sdk/emulator/qemu.git
8 years agoMerge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging
Peter Maydell [Wed, 10 Aug 2016 14:59:08 +0000 (15:59 +0100)]
Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging

* pc-bios/optionrom/Makefile fixes
* warning fixes for __atomic_load and -1 << x in clang
* missed interrupt fix from Gonglei
* checkpatch fix from Radim and myself

# gpg: Signature made Wed 10 Aug 2016 14:54:31 BST
# gpg:                using RSA key 0xBFFBD25F78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>"
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4  E2F7 7E15 100C CD36 69B1
#      Subkey fingerprint: F133 3857 4B66 2389 866C  7682 BFFB D25F 78C7 AE83

* remotes/bonzini/tags/for-upstream:
  checkpatch: default to success if only warnings
  checkpatch: bump most warnings to errors
  CODING_STYLE, checkpatch: update line length rules
  checkpatch: check for CVS keywords on all sources
  checkpatch: tweak the files in which TABs are checked
  timer: set vm_clock disabled default
  checkpatch: ignore automatically imported Linux headers
  clang: Fix warning reg. expansion to 'defined'
  Disable warn about left shifts of negative values
  atomic: strip "const" from variables declared with typeof
  optionrom: fix compilation with mingw docker target
  optionrom: add -fno-stack-protector
  build-sys: fix building with make CFLAGS=.. argument
  linuxboot_dma: avoid guest ABI breakage on gcc vs. clang compilation

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agoMerge remote-tracking branch 'remotes/dgibson/tags/ppc-for-2.7-20160810' into staging
Peter Maydell [Wed, 10 Aug 2016 14:13:30 +0000 (15:13 +0100)]
Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-2.7-20160810' into staging

ppc patch queue for 2016-08-10

Here are some more last minute PAPR and ppc related fixes for
qemu-2.7.  One patch makes compressed memory dumps work with guest
kernels using page sizes up to 64KiB.  This is important since most
current pseries guests use a 64KiB default page size.  The remainder
fix a regression with handling of CPU aliases which causes serious
problem for libvirt.

# gpg: Signature made Wed 10 Aug 2016 06:44:27 BST
# 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: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg:          It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 75F4 6586 AE61 A66C C44E  87DC 6C38 CACA 20D9 B392

* remotes/dgibson/tags/ppc-for-2.7-20160810:
  ppc/kvm: Register also a generic spapr CPU core family type
  ppc/kvm: Do not mess up the generic CPU family registration
  hw/ppc/spapr: Look up CPU alias names instead of hard-coding the aliases
  ppc: Introduce a function to look up CPU alias strings
  spapr: remove extra type variable
  ppc64: fix compressed dump with pseries kernel

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agocheckpatch: default to success if only warnings
Paolo Bonzini [Tue, 9 Aug 2016 15:47:44 +0000 (17:47 +0200)]
checkpatch: default to success if only warnings

CHK-level checks have been removed from checkpatch or bumped to
errors, so there is no effect anymore for --strict/--subjective.
Furthermore, even most WARNs have been bumped to errors, with
WARN only reserved to things that patchew probably ought not
to complain about (and that maintainers probably will notice
anyway during review if they are extreme).

Default to exiting with success even if there are WARN-level
failures, and cause --strict to fail for warnings.  Maintainers
that want to have a strict 80-character limit for their subsystem
can add it to a commit hook for example.

The --subjective synonym is removed.

Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
8 years agocheckpatch: bump most warnings to errors
Paolo Bonzini [Tue, 9 Aug 2016 15:47:43 +0000 (17:47 +0200)]
checkpatch: bump most warnings to errors

This only leaves a warning-level message for the extra-long lines
soft limit.  Everything else is bumped up.

In the future warnings can be added for checks that can have false
positives.

Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
8 years agoCODING_STYLE, checkpatch: update line length rules
Paolo Bonzini [Mon, 7 Sep 2015 09:53:02 +0000 (11:53 +0200)]
CODING_STYLE, checkpatch: update line length rules

Line lengths above 80 characters do exist.  They are rare, but
they happen from time to time.  An ignored rule is worse than an
exception to the rule, so do the latter.

Some on the list expressed their preference for a soft limit that
is slightly lower than 80 characters, to account for extra characters
in unified diffs (including three-way diffs) and for email quoting.
However, there was no consensus on this so keep the 80-character
soft limit and add a hard limit at 90.

Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
8 years agocheckpatch: check for CVS keywords on all sources
Paolo Bonzini [Wed, 10 Aug 2016 08:05:03 +0000 (10:05 +0200)]
checkpatch: check for CVS keywords on all sources

These should apply to all files, not just C/C++.  Tweak the regular
expression to check for whole words, to avoid false positives on Perl
variables starting with "Id".

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
8 years agocheckpatch: tweak the files in which TABs are checked
Paolo Bonzini [Tue, 9 Aug 2016 15:47:42 +0000 (17:47 +0200)]
checkpatch: tweak the files in which TABs are checked

Include Python and shell scripts, and make an exception for Perl
scripts we imported from Linux or elsewhere.

Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
8 years agoppc/kvm: Register also a generic spapr CPU core family type
Thomas Huth [Tue, 9 Aug 2016 17:00:01 +0000 (19:00 +0200)]
ppc/kvm: Register also a generic spapr CPU core family type

There is a regression with the "-cpu" parameter introduced by
the spapr CPU hotplug code: We used to allow to specify a
"CPU family" name with the "-cpu" parameter when running on KVM so
that the user does not need to know the gory details of the exact
CPU version of the host CPU. For example, it was possible to
use "-cpu POWER8" on a POWER8E host CPU. This behavior does not
work anymore with the new hot-pluggable spapr-cpu-core types.
Since libvirt already heavily depends on the old behavior, this
is quite a severe regression in the QEMU parameter interface.
Let's fix it by supporting a CPU family type for the spapr-cpu-core
on KVM, too.

Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1363812
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
8 years agoppc/kvm: Do not mess up the generic CPU family registration
Thomas Huth [Tue, 9 Aug 2016 17:00:00 +0000 (19:00 +0200)]
ppc/kvm: Do not mess up the generic CPU family registration

The code for registering the sPAPR CPU host core type has been
added inbetween the generic CPU host core type and the generic
CPU family type. That way the instance_init and the class_init
information got lost when registering the generic CPU family
type. Fix it by moving the generic family registration before
the spapr cpu core registration code.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
8 years agohw/ppc/spapr: Look up CPU alias names instead of hard-coding the aliases
Thomas Huth [Tue, 9 Aug 2016 16:59:59 +0000 (18:59 +0200)]
hw/ppc/spapr: Look up CPU alias names instead of hard-coding the aliases

Hard-coding the CPU alias names in the spapr_cores[] array has
two big disadvantages:

1) We register a real type with the CPU alias name in
   spapr_cpu_core_register_types() - this prevents us from registering
   a CPU family name in kvm_ppc_register_host_cpu_type() with the same
   name (as we do it for the non-hotpluggable CPU types).

2) It's quite cumbersome to maintain the aliases here in sync with the
   ppc_cpu_aliases list from target-ppc/cpu-models.c.

So let's simply add proper alias lookup to the spapr cpu core code,
too (by checking whether the given model can be used directly, and
if not by trying to look up the given model as an alias name instead).

Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
8 years agoppc: Introduce a function to look up CPU alias strings
Thomas Huth [Tue, 9 Aug 2016 16:59:58 +0000 (18:59 +0200)]
ppc: Introduce a function to look up CPU alias strings

We will need this function to look up the aliases in the
spapr-cpu-core code, too.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
8 years agospapr: remove extra type variable
Cédric Le Goater [Tue, 9 Aug 2016 16:59:57 +0000 (18:59 +0200)]
spapr: remove extra type variable

The sPAPR CPU core typename is already available in the upper
block. Let's use it and move the check upward also.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
8 years agoppc64: fix compressed dump with pseries kernel
Laurent Vivier [Mon, 8 Aug 2016 13:08:53 +0000 (15:08 +0200)]
ppc64: fix compressed dump with pseries kernel

If we don't provide the page size in target-ppc:cpu_get_dump_info(),
the default one (TARGET_PAGE_SIZE, 4KB) is used to create
the compressed dump. It works fine with Macintosh, but not with
pseries as the kernel default page size is 64KB.

Without this patch, if we generate a compressed dump in the QEMU monitor:

    (qemu) dump-guest-memory -z qemu.dump

This dump cannot be read by crash:

    # crash vmlinux qemu.dump
    ...
    WARNING: cannot translate vmemmap kernel virtual addresses:
             commands requiring page structure contents will fail
    ...

Page_size is used to determine the dumpfile's block size. The
block size needs to be at least the page size, but a multiple of page
size works fine too. For PPC64, linux supports either 4KB or 64KB software
page size. So we define the page_size to 64KB.

Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
8 years agotimer: set vm_clock disabled default
Gonglei [Tue, 9 Aug 2016 07:49:15 +0000 (15:49 +0800)]
timer: set vm_clock disabled default

(commit 80dcfb8532ae76343109a48f12ba8ca1c505c179)
Upon migration, the code use a timer based on vm_clock for 1ns
in the future from post_load to do the event send in case host_connected
differs between migration source and target.

However, it's not guaranteed that the apic is ready to inject irqs into
the guest, and the irq line remained high, resulting in any future interrupts
going unnoticed by the guest as well.

That's because 1) the migration coroutine is not blocked when it get EAGAIN
while reading QEMUFile. 2) The vm_clock is enabled default currently, it doesn't
rely on the calling of vm_start(), that means vm_clock timers can run before
VCPUs are running.

So, let's set the vm_clock disabled default, keep the initial intention of
design for vm_clock timers.

Meanwhile, change the test-aio usecase, using QEMU_CLOCK_REALTIME instead of
QEMU_CLOCK_VIRTUAL as the block code does.

CC: Paolo Bonzini <pbonzini@redhat.com>
CC: Dr. David Alan Gilbert <dgilbert@redhat.com>
CC: qemu-stable@nongnu.org
Signed-off-by: Gonglei <arei.gonglei@huawei.com>
Message-Id: <1470728955-90600-1-git-send-email-arei.gonglei@huawei.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
8 years agocheckpatch: ignore automatically imported Linux headers
Radim Krčmář [Tue, 9 Aug 2016 17:38:41 +0000 (19:38 +0200)]
checkpatch: ignore automatically imported Linux headers

Linux uses tabs for indentation and checkpatch always complained about
automatically imported headers.  update-linux-headers.sh could be modified to
expand tabs, but there is no real reason to complain about any ugly code in
Linux headers, so skip all hunk-related checks.

Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
8 years agoclang: Fix warning reg. expansion to 'defined'
Pranith Kumar [Tue, 9 Aug 2016 19:02:27 +0000 (15:02 -0400)]
clang: Fix warning reg. expansion to 'defined'

Clang produces the following warning. The warning is detailed here:
https://reviews.llvm.org/D15866. Fix the warning.

/home/pranith/devops/code/qemu/hw/display/qxl.c:507:5: warning: macro expansion producing 'defined' has undefined behavior [-Wexpansion-to-defined]
    ^
/home/pranith/devops/code/qemu/include/ui/qemu-spice.h:46:5: note: expanded from macro 'SPICE_NEEDS_SET_MM_TIME'
  (!defined(SPICE_SERVER_VERSION) || (SPICE_SERVER_VERSION < 0xc06))
    ^
/home/pranith/devops/code/qemu/hw/display/qxl.c:1074:5: warning: macro expansion producing 'defined' has undefined behavior [-Wexpansion-to-defined]
    ^
/home/pranith/devops/code/qemu/include/ui/qemu-spice.h:46:5: note: expanded from macro 'SPICE_NEEDS_SET_MM_TIME'
  (!defined(SPICE_SERVER_VERSION) || (SPICE_SERVER_VERSION < 0xc06))

Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
8 years agoDisable warn about left shifts of negative values
Pranith Kumar [Tue, 9 Aug 2016 19:02:26 +0000 (15:02 -0400)]
Disable warn about left shifts of negative values

It seems like there's no good reason for the compiler to exploit the
undefinedness of left shifts.  GCC explicitly documents that they do not
use at all this possibility and, while they also say this is subject
to change, they have been saying this for 10 years (since the wording
appeared in the GCC 4.0 manual).

Disable these warnings by passing in -Wno-shift-negative-value.

Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: Markus Armbruster <armbru@redhat.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
[pranith: forward-port part of patch to 2.7]
Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
8 years agoatomic: strip "const" from variables declared with typeof
Paolo Bonzini [Tue, 9 Aug 2016 19:02:24 +0000 (15:02 -0400)]
atomic: strip "const" from variables declared with typeof

With the latest clang, we have the following warning:

    /home/pranith/devops/code/qemu/include/qemu/seqlock.h:62:21: warning: passing 'typeof (*&sl->sequence) *' (aka 'const unsigned int *') to parameter of type 'unsigned int *' discards qualifiers [-Wincompatible-pointer-types-discards-qualifiers]
        return unlikely(atomic_read(&sl->sequence) != start);
                        ^~~~~~~~~~~~~~~~~~~~~~~~~~
    /home/pranith/devops/code/qemu/include/qemu/atomic.h:58:25: note: expanded from macro 'atomic_read'
        __atomic_load(ptr, &_val, __ATOMIC_RELAXED);     \
                           ^~~~~

Stripping const is a bit tricky due to promotions, but it is doable
with either C11 _Generic or GCC extensions.  Use the latter.

Reported-by: Pranith Kumar <bobby.prani@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
[pranith: Add conversion for bool type]
Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
8 years agooptionrom: fix compilation with mingw docker target
Paolo Bonzini [Tue, 9 Aug 2016 20:50:40 +0000 (22:50 +0200)]
optionrom: fix compilation with mingw docker target

Two fixes are needed.  First, mingw does not have -D_FORTIFY_SOURCE,
hence --enable-debug disables optimization.  This is not acceptable
for ROMs, which should override CFLAGS to force inclusion of -O2.

Second, PE stores global constructors and destructors using the
following linker script snippet:

     ___CTOR_LIST__ = .; __CTOR_LIST__ = . ;
LONG (-1);*(.ctors); *(.ctor); *(SORT(.ctors.*));  LONG (0);
     ___DTOR_LIST__ = .; __DTOR_LIST__ = . ;
LONG (-1); *(.dtors); *(.dtor); *(SORT(.dtors.*));  LONG (0);

The LONG directives cause the .img files to be 16 bytes too large;
the recently added check to signrom.py catches this.  To fix this,
replace -T and -e options with a linker script.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
8 years agooptionrom: add -fno-stack-protector
Paolo Bonzini [Mon, 8 Aug 2016 08:57:35 +0000 (10:57 +0200)]
optionrom: add -fno-stack-protector

This is required by OpenBSD.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
8 years agobuild-sys: fix building with make CFLAGS=.. argument
Marc-André Lureau [Fri, 5 Aug 2016 08:23:46 +0000 (12:23 +0400)]
build-sys: fix building with make CFLAGS=.. argument

When calling make with a CFLAGS=.. argument, the -g/-O filter is not
applied, which may result with build failure with ASAN for example. It
could be solved with an 'override' directive on CFLAGS, but that would
actually prevent setting different CFLAGS manually.

Instead, filter the CFLAGS argument from the top-level Makefile (so
you could still call make with a different CFLAGS argument on a
rom/Makefile manually)

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20160805082421.21994-2-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
8 years agolinuxboot_dma: avoid guest ABI breakage on gcc vs. clang compilation
Paolo Bonzini [Fri, 5 Aug 2016 08:51:37 +0000 (10:51 +0200)]
linuxboot_dma: avoid guest ABI breakage on gcc vs. clang compilation

Recent GCC compiles linuxboot_dma.c to 921 bytes, while CentOS 6 needs
1029 and clang needs 1527.  Because the size of the ROM, rounded to the
next 512 bytes, must match, this causes the API to break between a <1K
ROM and one that is bigger.

We want to make the ROM 1.5 KB in size, but it's better to make clang
produce leaner ROMs, because currently it is worryingly close to the limit.
To fix this prevent clang's happy inlining (which -Os cannot prevent).
This only requires adding a noinline attribute.

Second, the patch makes sure that the ROM has enough padding to prevent
ABI breakage on different compilers.  The size is now hardcoded in the file
that is passed to signrom.py, as was the case before commit 6f71b77
("scripts/signrom.py: Allow option ROM checksum script to write the size
header.", 2016-05-23); signrom.py however will still pad the input to
the requested size.  This ensures that the padding goes beyond the
next multiple of 512 if necessary, and also avoids the need for
-fno-toplevel-reorder which clang doesn't support.  signrom.py can then
error out if the requested size is too small for the actual size of the
compiled ROM.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
8 years agoMerge remote-tracking branch 'remotes/jnsnow/tags/ide-pull-request' into staging
Peter Maydell [Tue, 9 Aug 2016 15:53:32 +0000 (16:53 +0100)]
Merge remote-tracking branch 'remotes/jnsnow/tags/ide-pull-request' into staging

# gpg: Signature made Tue 09 Aug 2016 16:47:32 BST
# gpg:                using RSA key 0x7DEF8106AAFC390E
# gpg: Good signature from "John Snow (John Huston) <jsnow@redhat.com>"
# Primary key fingerprint: FAEB 9711 A12C F475 812F  18F2 88A9 064D 1835 61EB
#      Subkey fingerprint: F9B7 ABDB BCAC DF95 BE76  CBD0 7DEF 8106 AAFC 390E

* remotes/jnsnow/tags/ide-pull-request:
  atapi: fix halted DMA reset

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agoatapi: fix halted DMA reset
John Snow [Tue, 9 Aug 2016 15:47:23 +0000 (11:47 -0400)]
atapi: fix halted DMA reset

Followup to 87ac25fd, this time for ATAPI DMA.

