During 'qemu-img create ... 2>&1', if --quiet is not in force, we can
end up with buffered I/O in stdout that was produced before failure,
but which appears in output after failure. This is confusing; the fix
is to flush stdout prior to attempting anything that might produce an
error message. Several iotests demonstrate the resulting ordering
change now that the merged outputs now reflect chronology. (An even
better fix would be to avoid printf from within block.c altogether,
but that's much more invasive...)
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200706203954.341758-2-eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Especially when O_DIRECT is used with image files so that the page cache
indirection can't cause a merge of allocating requests, the file will
fragment on the file system layer, with a potentially very small
fragment size (this depends on the requests the guest sent).
On Linux, fragmentation can be reduced by setting an extent size hint
when creating the file (at least on XFS, it can't be set any more after
the first extent has been allocated), basically giving raw files a
"cluster size" for allocation.
This adds a create option to set the extent size hint, and changes the
default from not setting a hint to setting it to 1 MB. The main reason
why qcow2 defaults to smaller cluster sizes is that COW becomes more
expensive, which is not an issue with raw files, so we can choose a
larger size. The tradeoff here is only potentially wasted disk space.
For qcow2 (or other image formats) over file-posix, the advantage should
even be greater because they grow sequentially without leaving holes, so
there won't be wasted space. Setting even larger extent size hints for
such images may make sense. This can be done with the new option, but
let's keep the default conservative for now.
The effect is very visible with a test that intentionally creates a
badly fragmented file with qemu-img bench (the time difference while
creating the file is already remarkable) and then looks at the number of
extents and the time a simple "qemu-img map" takes.
Without an extent size hint:
$ ./qemu-img create -f raw -o extent_size_hint=0 ~/tmp/test.raw 10G
Formatting '/home/kwolf/tmp/test.raw', fmt=raw size=10737418240 extent_size_hint=0
$ ./qemu-img bench -f raw -t none -n -w ~/tmp/test.raw -c 1000000 -S 8192 -o 0
Sending 1000000 write requests, 4096 bytes each, 64 in parallel (starting at offset 0, step size 8192)
Run completed in 25.848 seconds.
$ ./qemu-img bench -f raw -t none -n -w ~/tmp/test.raw -c 1000000 -S 8192 -o 4096
Sending 1000000 write requests, 4096 bytes each, 64 in parallel (starting at offset 4096, step size 8192)
Run completed in 19.616 seconds.
$ filefrag ~/tmp/test.raw
/home/kwolf/tmp/test.raw: 2000000 extents found
$ time ./qemu-img map ~/tmp/test.raw
Offset Length Mapped to File
0 0x1e8480000 0 /home/kwolf/tmp/test.raw
real 0m1,279s
user 0m0,043s
sys 0m1,226s
With the new default extent size hint of 1 MB:
$ ./qemu-img create -f raw -o extent_size_hint=1M ~/tmp/test.raw 10G
Formatting '/home/kwolf/tmp/test.raw', fmt=raw size=10737418240 extent_size_hint=1048576
$ ./qemu-img bench -f raw -t none -n -w ~/tmp/test.raw -c 1000000 -S 8192 -o 0
Sending 1000000 write requests, 4096 bytes each, 64 in parallel (starting at offset 0, step size 8192)
Run completed in 11.833 seconds.
$ ./qemu-img bench -f raw -t none -n -w ~/tmp/test.raw -c 1000000 -S 8192 -o 4096
Sending 1000000 write requests, 4096 bytes each, 64 in parallel (starting at offset 4096, step size 8192)
Run completed in 10.155 seconds.
$ filefrag ~/tmp/test.raw
/home/kwolf/tmp/test.raw: 178 extents found
$ time ./qemu-img map ~/tmp/test.raw
Offset Length Mapped to File
0 0x1e8480000 0 /home/kwolf/tmp/test.raw
real 0m0,061s
user 0m0,040s
sys 0m0,014s
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20200707142329.48303-1-kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
The actual disk space used by an image can vary between filesystems and
depending on other settings like an extent size hint. Replace the one
call of "$QEMU_IMG info" and the associated one-off sed filter with the
more standard "_img_info" and the standard filter from common.filter.
