target/s390x: Use unwind data for helper_clm

Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>

target/s390x: Use unwind data for helper_clc

Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>

target/s390x: Use unwind data for helper_mvc

Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>

target/s390x: Use unwind data for helper_xc

Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>

target/s390x: Use unwind data for helper_oc

Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>

target/s390x: Use unwind data for helper_nc

Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>

target/s390x: Move helper_ex to end of file

This will avoid needing forward declarations in following patches.

Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <r

target/s390x: Move helper_ex to end of file

This will avoid needing forward declarations in following patches.

Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>

show more ...

target/s390x: Use cpu_loop_exit_restore for tlb_fill

Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>

target/s390x: Add support for the TEST BLOCK instruction

TEST BLOCK was likely once used to execute basic memory
tests, but nowadays it's just a (slow) way to clear a page.

Reviewed-by: Aurelien Ja

target/s390x: Add support for the TEST BLOCK instruction

TEST BLOCK was likely once used to execute basic memory
tests, but nowadays it's just a (slow) way to clear a page.

Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1495128400-23759-1-git-send-email-thuth@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>

show more ...

s390x/cpumodel: improve defintion search without an IBC

Currently, under z/VM on a 0x2827, QEMU will detect a 0x2828 if no
IBC value is provided. QEMU will simply take the last model of that HW
gene

s390x/cpumodel: improve defintion search without an IBC

Currently, under z/VM on a 0x2827, QEMU will detect a 0x2828 if no
IBC value is provided. QEMU will simply take the last model of that HW
generation, which happens to be the BC version.

Let's improve our search for that case by selecting the latest CPU
definition that matches the CPU type. This for example will avoid
detecting an z13 as a z13s.

We might still detect a GA2 version on a GA1 system, but as we don't
have further information at hand, there isn't too much we can do about
it. The alternative of always presenting the oldest GA is not backward
compatible, e.g:
You're running on 0x2827 GA2.
Old QEMU version indicated "0x2828 GA1 == 0x2827 GA2". After you updated
QEMU, you suddenly detect "0x2827 GA1". You're previous libvirt guest
might suddenly refuse to run.

In the end presenting a newer GA level does not matter because:

1: All GAX models share the same base feature set. A GAX++ might
support "more features".
2: Without an IBC, the guest can't detect the GA version.

If we have no IBC (esp. unblocked_ibc == 0), the IBC we will present
to the guest in read_SCP_info() will be 0. The guest will not know
which GA version it has. The problem of missing IBC propagates.

If we don't have a feature of the GA++ version, also our guest won't
have it. So in summary, the guest also has no idea of its GA version.

Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20170531193434.6918-3-david@redhat.com>
Acked-by: Jason J. Herne <jjherne@linux.vnet.ibm.com>
Reviewed-by: Halil Pasic <pasic@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
[improve patch description by reusing mailing list discussion]

show more ...

s390x/cpumodel: take care of the cpuid format bit for KVM

Let's also properly forward that bit. It should always be set. I
verified it under z/VM, it seems to be always set there. For now,
zKVM gues

s390x/cpumodel: take care of the cpuid format bit for KVM

Let's also properly forward that bit. It should always be set. I
verified it under z/VM, it seems to be always set there. For now,
zKVM guests never get that bit set when the CPU model is active.

The PoP mentiones, that z800 + z900 (HW generation 7) always set this
bit to 0, so let's take care of that.

Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20170531193434.6918-2-david@redhat.com>
Acked-by: Jason J. Herne <jjherne@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>

show more ...

s390x/css: fence off MIDA

MIDA (modified indirect data addressing) is an optional facility, and
we (currently) don't support it. Let's post an operand exception if
the guest tries to set it in the o

s390x/css: fence off MIDA

MIDA (modified indirect data addressing) is an optional facility, and
we (currently) don't support it. Let's post an operand exception if
the guest tries to set it in the orb and a channel program check
if it is set in a ccw, as specified in the Principles of Operation.

Reviewed-by: Claudio Imbrenda <imbrenda@linux.vnet.ibm.com>
Reviewed-by: Halil Pasic <pasic@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>

show more ...

target/s390: Use tcg_gen_lookup_and_goto_ptr

Tested-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>

migration: Remove unneeded includes of migration/vmstate.h

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Dr. David Alan Gilber

migration: Remove unneeded includes of migration/vmstate.h

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

show more ...

Merge remote-tracking branch 'armbru/tags/pull-qapi-2017-05-23' into staging

QAPI patches for 2017-05-23

# gpg: Signature made Tue 23 May 2017 12:33:32 PM BST
# gpg: using RSA key 0x

Merge remote-tracking branch 'armbru/tags/pull-qapi-2017-05-23' into staging

QAPI patches for 2017-05-23

# gpg: Signature made Tue 23 May 2017 12:33:32 PM BST
# gpg: using RSA key 0x3870B400EB918653
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>"
# gpg: aka "Markus Armbruster <armbru@pond.sub.org>"
# Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867 4E5F 3870 B400 EB91 8653

* armbru/tags/pull-qapi-2017-05-23:
qapi-schema: Remove obsolete note from ObjectTypeInfo
block: Use QDict helpers for --force-share
shutdown: Expose bool cause in SHUTDOWN and RESET events
shutdown: Add source information to SHUTDOWN and RESET
shutdown: Preserve shutdown cause through replay
shutdown: Prepare for use of an enum in reset/shutdown_request
shutdown: Simplify shutdown_signal
sockets: Plug memory leak in socket_address_flatten()
scripts/qmp/qom-set: fix the value argument passed to srv.command()

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

show more ...

shutdown: Add source information to SHUTDOWN and RESET

Time to wire up all the call sites that request a shutdown or
reset to use the enum added in the previous patch.