Reported-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: John Snow <jsnow@redhat.com>
Message-id: 1470164128-28158-1-git-send-email-jsnow@redhat.com
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: John Snow <jsnow@redhat.com>
8 years agoMerge remote-tracking branch 'remotes/jasowang/tags/net-pull-request' into staging
Peter Maydell [Tue, 9 Aug 2016 09:44:27 +0000 (10:44 +0100)]
Merge remote-tracking branch 'remotes/jasowang/tags/net-pull-request' into staging

# gpg: Signature made Tue 09 Aug 2016 08:28:39 BST
# gpg:                using RSA key 0xEF04965B398D6211
# gpg: Good signature from "Jason Wang (Jason Wang on RedHat) <jasowang@redhat.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg:          It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 215D 46F4 8246 689E C77F  3562 EF04 965B 398D 6211

* remotes/jasowang/tags/net-pull-request:
  hw/net: Fix a heap overflow in xlnx.xps-ethernetlite
  net: vmxnet3: check for device_active before write
  net: check fragment length during fragmentation

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agohw/net: Fix a heap overflow in xlnx.xps-ethernetlite
chaojianhu [Tue, 9 Aug 2016 03:52:54 +0000 (11:52 +0800)]
hw/net: Fix a heap overflow in xlnx.xps-ethernetlite

The .receive callback of xlnx.xps-ethernetlite doesn't check the length
of data before calling memcpy. As a result, the NetClientState object in
heap will be overflowed. All versions of qemu with xlnx.xps-ethernetlite
will be affected.

Reported-by: chaojianhu <chaojianhu@hotmail.com>
Signed-off-by: chaojianhu <chaojianhu@hotmail.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
8 years agonet: vmxnet3: check for device_active before write
Li Qiang [Mon, 8 Aug 2016 12:38:31 +0000 (18:08 +0530)]
net: vmxnet3: check for device_active before write

Vmxnet3 device emulator does not check if the device is active,
before using it for write. It leads to a use after free issue,
if the vmxnet3_io_bar0_write routine is called after the device is
deactivated. Add check to avoid it.

Reported-by: Li Qiang <liqiang6-s@360.cn>
Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
Acked-by: Dmitry Fleytman <dmitry@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
8 years agonet: check fragment length during fragmentation
Prasad J Pandit [Thu, 4 Aug 2016 07:30:14 +0000 (13:00 +0530)]
net: check fragment length during fragmentation

Network transport abstraction layer supports packet fragmentation.
While fragmenting a packet, it checks for more fragments from
packet length and current fragment length. It is susceptible
to an infinite loop, if the current fragment length is zero.
Add check to avoid it.

Reported-by: Li Qiang <liqiang6-s@360.cn>
Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
Reviewed-by: Dmitry Fleytman <dmitry@daynix.com>
CC: qemu-stable@nongnu.org
Signed-off-by: Jason Wang <jasowang@redhat.com>
8 years agoUpdate version for v2.7.0-rc2 release
Peter Maydell [Mon, 8 Aug 2016 16:26:11 +0000 (17:26 +0100)]
Update version for v2.7.0-rc2 release

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agoMerge remote-tracking branch 'remotes/armbru/tags/pull-monitor-2016-08-08' into staging
Peter Maydell [Mon, 8 Aug 2016 14:57:06 +0000 (15:57 +0100)]
Merge remote-tracking branch 'remotes/armbru/tags/pull-monitor-2016-08-08' into staging

Monitor patches for 2016-08-08

# gpg: Signature made Mon 08 Aug 2016 13:24:42 BST
# gpg:                using RSA key 0x3870B400EB918653
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>"
# gpg:                 aka "Markus Armbruster <armbru@pond.sub.org>"
# Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867  4E5F 3870 B400 EB91 8653

* remotes/armbru/tags/pull-monitor-2016-08-08:
  audio: clean up before monitor clean up
  monitor: fix crash when leaving qemu with spice audio

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agoMerge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging
Peter Maydell [Mon, 8 Aug 2016 14:21:33 +0000 (15:21 +0100)]
Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging

More block layer patches for 2.7.0-rc2

# gpg: Signature made Mon 08 Aug 2016 12:51:30 BST
# gpg:                using RSA key 0x7F09B272C88F2FD6
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>"
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74  56FE 7F09 B272 C88F 2FD6

* remotes/kevin/tags/for-upstream:
  iotests: fix 109
  mirror: finish earlier on error
  tests: Test blockjob IDs
  block/qdev: Let 'drive' property fall back to node name

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agoMerge remote-tracking branch 'remotes/cohuck/tags/s390x-20160808' into staging
Peter Maydell [Mon, 8 Aug 2016 13:24:50 +0000 (14:24 +0100)]
Merge remote-tracking branch 'remotes/cohuck/tags/s390x-20160808' into staging

One more s390x fix for a bug in the pci rework.

# gpg: Signature made Mon 08 Aug 2016 11:49:34 BST
# gpg:                using RSA key 0xDECF6B93C6F02FAF
# gpg: Good signature from "Cornelia Huck <huckc@linux.vnet.ibm.com>"
# gpg:                 aka "Cornelia Huck <cornelia.huck@de.ibm.com>"
# Primary key fingerprint: C3D0 D66D C362 4FF6 A8C0  18CE DECF 6B93 C6F0 2FAF

* remotes/cohuck/tags/s390x-20160808:
  s390x/pci: fix null pointer bug

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agohw/sparc/leon3: Don't call get_image_size() on a NULL pointer
Peter Maydell [Fri, 5 Aug 2016 10:03:59 +0000 (11:03 +0100)]
hw/sparc/leon3: Don't call get_image_size() on a NULL pointer

get_image_size() doesn't handle being passed a NULL pointer, so
avoid doing that. Spotted by the clang ub sanitizer (which notices
the attempt to pass NULL to open()).

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1470391439-28427-1-git-send-email-peter.maydell@linaro.org

8 years agoMerge remote-tracking branch 'remotes/armbru/tags/pull-error-2016-08-08' into staging
Peter Maydell [Mon, 8 Aug 2016 12:25:35 +0000 (13:25 +0100)]
Merge remote-tracking branch 'remotes/armbru/tags/pull-error-2016-08-08' into staging

Error reporting patches for 2016-08-08

# gpg: Signature made Mon 08 Aug 2016 08:14:49 BST
# gpg:                using RSA key 0x3870B400EB918653
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>"
# gpg:                 aka "Markus Armbruster <armbru@pond.sub.org>"
# Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867  4E5F 3870 B400 EB91 8653

* remotes/armbru/tags/pull-error-2016-08-08:
  error: Fix error_printf() calls lacking newlines
  vfio: Use error_report() instead of error_printf() for errors
  checkpatch: Fix newline detection in error_setg() & friends
  error: Strip trailing '\n' from error string arguments (again)

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agoaudio: clean up before monitor clean up
Marc-André Lureau [Mon, 1 Aug 2016 11:23:43 +0000 (15:23 +0400)]
audio: clean up before monitor clean up

Since aa5cb7f5e, the chardevs are being cleaned up when leaving qemu,
before the atexit() handlers. audio_cleanup() may use the monitor to
notify of changes. For compatibility reasons, let's clean up audio
before the monitor so it keeps emitting monitor events.

