migration/savevm.c: set MAX_VM_CMD_PACKAGED_SIZE to 1ul << 32
MAX_VM_CMD_PACKAGED_SIZE is a constant used in qemu_savevm_send_packaged
and loadvm_handle_cmd_packaged to determine whether a package is too
big to be sent or received. qemu_savevm_send_packaged is called inside
postcopy_start (migration/migration.c) to send the MigrationState
in a single blob to the destination, using the MIG_CMD_PACKAGED subcommand,
which will read it up using loadvm_handle_cmd_packaged. If the blob is
larger than MAX_VM_CMD_PACKAGED_SIZE, an error is thrown and the postcopy
migration is aborted. Both MAX_VM_CMD_PACKAGED_SIZE and MIG_CMD_PACKAGED
were introduced by commit 11cf1d984b ("MIG_CMD_PACKAGED: Send a packaged
chunk ..."). The constant has its original value of 1ul << 24 (16MB).
The current MAX_VM_CMD_PACKAGED_SIZE value is not enough to support postcopy
migration of bigger pseries guests. The blob size for a postcopy migration of
a pseries guest with the following setup:
Goes around 12MB. Bumping the RAM to 128G makes the blob sizes goes to 20MB.
With 256G the blob goes to 37MB - more than twice the current maximum size.
At this moment the pseries machine can handle guests with up to 1TB of RAM,
making this postcopy blob goes to 128MB of size approximately.
Following the discussions made in [1], there is a need to understand what
devices are aggressively consuming the blob in that manner and see if that
can be mitigated. Until then, we can set MAX_VM_CMD_PACKAGED_SIZE to the
maximum value allowed. Since the size is a 32 bit int variable, we can set
it as 1ul << 32, giving a maximum blob size of 4G that is enough to support
postcopy migration of 32TB RAM guests given the above constraints.
migration: Allow migrate_fd_connect to take an Error *
Allow whatever is performing the connection to pass migrate_fd_connect
an error to indicate there was a problem during connection, an allow
us to clean up.
Currently travis declares ancient python 2.4 is desired. Update that to
2.6 which is the oldest version any targetted distros still needs. If we
just list a python 3 version at the top level this will double the
number of travis jobs we run which is unreasonable.
So arbitrarily pick the clang test matrix entries to build with python
3.0 and 3.6, to extend coverage of python versions, without increasing
job count or build time.
Amador Pahim [Mon, 22 Jan 2018 20:50:33 +0000 (21:50 +0100)]
qemu.py: don't launch again before shutdown()
If a VM is launched, files are created and a cleanup is required before
a new launch. This cleanup is executed by shutdown(), so shutdown() must
be called even if the VM is manually terminated (i.e. using kill).
This patch creates a control to make sure launch() will not be executed
again if shutdown() is not called after the previous launch().
Amador Pahim [Mon, 22 Jan 2018 20:50:32 +0000 (21:50 +0100)]
qemu.py: cleanup redundant calls in launch()
Now that shutdown() is guaranteed to always execute self._load_io_log()
and self._post_shutdown(), their calls in 'except' became redundant and
we can safely replace it by a call to shutdown().
Amador Pahim [Mon, 22 Jan 2018 20:50:30 +0000 (21:50 +0100)]
qemu.py: always cleanup on shutdown()
Currently we only cleanup on shutdown() if the VM is running.
To make sure we will always cleanup, this patch makes the
self._load_io_log() and the self._post_shutdown() to
always be called on shutdown(), regardless the VM running state.
Amador Pahim [Mon, 22 Jan 2018 20:50:29 +0000 (21:50 +0100)]
qemu.py: refactor launch()
This is just a refactor to separate the exception handler from the
actual launch procedure, improving the readability and making future
maintenances in this piece of code easier.
Amador Pahim [Mon, 22 Jan 2018 20:50:28 +0000 (21:50 +0100)]
qemu.py: better control of created files
To launch a VM, we need to create basically two files: the monitor
socket (if it's a UNIX socket) and the qemu log file.
For the qemu log file, we currently just open the path, which will
create the file if it does not exist or overwrite the file if it does
exist.
