Tom Musta [Thu, 2 Jan 2014 22:21:20 +0000 (16:21 -0600)]
target-ppc: General Support for VSX Helpers
This patch adds general support that will be used by the VSX helper
routines:
- a union describing the various VSR subfields.
- access routines to get and set VSRs
- VSX decoders
- a general routine to generate a handler that invokes a VSX
helper.
Tom Musta [Thu, 2 Jan 2014 22:21:19 +0000 (16:21 -0600)]
target-ppc: Add set_fprf Argument to fload_invalid_op_excp()
The fload_invalid_op_excp() function sets assorted invalid
operation status bits. However, it also implicitly modifies
the FPRF field of the PowerPC FPSCR. Many VSX instructions
set invalid operation bits but do not alter FPRF. Thus the
function is more generally useful if the setting of the FPRF
field is made conditional via a parameter.
All invocations of this routine in existing instructions are
modified to pass 1 and thus retain their current behavior.
Nathan Whitehorn [Sun, 12 Jan 2014 22:34:21 +0000 (17:34 -0500)]
spapr_vscsi: Fix REPORT_LUNS handling
Intercept REPORT_LUNS commands addressed either to SRP LUN 0 or the well-known
LUN for REPORT_LUNS commands. This is required to implement the SAM and SPC
specifications.
Since SRP implements only a single SCSI target port per connection, the SRP
target is required to report all available LUNs in response to a REPORT_LUNS
command addressed either to LUN 0 or the well-known LUN. Instead, QEMU was
forwarding such requests to the first QEMU SCSI target, with the result that
initiators that relied on this feature would only see LUNs on the first QEMU
SCSI target.
Behavior for REPORT_LUNS commands addressed to any other LUN is not specified
by the standard and so is left unchanged. This preserves behavior under Linux
and SLOF, which enumerate possible LUNs by hand and so address no commands
either to LUN 0 or the well-known REPORT_LUNS LUN.
Recent changes introduced cannot_instantiate_with_device_add_yet
and removed capability of adding yet another PCI host bridge via
command line for SPAPR platform (POWERPC64 server).
This brings the capability back and puts SPAPR PHB into "bridge"
category.
This is not much use for emulated PHB but it is absolutely required
for VFIO as we put an IOMMU group onto a separate PHB on SPAPR.
commit f80872e21c07edd06eb343eeeefc8af404b518a6 (mmu-hash64: Implement
Virtual Page Class Key Protection) added a new page protection
mechanism based on page keys and the AMR register to control access.
The AMR register allows or prohibits reads and/or writes on a page
depending on the control bits associated to the key. A store or a load
is only permitted if the associate bit is 0 (Power ISA), and not 1 as
the code is currently doing. This patch modifies ppc_hash64_amr_prot()
to correct the protection check.
This issue was unvailed by commit ccfb53ed6360cac0d5f6f7915ca9ae7eed866412
(target-ppc: fix Authority Mask Register init value) which changed the
initialisation value of the AMR register to 0.
target-ppc: fix Authority Mask Register init value
The existing default value (-1) of the AMR register forbids data access
to all 32 classes. Since the guest linux does not change this register,
we end up with the guest hanging right after switching from the real to
protected mode.
This sets the default AMR value to zero what enables data access for all
classes.
The only reason for not hitting this bug before is that
kvm_arch_put_registers() did not put any SPR to KVM due to missing
assignment of @one_reg_id in _spr_register() (which is going to be fixed
by a separate patch).
Anton Blanchard [Tue, 24 Dec 2013 01:17:24 +0000 (12:17 +1100)]
target-ppc: dump DAR and DSISR
The DAR and DSISR can be very useful when debugging issues, so add
them to ppc_cpu_dump_state. We had another bug in this area: all
of the v2.06 MMU types were missing.
Targets like ppc64 support different types of KVM, one which use
hypervisor mode and the other which doesn't. Add a new machine
option kvm-type that helps in selecting the respective ones
We also add a new QEMUMachine callback get_vm_type that helps
in mapping the string representation of kvm type specified.
Signed-off-by: Aneesh Kumar K.V <[email protected]>
[agraf: spelling fixes, use error_report(), use qemumachine.h] Signed-off-by: Alexander Graf <[email protected]>
Alexander Graf [Mon, 27 Jan 2014 17:22:10 +0000 (18:22 +0100)]
KVM: Split QEMUMachine typedef into separate header
Older gcc versions (such as the one in SLES11) get confused when you declare
a typedef on the same struct twice.