The audio_atexit() function is made idempotent (so it can be called
multiple times), and renamed to audio_cleanup(). Since coreaudio
backend is using a 'isAtexit' code path, change it to check
audio_is_cleaning_up() instead, so the path is taken during normal
exit.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20160801112343.29082-3-marcandre.lureau@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
8 years agomonitor: fix crash when leaving qemu with spice audio
Marc-André Lureau [Mon, 1 Aug 2016 11:23:42 +0000 (15:23 +0400)]
monitor: fix crash when leaving qemu with spice audio

Since aa5cb7f5e, the chardevs are being cleaned up when leaving
qemu. However, the monitor has still references to them, which may
lead to crashes when running atexit() and trying to send monitor
events:

 #0  0x00007fffdb18f6f5 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:54
 #1  0x00007fffdb1912fa in __GI_abort () at abort.c:89
 #2  0x0000555555c263e7 in error_exit (err=22, msg=0x555555d47980 <__func__.13537> "qemu_mutex_lock") at util/qemu-thread-posix.c:39
 #3  0x0000555555c26488 in qemu_mutex_lock (mutex=0x5555567a2420) at util/qemu-thread-posix.c:66
 #4  0x00005555558c52db in qemu_chr_fe_write (s=0x5555567a2420, buf=0x55555740dc40 "{\"timestamp\": {\"seconds\": 1470041716, \"microseconds\": 989699}, \"event\": \"SPICE_DISCONNECTED\", \"data\": {\"server\": {\"port\": \"5900\", \"family\": \"ipv4\", \"host\": \"127.0.0.1\"}, \"client\": {\"port\": \"40272\", \"f"..., len=240) at qemu-char.c:280
 #5  0x0000555555787cad in monitor_flush_locked (mon=0x5555567bd9e0) at /home/elmarco/src/qemu/monitor.c:311
 #6  0x0000555555787e46 in monitor_puts (mon=0x5555567bd9e0, str=0x5555567a44ef "") at /home/elmarco/src/qemu/monitor.c:353
 #7  0x00005555557880fe in monitor_json_emitter (mon=0x5555567bd9e0, data=0x5555567c73a0) at /home/elmarco/src/qemu/monitor.c:401
 #8  0x00005555557882d2 in monitor_qapi_event_emit (event=QAPI_EVENT_SPICE_DISCONNECTED, qdict=0x5555567c73a0) at /home/elmarco/src/qemu/monitor.c:472
 #9  0x000055555578838f in monitor_qapi_event_queue (event=QAPI_EVENT_SPICE_DISCONNECTED, qdict=0x5555567c73a0, errp=0x7fffffffca88) at /home/elmarco/src/qemu/monitor.c:497
 #10 0x0000555555c15541 in qapi_event_send_spice_disconnected (server=0x5555571139d0, client=0x5555570d0db0, errp=0x5555566c0428 <error_abort>) at qapi-event.c:1038
 #11 0x0000555555b11bc6 in channel_event (event=3, info=0x5555570d6c00) at ui/spice-core.c:248
 #12 0x00007fffdcc9983a in adapter_channel_event (event=3, info=0x5555570d6c00) at reds.c:120
 #13 0x00007fffdcc99a25 in reds_handle_channel_event (reds=0x5555567a9d60, event=3, info=0x5555570d6c00) at reds.c:324
 #14 0x00007fffdcc7d4c4 in main_dispatcher_self_handle_channel_event (self=0x5555567b28b0, event=3, info=0x5555570d6c00) at main-dispatcher.c:175
 #15 0x00007fffdcc7d5b1 in main_dispatcher_channel_event (self=0x5555567b28b0, event=3, info=0x5555570d6c00) at main-dispatcher.c:194
 #16 0x00007fffdcca7674 in reds_stream_push_channel_event (s=0x5555570d9910, event=3) at reds-stream.c:354
 #17 0x00007fffdcca749b in reds_stream_free (s=0x5555570d9910) at reds-stream.c:323
 #18 0x00007fffdccb5dad in snd_disconnect_channel (channel=0x5555576a89a0) at sound.c:229
 #19 0x00007fffdccb9e57 in snd_detach_common (worker=0x555557739720) at sound.c:1589
 #20 0x00007fffdccb9f0e in snd_detach_playback (sin=0x5555569fe3f8) at sound.c:1602
 #21 0x00007fffdcca3373 in spice_server_remove_interface (sin=0x5555569fe3f8) at reds.c:3387
 #22 0x00005555558ff6e2 in line_out_fini (hw=0x5555569fe370) at audio/spiceaudio.c:152
 #23 0x00005555558f909e in audio_atexit () at audio/audio.c:1754
 #24 0x00007fffdb1941e8 in __run_exit_handlers (status=0, listp=0x7fffdb5175d8 <__exit_funcs>, run_list_atexit=run_list_atexit@entry=true) at exit.c:82
 #25 0x00007fffdb194235 in __GI_exit (status=<optimized out>) at exit.c:104
 #26 0x00007fffdb17b738 in __libc_start_main (main=0x5555558d7874 <main>, argc=67, argv=0x7fffffffcf48, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffffcf38) at ../csu/libc-start.c:323

Add a monitor_cleanup() functions to remove all the monitors before
cleaning up the chardev. Note that we are "losing" some events that
used to be sent during atexit().

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20160801112343.29082-2-marcandre.lureau@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
8 years agoMerge remote-tracking branch 'remotes/elmarco/tags/leaks-for-2.7-pull-request' into...
Peter Maydell [Mon, 8 Aug 2016 11:41:38 +0000 (12:41 +0100)]
Merge remote-tracking branch 'remotes/elmarco/tags/leaks-for-2.7-pull-request' into staging

# gpg: Signature made Sun 07 Aug 2016 21:03:14 BST
# gpg:                using RSA key 0xDAE8E10975969CE5
# gpg: Good signature from "Marc-André Lureau <marcandre.lureau@redhat.com>"
# gpg:                 aka "Marc-André Lureau <marcandre.lureau@gmail.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg:          It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 87A9 BD93 3F87 C606 D276  F62D DAE8 E109 7596 9CE5

* remotes/elmarco/tags/leaks-for-2.7-pull-request:
  ahci: fix sglist leak on retry
  usb: free leaking path
  usb: free USBDevice.strings
  virtio-input: free config list
  qjson: free str
  ahci: free irqs array
  char: free MuxDriver when closing
  char: free the tcp connection data when closing
  numa: do not leak NumaOptions

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agoiotests: fix 109
Vladimir Sementsov-Ogievskiy [Wed, 3 Aug 2016 12:56:45 +0000 (15:56 +0300)]
iotests: fix 109

109 iotest is broken for raw after 0965a41e998ab820b5
[mirror: double performance of the bulk stage if the disc is full]

The problem is with finishing block-job with error: before specified
patch mirror was not very async and it created one big request at disk
start, this request finished with error and qemu produced
BLOCK_JOB_COMPLETED with zero progress.

After 0965a41, mirror starts several smaller requests in parallel, when
BLOCK_JOB_COMPLETED emited we have some successful non-zero progress.

This patch solves the issue by filtering out progress from 109 test
output.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
8 years agomirror: finish earlier on error
Vladimir Sementsov-Ogievskiy [Wed, 3 Aug 2016 12:56:44 +0000 (15:56 +0300)]
mirror: finish earlier on error

Stop to produce new async copy requests from mirror_iteration if
critical error (error action = BLOCK_ERROR_ACTION_REPORT) detected.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
8 years agotests: Test blockjob IDs
Alberto Garcia [Fri, 29 Jul 2016 14:31:41 +0000 (17:31 +0300)]
tests: Test blockjob IDs

Since 7f0317cfc8da6 we have API to specify the ID of block jobs and we
also guarantee that they are well-formed and unique.

This patch adds tests to check some common scenarios.

Signed-off-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
8 years agoblock/qdev: Let 'drive' property fall back to node name
Kevin Wolf [Thu, 4 Aug 2016 12:09:07 +0000 (14:09 +0200)]
block/qdev: Let 'drive' property fall back to node name

If a qdev block device is created with an anonymous BlockBackend (i.e.
a node name rather than a BB name was given for the drive property),
qdev used to return an empty string when the property was read. This
patch fixes it to return the node name instead.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
8 years agos390x/pci: fix null pointer bug
Yi Min Zhao [Fri, 5 Aug 2016 09:00:35 +0000 (17:00 +0800)]
s390x/pci: fix null pointer bug

We should make sure that it's not NULL firstly.

Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
8 years agoMerge remote-tracking branch 'remotes/dgibson/tags/ppc-for-2.7-20160808' into staging
Peter Maydell [Mon, 8 Aug 2016 10:32:01 +0000 (11:32 +0100)]
Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-2.7-20160808' into staging

ppc patch queue 2016-08-08

This batch has several last minute bug fixes to be merged for
qemu-2.7.