For the monitor socket, if it already exists, we are currently removing
it, even if it's not created by us.
This patch moves to _pre_launch() the responsibility to create a
temporary directory to host the files so we can remove the whole
directory on _post_shutdown().
Python2 did not validate locale correctness when reading input data, so
would happily read UTF-8 data in non-UTF-8 locales. Python3 is strict so
if you try to read UTF-8 data in the C locale, it will raise an error
for any UTF-8 bytes that aren't representable in 7-bit ascii encoding.
e.g.
UnicodeDecodeError: 'ascii' codec can't decode byte 0xc3 in position 54: ordinal not in range(128)
Traceback (most recent call last):
File "/tmp/qemu-test/src/scripts/qapi-commands.py", line 317, in <module>
schema = QAPISchema(input_file)
File "/tmp/qemu-test/src/scripts/qapi.py", line 1468, in __init__
parser = QAPISchemaParser(open(fname, 'r'))
File "/tmp/qemu-test/src/scripts/qapi.py", line 301, in __init__
previously_included)
File "/tmp/qemu-test/src/scripts/qapi.py", line 348, in _include
exprs_include = QAPISchemaParser(fobj, previously_included, info)
File "/tmp/qemu-test/src/scripts/qapi.py", line 271, in __init__
self.src = fp.read()
File "/usr/lib64/python3.5/encodings/ascii.py", line 26, in decode
return codecs.ascii_decode(input, self.errors)[0]
More background on this can be seen in
https://www.python.org/dev/peps/pep-0538/
Many distros support a new C.UTF-8 locale that is like the C locale,
but with UTF-8 instead of 7-bit ASCII. That is not entirely portable
though. This patch thus sets the LANG to "C", but overrides LC_CTYPE
to be en_US.UTF-8 locale. This gets us pretty close to C.UTF-8, but
in a way that should be portable to everywhere QEMU builds.
This patch only forces UTF-8 for QAPI scripts, since that is the one
showing the immediate error under Python3 with C locale, but potentially
we ought to force this for all python scripts used in the build process.
qapi: ensure stable sort ordering when checking QAPI entities
Some early python 3.x versions will have different default
ordering when calling the 'values()' method on a dict, compared
to python 2.x and later 3.x versions. Explicitly sort the items
to get a stable ordering.
qapi: remove '-q' arg to diff when comparing QAPI output
When the qapi schema tests fail they merely print that the expected
output didn't match the actual output. This is largely useless when
trying diagnose what went wrong. Removing the '-q' arg to diff
means that it is still silent on successful tests, but when it
fails we'll see details of the incorrect output.
qapi: use items()/values() intead of iteritems()/itervalues()
The iteritems()/itervalues() methods are gone in py3, but the
items()/values() methods are still around. The latter are less
efficient than the former in py2, but this has unmeasurably
small impact on QEMU build time, so taking portability over
efficiency is a net win.
qapi: convert to use python print function instead of statement
Python 3 no longer supports the bare "print" statement, it must be
called as a normal function with round brackets. It is possible to
opt-in to this new syntax with Python 2.6 onwards by importing the
"print_function" from the "__future__" module, making it easy to
support Python 2 and 3 in parallel.
gcc 5.4.0-6ubuntu1~16.04.5 build with UBSAN enabled error:
CC hw/display/exynos4210_fimd.o
/home/petmay01/linaro/qemu-for-merges/hw/display/exynos4210_fimd.c: In
function ‘fimd_get_buffer_id’:
/home/petmay01/linaro/qemu-for-merges/hw/display/exynos4210_fimd.c:1105:5:
error: case label does not reduce to an integer constant
case FIMD_WINCON_BUF2_STAT:
Because FIMD_WINCON_BUF2_STAT case contains an integer
overflow, use U suffix to get the unsigned type.
sockets: fix parsing of ipv4/ipv6 opts in parse_socket_addr
The inet_parse() function looks for 'ipv4' and 'ipv6' flags, but only
treats them as bare bool flags. The normal QemuOpts parsing would allow
on/off values to be set too.
This updates inet_parse() so that its handling of the 'ipv4' and 'ipv6'
flags matches that done by QemuOpts.
