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Merge remote-tracking branch 'remotes/armbru/tags/pull-monitor-2015-11-26' into staging
QMP and QObject patches
# gpg: Signature made Thu 26 Nov 2015 09:07:18 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-2015-11-26:
qjson: Limit number of tokens in addition to total size
qjson: surprise, allocating 6 QObjects per token is expensive
qjson: store tokens in a GQueue
qjson: Convert to parser to recursive descent
qjson: replace QString in JSONLexer with GString
qjson: Inline token_is_escape() and simplify
qjson: Inline token_is_keyword() and simplify
qjson: Give each of the six structural chars its own token type
qjson: Spell out some silent assumptions
check-qjson: Add test for JSON nesting depth limit
qjson: Don't crash when input exceeds nesting limit
qjson: Apply nesting limit more sanely
monitor: Plug memory leak on QMP error
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging
Small patches, without the one that introduces -fwrapv.
# gpg: Signature made Thu 26 Nov 2015 15:48:53 GMT using RSA key ID 78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg: aka "Paolo Bonzini <pbonzini@redhat.com>"
* remotes/bonzini/tags/for-upstream:
target-i386: kvm: Print warning when clearing mcg_cap bits
target-i386: kvm: Use env->mcg_cap when setting up MCE
target-i386: kvm: Abort if MCE bank count is not supported by host
virtio-scsi: don't crash without a valid device
target-sparc: fix 32-bit truncation in fpackfix
exec: remove warning about mempath and hugetlbfs
Revert "exec: silence hugetlbfs warning under qtest"
call bdrv_drain_all() even if the vm is stopped
MAINTAINERS: Update TCG CPU cores section
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Instead of silently clearing mcg_cap bits when the host doesn't
support them, print a warning when doing that.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
[Avoid \n at end of error_report. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <1448471956-66873-10-git-send-email-pbonzini@redhat.com>
When setting up MCE, instead of using the MCE_*_DEF macros
directly, just filter the existing env->mcg_cap value.
As env->mcg_cap is already initialized as
MCE_CAP_DEF|MCE_BANKS_DEF at target-i386/cpu.c:mce_init(), this
doesn't change any behavior. But it will allow us to change
mce_init() in the future, to implement different defaults
depending on CPU model, machine-type or command-line parameters.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <1448471956-66873-9-git-send-email-pbonzini@redhat.com>
Instead of silently changing the number of banks in mcg_cap based
on kvm_get_mce_cap_supported(), abort initialization if the host
doesn't support MCE_BANKS_DEF banks.
Note that MCE_BANKS_DEF was always 10 since it was introduced in
QEMU, and Linux always returned 32 at KVM_CAP_MCE since
KVM_CAP_MCE was introduced, so no behavior is being changed and
the error can't be triggered by any Linux version. The point of
the new check is to ensure we won't silently change the bank
count if we change MCE_BANKS_DEF or make the bank count
configurable in the future.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
[Avoid Yoda condition and \n at end of error_report. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <1448471956-66873-8-git-send-email-pbonzini@redhat.com>
Make sure that we actually have a device when checking the aio
context. Otherwise guests could trigger QEMU crashes.
Signed-off-by: "Eugene (jno) Dvurechenski" <jno@linux.vnet.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Message-Id: <1448549135-6582-2-git-send-email-jno@linux.vnet.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This is reported by Coverity. The algorithm description at
ftp://ftp.icm.edu.pl/packages/ggi/doc/hw/sparc/Sparc.pdf suggests
that the 32-bit parts of rs2, after the left shift, is treated
as a 64-bit integer. Bits 32 and above are used to do the
saturating truncation.
Message-Id: <1446473134-4330-1-git-send-email-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The gethugepagesize() method in exec.c printed a warning if
the file path for "-mem-path" or "-object memory-backend-file"
was not on a hugetlbfs filesystem. This warning is bogus, because
QEMU functions perfectly well with the path on a regular tmpfs
filesystem. Use of hugetlbfs vs tmpfs is a choice for the management
application or end user to make as best fits their needs. As such it
is inappropriate for QEMU to have an opinion on whether the user's
choice is right or wrong in this case.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <1448448749-1332-3-git-send-email-berrange@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This reverts commit 1c7ba94a18.
