This obsoletes ppc-for-2.9-20170112, which had a MacOS build bug.
This is a long overdue ppc pull request for qemu-2.9. It's been a
long time coming due to some holidays and inconveniently timed
problems with testing. So, there's a lot in here:
* More POWER9 instruction implementations for TCG
* The simpler parts of my CPU compatibility mode cleanup
* This changes behaviour to prefer compatibility modes over
"raW" mode for new machine type versions
* New "40p" machine type which is essentially a modernized and
cleaned up "prep". The intention is that it will replace "prep"
once it has some more testing and polish.
* Add pseries-2.9 machine type
* Implement H_SIGNAL_SYS_RESET hypercall
* Consolidate the two alternate CPU init paths in pseries by
making it always go through CPU core objects to initialize CPU
* A number of bugfixes and cleanups
* Stop the guest timebase when the guest is stopped under KVM.
This makes the guest system clock also stop when paused, which
matches the x86 behaviour.
* Some preliminary cleanups leading towards implementation of the
POWER9 MMU.
There are also some changes not strictly related to ppc code, but for
its benefit:
* Limit the pxi-expander-bridge (PXB) device to x86 guests only
(it's essentially a hack to work around historical x86
limitations)
* Some additions to the 128-bit math in host_utils, necessary for
some of the new instructions.
* Revise a number of qtests and enable them for ppc
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2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=vLVl
-----END PGP SIGNATURE-----
Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-2.9-20170202' into staging
ppc patch queue 2017-02-02
This obsoletes ppc-for-2.9-20170112, which had a MacOS build bug.
This is a long overdue ppc pull request for qemu-2.9. It's been a
long time coming due to some holidays and inconveniently timed
problems with testing. So, there's a lot in here:
* More POWER9 instruction implementations for TCG
* The simpler parts of my CPU compatibility mode cleanup
* This changes behaviour to prefer compatibility modes over
"raW" mode for new machine type versions
* New "40p" machine type which is essentially a modernized and
cleaned up "prep". The intention is that it will replace "prep"
once it has some more testing and polish.
* Add pseries-2.9 machine type
* Implement H_SIGNAL_SYS_RESET hypercall
* Consolidate the two alternate CPU init paths in pseries by
making it always go through CPU core objects to initialize CPU
* A number of bugfixes and cleanups
* Stop the guest timebase when the guest is stopped under KVM.
This makes the guest system clock also stop when paused, which
matches the x86 behaviour.
* Some preliminary cleanups leading towards implementation of the
POWER9 MMU.
There are also some changes not strictly related to ppc code, but for
its benefit:
* Limit the pxi-expander-bridge (PXB) device to x86 guests only
(it's essentially a hack to work around historical x86
limitations)
* Some additions to the 128-bit math in host_utils, necessary for
some of the new instructions.
* Revise a number of qtests and enable them for ppc
# gpg: Signature made Thu 02 Feb 2017 01:40:16 GMT
# gpg: using RSA key 0x6C38CACA20D9B392
# gpg: Good signature from "David Gibson <david@gibson.dropbear.id.au>"
# gpg: aka "David Gibson (Red Hat) <dgibson@redhat.com>"
# gpg: aka "David Gibson (ozlabs.org) <dgibson@ozlabs.org>"
# gpg: aka "David Gibson (kernel.org) <dwg@kernel.org>"
# Primary key fingerprint: 75F4 6586 AE61 A66C C44E 87DC 6C38 CACA 20D9 B392
* remotes/dgibson/tags/ppc-for-2.9-20170202: (107 commits)
hw/ppc/pnv: Use error_report instead of hw_error if a ROM file can't be found
ppc/kvm: Handle the "family" CPU via alias instead of registering new types
target/ppc/mmu_hash64: Fix incorrect shift value in amr calculation
target/ppc/mmu_hash64: Fix printing unsigned as signed int
tcg/POWER9: NOOP the cp_abort instruction
target/ppc/debug: Print LPCR register value if register exists
target-ppc: Add xststdc[sp, dp, qp] instructions
target-ppc: Add xvtstdc[sp,dp] instructions
target-ppc: Add MMU model check for booke machines
ppc: switch to constants within BUILD_BUG_ON
target/ppc/cpu-models: Fix/remove bad CPU aliases
target/ppc: Remove unused POWERPC_FAMILY(POWER)
spapr: clock should count only if vm is running
ppc: Remove unused function cpu_ppc601_rtc_init()
target/ppc: Add pcr_supported to POWER9 cpu class definition
powerpc/cpu-models: rename ISAv3.00 logical PVR definition
target-ppc: Add xvcv[hpsp, sphp] instructions
target-ppc: Add xsmulqp instruction
target-ppc: Add xsdivqp instruction
target-ppc: Add xscvsdqp and xscvudqp instructions
...
