor-2015-02-18:
  hmp: Name HMP info handler functions hmp_info_SUBCOMMAND()
  hmp: Name HMP command handler functions hmp_COMMAND()
  hmp: Clean up declarations for long-gone info handlers
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

usb: error handling fixes from Markus, make sysbus ehci arm-only.

# gpg: Signature made Wed Feb 18 09:54:13 2015 GMT using RSA key ID D3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>"

* remotes/kraxel/tags/pull-usb-20150218-1:
  Make sysbus EHCI devices ARM only by default
  PPC: Don't use legacy -usbdevice support for setting up board
  r2d: Don't use legacy -usbdevice support for setting up board
  usb: Change usb_create_simple() to abort on failure
  usb: Suppress bogus error when automatic usb-hub creation fails
  usb: Do not prefix error_setg() messages with "Error: "
  usb: Improve -usbdevice error reporting a bit
  usb: usb_create() can't fail, drop useless error handling
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

tag for qga-pull-2015-02-16-v2

v2:

* generalized QAPI function definition for guest-memory-block-size
  to guest-memory-block-info for future extensibility (Eric)

# gpg: Signature made Tue Feb 17 22:36:08 2015 GMT using RSA key ID F108B584
# gpg: Good signature from "Michael Roth <flukshun@gmail.com>"
# gpg:                 aka "Michael Roth <mdroth@utexas.edu>"
# gpg:                 aka "Michael Roth <mdroth@linux.vnet.ibm.com>"
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: CEAC C9E1 5534 EBAB B82D  3FA0 3353 C9CE F108 B584

* remotes/mdroth/tags/qga-pull-2015-02-16-v2-tag:
  qemu-ga-win: Fail loudly on bare 'set-time'
  qga: add memory block command that unsupported
  qga: implement qmp_guest_get_memory_block_info() for Linux with sysfs
  qga: implement qmp_guest_set_memory_blocks() for Linux with sysfs
  qga: implement qmp_guest_get_memory_blocks() for Linux with sysfs
  qga: introduce three guest memory block commmands with stubs
  qga: implement file commands for Windows guest
  guest agent: guest-file-open: refactoring
  utils: drop strtok_r from envlist_parse
  qga: add guest-set-user-password command
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

- vhost-scsi: add bootindex property
- RCU: fix MemoryRegion lifetime issues in PCI; document the rules;
convert of AddressSpaceDispatch and RAMList
- KVM: add kvm_exit reasons for aarch64

# gpg: Signature made Mon Feb 16 16:32:32 2015 GMT using RSA key ID 78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>"
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4  E2F7 7E15 100C CD36 69B1
#      Subkey fingerprint: F133 3857 4B66 2389 866C  7682 BFFB D25F 78C7 AE83

* remotes/bonzini/tags/for-upstream: (21 commits)
  Convert ram_list to RCU
  exec: convert ram_list to QLIST
  cosmetic changes preparing for the following patches
  exec: protect mru_block with RCU
  rcu: add g_free_rcu
  rcu: introduce RCU-enabled QLIST
  exec: RCUify AddressSpaceDispatch
  exec: make iotlb RCU-friendly
  exec: introduce cpu_reload_memory_map
  docs: clarify memory region lifecycle
  pci: split shpc_cleanup and shpc_free
  pcie: remove mmconfig memory leak and wrap mmconfig update with transaction
  memory: keep the owner of the AddressSpace alive until do_address_space_destroy
  rcu: run RCU callbacks under the BQL
  rcu: do not let RCU callbacks pile up indefinitely
  vhost-scsi: set the bootable value of channel/target/lun
  vhost-scsi: add a property for booting
  vhost-scsi: expose the TYPE_FW_PATH_PROVIDER interface
  vhost-scsi: add bootindex property
  qdev: support to get a device firmware path directly
  ...
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

Pull request

v2:
 * Fix C11 typedef redefinitions in ahci and libqos malloc [Peter]
 * Fix lx -> PRIx64 format specifiers in ahci [Peter]

# gpg: Signature made Mon Feb 16 15:45:53 2015 GMT using RSA key ID 81AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg:                 aka "Stefan Hajnoczi <stefanha@gmail.com>"

* remotes/stefanha/tags/block-pull-request: (65 commits)
  block: Keep bdrv_check*_request()'s return value
  block: Remove "growable" from BDS
  block: Clamp BlockBackend requests
  qemu-io: Use BlockBackend
  qemu-io: Remove "growable" option
  qemu-io: Use blk_new_open() in openfile()
  qemu-nbd: Use blk_new_open() in main()
  qemu-img: Use BlockBackend as far as possible
  qemu-img: Use blk_new_open() in img_rebase()
  qemu-img: Use blk_new_open() in img_open()
  block/xen: Use blk_new_open() in blk_connect()
  blockdev: Use blk_new_open() in blockdev_init()
  iotests: Add test for driver=qcow2, format=qcow2
  block: Add Error parameter to bdrv_find_protocol()
  block: Add blk_new_open()
  block: Lift some BDS functions to the BlockBackend
  iotests: Add test for qemu-img convert to NBD
  qemu-img: Fix qemu-img convert -n
  qemu-iotests: Add 093 for IO throttling
  qemu-iotests: Allow caller to disable underscore convertion for qmp
  ...
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

vnc: fixup some QemuOpts conversion fallout.