# gpg: Signature made Mon 08 Aug 2016 03:40:58 BST
# 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: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg:          It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 75F4 6586 AE61 A66C C44E  87DC 6C38 CACA 20D9 B392

* remotes/dgibson/tags/ppc-for-2.7-20160808:
  spapr: Fix undefined behaviour in spapr_tce_reset()
  macio: set res_count value to 0 after non-block ATAPI DMA transfers
  spapr: Correctly set query_hotpluggable_cpus hook based on machine version

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agoMerge remote-tracking branch 'remotes/rth/tags/pull-tcg-20160805' into staging
Peter Maydell [Mon, 8 Aug 2016 09:39:18 +0000 (10:39 +0100)]
Merge remote-tracking branch 'remotes/rth/tags/pull-tcg-20160805' into staging

indirect register lowering

# gpg: Signature made Fri 05 Aug 2016 17:34:53 BST
# gpg:                using RSA key 0xAD1270CC4DD0279B
# gpg: Good signature from "Richard Henderson <rth7680@gmail.com>"
# gpg:                 aka "Richard Henderson <rth@redhat.com>"
# gpg:                 aka "Richard Henderson <rth@twiddle.net>"
# Primary key fingerprint: 9CB1 8DDA F8E8 49AD 2AFC  16A4 AD12 70CC 4DD0 279B

* remotes/rth/tags/pull-tcg-20160805:
  tcg: Lower indirect registers in a separate pass
  tcg: Require liveness analysis
  tcg: Include liveness info in the dumps
  tcg: Compress dead_temps and mem_temps into a single array
  tcg: Fold life data into TCGOp
  tcg: Reorg TCGOp chaining
  tcg: Compress liveness data to 16 bits

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agoerror: Fix error_printf() calls lacking newlines
Markus Armbruster [Wed, 3 Aug 2016 11:37:54 +0000 (13:37 +0200)]
error: Fix error_printf() calls lacking newlines

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1470224274-31522-5-git-send-email-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
8 years agovfio: Use error_report() instead of error_printf() for errors
Markus Armbruster [Wed, 3 Aug 2016 11:37:53 +0000 (13:37 +0200)]
vfio: Use error_report() instead of error_printf() for errors

Cc: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1470224274-31522-4-git-send-email-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
8 years agocheckpatch: Fix newline detection in error_setg() & friends
Markus Armbruster [Wed, 3 Aug 2016 11:37:52 +0000 (13:37 +0200)]
checkpatch: Fix newline detection in error_setg() & friends

Commit 5d596c2's regexp assumes the error message string is the first
argument.  Correct for error_report(), wrong for all the others.
Relax the regexp to match newline in anywhere.  This might cause
additional false positives.

While there, update the list of error_reporting functions.

Cc: Jason J. Herne <jjherne@linux.vnet.ibm.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1470224274-31522-3-git-send-email-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
8 years agoerror: Strip trailing '\n' from error string arguments (again)
Markus Armbruster [Wed, 3 Aug 2016 11:37:51 +0000 (13:37 +0200)]
error: Strip trailing '\n' from error string arguments (again)

Commit 9af9e0f, 6daf194dbe62a2eb and 312fd5f got rid of a bunch, but
they keep coming back.  checkpatch.pl tries to flag them since commit
5d596c2, but it's not very good at it.  Offenders tracked down with
Coccinelle script scripts/coccinelle/err-bad-newline.cocci, an updated
version of the script from commit 312fd5f.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1470224274-31522-2-git-send-email-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
8 years agospapr: Fix undefined behaviour in spapr_tce_reset()
David Gibson [Mon, 8 Aug 2016 00:06:25 +0000 (10:06 +1000)]
spapr: Fix undefined behaviour in spapr_tce_reset()

When a TCE table (sPAPR IOMMU context) is in disabled state (which is true
by default for the 64-bit window), it has tcet->nb_table == 0 and
tcet->table == NULL.  However, on system reset, spapr_tce_reset() executes,
which unconditionally calls
        memset(tcet->table, 0, table_size);

We get away with this in practice, because it's a zero length memset(),
but memset() on a NULL pointer is undefined behaviour, so we should not
call it in this case.

Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
8 years agomacio: set res_count value to 0 after non-block ATAPI DMA transfers
Mark Cave-Ayland [Fri, 5 Aug 2016 07:30:02 +0000 (08:30 +0100)]
macio: set res_count value to 0 after non-block ATAPI DMA transfers

res_count should be set to the number of outstanding bytes after a DBDMA
request. Unfortunately this wasn't being set to zero by the non-block
transfer codepath meaning drivers that checked the descriptor result for
such requests (e.g reading the CDROM TOC) would assume from a non-zero result
that the transfer had failed.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
8 years agospapr: Correctly set query_hotpluggable_cpus hook based on machine version
David Gibson [Fri, 5 Aug 2016 06:25:33 +0000 (16:25 +1000)]
spapr: Correctly set query_hotpluggable_cpus hook based on machine version

Prior to c8721d3 "spapr: Error out when CPU hotplug is attempted on older
pseries machines", attempting to use query-hotpluggable-cpus on pseries-2.6
and earlier machine types would SEGV.

That change fixed that, but due to some unexpected interactions in init
order and a brown-paper-bag worthy failure to test, it accidentally
disabled query-hotpluggable-cpus for all pseries machine types, including
the current one which should allow it.

In fact, query_hotpluggable_cpus needs to be non-NULL when and only when
the dr_cpu_enabled flag in sPAPRMachineClass is set, which makes
dr_cpu_enabled itself redundant.

This patch removes dr_cpu_enabled, instead directly setting
query_hotpluggable_cpus from the machine class_init functions, and using
that to determine the availability of CPU hotplug when necessary.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
8 years agoahci: fix sglist leak on retry
Marc-André Lureau [Tue, 19 Jul 2016 06:47:46 +0000 (10:47 +0400)]
ahci: fix sglist leak on retry

ahci-test /x86_64/ahci/io/dma/lba28/retry triggers the following leak:

Direct leak of 16 byte(s) in 1 object(s) allocated from:
    #0 0x7fc4b2a25e20 in malloc (/lib64/libasan.so.3+0xc6e20)
    #1 0x7fc4993bce58 in g_malloc (/lib64/libglib-2.0.so.0+0x4ee58)
    #2 0x556a187d4b34 in ahci_populate_sglist hw/ide/ahci.c:896
    #3 0x556a187d8237 in ahci_dma_prepare_buf hw/ide/ahci.c:1367
    #4 0x556a187b5a1a in ide_dma_cb hw/ide/core.c:844
    #5 0x556a187d7eec in ahci_start_dma hw/ide/ahci.c:1333
    #6 0x556a187b650b in ide_start_dma hw/ide/core.c:921
    #7 0x556a187b61e6 in ide_sector_start_dma hw/ide/core.c:911
    #8 0x556a187b9e26 in cmd_write_dma hw/ide/core.c:1486
    #9 0x556a187bd519 in ide_exec_cmd hw/ide/core.c:2027
    #10 0x556a187d71c5 in handle_reg_h2d_fis hw/ide/ahci.c:1204
    #11 0x556a187d7681 in handle_cmd hw/ide/ahci.c:1254
    #12 0x556a187d168a in check_cmd hw/ide/ahci.c:510
    #13 0x556a187d0afc in ahci_port_write hw/ide/ahci.c:314
    #14 0x556a187d105d in ahci_mem_write hw/ide/ahci.c:435
    #15 0x556a1831d959 in memory_region_write_accessor /home/elmarco/src/qemu/memory.c:525
    #16 0x556a1831dc35 in access_with_adjusted_size /home/elmarco/src/qemu/memory.c:591
    #17 0x556a18323ce3 in memory_region_dispatch_write /home/elmarco/src/qemu/memory.c:1262
    #18 0x556a1828cf67 in address_space_write_continue /home/elmarco/src/qemu/exec.c:2578
    #19 0x556a1828d20b in address_space_write /home/elmarco/src/qemu/exec.c:2635
    #20 0x556a1828d92b in address_space_rw /home/elmarco/src/qemu/exec.c:2737
    #21 0x556a1828daf7 in cpu_physical_memory_rw /home/elmarco/src/qemu/exec.c:2746
    #22 0x556a183068d3 in cpu_physical_memory_write /home/elmarco/src/qemu/include/exec/cpu-common.h:72
    #23 0x556a18308194 in qtest_process_command /home/elmarco/src/qemu/qtest.c:382
    #24 0x556a18309999 in qtest_process_inbuf /home/elmarco/src/qemu/qtest.c:573
    #25 0x556a18309a4a in qtest_read /home/elmarco/src/qemu/qtest.c:585
    #26 0x556a18598b85 in qemu_chr_be_write_impl /home/elmarco/src/qemu/qemu-char.c:387
    #27 0x556a18598c52 in qemu_chr_be_write /home/elmarco/src/qemu/qemu-char.c:399
    #28 0x556a185a2afa in tcp_chr_read /home/elmarco/src/qemu/qemu-char.c:2902
    #29 0x556a18cbaf52 in qio_channel_fd_source_dispatch io/channel-watch.c:84

Follow John Snow recommendation:
  Everywhere else ncq_err is used, it is accompanied by a list cleanup
  except for ncq_cb, which is the case you are fixing here.

  Move the sglist destruction inside of ncq_err and then delete it from
  the other two locations to keep it tidy.

  Call dma_buf_commit in ide_dma_cb after the early return. Though, this
  is also a little wonky because this routine does more than clear the
  list, but it is at the moment the centralized "we're done with the
  sglist" function and none of the other side effects that occur in
  dma_buf_commit will interfere with the reset that occurs from
  ide_restart_bh, I think

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
8 years agousb: free leaking path
Marc-André Lureau [Fri, 15 Jul 2016 09:48:13 +0000 (11:48 +0200)]
usb: free leaking path

qdev_get_dev_path() returns an allocated string, free it when no longer
needed.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
8 years agousb: free USBDevice.strings
Marc-André Lureau [Fri, 15 Jul 2016 09:14:07 +0000 (11:14 +0200)]
usb: free USBDevice.strings

The list is created during instance init and further populated with
usb_desc_set_string(). Clear it when unrealizing the device.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
8 years agovirtio-input: free config list
Marc-André Lureau [Fri, 15 Jul 2016 08:55:12 +0000 (10:55 +0200)]
virtio-input: free config list

Clear the list when finalizing. The list is created during realize with
virtio_input_idstr_config() and later by further calls to
virtio_input_init_config() and virtio_input_add_config().