# Conflicts:
# hw/pci-bridge/Makefile.objs
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Those could probably be squashed with earlier patches, however I
couldn't easily identify them, test them or check if there are still
necessary on various platforms.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
This will help to split char.c in several units without having to
reference them all everywhere. This is useful in particular for tests.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Introduce rules in the top level Makefile that are able to generate
trace.[ch] files in every subdirectory which has a trace-events file.
The top level directory is handled specially, so instead of creating
trace.h, it creates trace-root.h. This allows sub-directories to
include the top level trace-root.h file, without ambiguity wrt to
the trace.g file in the current sub-dir.
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-id: 20170125161417.31949-7-berrange@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
The following commits will split char.c in several files. Let's put them
in a subdirectory.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Implements 128-bit left shift and right shift as well as their
testcases. By design, shift silently mods by 128, so the caller is
responsible to assert the shift range if necessary.
Left shift sets the overflow flag if any non-zero digit is shifted out.
Examples:
ulshift(&low, &high, 250, &overflow);
equivalent: n << 122
urshift(&low, &high, -2);
equivalent: n << 126
Signed-off-by: Jose Ricardo Ziviani <joserz@linux.vnet.ibm.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
[dwg: Added test-shift128 to .gitignore]
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
The test has been converted to use libqos, we can
now use it on ppc64. We also make the test fail on
all other architectures.
As libqos on ppc64 is not able to manage hotplug
and IRQ/MSI, we disable this part in the test on ppc64.
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
[dwg: Make test conditional on CONFIG_EVENTFD]
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Only enable for ppc64 in the Makefile, but added
code in the file to check cirrus card only on architectures
supporting it (alpha, mips, i386, x86_64).
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Tested-by: Greg Kurz <groug@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Tested-by: Greg Kurz <groug@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Pick a uniform chardev type name.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
test.char.exe fails to link:
qemu-char.o: In function `win_chr_free':
/home/elmarco/src/qemu/qemu-char.c:2149: undefined reference to `qemu_del_polling_cb'
/home/elmarco/src/qemu/qemu-char.c:2151: undefined reference to `qemu_del_polling_cb'
qemu-char.o: In function `win_stdio_thread':
/home/elmarco/src/qemu/qemu-char.c:2568: undefined reference to `qemu_del_wait_object'
qemu-char.o: In function `qemu_chr_open_stdio':
/home/elmarco/src/qemu/qemu-char.c:2661: undefined reference to `qemu_add_wait_object'
/home/elmarco/src/qemu/qemu-char.c:2646: undefined reference to
`qemu_add_wait_object'
...
It needs main-loop.o symbols, among others. Linking with
$(test-block-obj-y) brings what's necessary. We could try to eventually
strip to the minimum if needed.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
If a QIOTask has an error set and the calling code uses
qio_task_propagate_error() to steal the reference to
that Error object, the task would not clear its own
reference. This would lead to a double-free when
qio_task_free runs, if the caller had (correctly) freed
the Error object they now owned.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Add calls to hbitmap_is_serializable() (asserting that it returns true)
where necessary (i.e. before every series of (de-)serialization function
invocations).
Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20161115225746.3590-3-mreitz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
cause 9p clients to hang. Other patches are minor enhancements.
-----BEGIN PGP SIGNATURE-----
iEYEABECAAYFAliIegsACgkQAvw66wEB28LjzwCeIKbBFC/hbc43UqaNX82OGd2v
soYAn0YYXJUAykyjNEMLdhhNp+rABzNk
=1PaE
-----END PGP SIGNATURE-----
Merge remote-tracking branch 'remotes/gkurz/tags/for-upstream' into staging
This pull request fixes a 2.9 regression and a long standing bug that can
cause 9p clients to hang. Other patches are minor enhancements.
# gpg: Signature made Wed 25 Jan 2017 10:12:27 GMT
# gpg: using DSA key 0x02FC3AEB0101DBC2
# gpg: Good signature from "Greg Kurz <groug@kaod.org>"
# gpg: aka "Greg Kurz <groug@free.fr>"
# gpg: aka "Greg Kurz <gkurz@fr.ibm.com>"
# gpg: aka "Greg Kurz <gkurz@linux.vnet.ibm.com>"
# gpg: aka "Gregory Kurz (Groug) <groug@free.fr>"
# gpg: aka "Gregory Kurz (Cimai Technology) <gkurz@cimai.com>"
# gpg: aka "Gregory Kurz (Meiosys Technology) <gkurz@meiosys.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: 2BD4 3B44 535E C0A7 9894 DBA2 02FC 3AEB 0101 DBC2
* remotes/gkurz/tags/for-upstream:
9pfs: fix offset error in v9fs_xattr_read()
9pfs: local: trivial cosmetic fix in pwritev op
9pfs: fix off-by-one error in PDU free list
tests: virtio-9p: improve error reporting
9pfs: add missing coroutine_fn annotations
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Add a test for QTAILQ migration to tests/test-vmstate.c.