# gpg: Signature made Mon Feb 16 08:13:32 2015 GMT using RSA key ID D3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>"

* remotes/kraxel/tags/pull-vnc-20150216-1:
  vnc: fix coverity warning
  ui/vnc: optimize full scanline updates
  vnc: auto assian an id when calling change vnc qmp interface
  vnc: introduce an wrapper for auto assign vnc id
  vnc: using bool type instead of int for QEMU_OPT_BOOL
  vnc: correct missing property about vnc_display
  vnc: fix qemu crash when not configure vnc option
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

MIPS patches 2015-02-13

Changes:
* bug fixes, cleanups and minor improvements

# gpg: Signature made Sat Feb 14 17:01:37 2015 GMT using RSA key ID 0B29DA6B
# gpg: Can't check signature: public key not found

* remotes/lalrae/tags/mips-20150213-2:
  linux-user: correct stat structure in MIPS N32
  target-mips: pass 0 instead of -1 as rs in microMIPS LUI instruction
  target-mips: fix broken snapshotting
  target-mips: use CP0EnLo_XI instead of magic number
  target-mips: ll and lld cause AdEL exception for unaligned address
  target-mips: fix detection of the end of the page during translation
  target-mips: Make CP0.Status.CU1 read-only for the 5Kc and 5KEc processors
  isa: remove isa_mem_base variable
  gt64xxx: remove isa_mem_base usage
  piix4: use PCI address space instead of system memory
  mips: remove isa_mem_base usage
  jazz: remove usage of isa_mem_base
  jazz: do not explode QEMUMachineInitArgs structure
  isa: add memory space parameter to isa_bus_new
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

Some are called do_info_SUBCOMMAND() (old ones, usually), some
hmp_info_SUBCOMMAND(), some SUBCOMMAND_info(), sometimes SUBCOMMAND
pointlessly differs in spelling.

Normalize to hmp_info_SUBCOMMAND(), where SUBCOMMAND is exactly the
subcommand name with '-' replaced by '_'.

Exceptions:

* sun4m_irq_info(), sun4m_pic_info() renamed to sun4m_hmp_info_irq(),
  sun4m_hmp_info_pic().

* lm32_irq_info(), lm32_pic_info() renamed to lm32_hmp_info_irq(),
  lm32_hmp_info_pic().
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>

Some are called do_COMMAND() (old ones, usually), some hmp_COMMAND(),
and sometimes COMMAND pointlessly differs in spelling.

Normalize to hmp_COMMAND(), where COMMAND is exactly the command name
with '-' replaced by '_'.

Exceptions:

* do_device_add() and client_migrate_info() *not* renamed to
  hmp_device_add(), hmp_client_migrate_info(), because they're also
  QMP handlers.  They still need to be converted to QAPI.

* do_memory_dump(), do_physical_memory_dump(), do_ioport_read(),
  do_ioport_write() renamed do hmp_* instead of hmp_x(), hmp_xp(),
  hmp_i(), hmp_o(), because those names are too cryptic for my taste.

* do_info_help() renamed to hmp_info_help() instead of hmp_info(),
  because it only covers help.
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>

Leftovers from
d1f29646 qapi: Convert query-spice
791e7c82 qapi: Convert query-migrate
0fe6a7f2 slirp: Drop statistic code
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>

A number of ARM embedded boards include EHCI USB host controllers which
appear as directly mapped devices, rather than sitting on a PCI bus.

At present code to emulate such devices is included whenever EHCI support
is included.  This patch adjusts teh config options to only include them
in builds targetting ARM by default.
Signed-off-by: NDavid Gibson <david@gibson.dropbear.id.au>
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

It's tempting, because usbdevice_create() is so simple to use.  But
there's a lot of unwanted complexity behind the simple interface.
Switch to usb_create_simple().

Cc: Alexander Graf <agraf@suse.de>
Cc: qemu-ppc@nongnu.org
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Reviewed-by: NAlexander Graf <agraf@suse.de>
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

It's tempting, because usbdevice_create() is so simple to use.  But
there's a lot of unwanted complexity behind the simple interface.
Switch to usb_create_simple().