To work around that limitation, let's extract the QEMUMachine typedef into a
separate header file that is guarded by preprocessor duplicate include checks.
This fixes the following type of compile errors for me:
In file included from vl.c:125:
include/hw/xen/xen.h:39: error: redefinition of typedef "QEMUMachine"
include/sysemu/kvm.h:155: error: previous declaration of "QEMUMachine" was here
target-ppc: remove unsupported SPRs from 970 and P5+
SPR_750FX_HID2 and L2CR are not defined in 970* user manuals nor POWER5
bookIV nor PowerISA 2.04, the numbers assigned to them are not defined
either so remove them.
The 970GX definition was added in 2007 and it made sense then but this
version has never been released to the markets and it does not exist in
the real world so there is no point in emulating it.
target-ppc: fix compile error when PPC_DUMP_CPU is enabled
Since last use of PPC_DUMP_CPU by whoever he/she was, env->tlb became
a union and POWERPC CPU class got QOM'ed so defining PPC_DUMP_CPU
breaks compile.
Peter Maydell [Tue, 4 Mar 2014 18:12:01 +0000 (18:12 +0000)]
Merge remote-tracking branch 'remotes/mjt/tags/trivial-patches-2014-03-04' into staging
trivial patches for 2014-03-04
# gpg: Signature made Tue 04 Mar 2014 06:13:56 GMT using RSA key ID 74F0C838
# gpg: Good signature from "Michael Tokarev <[email protected]>"
# gpg: aka "Michael Tokarev <[email protected]>"
# gpg: aka "Michael Tokarev <[email protected]>"
# 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: 6EE1 95D1 886E 8FFB 810D 4324 457C E0A0 8044 65C5
# Subkey fingerprint: E190 8639 3B10 B51B AC2C 8B73 5253 C5AD 74F0 C838
* remotes/mjt/tags/trivial-patches-2014-03-04:
vl: Remove unneeded include file
qga: Remove unneeded include file
qemu-img: Remove unneeded include files
exec: Remove unneeded include files
util/iov: Use qemu/sockets.h instead of conditional code
qjson.h: Remove spurious GCC_FMT_ATTR markup from qobject_from_json() declaration
tests/test-int128: Don't use __noclone__ attribute on clang
stubs: Optimize dependencies for gdbstub.c
tcg: Fix typo in comment (dependancies -> dependencies)
bswap: Modify prototypes of st[wl]_{le, be}_p (avoid type conversions)
bswap: Modify prototype of stb_p (avoid type conversions)
object: Report type in error when not user creatable.
include/qemu/host-utils.h: Trivial typo: ctz->cto
Peter Maydell [Tue, 4 Mar 2014 17:01:07 +0000 (17:01 +0000)]
Merge remote-tracking branch 'remotes/qmp-unstable/queue/qmp' into staging
* remotes/qmp-unstable/queue/qmp: (32 commits)
qapi: Add missing null check to opts_start_struct()
qapi: Clean up superfluous null check in qapi_dealloc_type_str()
qapi: Clean up null checking in generated visitors
qapi: Drop unused code in qapi-commands.py
qapi: Drop nonsensical header guard in generated qapi-visit.c
qapi: Fix licensing of scripts
tests/qapi-schema: Cover flat union types
tests/qapi-schema: Cover union types with base
tests/qapi-schema: Cover complex types with base
tests/qapi-schema: Cover anonymous union types
tests/qapi-schema: Cover simple argument types
tests/qapi-schema: Cover optional command arguments
tests/qapi-schema: Actually check successful QMP command response
monitor: Remove left-over code in do_info_profile.
qerror: Improve QERR_DEVICE_NOT_ACTIVE message
qmp: Check for returned data from __json_read in get_events
dump: add 'query-dump-guest-memory-capability' command
Define the architecture for compressed dump format
dump: make kdump-compressed format available for 'dump-guest-memory'
dump: add API to write dump pages
...