That commit changed QEMU initialization order from
- object-initial, chardev, qtest, object-late
to
- chardev, qtest, object-initial, object-late
This breaks chardev setups which need to rely on objects
having been created. For example, when chardevs use TLS
encryption in the future, they need to have tls credential
objects created first.
This revert, restores the ordering introduced in
commit f08f9271bf
Author: Daniel P. Berrange <berrange@redhat.com>
Date: Wed May 13 17:14:04 2015 +0100
vl: Create (most) objects before creating chardev backends
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <1448448749-1332-2-git-send-email-berrange@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
There are still I/O operations when the vm is stopped. For example,
stop the vm, and do block migration. In this case, we don't drain all
I/O operation, and may meet the following problem:
qemu-system-x86_64: migration/block.c:731: block_save_complete: Assertion `block_mig_state.submitted == 0' failed.
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Message-Id: <564EE92E.4070701@cn.fujitsu.com>
Cc: qemu-stable@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* include additional w32 MSI install components needed for
guest-exec
* fix 'make install' when compiling with --disable-tools
* fix potential data corruption/loss when accessing files
bi-directionally via guest-file-{read,write}
* explicitly document how integer args for guest-file-seek map to
SEEK_SET/SEEK_CUR/etc to avoid platform-specific differences
v2:
* fixed missing SoB
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Merge remote-tracking branch 'remotes/mdroth/tags/qga-pull-2015-11-25-v2-tag' into staging
qemu-ga patch queue for 2.5
* include additional w32 MSI install components needed for
guest-exec
* fix 'make install' when compiling with --disable-tools
* fix potential data corruption/loss when accessing files
bi-directionally via guest-file-{read,write}
* explicitly document how integer args for guest-file-seek map to
SEEK_SET/SEEK_CUR/etc to avoid platform-specific differences
v2:
* fixed missing SoB
# gpg: Signature made Wed 25 Nov 2015 23:58:45 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>"
* remotes/mdroth/tags/qga-pull-2015-11-25-v2-tag:
qga: added another non-interactive gspawn() helper file.
qga: Better mapping of SEEK_* in guest-file-seek
tests: add file-write-read test
qga: flush explicitly when needed
qga: gspawn() console helper to Windows guest agent msi build
makefile: fix qemu-ga make install for --disable-tools
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Commit 29c75dd "json-streamer: limit the maximum recursion depth and
maximum token count" attempts to guard against excessive heap usage by
limiting total token size (it says "token count", but that's a lie).
Total token size is a rather imprecise predictor of heap usage: many
small tokens use more space than few large tokens with the same input
size, because there's a constant per-token overhead: 37 bytes on my
system.
Tighten this up: limit the token count to 2Mi. Chosen to roughly
match the 64MiB total token size limit.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1448486613-17634-13-git-send-email-armbru@redhat.com>
Replace the contents of the tokens GQueue with a simple struct. This cuts
the amount of memory allocated by tests/check-qjson from ~500MB to ~20MB,
and the execution time from 600ms to 80ms on my laptop. Still a lot (some
could be saved by using an intrusive list, such as QSIMPLEQ, instead of
the GQueue), but the savings are already massive and the right thing to
do would probably be to get rid of json-streamer completely.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <1448300659-23559-5-git-send-email-pbonzini@redhat.com>
[Straightforwardly rebased on my patches]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Even though we still have the "streamer" concept, the tokens can now
be deleted as they are read. While doing so convert from QList to
GQueue, since the next step will make tokens not a QObject and we
will have to do the conversion anyway.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <1448300659-23559-4-git-send-email-pbonzini@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
We backtrack in parse_value(), even though JSON is LL(1) and thus can
be parsed by straightforward recursive descent. Do exactly that.