Cc: Magnus Damm <magnus.damm@gmail.com>
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

Instead of returning null pointer.  Matches pci_create_simple(),
isa_create_simple(), sysbus_create_simple().  It's unused since the
previous commit, but I'll put it to use again shortly.
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

USBDevice's realize method usb_qdev_realize() automatically creates a
usb-hub when only one port is left.  Creating devices in realize
methods is questionable, but works.

If usb-hub creation fails, an error is reported to stderr, but the
failure is otherwise ignored.  We then create the actual device using
the last port, which may well succeed.

Example:

    $ qemu -nodefaults -S -display none -machine usb=on -monitor stdio
    QEMU 2.2.50 monitor - type 'help' for more information
    (qemu) device_add usb-mouse
    [Repeat 36 times]
    (qemu) info usb
      Device 0.0, Port 1, Speed 12 Mb/s, Product QEMU USB Mouse
      Device 0.0, Port 2, Speed 12 Mb/s, Product QEMU USB Hub
      Device 0.0, Port 2.1, Speed 12 Mb/s, Product QEMU USB Mouse
    [More mice and hubs omitted...]
      Device 0.0, Port 2.8.8.8.8.7, Speed 12 Mb/s, Product QEMU USB Mouse
    (qemu) device_add usb-mouse
    usb hub chain too deep
    Failed to initialize USB device 'usb-hub'
    (qemu) info usb
    [...]
      Device 0.0, Port 2.8.8.8.8.7, Speed 12 Mb/s, Product QEMU USB Mouse
      Device 0.0, Port 2.8.8.8.8.8, Speed 12 Mb/s, Product QEMU USB Mouse

Despite the "Failed" message, the command actually succeeded.

In QMP, it's worse.  When adding the 37th mouse via QMP, the command
fails with

    {"error": {"class": "GenericError", "desc": "usb hub chain too deep"}}

Additionally, "Failed to initialize USB device 'usb-hub'" is reported
on stderr.  Despite the command failure, the device was created.  This
is wrong.

Fix by avoiding qdev_init() for usb-hub creation, so we can ignore
errors cleanly.
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

Because it produces beauties like

    (qemu) usb_add mouse
    Failed to initialize USB device 'usb-mouse': Error: tried to attach usb device QEMU USB Mouse to a bus with no free ports
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

Most LegacyUSBFactory usbdevice_init() methods realize with
qdev_init_nofail(), even though their caller usbdevice_create() can
handle failure.  Okay if it really can't fail (I didn't check), but
somewhat brittle.

usb_msd_init() and usb_bt_init() call qdev_init().  The latter
additionally reports an error when qdev_init() fails.

Realization failure produces multiple error reports: a specific one
from qdev_init(), and generic ones from usb_bt_init(),
usb_create_simple(), usbdevice_create() and usb_parse().

Remove realization from the usbdevice_init() methods.  Realize in
usbdevice_create(), and produce exactly one error message there.  You
still get another one from usb_parse().
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

qerror_report_err() is a transitional interface to help with
converting existing monitor commands to QMP.  It should not be used
elsewhere.  Replace by error_report_err() in legacy chardev parser
qemu_chr_parse_compat().  Legacy chardev syntax is not to be used in
QMP.
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Reviewed-by: NEric Blake <eblake@redhat.com>

qerror_report_err() is a transitional interface to help with
converting existing monitor commands to QMP.  It should not be used
elsewhere.  Replace by error_report_err().
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Reviewed-by: NEric Blake <eblake@redhat.com>

qerror_report_err() is a transitional interface to help with
converting existing monitor commands to QMP.  It should not be used
elsewhere.  Replace by error_report_err() in initial startup helpers
machine_set_property() and object_create().
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Reviewed-by: NEric Blake <eblake@redhat.com>

qerror_report_err() is a transitional interface to help with
converting existing monitor commands to QMP.  It should not be used
elsewhere.  Replace by error_report_err() in initial startup helper
configure_tpm().
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Reviewed-by: NEric Blake <eblake@redhat.com>

qerror_report_err() is a transitional interface to help with
converting existing monitor commands to QMP.  It should not be used
elsewhere.  Replace by error_report_err() in initial startup helper
numa_init_func() and board setup helper
memory_region_allocate_system_memory().
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Reviewed-by: NEric Blake <eblake@redhat.com>

qerror_report_err() is a transitional interface to help with
converting existing monitor commands to QMP.  It should not be used
elsewhere.  Replace by error_report_err() in HMP command handler
hmp_host_net_add() and initial startup helpers net_init_client(),
net_init_netdev().  Keep it in QMP command handler qmp_netdev_add().
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Reviewed-by: NEric Blake <eblake@redhat.com>

qerror_report_err() is a transitional interface to help with
converting existing monitor commands to QMP.  It should not be used
elsewhere.  Replace by error_report_err() in HMP command handler
hmp_trace_event().
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Reviewed-by: NEric Blake <eblake@redhat.com>

monitor_handle_fd_param() is a wrapper around
monitor_handle_fd_param2() that feeds errors to qerror_report_err()
instead of returning them.  qerror_report_err() is inappropriate in
many contexts.  monitor_handle_fd_param() looks simpler than
monitor_handle_fd_param2(), which tempts use.  Remove the temptation:
drop the wrapper and open-code the (trivial) error handling instead.