Peter Maydell [Tue, 4 Mar 2014 16:33:25 +0000 (16:33 +0000)]
Merge remote-tracking branch 'remotes/stefanha/tags/block-pull-request' into staging
Block pull request
# gpg: Signature made Fri 28 Feb 2014 18:27:24 GMT using RSA key ID 81AB73C8
# gpg: Good signature from "Stefan Hajnoczi <[email protected]>"
# gpg: aka "Stefan Hajnoczi <[email protected]>"
# 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: 8695 A8BF D3F9 7CDA AC35 775A 9CA4 ABB3 81AB 73C8
* remotes/stefanha/tags/block-pull-request:
block/vmdk: do not report file offset for compressed extents
discard rbd error output when not relevant in qemu-iotests
block: use /var/tmp instead of /tmp for -snapshot
qemu-io-test: Disable Quorum test when not compiled in.
qmp: Make Quorum error events more palatable.
qmp: Fix BlockdevOptionQuorum.
block: gluster - add reopen support.
block: gluster - code movements, state storage changes
qemu-iotests: add more tests to the "quick" group
Peter Maydell [Tue, 4 Mar 2014 14:50:46 +0000 (14:50 +0000)]
Merge remote-tracking branch 'remotes/borntraeger/tags/kvm-s390-20140227' into staging
Several features, fixes and cleanups for kvm/s390:
- sclp event facility: cleanup structure. This allows to use
realize/unrealize as well as migration support via vmsd
- reboot: Two fixes that make reboot much more reliable
- ipl: make elf loading more robust
- flic interrupt controller: This allows to migrate floating
interrupts, as well as clear them on reset etc.
- enable async_pf feature of KVM on s390
- several sclp fixes and cleanups
- several sigp fixes and cleanups
* remotes/borntraeger/tags/kvm-s390-20140227: (22 commits)
s390x/ipl: Fix crash of ELF images with arbitrary entry points
s390x/kvm: Rework priv instruction handlers
s390x/kvm: Add missing SIGP CPU RESET order
s390x/kvm: Rework SIGP INITIAL CPU RESET handler
s390x/cpu: Use ioctl to reset state in the kernel
s390-ccw.img: new binary rom to match latest fixes
s390-ccw.img: Fix sporadic errors with ccw boot image - initialize css
s390-ccw.img: Fix sporadic reboot hangs: Initialize next_idx
s390x/event-facility: exploit realize/unrealize
s390x/event-facility: add support for live migration
s390x/event-facility: code restructure
s390x/event-facility: some renaming
s390x/sclp: Fixed setting of condition code register
s390x/sclp: Add missing checks to SCLP handler
s390x/sclp: Fixed the size of sccb and code parameter
s390x/eventfacility: mask out commands
s390x/virtio-hcall: Specification exception for illegal subcodes
s390x/virtio-hcall: Add range check for hypervisor call
s390x/kvm: Fixed bad SIGP SET-ARCHITECTURE handler
s390x/async_pf: Check for apf extension and enable pfault
...
Peter Maydell [Tue, 4 Mar 2014 14:25:34 +0000 (14:25 +0000)]
Merge remote-tracking branch 'remotes/bonzini/scsi-next' into staging
* remotes/bonzini/scsi-next:
block/iscsi: fix segfault if writesame fails
scsi-disk: Add support for port WWN and index descriptors in VPD page 83h
block/iscsi: query for supported VPD pages
block/iscsi: fix deadlock on scsi check condition
scsi-bus: Fix transfer length for VERIFY with BYTCHK=11b
scsi: report thin provisioning errors with werror=report
scsi: Change scsi sense buf size to 252
Peter Maydell [Tue, 4 Mar 2014 13:09:06 +0000 (13:09 +0000)]
Merge remote-tracking branch 'remotes/mcayland/qemu-sparc' into staging
* remotes/mcayland/qemu-sparc:
sun4m: Add Sun CG3 framebuffer initialisation function
sun4m: Add Sun CG3 framebuffer and corresponding OpenBIOS FCode ROM
sun4m: fix slavio timer RUN/STOP bit
sun4m: Set HostID in NVRAM
qapi: Clean up null checking in generated visitors
Visitors get passed a pointer to the visited object. The generated
visitors try to cope with this pointer being null in some places, for
instance like this:
# This work is licensed under the terms of the GNU GPLv2.
# See the COPYING.LIB file in the top-level directory.
The sentences contradict each other, as COPYING.LIB contains the LGPL
2.1. Michael Roth says this was a simple pasto, and he meant to refer
COPYING. Let's fix that.