This impacts the NBD block driver parsing the legacy filename syntax and
the migration code parsing the socket scheme.
Peter Maydell [Thu, 25 Jan 2018 16:19:49 +0000 (16:19 +0000)]
Drop remaining bits of ia64 host support
We dropped support for ia64 host CPUs in the 2.11 release (removing
the TCG backend for it, and advertising the support as being
completely removed in the changelog). However there are a few bits
and pieces of code still floating about. Remove those, too.
We can drop the check in configure for "ia64 or hppa host?"
entirely, because we don't support hppa hosts either any more.
Thomas Huth [Mon, 22 Jan 2018 15:27:33 +0000 (16:27 +0100)]
i2c: Add a CONFIG_I2C master switch to the configuration files
The i2c core and the at24c EEPROM should only be compiled and linked
on the machines that support i2c. Otherwise it's quite strange to see
the at24c-eeprom to be "available" on qemu-system-s390x for example.
Peter Maydell [Tue, 21 Nov 2017 15:08:08 +0000 (15:08 +0000)]
memory-internal.h: Remove obsolete claim that header is obsolete
The memory-internal.h header claims that it is for "obsolete
exec.c functions" which "will be removed soon". This statement
was added in 2011, six years ago, but the header is still here.
(Admittedly none of the prototypes added in commit 67d95c153bef55f6
are still in the header.)
It's convenient to have a place to put prototypes for functions
which are used internally to the various .c files of the memory
system or by the accel/tcg code, which is inevitably fairly
closely coupled. So keep the header but update the comments to
reflect what we're actually using it for.
Greg Kurz [Thu, 18 Jan 2018 17:11:37 +0000 (18:11 +0100)]
scripts/qemu-gdb/timers.py: define encoding in header comment
This is required otherwise python complains because of the
accentuated letter in Alex's last name:
Traceback (most recent call last):
File "scripts/qemu-gdb.py", line 29, in <module>
from qemugdb import aio, mtree, coroutine, tcg, timers
File "scripts/qemugdb/timers.py", line 1
SyntaxError: Non-ASCII character '\xc3' in file scripts/qemugdb/timers.py
on line 1, but no encoding declared;
see http://www.python.org/peps/pep-0263.html for details
Greg Kurz [Thu, 18 Jan 2018 10:41:03 +0000 (11:41 +0100)]
readline: don't free completions in readline_free()
Since commit e5dc1a6c6c43, QEMU aborts on exit if completion was used
in the monitor:
*** Error in `obj/ppc64-softmmu/qemu-system-ppc64': double free or
corruption (fasttop): 0x00000100331069d0 ***
/home/greg/Work/qemu/qemu-spapr/util/readline.c:514
/home/greg/Work/qemu/qemu-spapr/monitor.c:586
/home/greg/Work/qemu/qemu-spapr/monitor.c:4125
argv=<optimized out>, envp=<optimized out>) at
/home/greg/Work/qemu/qemu-spapr/vl.c:4795
Completion strings are not persistent accross completions (why would
they?). They are allocated under readline_completion(), which already
takes care of freeing them before returning.
Maybe all completion related bits should be moved out of ReadLineState
to a dedicated structure ?
In the meantime, let's drop the offending lines from readline_free()
to fix the crash.
Fam Zheng [Thu, 18 Jan 2018 02:52:45 +0000 (10:52 +0800)]
scsi-generic: Simplify error handling code
Coverity doesn't like the ignored return value introduced in 9d3b155186c278 (hw/block: Fix the return type), and other callers are
converted already in ceff3e1f01.
This one was added lately in d9bcd6f7f23a and missed the train. Do it
now.
This adds a tracepoint to trace the KVM_SET_USER_MEMORY_REGION ioctl
parameters which is quite useful for debugging VFIO memory regions
being actually registered with KVM.
qdev: add helpers to be more explicit when using abstract QOM parent functions
QOM API learning curve is quite hard, in particular when devices inherit from
abstract parent.
To be more explicit about when a device class change the parent hooks, add few
helpers hoping a device class_init() will be easier to understand.