This leak can be reproduced with device-introspect-test -p
/x86_64/device/introspect/concrete.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
8 years agoqjson: free str
Marc-André Lureau [Fri, 15 Jul 2016 08:41:03 +0000 (10:41 +0200)]
qjson: free str

Release the qstring allocated in qjson_new().

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
8 years agoahci: free irqs array
Marc-André Lureau [Thu, 14 Jul 2016 16:03:40 +0000 (18:03 +0200)]
ahci: free irqs array

Each irq is referenced by the IDEBus in ide_init2(), thus we can free
the no longer used array.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Acked-by: John Snow <jsnow@redhat.com>
8 years agochar: free MuxDriver when closing
Marc-André Lureau [Thu, 14 Jul 2016 02:14:13 +0000 (04:14 +0200)]
char: free MuxDriver when closing

Similarly to other chr_close callbacks, free char type specific data.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
8 years agochar: free the tcp connection data when closing
Marc-André Lureau [Thu, 14 Jul 2016 01:21:37 +0000 (03:21 +0200)]
char: free the tcp connection data when closing

Make sure the connection data got freed when closing the chardev, to
avoid leaks. Introduce tcp_chr_free_connection() to clean all connection
related data, and move some tcp_chr_close() clean-ups there.

(while at it, set write_msgfds_num to 0 when clearing array in
tcp_set_msgfds())

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
8 years agonuma: do not leak NumaOptions
Marc-André Lureau [Wed, 13 Jul 2016 00:39:13 +0000 (02:39 +0200)]
numa: do not leak NumaOptions

In all cases, call qapi_free_NumaOptions(), by using a common ending
block.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
8 years agotcg: Lower indirect registers in a separate pass
Richard Henderson [Fri, 24 Jun 2016 03:34:33 +0000 (20:34 -0700)]
tcg: Lower indirect registers in a separate pass

Rather than rely on recursion during the middle of register allocation,
lower indirect registers to loads and stores off the indirect base into
plain temps.

For an x86_64 host, with sufficient registers, this results in identical
code, modulo the actual register assignments.

For an i686 host, with insufficient registers, this means that temps can
be (temporarily) spilled to the stack in order to satisfy an allocation.
This as opposed to the possibility of not being able to spill, to allocate
a register for the indirect base, in order to perform a spill.

Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
8 years agotcg: Require liveness analysis
Richard Henderson [Wed, 22 Jun 2016 21:24:32 +0000 (14:24 -0700)]
tcg: Require liveness analysis

Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
8 years agotcg: Include liveness info in the dumps
Richard Henderson [Fri, 24 Jun 2016 02:15:55 +0000 (19:15 -0700)]
tcg: Include liveness info in the dumps

Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
8 years agotcg: Compress dead_temps and mem_temps into a single array
Richard Henderson [Fri, 24 Jun 2016 03:34:22 +0000 (20:34 -0700)]
tcg: Compress dead_temps and mem_temps into a single array

We only need two bits per temporary.  Fold the two bytes into one,
and reduce the memory and cachelines required during compilation.

Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
8 years agotcg: Fold life data into TCGOp
Richard Henderson [Thu, 23 Jun 2016 03:43:29 +0000 (20:43 -0700)]
tcg: Fold life data into TCGOp

Reduce the size of other bitfields to make room.
This reduces the cache footprint of compilation.

Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
8 years agotcg: Reorg TCGOp chaining
Richard Henderson [Thu, 23 Jun 2016 02:42:31 +0000 (19:42 -0700)]
tcg: Reorg TCGOp chaining

Instead of using -1 as end of chain, use 0, and link through the 0
entry as a fully circular double-linked list.

Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
8 years agotcg: Compress liveness data to 16 bits
Richard Henderson [Wed, 22 Jun 2016 22:46:09 +0000 (15:46 -0700)]
tcg: Compress liveness data to 16 bits

This reduces both memory usage and per-insn cacheline usage
during code generation.

Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
8 years agotests: Rename qtests which have names ending "error"
Peter Maydell [Thu, 4 Aug 2016 10:39:38 +0000 (11:39 +0100)]
tests: Rename qtests which have names ending "error"

We have three qtest tests which have test names ending with "error".
This is awkward because the output of verbose test runs looks like
  /crypto/task/error:                                                  OK
  /crypto/task/thread_error:                                           OK

which gives false positives if you are grepping build logs for
errors by looking for "error:". Since there are only three tests
with this problem, just rename them all to 'failure' instead.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Message-id: 1470307178-22848-1-git-send-email-peter.maydell@linaro.org

8 years agowxx: Fix handling of files used for character devices
Stefan Weil [Tue, 2 Aug 2016 05:14:37 +0000 (07:14 +0200)]
wxx: Fix handling of files used for character devices

On Windows, such files were not truncated like on all other hosts.
Now we also test whether truncation is needed when running on Windows.

The append case was also incorrect because it needs a different value
for the desired access mode.

Reported-by: Benjamin David Lunt <fys@fysnet.net>
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1470114877-1466-1-git-send-email-sw@weilnetz.de
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agoMerge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging
Peter Maydell [Fri, 5 Aug 2016 12:05:29 +0000 (13:05 +0100)]
Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging

Block layer patches for 2.7.0-rc2

# gpg: Signature made Fri 05 Aug 2016 10:30:12 BST
# gpg:                using RSA key 0x7F09B272C88F2FD6
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>"
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74  56FE 7F09 B272 C88F 2FD6

* remotes/kevin/tags/for-upstream:
  nvme: bump PCI revision
  nvme: fix identify to be NVMe 1.1 compliant
  block: Accept any target node for transactional blockdev-backup

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agoMerge remote-tracking branch 'remotes/stefanha/tags/block-pull-request' into staging
Peter Maydell [Fri, 5 Aug 2016 10:44:56 +0000 (11:44 +0100)]
Merge remote-tracking branch 'remotes/stefanha/tags/block-pull-request' into staging

# gpg: Signature made Fri 05 Aug 2016 10:24:34 BST
# gpg:                using RSA key 0x9CA4ABB381AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg:                 aka "Stefan Hajnoczi <stefanha@gmail.com>"
# Primary key fingerprint: 8695 A8BF D3F9 7CDA AC35  775A 9CA4 ABB3 81AB 73C8

* remotes/stefanha/tags/block-pull-request:
  virtio-blk: Remove stale comment about draining
  virtio-blk: Release s->rq queue at system_reset
  throttle: Test burst limits lower than the normal limits
  throttle: Don't allow burst limits to be lower than the normal limits
  block/parallels: check new image size

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agoMerge remote-tracking branch 'remotes/famz/tags/docker-pull-request' into staging
Peter Maydell [Fri, 5 Aug 2016 10:16:30 +0000 (11:16 +0100)]
Merge remote-tracking branch 'remotes/famz/tags/docker-pull-request' into staging

# gpg: Signature made Fri 05 Aug 2016 09:58:50 BST
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* remotes/famz/tags/docker-pull-request:
  docker: Add "--enable-werror" to configure command line
  docker: Be compatible with older docker

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agoMerge remote-tracking branch 'remotes/sstabellini/tags/xen-20160804-tag' into staging
Peter Maydell [Fri, 5 Aug 2016 09:23:12 +0000 (10:23 +0100)]
Merge remote-tracking branch 'remotes/sstabellini/tags/xen-20160804-tag' into staging

Xen 2016/08/04

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# Primary key fingerprint: D04E 33AB A51F 67BA 07D3  0AEA 894F 8F48 70E1 AE90

* remotes/sstabellini/tags/xen-20160804-tag:
  Xen PCI passthrough: fix passthrough failure when no interrupt pin

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agovirtio-blk: Remove stale comment about draining
Fam Zheng [Thu, 4 Aug 2016 02:44:14 +0000 (10:44 +0800)]
virtio-blk: Remove stale comment about draining

This is stale after commit 6e40b3bf (virtio-blk: Use blk_drain() to
drain IO requests), remove it.

Suggested-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Message-id: 1470278654-13525-3-git-send-email-famz@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
8 years agovirtio-blk: Release s->rq queue at system_reset
Fam Zheng [Thu, 4 Aug 2016 02:44:13 +0000 (10:44 +0800)]
virtio-blk: Release s->rq queue at system_reset

At system_reset, there is no point in retrying the queued request,
because the driver that issued the request won't be around any more.