Peter Maydell [Wed, 26 Feb 2014 23:51:46 +0000 (23:51 +0000)]
qjson.h: Remove spurious GCC_FMT_ATTR markup from qobject_from_json() declaration
The function qobject_from_json() doesn't actually allow its
argument to be a format string -- it passes a NULL va_list*
to qobject_from_jsonv(), and the parser code will then never
actually interpret %-escape sequences (it tests whether the
va_list pointer is NULL and will stop with a parse error).
The spurious attribute markup causes clang warnings in some
of the test cases where we programmatically construct JSON
to feed to qobject_from_json():
tests/test-qmp-input-visitor.c:76:35: warning: format string is not a
string literal (potentially insecure) [-Wformat-security]
data->obj = qobject_from_json(json_string);
^~~~~~~~~~~
Peter Maydell [Wed, 26 Feb 2014 23:39:46 +0000 (23:39 +0000)]
tests/test-int128: Don't use __noclone__ attribute on clang
clang doesn't support the __noclone__ attribute and emits a warning about
it. Fortunately clang also implements a mechanism for asking if a particular
attribute is implemented; use it. We assume that if the compiler doesn't
support __has_attribute() then it must be GCC and must support __noclone__.
Stefan Weil [Thu, 20 Feb 2014 19:08:31 +0000 (20:08 +0100)]
stubs: Optimize dependencies for gdbstub.c
It does not need qemu-common.h. Including exec/gdbstub.h fixes a warning
from static code analyzers and avoids mismatching declarations for
xml_builtin.
Stefan Weil [Wed, 19 Feb 2014 05:11:45 +0000 (06:11 +0100)]
bswap: Modify prototypes of st[wl]_{le, be}_p (avoid type conversions)
The functions use uint16_t or uint32_t values, so show this in the function
prototypes. Non-optimizing compilers will avoid unnecessary type
conversions when generating calls of these inline functions.
stq_le_p, stq_be_p already use similar prototypes.
Stefan Weil [Wed, 19 Feb 2014 05:11:44 +0000 (06:11 +0100)]
bswap: Modify prototype of stb_p (avoid type conversions)
The function uses an uint8_t value, so show this in the function
prototype. Non-optimizing compilers will avoid unnecessary type
conversions from (u)int8_t to int and back to uint8_t when generating
calls of this inline function.
stw_p, stl_p and stq_p already use similar prototypes.
Fam Zheng [Mon, 24 Feb 2014 05:45:01 +0000 (13:45 +0800)]
qmp: Check for returned data from __json_read in get_events
When QEMU process aborts and socket is closed, qmp client will not
detect it. When this happens, some qemu-iotests scripts will enter an
endless loop waiting for qmp events.
It's better we raise an exception in qmp.py to catch this and make the
test script stop.
Loic Dachary [Wed, 8 Jan 2014 20:05:38 +0000 (21:05 +0100)]
discard rbd error output when not relevant in qemu-iotests
Suppress rbd progress messages with --no-progress so they are not
confused with an error output when comparing test results ( progress is
displayed on stderr ).
Amit Shah [Wed, 26 Feb 2014 09:42:37 +0000 (15:12 +0530)]
block: use /var/tmp instead of /tmp for -snapshot
If TMPDIR is not specified, the default was to use /tmp for the working
copy of the block devices. Update this to /var/tmp instead, so systems
using tmp-on-tmpfs don't end up inadvertently using RAM for the block
device.
Jeff Cody [Mon, 17 Feb 2014 16:11:12 +0000 (11:11 -0500)]
block: gluster - add reopen support.
Gluster does parse open flags in its .bdrv_open() implementation,
and the .bdrv_reopen_* implementations need to do the same.
A new gluster connection to the image file to be created is established
in the .bdrv_reopen_prepare(), and the image file opened with the new
flags.
If this is successful, then the old image file is closed, and the
old connection torn down. The relevant structure pointers in the gluster
state structure are updated to the new connection.
If it is not successful, then the new file handle and connection is
abandoned (if it exists), while the old connection is not modified at
all.