Peter Maydell [Mon, 5 Feb 2018 09:31:37 +0000 (09:31 +0000)]
Merge remote-tracking branch 'remotes/stefanberger/tags/pull-tpm-2018-02-03-1' into staging
Merge tpm 2018/02/03 v1
# gpg: Signature made Sat 03 Feb 2018 14:02:35 GMT
# gpg: using RSA key 75AD65802A0B4211
# gpg: Good signature from "Stefan Berger <[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: B818 B9CA DF90 89C2 D5CE C66B 75AD 6580 2A0B 4211
* remotes/stefanberger/tags/pull-tpm-2018-02-03-1:
tpm: tis: move one-line function into caller
MAINTAINERS: add pointer to tpm-next repository
tpm: wrap stX_be_p in tpm_cmd_set_XYZ functions
tpm: Split off tpm_crb_reset function
* remotes/kraxel/tags/ui-20180202-pull-request:
ui: correctly advance output buffer when writing SASL data
ui: convert VNC server to QIONetListener
ui: fix mixup between qnum and qcode in SDL1 key handling
Peter Maydell [Fri, 2 Feb 2018 16:26:41 +0000 (16:26 +0000)]
Merge remote-tracking branch 'remotes/gkurz/tags/for-upstream' into staging
This series is mostly about 9p request cancellation. It fixes a
long standing bug (read "specification violation") where the server
would send an invalid response when the client has cancelled an
in-flight request. This was causing annoying spurious EINTR returns
in linux. The fix comes with some related testing in QTEST.
Other patches are code cleanup and improvements.
# gpg: Signature made Fri 02 Feb 2018 10:16:03 GMT
# gpg: using RSA key 71D4D5E5822F73D6
# gpg: Good signature from "Greg Kurz <[email protected]>"
# gpg: aka "Gregory Kurz <[email protected]>"
# gpg: aka "[jpeg image of size 3330]"
# Primary key fingerprint: B482 8BAF 9431 40CE F2A3 4910 71D4 D5E5 822F 73D6
* remotes/gkurz/tags/for-upstream:
tests/virtio-9p: explicitly handle potential integer overflows
tests: virtio-9p: add FLUSH operation test
libqos/virtio: return length written into used descriptor
tests: virtio-9p: add WRITE operation test
tests: virtio-9p: add LOPEN operation test
tests: virtio-9p: use the synth backend
tests: virtio-9p: wait for completion in the test code
tests: virtio-9p: move request tag to the test functions
9pfs: Correctly handle cancelled requests
9pfs: drop v9fs_register_transport()
* remotes/kraxel/tags/audio-20180202-pull-request:
hw/audio/sb16.c: change dolog() to qemu_log_mask()
hw/audio/wm8750: move WM8750 declarations from i2c/i2c.h to audio/wm8750.h
Peter Maydell [Fri, 2 Feb 2018 14:10:13 +0000 (14:10 +0000)]
Merge remote-tracking branch 'remotes/cminyard/tags/for-release-20180201' into staging
Lots of litte miscellaneous fixes for the IPMI code, plus
add me as the IPMI maintainer.
# gpg: Signature made Thu 01 Feb 2018 18:44:55 GMT
# gpg: using RSA key 61F38C90919BFF81
# gpg: Good signature from "Corey Minyard <[email protected]>"
# gpg: aka "Corey Minyard <[email protected]>"
# gpg: aka "Corey Minyard <[email protected]>"
# gpg: aka "Corey Minyard <[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: FD0D 5CE6 7CE0 F59A 6688 2686 61F3 8C90 919B FF81
* remotes/cminyard/tags/for-release-20180201:
ipmi: Allow BMC device properties to be set
ipmi: disable IRQ and ATN on an external disconnect
ipmi: Fix macro issues
ipmi: Add the platform event message command
ipmi: Don't set the timestamp on add events that don't have it
ipmi: Fix SEL get/set time commands
Add maintainer for the IPMI code
Greg Kurz [Thu, 1 Feb 2018 20:21:28 +0000 (21:21 +0100)]
tests: virtio-9p: add FLUSH operation test
The idea is to send a victim request that will possibly block in the
server and to send a flush request to cancel the victim request.