Replace the open-coded qerror_report_err() by error_report_err() in
places that already use error_report().  Turns out that's everywhere.

While there, rename monitor_handle_fd_param2() to monitor_fd_param().
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Reviewed-by: NEric Blake <eblake@redhat.com>

Coccinelle semantic patch:

    @@
    expression E;
    @@
    -    error_report("%s", error_get_pretty(E));
    -    error_free(E);
    +    error_report_err(E);
    @@
    expression E, S;
    @@
    -    error_report("%s", error_get_pretty(E));
    +    error_report_err(E);
    (
         exit(S);
    |
         abort();
    )

Trivial manual touch-ups in block/sheepdog.c.
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Reviewed-by: NEric Blake <eblake@redhat.com>

I've typed error_report("%s", error_get_pretty(ERR)) too many times
already, and I've fixed too many instances of qerror_report_err(ERR)
to error_report("%s", error_get_pretty(ERR)) as well.  Capture the
pattern in a convenience function.

Since it's almost invariably followed by error_free(), stuff that into
the convenience function as well.

The next patch will put it to use.
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Reviewed-by: NEric Blake <eblake@redhat.com>

We get two error messages: one from monitor_handle_fd_param2(), and
another one from vhost_scsi_realize().  The second one gets suppressed
in QMP context.

That's because monitor_handle_fd_param() calls qerror_report_err().
Calling qerror_report_err() is always inappropriate in realize
methods, because it doesn't return the Error object.  It either
reports the error to stderr or the human monitor, or it stores it in
the QMP monitor, where it makes the QMP command fail even when the
realize method ignores the error and succeeds.  Fortunately,
vhost_scsi_realize() doesn't do that.

Fix by switching to monitor_handle_fd_param2().
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Acked-by: NPaolo Bonzini <pbonzini@redhat.com>

The function is now not used anymore, so it can be removed safely.
Signed-off-by: NThomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: NJens Freimann <jfrei@linux.vnet.ibm.com>
Acked-by: NCornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: NDavid Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com>

Change zpci instructions to use the new logical memory access
functions.
Signed-off-by: NFrank Blaschka <blaschka@linux.vnet.ibm.com>
Signed-off-by: NJens Freimann <jfrei@linux.vnet.ibm.com>
Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com>

Change the handler for TPI to use the new logical memory
access functions.
Signed-off-by: NThomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: NJens Freimann <jfrei@linux.vnet.ibm.com>
Acked-by: NCornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com>

Change the CHSC handler to correctly use logical addresses, too.
Signed-off-by: NThomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: NJens Freimann <jfrei@linux.vnet.ibm.com>
Reviewed-by: NDavid Hildenbrand <dahi@linux.vnet.ibm.com>
Reviewed-by: NCornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com>

Change the handler for STCRW to use the new logical memory access
functions. Since STCRW is suppressed on protection/access exceptions,
we also have to make sure to re-queue the CRW in case it could not be
written to the memory.
Signed-off-by: NThomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: NJens Freimann <jfrei@linux.vnet.ibm.com>
Reviewed-by: NDavid Hildenbrand <dahi@linux.vnet.ibm.com>
Reviewed-by: NCornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com>

Change the TSCH handler to use the new logical memory access functions.
Since the channel should not be updated in case of a protection or access
exception while writing to the guest memory, the css_do_tsch() has to be
split up into two parts, one for retrieving the IRB and one for the update.
Signed-off-by: NThomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: NJens Freimann <jfrei@linux.vnet.ibm.com>
Reviewed-by: NCornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com>

Move the setting of the condition code from kvm.c into the handler
function in ioinst.c itself, just like it has been done with the other
handlers already (TSCH has just not been changed yet since it is called
from a different dispatcher in kvm.c).
Signed-off-by: NThomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: NJens Freimann <jfrei@linux.vnet.ibm.com>
Reviewed-by: NCornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: NDavid Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com>

Change the handler for STSCH to use the new logical memory
access functions.
Signed-off-by: NThomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: NJens Freimann <jfrei@linux.vnet.ibm.com>
Reviewed-by: NCornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com>

Change the handler for SSCH to use the new logical memory
access functions.
Signed-off-by: NThomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: NJens Freimann <jfrei@linux.vnet.ibm.com>
Reviewed-by: NCornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com>