1ceef9f273 added handling for cleaning
up multiple queues in qemu_del_nic() for cases where multiqueue is in
use. To determine the number of queues it looks at nic->conf->queues,
then iterates through all the queues to cleanup the associated
NetClientStates. If no queues are found, no NetClientStates are deleted.
However, nic->conf->queues is only set when a peer is created via
-netdev or netdev_add, and is otherwise 0. This causes us to spin in
net_cleanup() if we attempt to shut down qemu before adding a host
device.
Since qemu_new_nic() unconditionally creates at least 1
queue/NetClientState at queue idx 0, make qemu_del_nic() always attempt
to clean it up.
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Commit 658f2dc97 accidentally dropped the cast to the target type of
the value loaded by get_user(). The most visible effect of this would
be that the sequence "uint64_t v; get_user_u32(v, addr)" would sign
extend the 32 bit loaded value into v rather than zero extending as
would be expected for a _u32 accessor. Put the cast back again to
restore the old behaviour.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
When the pxa2xx performance counter related cp14 registers were converted
from a switch-statement implementation to the new table driven cpregs
format in commit dc2a9045c, the crn and crm values for all these
registers were accidentally transposed. Fix this mistake, which was
causing OpenBSD for Zaurus to fail to boot.
Reported-by: Jonathan Gray <jsg@jsg.id.au>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
# By Markus Armbruster
# Via Stefan Hajnoczi
* stefanha/tracing:
trace: Fix location of simpletrace.py in docs
trace: Clean up the "try to update atomic until it worked" loops
trace: Direct access of atomics is verboten, use the API
trace: Fix simple trace dropped event record for big endian
# By Michael Tokarev (1) and Stefan Weil (1)
# Via Stefan Hajnoczi
* stefanha/trivial-patches:
vnc: recognize Hungarian doubleacutes
target-m68k: Fix comment
As a general rule, HMP commands must be built on top of the QMP API.
Luiz and others have worked long & hard to make HMP conform to this
rule.
Commit f1088908 added chardev-add, in violation of this rule. QMP
command chardev-add was added right before, with minimal features, and
the idea to complete it step by step, then switch over the HMP command
to use it.
Unfortunately, we're not there, yet, and we don't want to release with
chardev-add in a "HMP is more powerful than QMP" state.
Disable the HMP command for now, along with its chardev-remove buddy.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
New device, has never been released, so we can still improve things
without worrying about compatibility.
Naming is a mess. The code calls the device driver CirMemCharDriver,
the public API calls it "memory", "memchardev", or "memchar", and the
special commands are named like "memchar-FOO". "memory" is a
particularly unfortunate choice, because there's another character
device driver called MemoryDriver. Moreover, the device's distinctive
property is that it's a ring buffer, not that's in memory. Therefore:
* Rename CirMemCharDriver to RingBufCharDriver, and call the thing a
"ringbuf" in the API.
* Rename QMP and HMP commands from memchar-FOO to ringbuf-FOO.
* Rename device parameter from maxcapacity to size (simple words are
good for you).
* Clearly mark the parameter as optional in documentation.
* Fix error reporting so that chardev-add reports to current monitor,
not stderr.
* Replace cirmem in C identifiers by ringbuf.
* Rework documentation. Document the impact of our crappy UTF-8
handling on reading.
* QMP examples that even work.
I could split this up into multiple commits, but they'd change the
same documentation lines multiple times. Not worth it.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Inline trivial cirmem_chr_is_empty() into its only caller.
Rename qemu_chr_cirmem_count() to cirmem_count().
Fast ring buffer index wraparound. Without this, there's no point in
restricting size to a power two.
qemu_is_chr(chr, "memory") returns *zero* when chr is a memory
character device, which isn't what I'd expect. Replace it by the
saner and more obviously correct chr_is_cirmem(). Also avoids
encouraging testing for specific character devices elsewhere.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This is a new device, so there's no compatibility to maintain, and its
use case isn't common enough to justify shorthand syntax.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Undocumented misfeature, get rid of it while we can.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Const-correctness, consistently use standard C types instead of mixing
them with GLib types.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
New errors should be generic unless there's a real use case for rich
errors.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
The data returned has a well-defined size, which makes the size
returned along with it redundant at best. Drop it.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Command memchar-write takes data and size parameter. Begs the
question what happens when data doesn't match size.
With format base64, qmp_memchar_write() copies the full data argument,
regardless of size argument.
With format utf8, qmp_memchar_write() copies size bytes from data,
happily reading beyond data. Copies crap from the heap or even
crashes.
Drop the size parameter, and always copy the full data argument.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
As reported in http://bugs.debian.org/697641 , some Hungarian keys
does not work with qemu when using vnc display.