Apart from turning "vmdk" into "IMGFMT" and changing the placeholder for
cid fields, this only removes the "disk size" line.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Limiting each loop iteration of qemu-img map to 1 GB was arbitrary from
the beginning, though it only cut the maximum in half then because the
interface was a signed 32 bit byte count. These days, bdrv_block_status
supports a 64 bit byte count, so the arbitrary limit is even worse.
On file-posix, bdrv_block_status() eventually maps to SEEK_HOLE and
SEEK_DATA, which don't support a limit, but always do all of the work
necessary to find the start of the next hole/data. Much of this work may
be repeated if we don't use this information fully, but query with an
only slightly larger offset in the next loop iteration. Therefore, if
bdrv_block_status() is called in a loop, it should always pass the
full number of bytes that the whole loop is interested in.
This removes the arbitrary limit and speeds up 'qemu-img map'
significantly on heavily fragmented images.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20200707144629.51235-1-kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Not only is it a bit stupid to try to filter multi-line "Formatting"
output (because we only need it for a single test, which can easily be
amended to no longer need it), it is also problematic when there can be
output after a "Formatting" line that we do not want to filter as if it
were part of it.
So rename _filter_img_create to _do_filter_img_create, let it filter
only a single line, and let _filter_img_create loop over all input
lines, calling _do_filter_img_create only on those that match
/^Formatting/ (basically, what _filter_img_create_in_qmp did already).
(And fix 020 to work with that.)
Reported-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200709110205.310942-1-mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* hw/arm/bcm2836: Remove unused 'cpu_type' field
* target/arm: Fix mtedesc for do_mem_zpz
* Add the ability to change the FEC PHY MDIO device number on i.MX25/i.MX6/i.MX7
* target/arm: Don't do raw writes for PMINTENCLR
* virtio-iommu: Fix coverity issue in virtio_iommu_handle_command()
* build: Fix various issues with building on Haiku
* target/nios2: fix wrctl behaviour when using icount
* hw/arm/tosa: Encapsulate misc GPIO handling in a device
* hw/arm/palm.c: Encapsulate misc GPIO handling in a device
* hw/arm/aspeed: Do not create and attach empty SD cards by default
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Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20200713' into staging
target-arm queue:
* hw/arm/bcm2836: Remove unused 'cpu_type' field
* target/arm: Fix mtedesc for do_mem_zpz
* Add the ability to change the FEC PHY MDIO device number on i.MX25/i.MX6/i.MX7
* target/arm: Don't do raw writes for PMINTENCLR
* virtio-iommu: Fix coverity issue in virtio_iommu_handle_command()
* build: Fix various issues with building on Haiku
* target/nios2: fix wrctl behaviour when using icount
* hw/arm/tosa: Encapsulate misc GPIO handling in a device
* hw/arm/palm.c: Encapsulate misc GPIO handling in a device
* hw/arm/aspeed: Do not create and attach empty SD cards by default
# gpg: Signature made Mon 13 Jul 2020 15:08:16 BST
# gpg: using RSA key E1A5C593CD419DE28E8315CF3C2525ED14360CDE
# gpg: issuer "peter.maydell@linaro.org"
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>" [ultimate]
# gpg: aka "Peter Maydell <pmaydell@gmail.com>" [ultimate]
# gpg: aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>" [ultimate]
# Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83 15CF 3C25 25ED 1436 0CDE
* remotes/pmaydell/tags/pull-target-arm-20200713: (25 commits)
hw/arm/aspeed: Do not create and attach empty SD cards by default
hw/arm/palm.c: Encapsulate misc GPIO handling in a device
hw/arm/palm.c: Detabify
hw/arm/tosa: Encapsulate misc GPIO handling in a device
hw/arm/tosa.c: Detabify
hw/nios2: exit to main CPU loop only when unmasking interrupts
target/nios2: Use gen_io_start around wrctl instruction
target/nios2: in line the semantics of DISAS_UPDATE with other targets
target/nios2: add DISAS_NORETURN case for nothing more to generate
util/drm: make portable by avoiding struct dirent d_type
util/oslib-posix.c: Implement qemu_init_exec_dir() for Haiku
util/compatfd.c: Only include <sys/syscall.h> if CONFIG_SIGNALFD
bswap.h: Include <endian.h> on Haiku for bswap operations
osdep.h: For Haiku, define SIGIO as equivalent to SIGPOLL
osdep.h: Always include <sys/signal.h> if it exists
build: Check that mlockall() exists
util/qemu-openpty.c: Don't assume pty.h is glibc-only
build: Enable BSD symbols for Haiku
virtio-iommu: Fix coverity issue in virtio_iommu_handle_command()
target/arm: Don't do raw writes for PMINTENCLR
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Since added in commit 2bea128c3d, each SDHCI is wired with a SD
card, using empty card when no block drive provided. This is not
the desired behavior. The SDHCI exposes a SD bus to plug cards
on, if no card available, it is fine to have an unplugged bus.