This patch adds two test to verifiy that:
- the server does not reply to a victim request that was actually
cancelled
- the server replies to the flush request after replying to the
victim request if it could not cancel it
9p request cancellation reference:
http://man.cat-v.org/plan_9/5/flush
Signed-off-by: Greg Kurz <[email protected]> Reviewed-by: Stefan Hajnoczi <[email protected]>
(groug, change the test to only write a single byte to avoid
any alignment or endianess consideration)
Greg Kurz [Thu, 1 Feb 2018 20:21:28 +0000 (21:21 +0100)]
libqos/virtio: return length written into used descriptor
When a 9p request is flushed (ie, cancelled) by the guest, the device
is expected to simply mark the request as used, without sending a 9p
reply (ie, without writing anything into the used buffer).
To be able to test this, we need access to the length written by the
device into the used descriptor. This patch adds a uint32_t * argument
to qvirtqueue_get_buf() and qvirtio_wait_used_elem() for this purpose.
Peter Xu [Wed, 31 Jan 2018 04:04:01 +0000 (12:04 +0800)]
virtio-gpu: disallow vIOMMU
virtio-gpu has special code path that bypassed vIOMMU protection. So
for now let's disable iommu_platform for the device until we fully
support that (if needed).
After the patch, both virtio-vga and virtio-gpu won't allow to boot with
iommu_platform parameter set.
ui: track how much decoded data we consumed when doing SASL encoding
I attempted to fix a flaw with tracking how much data had actually been
processed when encoding with SASL. With that flaw, the VNC server could
mistakenly discard queued data that had not been sent.
The fix was not quite right though, because it merely decremented the
vs->output.offset value. This is effectively discarding data from the
end of the pending output buffer. We actually need to discard data from
the start of the pending output buffer. We also want to free memory that
is no longer required. The correct way to handle this is to use the
buffer_advance() helper method instead of directly manipulating the
offset value.
The VNC server already has the ability to listen on multiple sockets.
Converting it to use the QIONetListener APIs though, will reduce the
amount of code in the VNC server and improve the clarity of what is
left.
ui: convert GTK and SDL1 frontends to keycodemapdb
changed the x_keymap.c keymap so that its target was qcodes instead of
qnums. It updated the GTK frontend to take account of this change, but
forgot to update the SDL1 frontend. Thus the SDL frontend was getting
qcodes but dispatching them as if they were qnums. IOW, keyboard input
was completely hosed with SDL1. Since the keyboard layout tables are
still all based on qnums, it is easier to just keep SDL1 using qnums as
it will be deleted in a few releases time.
Greg Kurz [Thu, 1 Feb 2018 20:21:28 +0000 (21:21 +0100)]
tests: virtio-9p: add WRITE operation test
Trivial test of a successful write.
Signed-off-by: Greg Kurz <[email protected]>
(groug, handle potential overflow when computing request size,
add missing g_free(buf),
backend handles one written byte at a time to validate
the server doesn't do short-reads) Reviewed-by: Stefan Hajnoczi <[email protected]>
Greg Kurz [Thu, 1 Feb 2018 20:21:27 +0000 (21:21 +0100)]
tests: virtio-9p: use the synth backend
The purpose of virtio-9p-test is to test the virtio-9p device, especially
the 9p server state machine. We don't really care what fsdev backend we're
using. Moreover, if we want to be able to test the flush request or a
device reset with in-flights I/O, it is close to impossible to achieve
with a physical backend because we cannot ask it reliably to put an I/O
on hold at a specific point in time.
Fortunately, we can do that with the synthetic backend, which allows to
register callbacks on read/write accesses to a specific file. This will
be used by a later patch to test the 9P flush request.
The walk request test is converted to using the synth backend.
Greg Kurz [Thu, 1 Feb 2018 20:21:27 +0000 (21:21 +0100)]
tests: virtio-9p: wait for completion in the test code
In order to test request cancellation, we will need to send multiple
requests and wait for the associated replies. Since we poll the ISR
to know if a request completed, we may have several replies to parse
when we detect ISR was set to 1.