Based on an almost-correct patch from Paolo Bonzini.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1448486613-17634-10-git-send-email-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
JSONLexer only needs a simple resizable buffer. json-streamer.c
can allocate memory for each token instead of relying on reference
counting of QStrings.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <1448300659-23559-2-git-send-email-pbonzini@redhat.com>
[Straightforwardly rebased on my patches, checkpatch made happy]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1448486613-17634-8-git-send-email-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1448486613-17634-7-git-send-email-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Simplifies things, because we always check for a specific one.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1448486613-17634-6-git-send-email-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1448486613-17634-5-git-send-email-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
This would have prevented the regression mentioned in the previous
commit.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1448486613-17634-4-git-send-email-armbru@redhat.com>
We limit nesting depth and input size to defend against input
triggering excessive heap or stack memory use (commit 29c75dd
json-streamer: limit the maximum recursion depth and maximum token
count). However, when the nesting limit is exceeded,
parser_context_peek_token()'s assertion fails.
Broken in commit 65c0f1e "json-parser: don't replicate tokens at each
level of recursion".
To reproduce stuff 1025 open braces or brackets into QMP.
Fix by taking the error exit instead of the normal one.
Reported-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1448486613-17634-3-git-send-email-armbru@redhat.com>
The nesting limit from commit 29c75dd "json-streamer: limit the
maximum recursion depth and maximum token count" applies separately to
braces and brackets. This makes no sense. Apply it to their sum,
because that's actually a measure of recursion depth.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1448486613-17634-2-git-send-email-armbru@redhat.com>
Commit "c7628bf vnc: only alloc server surface with clients connected"
missed one rarely used codepath (cirrus with guest drivers using 2d
accel) where we have to check for the server surface being present,
to avoid qemu crashing with a NULL pointer dereference. Add the check.
Reported-by: Anthony PERARD <anthony.perard@citrix.com>
Tested-by: Anthony PERARD <anthony.perard@citrix.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
With previous commit we added gspawn-win64-helper-console.exe,
required for gspawn() mingw implementation.
Unfortunatly when running as a service without interactive
desktop, gspawn() also requires another helper app.
Added gspawn-win64-helper.exe and gspawn-win32-helper.exe
for corresponding architectures.
Signed-off-by: Yuri Pudgorodskiy <yur@virtuozzo.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
CC: Michael Roth <mdroth@linux.vnet.ibm.com>
* remove trailing whitespace
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Exposing OS-specific SEEK_ constants in our qapi was a mistake
(if the host has SEEK_CUR as 1, but the guest has it as 2, then
the semantics are unclear what should happen); if we had a time
machine, we would instead expose only a symbolic enum. It's too
late to change the fact that we have an integer in qapi, but we
can at least document what mapping we want to enforce for all
qga clients (and luckily, it happens to be the mapping that both
Linux and Windows use); then fix the code to match that mapping.
It also helps us filter out unsupported SEEK_DATA and SEEK_HOLE.
In the future, we may wish to move our QGA_SEEK_* constants into
qga/qapi-schema.json, along with updating the schema to take an
alternate type (either the integer, or the string value of the
enum name) - but that's too much risk during hard freeze.
Signed-off-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
This test exhibits a POSIX behaviour regarding switching between write
and read. It's undefined result if the application doesn't ensure a
flush between the two operations (with glibc, the flush can be implicit
when the buffer size is relatively small). The previous commit fixes
this test.
Related to:
https://bugzilla.redhat.com/show_bug.cgi?id=1210246
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
According to the specification:
http://pubs.opengroup.org/onlinepubs/9699919799/functions/fopen.html
"the application shall ensure that output is not directly followed by
input without an intervening call to fflush() or to a file positioning
function (fseek(), fsetpos(), or rewind()), and input is not directly
followed by output without an intervening call to a file positioning
function, unless the input operation encounters end-of-file."
Without this change, an fwrite() followed by an fread() may lose the
previously written content, as shown in the following test.
Fixes:
https://bugzilla.redhat.com/show_bug.cgi?id=1210246
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
* don't confuse {write,read}() with f{write,read}() in
commit msg (Laszlo)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Use explicit timeouts instead of trying to approximate it by counting
the cumulative duration of nsleep calls.
In practice, the timeout if inb() dwarfed the nsleep delays, and as a
result the real timeout value became a lot larger than 5 seconds.
So: change the semantics from "Not sooner than 5 seconds" to "no more
than 5 seconds" to ensure we don't hang the tester for very long.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-id: 1448393771-15483-2-git-send-email-jsnow@redhat.com
This helper, gspawn-win64-helper-console.exe for 64-bit and
gspawn-win32-helper-console.exe for 32-bit environment,
is needed for gspawn() mingw implementation, used by guest-exec command.