Avoid creating unnecessary SD card device when no block drive
provided.
Fixes: 2bea128c3d ("hw/sd/aspeed_sdhci: New device")
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20200705173402.15620-1-f4bug@amsat.org
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Replace the free-floating set of IRQs and palmte_onoff_gpios()
function with a simple QOM device that encapsulates this
behaviour.
This fixes Coverity issue CID 1421944, which points out that
the memory returned by qemu_allocate_irqs() is leaked.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Li Qiang <liq3ea@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20200628214230.2592-3-peter.maydell@linaro.org
Remove hard-tabs from palm.c.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Li Qiang <liq3ea@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20200628214230.2592-2-peter.maydell@linaro.org
Currently we have a free-floating set of IRQs and a function
tosa_out_switch() which handle the GPIO lines on the tosa board which
connect to LEDs, and another free-floating IRQ and tosa_reset()
function to handle the GPIO line that resets the system. Encapsulate
this behaviour in a simple QOM device.
This commit fixes Coverity issue CID 1421929 (which pointed out that
the 'outsignals' in tosa_gpio_setup() were leaked), because it
removes the use of the qemu_allocate_irqs() API from this code
entirely.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20200628203748.14250-3-peter.maydell@linaro.org
Remove the hardcoded tabs from hw/arm/tosa.c. There aren't
many, but since they're all in constant #defines they're not
going to go away with our usual "only when we touch a function"
policy on reformatting.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20200628203748.14250-2-peter.maydell@linaro.org
Only when guest code is unmasking interrupts, terminate the excution
of translated code and exit to the main CPU loop to handle previous
pended interrupts because of the interrupts mask by guest code.
Signed-off-by: Wentong Wu <wentong.wu@intel.com>
Message-id: 20200710233433.19729-4-wentong.wu@intel.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
wrctl instruction on nios2 target will cause checking cpu
interrupt but tcg_handle_interrupt() will call cpu_abort()
if the CPU gets an interrupt while it's not in 'can do IO'
state, so add gen_io_start around wrctl instruction. Also
at the same time, end the onging TB with DISAS_UPDATE.
Signed-off-by: Wentong Wu <wentong.wu@intel.com>
Message-id: 20200710233433.19729-3-wentong.wu@intel.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
In line the semantics of DISAS_UPDATE on nios2 target with other targets
which is to explicitly write the PC back into the cpu state before doing
a tcg_gen_exit_tb().
Signed-off-by: Wentong Wu <wentong.wu@intel.com>
Message-id: 20200710233433.19729-2-wentong.wu@intel.com
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Add DISAS_NORETURN case for nothing more to generate because at runtime
execution will never return from some helper call. And at the same time
replace DISAS_UPDATE in t_gen_helper_raise_exception and gen_exception
with the newly added DISAS_NORETURN.
Signed-off-by: Wentong Wu <wentong.wu@intel.com>
Message-id: 20200710233433.19729-1-wentong.wu@intel.com
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Given this isn't perforance critical at all lets avoid the non-portable
d_type and use fstat instead to check whenever the file is a chardev.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reported-by: David Carlier <devnexen@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20200703145614.16684-10-peter.maydell@linaro.org
Message-id: 20200701180302.14821-1-kraxel@redhat.com
[PMM: fixed comment style; tweaked subject line]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The qemu_init_exec_dir() function is inherently non-portable;
provide an implementation for Haiku hosts.