Analyzed-by: Laszlo Ersek <lersek@redhat.com>
Reported-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Message-id: 1470278654-13525-2-git-send-email-famz@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
8 years agothrottle: Test burst limits lower than the normal limits
Alberto Garcia [Thu, 28 Jul 2016 08:08:13 +0000 (11:08 +0300)]
throttle: Test burst limits lower than the normal limits

This checks that making FOO_max lower than FOO is not allowed.

We could also forbid having FOO_max == FOO, but that doesn't have
any odd side effects and it would require us to update several other
tests, so let's keep it simple.

Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 2f90f9ee58aa14b7bd985f67c5996b06e0ab6c19.1469693110.git.berto@igalia.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
8 years agothrottle: Don't allow burst limits to be lower than the normal limits
Alberto Garcia [Thu, 28 Jul 2016 08:08:12 +0000 (11:08 +0300)]
throttle: Don't allow burst limits to be lower than the normal limits

Setting FOO_max to a value that is lower than FOO does not make
sense, and it produces odd results depending on the value of
FOO_max_length. Although the user should not set that configuration
in the first place it's better to reject it explicitly.

https://bugzilla.redhat.com/show_bug.cgi?id=1355665

Signed-off-by: Alberto Garcia <berto@igalia.com>
Reported-by: Gu Nini <ngu@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 663d5aca406060e31f80d8113f77b6feee63b919.1469693110.git.berto@igalia.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
8 years agoblock/parallels: check new image size
Klim Kireev [Wed, 27 Jul 2016 17:08:20 +0000 (20:08 +0300)]
block/parallels: check new image size

Before this patch incorrect image could be created via qemu-img
(Example: qemu-img create -f parallels -o size=4096T hack.img),
incorrect images cannot be used due to overflow in main image structure.

This patch add check of size in image creation.

After reading size it compare it with UINT32_MAX * cluster_size.

Signed-off-by: Klim Kireev <proffk@virtuozzo.mipt.ru>
Signed-off-by: Denis V. Lunev <den@openvz.org>
Message-id: 1469639300-12155-1-git-send-email-den@openvz.org
CC: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
8 years agonvme: bump PCI revision
Christoph Hellwig [Thu, 4 Aug 2016 19:42:15 +0000 (21:42 +0200)]
nvme: bump PCI revision

The broken Identify implementation in earlier Qemu versions means we
need to blacklist it from issueing the NVMe 1.1 Identify Namespace List
command.  As we want to be able to use it in newer Qemu versions we need
a way to identify those.  Bump the PCI revision as a guest visible
indicator of this bug fix.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
8 years agonvme: fix identify to be NVMe 1.1 compliant
Christoph Hellwig [Thu, 4 Aug 2016 19:42:14 +0000 (21:42 +0200)]
nvme: fix identify to be NVMe 1.1 compliant

NVMe 1.1 requires devices to implement a Namespace List subcommand of
the identify command.  Qemu not only not implements this features, but
also misinterprets it as an Identify Controller request.  Due to this
any OS trying to use the Namespace List will fail the probe.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
8 years agoblock: Accept any target node for transactional blockdev-backup
Kevin Wolf [Tue, 2 Aug 2016 17:22:04 +0000 (19:22 +0200)]
block: Accept any target node for transactional blockdev-backup

Commit 0d978913 changed blockdev-backup to accept arbitrary node names
instead of device names (i.e. root nodes) for the backup target.
However, it forgot to make the same change in transactions and to update
the documentation. This patch fixes these omissions.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
8 years agodocker: Add "--enable-werror" to configure command line
Fam Zheng [Mon, 25 Jul 2016 13:31:50 +0000 (21:31 +0800)]
docker: Add "--enable-werror" to configure command line

We don't have .git in the docker checkout, add this to enable -Werror
explicitly.

Signed-off-by: Fam Zheng <famz@redhat.com>
Message-id: 1469453510-658-1-git-send-email-famz@redhat.com

8 years agodocker: Be compatible with older docker
Fam Zheng [Wed, 3 Aug 2016 05:42:08 +0000 (13:42 +0800)]
docker: Be compatible with older docker

By not using "--format" with docker images command.

The option is not available on RHEL 7 docker command. Use an awk
matching command instead.

Reported-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
Message-Id: <1470202928-3392-1-git-send-email-famz@redhat.com>

8 years agoXen PCI passthrough: fix passthrough failure when no interrupt pin
Bruce Rogers [Wed, 27 Jul 2016 15:30:48 +0000 (09:30 -0600)]
Xen PCI passthrough: fix passthrough failure when no interrupt pin

Commit 5a11d0f7 mistakenly converted a log message into an error
condition when no pin interrupt is found for the pci device being
passed through. Revert that part of the commit.

Signed-off-by: Bruce Rogers <brogers@suse.com>
Signed-off-by: Stefano Stabellini <sstabellini@kernel.org>
Acked-by: Anthony PERARD <anthony.perard@citrix.com>
8 years agoMerge remote-tracking branch 'remotes/riku/tags/pull-linux-user-20160804' into staging
Peter Maydell [Thu, 4 Aug 2016 17:36:05 +0000 (18:36 +0100)]
Merge remote-tracking branch 'remotes/riku/tags/pull-linux-user-20160804' into staging

linux-user important fixes for 2.7

# gpg: Signature made Thu 04 Aug 2016 15:10:57 BST
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# gpg: Good signature from "Riku Voipio <riku.voipio@iki.fi>"
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* remotes/riku/tags/pull-linux-user-20160804:
  linux-user: Handle brk() attempts with very large sizes
  linux-user: Fix target_semid_ds structure definition
  linux-user: Don't write off end of new_utsname buffer
  linux-user: Fix memchr() argument in open_self_cmdline()
  linux-user: Use correct alignment for long long on i386 guests

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agolinux-user: Handle brk() attempts with very large sizes
Peter Maydell [Fri, 22 Jul 2016 12:41:52 +0000 (13:41 +0100)]
linux-user: Handle brk() attempts with very large sizes

In do_brk(), we were inadvertently truncating the size
of a requested brk() from the guest by putting it into an
'int' variable. This meant that we would incorrectly report
success back to the guest rather than a failed allocation,
typically resulting in the guest then segfaulting. Use
abi_ulong instead.

This fixes a crash in the '31370.cc' test in the gcc libstdc++ test
suite (the test case starts by trying to allocate a very large
size and reduces the size until the allocation succeeds).

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
8 years agolinux-user: Fix target_semid_ds structure definition
Peter Maydell [Fri, 15 Jul 2016 15:50:47 +0000 (16:50 +0100)]
linux-user: Fix target_semid_ds structure definition

The target_semid_ds structure is not correct for all
architectures: the padding fields should only exist for:
 * 32-bit ABIs
 * x86

It is also misnamed, since it is following the kernel
semid64_ds structure (QEMU doesn't support the legacy
semid_ds structure at all). Rename the struct, provide
a correct generic definition and allow the oddball x86
architecture to provide its own version.

This fixes broken SYSV semaphores for all our 64-bit
architectures except x86 and ppc.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
8 years agolinux-user: Don't write off end of new_utsname buffer
Peter Maydell [Tue, 12 Jul 2016 12:02:16 +0000 (13:02 +0100)]
linux-user: Don't write off end of new_utsname buffer

Use g_strlcpy() rather than strcpy() to copy the uname string
into the structure we return to the guest for the uname syscall.
This avoids overrunning the buffer if the user passed us an
overlong string via the QEMU command line.

We fix a comment typo while we're in the neighbourhood.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
8 years agolinux-user: Fix memchr() argument in open_self_cmdline()
Peter Maydell [Tue, 12 Jul 2016 12:02:19 +0000 (13:02 +0100)]
linux-user: Fix memchr() argument in open_self_cmdline()

In open_self_cmdline() we look for a 0 in the buffer we read
from /prc/self/cmdline. We were incorrectly passing the length
of our buf[] array to memchr() as the length to search, rather
than the number of bytes we actually read into it, which could
be shorter. This was spotted by Coverity (because it could
result in our trying to pass a negative length argument to
write()).

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
8 years agolinux-user: Use correct alignment for long long on i386 guests
Peter Maydell [Thu, 28 Jul 2016 11:57:59 +0000 (12:57 +0100)]
linux-user: Use correct alignment for long long on i386 guests

For i386, the ABI specifies that 'long long' (8 byte values)
need only be 4 aligned, but we were requiring them to be
8-aligned. This meant we were laying out the target_epoll_event
structure wrongly. Add a suitable ifdef to abitypes.h to
specify the i386-specific alignment requirement.