Without these files guest-exec command on Windows will not
work with "file not found" diagnostic message.
Signed-off-by: Yuri Pudgorodskiy <yur@virtuozzo.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
CC: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
ab59e3e introduced a fix for `make install` on w32 that involved
filtering out qemu-ga from $TOOLS install recipe so that we could
append $(EXESUF) to it before attempting to install the binary
via install-prog function.
install-prog takes a list of binaries to install to a particular
directory. If the list is empty it breaks. We guard against this
by ensuring $TOOLS is not empty prior to calling.
However, ab59e3e introduces extra filtering after this check which
can still result on us attempting to call install-prog with an
empty list of binaries. In particular, this occurs if we
build with the --disable-tools configure option, which results
in qemu-ga being the only member of $TOOLS.
Fix this by doing a simple s/qemu-ga/qemu-ga$(EXESUF)/ pass through
$TOOLS instead of filtering out qemu-ga to handle it seperately.
Reported-by: Steve Ellcey <sellcey@imgtec.com>
Cc: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
If we set migration speed in a very large value, block-migration will try to read
all data to the memory. Because
(block_mig_state.submitted + block_mig_state.read_done) * BLOCK_SIZE
will be overflow, and it will be always less than rate limit.
There is no need to read too many data into memory when the rate limit is very large.
So limit the memory usage can fix the overflow problem.
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
madvise() returns EINVAL in the case of many failures, but also
returns it in cases where the host kernel doesn't have THP enabled.
Postcopy only really cares that THP is off before it detects faults,
and turns it back on afterwards; so we're going to have
to assume that if the madvise fails then the host just doesn't do
THP and we can carry on with the postcopy.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Tested-by: Jason J. Herne <jjherne@linux.vnet.ibm.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
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Merge remote-tracking branch 'mreitz/tags/pull-block-for-kevin-2015-11-25' into queue-block
One block patch for qemu 2.5-rc2.
# gpg: Signature made Wed Nov 25 14:30:45 2015 CET using RSA key ID E838ACAD
# gpg: Good signature from "Max Reitz <mreitz@redhat.com>"
* mreitz/tags/pull-block-for-kevin-2015-11-25:
qemu-iotests: Add -nographic when starting QEMU in 119 and 120
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Otherwise, a window flashes on my desktop (built with SDL). Add this as
other cases have it.
Signed-off-by: Fam Zheng <famz@redhat.com>
Message-id: 1448245930-15031-1-git-send-email-famz@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
Spotted by Coverity.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Add support for caching options that can be specified from the command
line.
The CD-ROM raw char device bypasses the host page cache and therefore
has alignment requirements. Alignment probing is necessary so only use
the raw char device if BDRV_O_NOCACHE is set.
This patch fixes -cdrom /dev/cdrom on Mac OS X hosts, where bdrv_read()
used to fail due to misaligned requests during image format probing.
Signed-off-by: John Arbuckle <programmingkidx@gmail.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
For the "main area on file, oob in memory" case, fix the shifts so that
we erase the correct number of pages.
Signed-off-by: Ricard Wanderlöf <ricardw@axis.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
One test case closed an event notifier (event_notifier_cleanup())
without first disabling it (set_event_notifier(..., NULL)). This
resulted in a leftover handle 0 that was added to each subsequent
WaitForMultipleObjects() call, causing the function to fail (invalid
handle).
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
'make check' failed to compile the test case for mingw because of
undefined references. Pull in a few more dependencies so that it builds.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
This code has been dead for three years (since commit 7e7b7cba1).
Signed-off-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
The device's guest interface and its QEMU user interface are
flawed^Whotly debated. We'll resolve that in the next development
cycle, probably by deprecating the device in favour of a cleaned up,
but not quite compatible revision.
To avoid adding more baggage to the soon-to-be-deprecated interface,
mark property "memdev" as experimental, by renaming it to "x-memdev".
It's the only recent user interface change.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1448384789-14830-6-git-send-email-armbru@redhat.com>
[Update of qemu-doc.texi squashed in]
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