Signed-off-by: Jianjun Duan <duanj@linux.vnet.ibm.com>
Message-Id: <1484852453-12728-4-git-send-email-duanj@linux.vnet.ibm.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Now that task objects have a directly associated error,
there's no need for an an Error **errp parameter to
the QIOTask thread worker function. It already has a
QIOTask object, so can directly set the error on it.
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Currently the QIOTaskFunc signature takes an Object * for
the source, and an Error * for any error. We also need to
be able to provide a result pointer. Rather than continue
to add parameters to QIOTaskFunc, remove the existing
ones and simply pass the QIOTask object instead. This
has methods to access all the other data items required
in the callback impl.
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Incrementing the reference in qio_task_get_source is
not necessary, since we're not running concurrently
with any other code touching the QIOTask. This
minimizes chances of further memory leaks.
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The Aspeed SMC controllers have a mode (Command mode) in which
accesses to the flash content are no different than doing MMIOs. The
controller generates all the necessary commands to load (or store)
data in memory.
So add a couple of tests doing direct reads and writes on the AHB bus.
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
Message-id: 1483979087-32663-10-git-send-email-clg@kaod.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Let's make sure when each test is run that the flash object is in an
initial state and did not keep configuration from the previous tests.
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-id: 1483979087-32663-9-git-send-email-clg@kaod.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
They are small, it is not worth stubbing them. Just include them
in user-mode emulators and unit tests as well.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
"qom-list-types abstract=false" currently returns all interface
types, as if they were not abstract. Fix this by making sure all
interface types are abstract.
All interface types have instance_size == 0, so we can use
it to set abstract=true on type_initialize().
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <1481567461-2341-1-git-send-email-ehabkost@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
As the name suggests, the qapi2texi script converts JSON QAPI
description into a texi file suitable for different target
formats (info/man/txt/pdf/html...).
It parses the following kind of blocks:
Free-form:
##
# = Section
# == Subsection
#
# Some text foo with *emphasis*
# 1. with a list
# 2. like that
#
# And some code:
# | $ echo foo
# | -> do this
# | <- get that
#
##
Symbol description:
##
# @symbol:
#
# Symbol body ditto ergo sum. Foo bar
# baz ding.
#
# @param1: the frob to frobnicate
# @param2: #optional how hard to frobnicate
#
# Returns: the frobnicated frob.
# If frob isn't frobnicatable, GenericError.
#
# Since: version
# Notes: notes, comments can have
# - itemized list
# - like this
#
# Example:
#
# -> { "execute": "quit" }
# <- { "return": {} }
#
##
That's roughly following the following EBNF grammar:
api_comment = "##\n" comment "##\n"
comment = freeform_comment | symbol_comment
freeform_comment = { "# " text "\n" | "#\n" }
symbol_comment = "# @" name ":\n" { member | tag_section | freeform_comment }
member = "# @" name ':' [ text ] "\n" freeform_comment
tag_section = "# " ( "Returns:", "Since:", "Note:", "Notes:", "Example:", "Examples:" ) [ text ] "\n" freeform_comment
text = free text with markup
Note that the grammar is ambiguous: a line "# @foo:\n" can be parsed
both as freeform_comment and as symbol_comment. The actual parser
recognizes symbol_comment.
See docs/qapi-code-gen.txt for more details.
Deficiencies and limitations:
- the generated QMP documentation includes internal types
- union type support is lacking
- type information is lacking in generated documentation
- doc comment error message positions are imprecise, they point
to the beginning of the comment.
- a few minor issues, all marked TODO/FIXME in the code
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20170113144135.5150-16-marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
[test-qapi.py tweaked to avoid trailing empty lines in .out]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Don't use hardcoded software interrupt masks, use XCHAL macros.
Mask off timer interrupt bits that are not checked for.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Don't expect that CCOUNT increments are equal to the number of executed
instructions. Verify that timer interrupt does not fire before the
programmed CCOMPARE value and does fire after.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Timer tests expect certain determinism in CCOUNT updates and timer
interrupts firing. Run QEMU with -icount to get deterministic results.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Some recently added tests pass a zero length to qtest_memwrite().
Unfortunately, the qtest protocol doesn't implement an on-the-wire
syntax for zero-length writes and the current code happily sends
garbage to QEMU. This causes intermittent failures.
It isn't worth the pain to enhance the protocol, so this patch
simply fixes the issue by "just return, doing nothing". The same
fix is applied to qtest_memread() since the issue also exists in
the QEMU part of the "memread" command.
Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-id: 148412457273.22750.983275587432075569.stgit@bahia
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Add some unit tests for bit count functions (currently only ctpop). As
the routines are based on the Hackers Delight optimisations I based
the test patterns on their tests.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This also adds SRAT and DSDT blobs for memory hotplug variant
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
Here are some bugfixes that didn't make 2.8.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
-----BEGIN PGP SIGNATURE-----
iQEcBAABAgAGBQJYVFkHAAoJECgfDbjSjVRpdc0H/1JMgQn0/J6vjKfeRY7720y8
/Bihf4gjKN2bPtu6pTGY1KQBvK76ShyvZZBFCa5bf8a4V9HP4BgSQ8mQ7ZUURzJJ
OslYbSzK1R2LiWJ40e9xdFOoKWKB3lK1lBF/Xb8QPZPoJ0D50Fo2xpymt4hZFdkF
oSnXxHmYoKMsMmmqJZd3aaqyffFLYGmcm1dbJOxninwu/nBzOBY2SQmmaaacSoGn
3D5988i6OcD1qbavfk4rNCQV4avJA+H7c/FmXH3WarPE8M9/jgnAaUDdknFicUA8
hGwMsLrO/7sMnMYtSQIxWg743LhrAm93HCr2u/TgLzhYbPydmLCpup5eAWj+jvo=
=nN2D
-----END PGP SIGNATURE-----
Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging
virtio, vhost, pc: fixes
Here are some bugfixes that didn't make 2.8.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
# gpg: Signature made Fri 16 Dec 2016 21:13:43 GMT
# gpg: using RSA key 0x281F0DB8D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg: aka "Michael S. Tsirkin <mst@redhat.com>"
# Primary key fingerprint: 0270 606B 6F3C DF3D 0B17 0970 C350 3912 AFBE 8E67
# Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA 8A0D 281F 0DB8 D28D 5469
* remotes/mst/tags/for_upstream:
virtio: avoid using guest_notifier_mask in vhost-user mode
pci: fix error message for express slots
i386: amd_iommu: fix MMIO register count and access
tests/vhost-user-bridge: use contrib/libvhost-user
contrib: add libvhost-user
tests/vhost-user-bridge: do not accept more than one connection
tests/vhost-user-bridge: indicate peer disconnected
tests/vhost-user-bridge: remove unnecessary dispatcher_remove
tests/vhost-user-bridge: remove false comment
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This enables byte granularity requests for blkverify, and at the same
time gets us rid of another user of the BDS-level AIO emulation.
The reference output of a test case must be changed because the
verification failure message reports byte offsets instead of sectors
now.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
The new AioPollFn io_poll() argument to aio_set_fd_handler() and
aio_set_event_handler() is used in the next patch.
Keep this code change separate due to the number of files it touches.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 20161201192652.9509-3-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
According to the 9P spec at http://man.cat-v.org/plan_9/5/intro, the
parent directory of the root directory of a server's tree is itself.
This test hence checks that the qid of the root directory as returned by
attach is the same as the qid of ".." when walking from the root directory.
Signed-off-by: Greg Kurz <groug@kaod.org>
The walk operation is used to traverse the directory tree and to associate
paths to fids. A single walk can be used to traverse up to P9_MAXWELEM path
elements at the same time.
The test creates a path with P9_MAXWELEM elements on the backend (à la
'mkdir -p') and issues a walk operation. The walk is expected to succeed
without error.
Reference:
http://man.cat-v.org/plan_9/5/walk
Signed-off-by: Greg Kurz <groug@kaod.org>
The attach operation is used to establish a connection between the
client and the server. After this, the client is able to access the
underlying filesystem and do I/O.
This test simply ensures the operation succeeds without error.
Reference:
http://man.cat-v.org/plan_9/5/attach
Signed-off-by: Greg Kurz <groug@kaod.org>
This patch lays the foundations to be able to test 9P operations and
provides a test for the version operation as a first example.
A 9P request is composed of a T-message sent by the client (guest) to the
server (QEMU), and a R-message sent by the server back to the client.
The following general calls are available to implement requests for any
9P operations:
v9fs_req_init(): allocates the request structure and the guest memory for
the T-message
v9fs_req_send(): allocates the guest memory for the R-message and sends the
T-message to QEMU
v9fs_req_recv(): waits for QEMU to answer and does some sanity checks on the
returned R-message header
v9fs_req_free(): releases the guest memory and the request structure
Helpers are provided, to be used by each specific 9P operation to copy data
to/from the guest memory.
The version operation is used to negotiate the 9P protocol version to be
used and the maximum buffer size for exchanged data. It is necessarily
the first message of a 9P session. For simplicity, the maximum buffer size
is hardcoded to 4k, which should be enough for functional tests.
The test simply advertises the "9P2000.L" version to QEMU and expects QEMU
to answer it is supported.
References:
http://man.cat-v.org/plan_9/5/introhttp://man.cat-v.org/plan_9/5/version
Signed-off-by: Greg Kurz <groug@kaod.org>