This patch moves the waiting out of the reply parsing path, up into
the functional tests.
Greg Kurz [Thu, 1 Feb 2018 20:21:27 +0000 (21:21 +0100)]
tests: virtio-9p: move request tag to the test functions
It doesn't really makes sense to hide the request tag from the test
functions. It prevents to test the 9p server behavior when passed
a wrong tag (ie, still in use or different from P9_NOTAG for a
version request). Also the spec says that a tag is reusable as soon
as the corresponding request was replied or flushed: no need to
always increment tags like we do now. And finaly, an upcoming test
of the flush command will need to manipulate tags explicitely.
This simply changes all request functions to have a tag argument.
Except for the version request which needs P9_NOTAG, all other
tests can pass 0 since they wait for the reply before sending
another request.
Keno Fischer [Thu, 1 Feb 2018 20:21:27 +0000 (21:21 +0100)]
9pfs: Correctly handle cancelled requests
# Background
I was investigating spurious non-deterministic EINTR returns from
various 9p file system operations in a Linux guest served from the
qemu 9p server.
## EINTR, ERESTARTSYS and the linux kernel
When a signal arrives that the Linux kernel needs to deliver to user-space
while a given thread is blocked (in the 9p case waiting for a reply to its
request in 9p_client_rpc -> wait_event_interruptible), it asks whatever
driver is currently running to abort its current operation (in the 9p case
causing the submission of a TFLUSH message) and return to user space.
In these situations, the error message reported is generally ERESTARTSYS.
If the userspace processes specified SA_RESTART, this means that the
system call will get restarted upon completion of the signal handler
delivery (assuming the signal handler doesn't modify the process state
in complicated ways not relevant here). If SA_RESTART is not specified,
ERESTARTSYS gets translated to EINTR and user space is expected to handle
the restart itself.
## The 9p TFLUSH command
The 9p TFLUSH commands requests that the server abort an ongoing operation.
The man page [1] specifies:
```
If it recognizes oldtag as the tag of a pending transaction, it should
abort any pending response and discard that tag.
[...]
When the client sends a Tflush, it must wait to receive the corresponding
Rflush before reusing oldtag for subsequent messages. If a response to the
flushed request is received before the Rflush, the client must honor the
response as if it had not been flushed, since the completed request may
signify a state change in the server
```
In particular, this means that the server must not send a reply with the
orignal tag in response to the cancellation request, because the client is
obligated to interpret such a reply as a coincidental reply to the original
request.
# The bug
When qemu receives a TFlush request, it sets the `cancelled` flag on the
relevant pdu. This flag is periodically checked, e.g. in
`v9fs_co_name_to_path`, and if set, the operation is aborted and the error
is set to EINTR. However, the server then violates the spec, by returning
to the client an Rerror response, rather than discarding the message
entirely. As a result, the client is required to assume that said Rerror
response is a result of the original request, not a result of the
cancellation and thus passes the EINTR error back to user space.
This is not the worst thing it could do, however as discussed above, the
correct error code would have been ERESTARTSYS, such that user space
programs with SA_RESTART set get correctly restarted upon completion of
the signal handler.
Instead, such programs get spurious EINTR results that they were not
expecting to handle.
It should be noted that there are plenty of user space programs that do not
set SA_RESTART and do not correctly handle EINTR either. However, that is
then a userspace bug. It should also be noted that this bug has been
mitigated by a recent commit to the Linux kernel [2], which essentially
prevents the kernel from sending Tflush requests unless the process is about
to die (in which case the process likely doesn't care about the response).
Nevertheless, for older kernels and to comply with the spec, I believe this
change is beneficial.
# Implementation
The fix is fairly simple, just skipping notification of a reply if
the pdu was previously cancelled. We do however, also notify the transport
layer that we're doing this, so it can clean up any resources it may be
holding. I also added a new trace event to distinguish
operations that caused an error reply from those that were cancelled.