This is because while the Hungarian keymap mentions these symbols,
qemu know nothing about them. So add them.
This patch is applicable to -stable for all previous releases.
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* spelling fix ito -> into
* reorder to match load/store
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
As reported in http://bugs.debian.org/697641 , some Hungarian keys
does not work with qemu when using vnc display.
This is because while the Hungarian keymap mentions these symbols,
qemu know nothing about them. So add them.
This patch is applicable to -stable for all previous releases.
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
We use the clunk request to do the actual xattr operation. So don't
ignore the error value for fid clunk.
Security model "none" don't support posix acl. Without this patch
guest won't get EOPNOTSUPP error on setxattr("system.posix_acl_access")
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Since these values can possibly be sent from guest (for hw/9pfs), do a sanity check
on them. A 9p write request with 0 bytes caused qemu to abort without this patch
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Fixes a couple of regression bugs introduced by
b9d03e352c and related to
auto-negotiation:
- Auto-negotiation currently sets link up even if it was
forced down from the monitor.
- If Auto-negotiation was in progress during migration,
link will never come up.
As a fix, don't touch NC link_down field at all,
instead add code on receive path to check
guest link status.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
The build is broken on ppc64-linux, possibly only with new binutils:
ld: hw/lm32/../milkymist-tmu2.o: undefined reference to symbol 'XFree'
ld: note: 'XFree' is defined in DSO /lib64/libX11.so.6 so try \
adding it to the linker command line
So let's follow the linker's advice.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
The misnamed HOST_LONG_BITS is really HOST_POINTER_BITS. Here we're
explicitly using an unsigned long, rather than uintptr_t, so it is
more correct to select the swap size via ULONG_MAX.
Acked-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
SeaBIOS is really close to spilling over to 256k. Until we can better
handle migration across RAM block size changes, recompile SeaBIOS with
a compiler that causes the binary to still fit in 128k.
This was built with:
gcc version 4.7.2 20121109 (Red Hat 4.7.2-8) (GCC)
On 64-bit Fedora 18.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Missed when commit 4c3b5a48 moved it.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Harsh Prateek Bora <harsh@linux.vnet.ibm.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
The GLib Reference Manual says:
It is very important that all accesses to a particular integer or
pointer be performed using only this API and that different sizes
of operation are not mixed or used on overlapping memory
regions. Never read or assign directly from or to a value --
always use this API.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Harsh Prateek Bora <harsh@linux.vnet.ibm.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
We use atomic operations to keep track of dropped events.
Inconveniently, GLib supports only int and void * atomics, but the
counter dropped_events is uint64_t. Can't stop commit 62bab732: a
quick (gint *)&dropped_events bludgeons the compiler into submission.
That cast is okay only when int is exactly 64 bits wide, which it
commonly isn't.
If int is even wider, we clobber whatever follows dropped_events. Not
worth worrying about, as none of the machines that interest us have
such morbidly obese ints.
That leaves the common case: int narrower than 64 bits.
Harmless on little endian hosts: we just don't access the most
significant bits of dropped_events. They remain zero.
On big endian hosts, we use only the most significant bits of
dropped_events as counter. The least significant bits remain zero.
However, we write out the full value, which is the correct counter
shifted left a bunch of places.
Fix by changing the variables involved to int.
There's another, equally suspicious-looking (gint *)&trace_idx
argument to g_atomic_int_compare_and_exchange(), but that one casts
unsigned *, so it's okay. But it's also superfluous, because GLib's
atomic int operations work just fine for unsigned. Drop it.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
gcc with -Wextra complains about an ordered pointer comparison:
target-s390x/helper.c:660:27: warning:
ordered comparison of pointer with integer zero [-Wextra]
Obviously the index was missing in the code.
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
As best I can tell, this is a false positive.
[aliguori@ccnode4 qemu-s390]$ make
CC s390x-softmmu/target-s390x/helper.o
/home/aliguori/git/qemu/target-s390x/helper.c: In function ‘do_interrupt’:
/home/aliguori/git/qemu/target-s390x/helper.c:673:17: error: ‘addr’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
/home/aliguori/git/qemu/target-s390x/helper.c:620:20: note: ‘addr’ was declared here
/home/aliguori/git/qemu/target-s390x/helper.c:673:17: error: ‘mask’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
/home/aliguori/git/qemu/target-s390x/helper.c:620:14: note: ‘mask’ was declared here
cc1: all warnings being treated as errors
make[1]: *** [target-s390x/helper.o] Error 1
make: *** [subdir-s390x-softmmu] Error 2
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Cc: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
b0b873a078 bumped the vmstate version and
introduced an old-style load function to handle migration from prior
(<= 1.2) versions.