With reopen supported, block-commit (and offline commit) is now also
supported for image files whose base image uses the native gluster
protocol driver.
qiaonuohan [Tue, 18 Feb 2014 06:11:36 +0000 (14:11 +0800)]
dump: make kdump-compressed format available for 'dump-guest-memory'
Make monitor command 'dump-guest-memory' be able to dump in kdump-compressed
format. The command's usage:
dump [-p] protocol [begin] [length] [format]
'format' is used to specified the format of vmcore and can be:
1. 'elf': ELF format, without compression
2. 'kdump-zlib': kdump-compressed format, with zlib-compressed
3. 'kdump-lzo': kdump-compressed format, with lzo-compressed
4. 'kdump-snappy': kdump-compressed format, with snappy-compressed
Without 'format' being set, it is same as 'elf'. And if non-elf format is
specified, paging and filter is not allowed.
Note:
1. The kdump-compressed format is readable only with the crash utility and
makedumpfile, and it can be smaller than the ELF format because of the
compression support.
2. The kdump-compressed format is the 6th edition.
qiaonuohan [Tue, 18 Feb 2014 06:11:35 +0000 (14:11 +0800)]
dump: add API to write dump pages
functions are used to write page to vmcore. vmcore is written page by page.
page desc is used to store the information of a page, including a page's size,
offset, compression format, etc.
qiaonuohan [Tue, 18 Feb 2014 06:11:34 +0000 (14:11 +0800)]
dump: add APIs to operate DataCache
DataCache is used to store data temporarily, then the data will be written to
vmcore. These functions will be called later when writing data of page to
vmcore.
qiaonuohan [Tue, 18 Feb 2014 06:11:33 +0000 (14:11 +0800)]
dump: add API to write dump_bitmap
functions are used to write 1st and 2nd dump_bitmap of kdump-compressed format,
which is used to indicate whether the corresponded page is existed in vmcore.
1st and 2nd dump_bitmap are same, because dump level is specified to 1 here.
qiaonuohan [Tue, 18 Feb 2014 06:11:32 +0000 (14:11 +0800)]
dump: add API to write dump header
the functions are used to write header of kdump-compressed format to vmcore.
Header of kdump-compressed format includes:
1. common header: DiskDumpHeader32 / DiskDumpHeader64
2. sub header: KdumpSubHeader32 / KdumpSubHeader64
3. extra information: only elf notes here
qiaonuohan [Tue, 18 Feb 2014 06:11:31 +0000 (14:11 +0800)]
dump: add members to DumpState and init some of them
add some members to DumpState that will be used in writing vmcore in
kdump-compressed format. some of them, like page_size, will be initialized
in the patch.
qiaonuohan [Tue, 18 Feb 2014 06:11:30 +0000 (14:11 +0800)]
dump: add support for lzo/snappy
kdump-compressed format supports three compression format, zlib/lzo/snappy.
Currently, only zlib is available. This patch is used to support lzo/snappy.
'--enable-lzo/--enable-snappy' is needed to be specified with configure to make
lzo/snappy available for qemu
qiaonuohan [Tue, 18 Feb 2014 06:11:29 +0000 (14:11 +0800)]
dump: add API to write elf notes to buffer
the function can be used by write_elf32_notes/write_elf64_notes to write notes
to a buffer. If fd_write_vmcore is used, write_elf32_notes/write_elf64_notes
will write elf notes to vmcore directly. Instead, if buf_write_note is used,
elf notes will be written to opaque->note_buf at first.
qiaonuohan [Tue, 18 Feb 2014 06:11:28 +0000 (14:11 +0800)]
dump: add API to write vmcore
Function is used to write vmcore in flatten format. In flatten format, data is
written block by block, and in front of each block, a struct
MakedumpfileDataHeader is stored there to indicate the offset and size of the
data block.
qiaonuohan [Tue, 18 Feb 2014 06:11:27 +0000 (14:11 +0800)]
dump: add API to write header of flatten format
flatten format will be used when writing kdump-compressed format. The format is
also used by makedumpfile, you can refer to the following URL to get more
detailed information about flatten format of kdump-compressed format:
http://sourceforge.net/projects/makedumpfile/
The two functions here are used to write start flat header and end flat header
to vmcore, and they will be called later when flatten format is used.
struct MakedumpfileHeader stored at the head of vmcore is used to indicate the
vmcore is in flatten format.
qiaonuohan [Tue, 18 Feb 2014 06:11:26 +0000 (14:11 +0800)]
dump: add argument to write_elfxx_notes
write_elf32_notes/wirte_elf64_notes use fd_write_vmcore to write elf notes to
vmcore. Adding parameter "WriteCoreDumpFunction f" makes it available to choose
the method of writing elf notes
qiaonuohan [Tue, 18 Feb 2014 06:11:25 +0000 (14:11 +0800)]
dump: const-qualify the buf of WriteCoreDumpFunction
WriteCoreDumpFunction is a function pointer that points to the function used to
write content in "buf" into core file, so "buf" should be const-qualify.