Signed-off-by: David Carlier <devnexen@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20200703145614.16684-9-peter.maydell@linaro.org
[PMM: Expanded commit message]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
util/compatfd.c includes <sys/syscall.h> so that the CONFIG_SIGNALFD
code can use SYS_signalfd. Guard the #include with CONFIG_SIGNALFD
to avoid portability issues on hosts like Haiku which do not
provide that header file.
Signed-off-by: David Carlier <devnexen@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20200703145614.16684-8-peter.maydell@linaro.org
[PMM: Expanded commit message]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Haiku puts the bswap* functions in <endian.h>; pull in that
include file on that platform.
Signed-off-by: David Carlier <devnexen@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20200703145614.16684-7-peter.maydell@linaro.org
[PMM: Expanded commit message]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Haiku doesn't provide SIGIO; fix this up in osdep.h by defining it as
equal to SIGPOLL.
Signed-off-by: David Carlier <devnexen@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20200703145614.16684-6-peter.maydell@linaro.org
[PMM: Expanded commit message]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Regularize our handling of <sys/signal.h>: currently we include it in
osdep.h, but only for OpenBSD, and we include it without an ifdef
guard in a couple of C files. This causes problems for Haiku, which
doesn't have that header.
Instead, check in configure whether sys/signal.h exists, and if it
does then always include it from osdep.h.
Signed-off-by: David Carlier <devnexen@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20200703145614.16684-5-peter.maydell@linaro.org
[PMM: Expanded commit message; rename to HAVE_SYS_SIGNAL_H]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Instead of assuming that all POSIX platforms provide mlockall(),
test for it in configure. If the host doesn't provide this platform
then os_mlock() will fail -ENOSYS, as it does already on Windows.
This is necessary for Haiku, which does not have mlockall().
Signed-off-by: David Carlier <devnexen@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20200703145614.16684-4-peter.maydell@linaro.org
[PMM: Expanded commit message; rename to HAVE_MLOCKALL]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Instead of using an OS-specific ifdef test to select the "openpty()
is in pty.h" codepath, make configure check for the existence of
the header and use the new CONFIG_PTY instead.
This is necessary to build on Haiku, which also provides openpty()
via pty.h.
Signed-off-by: David Carlier <devnexen@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20200703145614.16684-3-peter.maydell@linaro.org
[PMM: Expanded commit message; rename to HAVE_PTY_H]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Tell Haiku to provide various BSD functions by setting BSD_SOURCE
and linking libbsd.
Signed-off-by: David Carlier <devnexen@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20200703145614.16684-2-peter.maydell@linaro.org
[PMM: expanded commit message]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Coverity points out (CID 1430180) that the new case is missing
break or a /* fallthrough */ comment. Break is the right thing to
do as in that case, tail is not used.
Fixes 1733eebb9e ("virtio-iommu: Implement RESV_MEM probe request")
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20200708160147.18426-1-eric.auger@redhat.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Raw writes to this register when in KVM mode can cause interrupts to be
raised (even when the PMU is disabled). Because the underlying state is
already aliased to PMINTENSET (which already provides raw write
functions), we can safely disable raw accesses to PMINTENCLR entirely.
Signed-off-by: Aaron Lindsay <aaron@os.amperecomputing.com>
Message-id: 20200707152616.1917154-1-aaron@os.amperecomputing.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The mtedesc that was constructed was not actually passed in.
Found by Coverity (CID 1429996).
Fixes: d28d12f008
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20200706202345.193676-1-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The 'cpu_type' has been moved from BCM283XState to BCM283XClass
in commit 210f47840d, but we forgot to remove the old variable.
Do it now.
Fixes: 210f47840d ("hw/arm/bcm2836: Hardcode correct CPU type")
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20200703200459.23294-1-f4bug@amsat.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Seems the new API is not available on windows.
Update #ifdefs accordingly.
Fixes: 9f815e83e9 ("usb: add hostdevice property to usb-host")
Reported-by: Howard Spoelstra <hsp.cat7@gmail.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: Howard Spoelstra <hsp.cat7@gmail.com>
Message-id: 20200624134510.9381-1-kraxel@redhat.com
In case the string doesn't fit into the buffer snprintf returns the size
it would need, so len can be larger than the buffer. Fix this by simply
using g_strdup_printf() instead of a static buffer.