One complication is that we only omit sending the message on EINTR errors in
order to avoid confusing the rest of the code (which may assume that a
client knows about a fid if it sucessfully passed it off to pud_complete
without checking for cancellation status). This does mean that if the server
acts upon the cancellation flag, it always needs to set err to EINTR. I
believe this is true of the current code.
dump-guest-memory.py: skip vmcoreinfo section if not available
On some architectures, qemu doesn't support vmcoreinfo device,
and dump-guest-memory fails:
(gdb) dump-guest-memory /tmp/vmcore ppc64-le
guest RAM blocks:
target_start target_end host_addr message count
---------------- ---------------- ---------------- ------- ----- 0000000000000000000000020000000000003ffd86980000 added 1 0000200080000000000020008080000000003ffd86170000 added 2
Python Exception <class 'gdb.error'> No symbol "vmcoreinfo_realize" in current context.:
Error occurred in Python command: No symbol "vmcoreinfo_realize" in current context.
Check that vmcoreinfo_realize symbol exists before evaluating an
expression with it.
Max Reitz [Wed, 17 Jan 2018 13:50:15 +0000 (14:50 +0100)]
iotests: Make 200 run on tmpfs
200 currently fails on tmpfs because it sets cache=none. However,
without that (and aio=native), the test still works now and it fails
before Jeff's series (on fc7dbc119e0852a70dc9fa68bb41a318e49e4cd6). So
we can probably remove the aio=native safely, and replace cache=none by
cache=$CACHEMODE.
Peter Maydell [Wed, 31 Jan 2018 15:50:29 +0000 (15:50 +0000)]
Merge remote-tracking branch 'remotes/rth/tags/pull-hppa-20180131' into staging
Implement hppa-softmmu
# gpg: Signature made Wed 31 Jan 2018 14:19:06 GMT
# gpg: using RSA key 0x64DF38E8AF7E215F
# gpg: Good signature from "Richard Henderson <[email protected]>"
# Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A 05C0 64DF 38E8 AF7E 215F
* remotes/rth/tags/pull-hppa-20180131: (43 commits)
target/hppa: Implement PROBE for system mode
target/hppa: Fix 32-bit operand masks for 0E FCVT
hw/hppa: Add MAINTAINERS entry
pc-bios: Add hppa-firmware.img and git submodule
hw/hppa: Implement DINO system board
target/hppa: Enable MTTCG
target/hppa: Implement STWA
target/hppa: Implement a pause instruction
target/hppa: Implement LDSID for system mode
target/hppa: Fix comment
target/hppa: Increase number of temp regs
target/hppa: Only use EXCP_DTLB_MISS
target/hppa: Implement B,GATE insn
target/hppa: Add migration for the cpu
target/hppa: Add system registers to gdbstub
target/hppa: Optimize for flat addressing space
target/hppa: Implement halt and reset instructions
target/hppa: Implement SYNCDMA insn
target/hppa: Implement LCI
target/hppa: Implement LPA
...
Helge Deller [Sun, 8 Oct 2017 20:47:27 +0000 (16:47 -0400)]
hw/hppa: Implement DINO system board
Now that we have the prerequisites in target/hppa/,
implement the hardware for a PA7100LC.
This also enables build for hppa-softmmu.
Signed-off-by: Helge Deller <[email protected]>
[rth: Since it is all new code, squashed all branch development
withing hw/hppa/ to a single patch.] Signed-off-by: Richard Henderson <[email protected]>
Unknown why this works, but if we return EXCP_ITLB_MISS we
will triple-fault the first userland instruction fetch.
Is it something to do with having a combined I/DTLB?
Helge Deller [Fri, 29 Dec 2017 06:04:57 +0000 (22:04 -0800)]
target/hppa: Implement halt and reset instructions
Real hardware would use an external device to control the power.
But for the moment let's invent instructions in reserved space,
to be used by our custom firmware.
Corey Minyard [Sat, 19 Aug 2017 01:15:02 +0000 (20:15 -0500)]
ipmi: Don't set the timestamp on add events that don't have it
According to the spec, from section "32.3 OEM SEL Record - Type
E0h-FFh", event types from 0x0e to 0xff do not have a timestamp.
So don't set it when adding those types. This required putting
the timestamp in a temporary buffer, since it's still required
to set the last addition time.
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