Reported-by: Icenowy Zheng <icenowy@aosc.xyz>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
8 years agoMerge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging
Peter Maydell [Thu, 4 Aug 2016 09:24:27 +0000 (10:24 +0100)]
Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging

* xsetbv fix (x86 targets TCG)
* remove unused functions
* qht segfault and memory leak fixes
* NBD fixes
* Fix for non-power-of-2 discard granularity
* Memory hotplug fixes
* Migration regressions
* IOAPIC fixes and (disabled by default) EOI register support
* Various other small fixes

# gpg: Signature made Wed 03 Aug 2016 18:01:05 BST
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# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>"
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4  E2F7 7E15 100C CD36 69B1
#      Subkey fingerprint: F133 3857 4B66 2389 866C  7682 BFFB D25F 78C7 AE83

* remotes/bonzini/tags/for-upstream: (25 commits)
  util: Fix assertion in iov_copy() upon zero 'bytes' and non-zero 'offset'
  qdev: Fix use after free in qdev_init_nofail error path
  Reorganize help output of '-display' option
  x86: ioapic: add support for explicit EOI
  x86: ioapic: ignore level irq during processing
  apic: fix broken migration for kvm-apic
  fw_cfg: Make base type "fw_cfg" abstract
  block: Cater to iscsi with non-power-of-2 discard
  osdep: Document differences in rounding macros
  nbd: Limit nbdflags to 16 bits
  nbd: Fix bad flag detection on server
  i2c: fix migration regression introduced by broadcast support
  mptsas: really fix migration compatibility
  qdist: return "(empty)" instead of NULL when printing an empty dist
  qdist: use g_renew and g_new instead of g_realloc and g_malloc.
  qdist: fix memory leak during binning
  target-i386: fix typo in xsetbv implementation
  qht: do not segfault when gathering stats from an uninitialized qht
  util: Drop inet_listen()
  util: drop unix_nonblocking_connect()
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agoMerge remote-tracking branch 'remotes/kraxel/tags/pull-vnc-20160803-1' into staging
Peter Maydell [Wed, 3 Aug 2016 17:22:51 +0000 (18:22 +0100)]
Merge remote-tracking branch 'remotes/kraxel/tags/pull-vnc-20160803-1' into staging

vnc: fixes for "-vnc none".

# gpg: Signature made Wed 03 Aug 2016 16:33:07 BST
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# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>"
# Primary key fingerprint: A032 8CFF B93A 17A7 9901  FE7D 4CB6 D8EE D3E8 7138

* remotes/kraxel/tags/pull-vnc-20160803-1:
  vnc: ensure connection sharing/limits is always configured
  vnc: fix crash when vnc_server_info_get has an error
  vnc: don't crash getting server info if lsock is NULL

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agoutil: Fix assertion in iov_copy() upon zero 'bytes' and non-zero 'offset'
Shmulik Ladkani [Tue, 2 Aug 2016 09:41:20 +0000 (12:41 +0300)]
util: Fix assertion in iov_copy() upon zero 'bytes' and non-zero 'offset'

In cases where iov_copy() is passed with zero 'bytes' argument and a
non-zero 'offset' argument, nothing gets copied - as expected.

However no copy iterations are performed, so 'offset' is left
unaltered, leading to the final assert(offset == 0) to fail.

Instead, change the loop condition to continue as long as 'offset || bytes',
similar to other iov_* functions.

This ensures 'offset' gets zeroed (even if no actual copy is made),
unless it is beyond end of source iov - which is asserted.

Signed-off-by: Shmulik Ladkani <shmulik.ladkani@ravellosystems.com>
Message-Id: <1470130880-1050-1-git-send-email-shmulik.ladkani@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
8 years agoqdev: Fix use after free in qdev_init_nofail error path
Fam Zheng [Tue, 2 Aug 2016 03:41:41 +0000 (11:41 +0800)]
qdev: Fix use after free in qdev_init_nofail error path

Since 69382d8b (qdev: Fix object reference leak in case device.realize()
fails), object_property_set_bool could release the object. The error
path wants the type name, so hold an reference before realizing it.

Cc: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
Message-Id: <1470109301-12966-1-git-send-email-famz@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
8 years agoReorganize help output of '-display' option
Robert Ho [Tue, 26 Jul 2016 10:17:11 +0000 (18:17 +0800)]
Reorganize help output of '-display' option

The '-display' help information is not very correct. This patch sort
it a little.
Also, in its help information, reveals what implicit display option
will be chosen if no definition.

Signed-off-by: Robert Ho <robert.hu@intel.com>
Message-Id: <1469528231-26206-1-git-send-email-robert.hu@intel.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
8 years agox86: ioapic: add support for explicit EOI
Peter Xu [Mon, 1 Aug 2016 13:59:19 +0000 (21:59 +0800)]
x86: ioapic: add support for explicit EOI

Some old Linux kernels (upstream before v4.0), or any released RHEL
kernels has problem in sending APIC EOI when IR is enabled. Meanwhile,
many of them only support explicit EOI for IOAPIC, which is only
introduced in IOAPIC version 0x20. This patch provide a way to boost
QEMU IOAPIC to version 0x20, in order for QEMU to correctly receive EOI
messages.

Without boosting IOAPIC version to 0x20, kernels before commit d32932d
("x86/irq: Convert IOAPIC to use hierarchical irqdomain interfaces")
will have trouble enabling both IR and level-triggered interrupt devices
(like e1000).

To upgrade IOAPIC to version 0x20, we need to specify:

  -global ioapic.version=0x20

To be compatible with old systems, 0x11 will still be the default IOAPIC
version. Here 0x11 and 0x20 are the only versions to be supported.

One thing to mention: this patch only applies to emulated IOAPIC. It
does not affect kernel IOAPIC behavior.

Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <1470059959-372-1-git-send-email-peterx@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
8 years agox86: ioapic: ignore level irq during processing
Peter Xu [Sun, 31 Jul 2016 14:18:05 +0000 (22:18 +0800)]
x86: ioapic: ignore level irq during processing

For level triggered interrupts, we will get Remote IRR bit cleared after
guest kernel finished processing specific request. Before that, we
should ignore the same interrupt from triggering again.

Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <1469974685-4144-1-git-send-email-peterx@redhat.com>
[Push new "if" up so that it covers KVM split irqchip as well. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
8 years agoapic: fix broken migration for kvm-apic
Igor Mammedov [Fri, 29 Jul 2016 13:55:42 +0000 (15:55 +0200)]
apic: fix broken migration for kvm-apic

commit f6e98444 (apic: Use apic_id as apic's migration instance_id)
breaks migration when in kernel irqchip is used for 2.6 and older
machine types.

It applies compat property only for userspace 'apic' type
instead of applying it to all apic types inherited from
'apic-common' type as it was supposed to do.

Fix it by setting compat property 'legacy-instance-id' for
'apic-common' type which affects inherited types (i.e. not
only 'apic' but also 'kvm-apic' types)

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <1469800542-11402-1-git-send-email-imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
8 years agofw_cfg: Make base type "fw_cfg" abstract
Markus Armbruster [Fri, 29 Jul 2016 07:29:13 +0000 (09:29 +0200)]
fw_cfg: Make base type "fw_cfg" abstract

Missed when commit 5712db6 split off "fw_cfg_io" and "fw_cfg_mem".

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1469777353-9383-1-git-send-email-armbru@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
8 years agoblock: Cater to iscsi with non-power-of-2 discard
Eric Blake [Thu, 21 Jul 2016 19:34:48 +0000 (13:34 -0600)]
block: Cater to iscsi with non-power-of-2 discard

Dell Equallogic iSCSI SANs have a very unusual advertised geometry:

$ iscsi-inq -e 1 -c $((0xb0)) iscsi://XXX/0
wsnz:0
maximum compare and write length:1
optimal transfer length granularity:0
maximum transfer length:0
optimal transfer length:0
maximum prefetch xdread xdwrite transfer length:0
maximum unmap lba count:30720
maximum unmap block descriptor count:2
optimal unmap granularity:30720
ugavalid:1
unmap granularity alignment:0
maximum write same length:30720

which says that both the maximum and the optimal discard size
is 15M.  It is not immediately apparent if the device allows
discard requests not aligned to the optimal size, nor if it
allows discards at a finer granularity than the optimal size.

I tried to find details in the SCSI Commands Reference Manual
Rev. A on what valid values of maximum and optimal sizes are
permitted, but while that document mentions a "Block Limits
VPD Page", I couldn't actually find documentation of that page
or what values it would have, or if a SCSI device has an
advertisement of its minimal unmap granularity.  So it is not
obvious to me whether the Dell Equallogic device is compliance
with the SCSI specification.

Fortunately, it is easy enough to support non-power-of-2 sizing,
even if it means we are less efficient than truly possible when
targetting that device (for example, it means that we refuse to
unmap anything that is not a multiple of 15M and aligned to a
15M boundary, even if the device truly does support a smaller
granularity where unmapping actually works).

Reported-by: Peter Lieven <pl@kamp.de>
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1469129688-22848-5-git-send-email-eblake@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>