Reported-by: Wenxiang Qian <leonwxqian@gmail.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 20200701181801.27935-1-kraxel@redhat.com
There is some additional information about the 3270 support in our Wiki
at https://wiki.qemu.org/Features/3270 - so let's include this information
into the main documentation now to have one single source of information
(the Wiki page could later be removed).
While at it, I also shortened the lines of the first example a little bit.
Otherwise they showed up with a horizontal scrollbar in my Firefox browser.
Message-Id: <20200713075112.442-1-thuth@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
This script is intended to be used right after a push to a branch.
By default, it will look for the pipeline associated with the commit
that is the HEAD of the *local* staging branch. It can be used as a
one time check, or with the `--wait` option to wait until the pipeline
completes.
If the pipeline is successful, then a merge of the staging branch into
the master branch should be the next step.
Signed-off-by: Cleber Rosa <crosa@redhat.com>
Message-Id: <20200709024657.2500558-2-crosa@redhat.com>
[thuth: Added the changes suggested by Erik Skultety]
Signed-off-by: Thomas Huth <thuth@redhat.com>
Add fallthrough annotations to be able to compile the code without
warnings with -Wimplicit-fallthrough. Looking at the code, it seems
like the fallthrough is indeed intended here, so the comments should
be appropriate.
Message-Id: <20200630055953.9309-1-thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
GCC supports "#pragma GCC diagnostic" since version 4.6, and
Clang seems to support it, too, since its early versions 3.x.
That means that our minimum required compiler versions all support
this pragma already and we can remove the test from configure and
all the related #ifdefs in the code.
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20200710045515.25986-1-thuth@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Fix typo - the option is called "--fuzz-target" and not "--fuzz_taget".
Also use a different fuzzer in the example, since "virtio-net-fork-fuzz"
does not seem to be a valid fuzzer target (anymore?).
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20200709084059.22539-1-thuth@redhat.com>
There should be a space between "forking" and "for".
Message-Id: <20200709083719.22221-1-thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Alexander Bulekov <alxndr@bu.edu>
Signed-off-by: Thomas Huth <thuth@redhat.com>
In 45222b9a90, I fixed a broken check for rcu_enable_atfork introduced
in d6919e4cb6. I added a call to rcu_enable_atfork after the
call to qemu_init in fuzz.c, but forgot to include the corresponding
header, breaking --enable-fuzzing --enable-werror builds.
Fixes: 45222b9a90 ("fuzz: fix broken qtest check at rcu_disable_atfork")
Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
Message-Id: <20200708200104.21978-3-alxndr@bu.edu>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
When configuring with --enable-fuzzing, we overwrote the CFLAGS
added by all the preceding checks. Instead of overwriting CFLAGS, append
the ones we need.
Fixes: adc28027ff ("fuzz: add configure flag --enable-fuzzing")
Reported-by: Li Qiang <liq3ea@163.com>
Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
Message-Id: <20200708200104.21978-2-alxndr@bu.edu>
Tested-by: Li Qiang <liq3ea@gmail.com>
Reviewed-by: Li Qiang <liq3ea@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Most of the -usbdevice paramaters have been removed already. Update
the doc accordingly.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-id: 20200710065520.24784-1-thuth@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
In function oss_read() a read error currently does not exit the
read loop. With no data to read the variable pos will quickly
underflow and a subsequent successful read overwrites memory
outside the buffer. This patch adds the missing break statement
to the error path of the function.
To reproduce start qemu with -audiodev oss,id=audio0 and in the
guest start audio recording. After some time this will trigger
an exception.
Fixes: 3ba4066d08 "ossaudio: port to the new audio backend api"
Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Message-id: 20200707180836.5435-1-vr_qemu@t-online.de
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Split out code only used during system emulation,
to reduce code pulled in user emulation and tools.
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200423202112.644-6-philmd@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
No file out of chardev/ requires access to this header,
restrict its scope.
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200423202112.644-5-philmd@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
The msmouse / wctablet / testdev character devices are only
used by system emulation. Remove them from user mode and tools.
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200423202112.644-4-philmd@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