The load function passes the top-level PIIX4PMState pointer to
vmstate_load_state() to handle nested structs for APMState and
pci_status, which leads to corruption of the top-level PIIX4PMState,
since pointers to the nested structs are expected.
A segfault can be fairly reliably triggered by migrating from 1.2 and
issuing a reset, which will trigger a number of QOM operations which
rely on the now corrupted ObjectClass/Object members.
Fix this by passing in the expected pointers for vmstate_load_state().
Cc: qemu-stable@nongnu.org
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
- Accept empty strings without aborting
- Use parse_uint*() to parse numbers
- Abort if anything except '-' or end-of-string is found after the first
number.
- Check for endvalue < value
Also change the MAX_CPUMASK_BITS warning message from "A max of %d CPUs
are supported in a guest" to "qemu: NUMA: A max of %d VCPUs are
supported".
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This will make it easier to refactor that code later.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This should catch many kinds of errors that the current code wasn't
checking for:
- Values that can't be parsed as a number
- Negative values
- Overflow
- Empty string
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Without this check, QEMU will corrupt memory if a too-large nodeid is
provided in the command-line. e.g.:
-numa node,mem=...,cpus=...,nodeid=65
This changes nodenr to unsigned long long, to avoid integer conversion
issues when converting the strtoull() result to int.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Instead of checking the limit before calling numa_add(), check the limit
only when we already know we're going to add a new node.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Abort in case an invalid -numa option is provided, instead of silently
ignoring it.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
The numa_add() code was unconditionally adding 1 to the get_opt_name()
return value, making it point after the end of the string if no ','
separator is present.
Example of weird behavior caused by the bug:
$ qemu-img create -f qcow2 this-file-image-has,cpus=5,mem=1000,in-its-name.qcow2 5G
Formatting 'this-file-image-has,cpus=5,mem=1000,in-its-name.qcow2', fmt=qcow2 size=5368709120 encryption=off cluster_size=65536
$ ./x86_64-softmmu/qemu-system-x86_64 -S -monitor stdio -numa node 'this-file-image-has,cpus=5,mem=1000,in-its-name.qcow2'
QEMU 1.3.50 monitor - type 'help' for more information
(qemu) info numa
1 nodes
node 0 cpus: 0
node 0 size: 1000 MB
(qemu)
This changes the code to nove the pointer only if ',' is found.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
There are lots of duplicate parsing code using strto*() in QEMU, and
most of that code is broken in one way or another. Even the visitors
code have duplicate integer parsing code[1]. This introduces functions
to help parsing unsigned int values: parse_uint() and parse_uint_full().
Parsing functions for signed ints and floats will be submitted later.
parse_uint_full() has all the checks made by opts_type_uint64() at
opts-visitor.c:
- Check for NULL (returns -EINVAL)
- Check for negative numbers (returns -EINVAL)
- Check for empty string (returns -EINVAL)
- Check for overflow or other errno values set by strtoll() (returns
-errno)
- Check for end of string (reject invalid characters after number)
(returns -EINVAL)
parse_uint() does everything above except checking for the end of the
string, so callers can continue parsing the remainder of string after
the number.
Unit tests included.
[1] string-input-visitor.c:parse_int() could use the same parsing code
used by opts-visitor.c:opts_type_int(), instead of duplicating that
logic.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Around r3361 (81fdc5f8d2) env->debug1 used
to contain the address of an MMU fault. This is now written into
env->pregs[PR_EDA] instead.
Signed-off-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
We had two copies of a ffs function for longs with subtly different
semantics and, for the one in bitops.h, a confusing name: the result
was off-by-one compared to the library function ffsl.
Unify the functions into one, and solve the name problem by calling
the 0-based functions "bitops_ctzl" and "bitops_ctol" respectively.
This also fixes the build on platforms with ffsl, including Mac OS X
and Windows.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Tested-by: Andreas Färber <afaerber@suse.de>
Tested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
MinGW has no strtok_r, so we need a declaration in sysemu/os-win32.h.
We must also fix the include statements in util/envlist.c to include
that file.
We currently don't need an implementation of strtok_r because the
code is compiled but not linked for MinGW.
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
The multiqueue patch series broke -netdev tap,fd=X which manifests
as libvirt not being able to start a guest. This was because it
passed NULL for the netdev name which results in an anonymous netdev
device regardless of what the user specified.
Cc: Jason Wang <jasowang@redhat.com>
Cc: Bruce Rogers <brogers@suse.com>
Reported-by: Bruce Rogers <brogers@suse.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