Luiz Capitulino [Tue, 18 Feb 2014 14:08:14 +0000 (09:08 -0500)]
MAINTAINERS: update status for HMP, QAPI and QMP trees
This commit updates the status for the HMP, QAPI and QMP trees from
"Supported" to "Maintained".
In practice this means that patch review and pull requests may take
longer. Also, I'll rely more on reviewers such as Eric Blake so that
I'm able to send pull requests regularly.
Fam Zheng [Wed, 12 Feb 2014 03:05:13 +0000 (11:05 +0800)]
QMP: Allow dot separated dict path arguments in qmp-shell
As another convenience to allow using commands that expect a dict as
argument, this patch adds support for foo.bar=value syntax, similar to
command line argument style:
Mark Cave-Ayland [Tue, 15 Oct 2013 20:03:04 +0000 (21:03 +0100)]
sun4m: Add Sun CG3 framebuffer initialisation function
In order to allow the user to choose the framebuffer for sparc-softmmu, add
-vga tcx and -vga cg3 options to the QEMU command line. If no option is
specified, the default TCX framebuffer is used.
Since proprietary FCode ROMs use a resolution of 1152x900, slightly relax the
validation rules to allow both displays to be initiated at the higher
resolution used by these ROMs upon request (OpenBIOS FCode ROMs default to
the normal QEMU sun4m default resolution of 1024x768).
Finally move any fprintf(stderr ...) statements in the areas affected by this
patch over to the new error_report() function.
Thomas Huth [Sat, 8 Feb 2014 11:31:15 +0000 (12:31 +0100)]
s390x/ipl: Fix crash of ELF images with arbitrary entry points
When loading S390 kernels, the current code expects an ELF file with the
start address 0x10000. Other ELF files cause a segmentation fault. To avoid
these crashes, we should get the start address from the ELF file instead
of always using a hard-coded address.
Frank Blaschka [Tue, 11 Feb 2014 07:41:38 +0000 (08:41 +0100)]
s390x/kvm: Rework priv instruction handlers
The current implementation uses the second byte of the instruction
to identify the instruction handler. This is not sufficient to
support instructions not starting with 0xb2. This patch
adds separate handlers for 0xb2, 0xb9 and 0xeb to be able to
support the full instruction set.
Thomas Huth [Fri, 24 Jan 2014 16:18:38 +0000 (17:18 +0100)]
s390x/kvm: Add missing SIGP CPU RESET order
The SIGP order CPU RESET was still missing in the list of our
supported handler. This patch now adds a simple implementation,
by using the cpu_reset() function that is already available in
target-s390x/cpu.c.
Thomas Huth [Fri, 24 Jan 2014 15:39:54 +0000 (16:39 +0100)]
s390x/kvm: Rework SIGP INITIAL CPU RESET handler
The s390_cpu_initial_reset() function had two deficiencies: First, it
used an ioctl for the destination CPU, and this ioctl could block
nearly forever, as long as the destination CPU was running in the SIE
loop. Second, it also cleared the general purpose registers - something
it should not do according to the Principles of Operations.
Since we've already got another function for the initial CPU reset in
cpu.c, we can also use that function instead. And by using run_on_cpu()
for executing this code, we make sure that the destination CPU is
correctly kicked out of kernel mode now.
Thomas Huth [Wed, 12 Feb 2014 08:56:35 +0000 (09:56 +0100)]
s390x/cpu: Use ioctl to reset state in the kernel
Some of the state in the kernel can not be reset from QEMU yet.
For this we've got to use the KVM_S390_INITIAL_RESET ioctl to make
sure that the state in the kernel is set to the right values during
initial CPU reset, too.
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