It would have been less churn

shutdown: Add source information to SHUTDOWN and RESET

Time to wire up all the call sites that request a shutdown or
reset to use the enum added in the previous patch.

It would have been less churn to keep the common case with no
arguments as meaning guest-triggered, and only modified the
host-triggered code paths, via a wrapper function, but then we'd
still have to audit that I didn't miss any host-triggered spots;
changing the signature forces us to double-check that I correctly
categorized all callers.

Since command line options can change whether a guest reset request
causes an actual reset vs. a shutdown, it's easy to also add the
information to reset requests.

Signed-off-by: Eric Blake <eblake@redhat.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au> [ppc parts]
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> [SPARC part]
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> [s390x parts]
Message-Id: <20170515214114.15442-5-eblake@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>

show more ...

s390/kvm: do not reset riccb on initial cpu reset

The riccb is kept unchanged during initial cpu reset. Move the data
structure to the other registers that are unchanged.

Signed-off-by: Christian B

s390/kvm: do not reset riccb on initial cpu reset

The riccb is kept unchanged during initial cpu reset. Move the data
structure to the other registers that are unchanged.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>

show more ...

s390x/css: ccw translation infrastructure

Implement a basic infrastructure of handling channel I/O instruction
interception for passed through subchannels:
1. Branch the code path of instruction int

s390x/css: ccw translation infrastructure

Implement a basic infrastructure of handling channel I/O instruction
interception for passed through subchannels:
1. Branch the code path of instruction interception handling by
SubChannel type.
2. For a passed-through subchannel, issue the ORB to kernel to do ccw
translation and perform an I/O operation.
3. Assign different condition code based on the I/O result, or
trigger a program check.

Signed-off-by: Xiao Feng Ren <renxiaof@linux.vnet.ibm.com>
Signed-off-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com>
Message-Id: <20170517004813.58227-12-bjsdjshi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>

show more ...

s390x/css: add s390-squash-mcss machine option

We want to support real (i.e. not virtual) channel devices
even for guests that do not support MCSS-E (where guests may
see devices from any channel su

s390x/css: add s390-squash-mcss machine option

We want to support real (i.e. not virtual) channel devices
even for guests that do not support MCSS-E (where guests may
see devices from any channel subsystem image at once). As all
virtio-ccw devices are in css 0xfe (and show up in the default
css 0 for guests not activating MCSS-E), we need an option to
squash both the virtio subchannels and e.g. passed-through
subchannels from their real css (0-3, or 0 for hosts not
activating MCSS-E) into the default css. This will be
exploited in a later patch.

Signed-off-by: Xiao Feng Ren <renxiaof@linux.vnet.ibm.com>
Signed-off-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com>
Message-Id: <20170517004813.58227-4-bjsdjshi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>

show more ...

target/s390x: implement serialization in BRANCH CONDITION

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Message-Id: <20170509082800.10756-4-aurelien@aurel32.net>
Signed-off-by: Richard Hender

target/s390x: implement serialization in BRANCH CONDITION

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Message-Id: <20170509082800.10756-4-aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>

show more ...

target/s390x: fix SIGNAL PROCESSOR return value

The SIGNAL PROCESSOR helper returns its value through the CC register.
set_cc_static should be called just after the helper.

Signed-off-by: Aurelien

target/s390x: fix SIGNAL PROCESSOR return value

The SIGNAL PROCESSOR helper returns its value through the CC register.
set_cc_static should be called just after the helper.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Message-Id: <20170509082800.10756-3-aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>

show more ...

target/s390x: mask the SIGP order_code using SIGP_ORDER_MASK

For that move the definition from kvm.c to cpu.h

Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Cornelia Huck <cornelia.huck@d

target/s390x: mask the SIGP order_code using SIGP_ORDER_MASK

For that move the definition from kvm.c to cpu.h

Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Message-Id: <20170509082800.10756-2-aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>

show more ...

target/s390x: Use atomic operations for LOAD AND OP

Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>

target/s390x: Use atomic operations for COMPARE SWAP

Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>

target/s390x: Implement LOAD PAIR DISJOINT

Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Eric Bischoff <ebischoff@nerim.net>
Message-Id: <20170228120134.7921-1-ebischoff@suse.com

target/s390x: Implement LOAD PAIR DISJOINT

Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Eric Bischoff <ebischoff@nerim.net>
Message-Id: <20170228120134.7921-1-ebischoff@suse.com>
[rth: Combine the two via insn->data; free the address temps.]
Signed-off-by: Richard Henderson <rth@twiddle.net>

show more ...