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The linux-user queue_signal() function always returns 1, and none of
its callers check the return value. Give it a void return type
instead.
The return value is a leftover from the old pre-2016 linux-user
signal handling code, which really did have a queue of signals and so
might return a failure indication if too many signals were queued at
once. The current design avoids having to ever have more than one
signal queued via queue_signal() at once, so it can never fail.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220114153732.3767229-4-peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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In commit c599d4d6d6e9bfdb64 in 2016 we renamed the old force_sig()
function to dump_core_and_abort(), but we forgot to rename the
associated tracepoint. Rename the tracepoint to to match the
function it's called from.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220114153732.3767229-3-peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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Fix a typo in a comment in the arm cpu_loop code.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Message-Id: <20220114182535.3804783-1-peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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fdt_open_into() obligingly returns an error code in case the operation
failed. So be obliging as well and use it in the error message.
Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220116114649.40859-1-shentey@gmail.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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Fix typo in 'make check-help' output.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220111175528.22294-1-f4bug@amsat.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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Fix a comment in qdev-core.h where we incorrectly referred
to TYPE_IRQ_SPLIT when we meant TYPE_SPLIT_IRQ.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20220111172655.3546766-1-peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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This code is easier to review using the load/store API.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20211218111912.1499377-1-philmd@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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Add the vmstate for the ETRAX timers.
This is in theory a migration compatibility break
for the 'AXIS devboard 88' CRIS machine.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20211106105623.510868-1-f4bug@amsat.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
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A lot of Optional[] types doesn't make code beautiful.
test_field_width defaults to 8, but that is never used in the code.
More over, if we want some default behavior for single call of
test_run(), it should just print the whole test name, not limiting or
expanding its width, so 8 is bad default.
So, just drop the default as unused for now.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20211210201450.101576-1-vsementsov@virtuozzo.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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First, this permission never protected a node from being changed, as
generic child-replacing functions don't check it.
Second, it's a strange thing: it presents a permission of parent node
to change its child. But generally, children are replaced by different
mechanisms, like jobs or qmp commands, not by nodes.
Graph-mod permission is hard to understand. All other permissions
describe operations which done by parent node on its child: read,
write, resize. Graph modification operations are something completely
different.
The only place where BLK_PERM_GRAPH_MOD is used as "perm" (not shared
perm) is mirror_start_job, for s->target. Still modern code should use
bdrv_freeze_backing_chain() to protect from graph modification, if we
don't do it somewhere it may be considered as a bug. So, it's a bit
risky to drop GRAPH_MOD, and analyzing of possible loss of protection
is hard. But one day we should do it, let's do it now.
One more bit of information is that locking the corresponding byte in
file-posix doesn't make sense at all.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210902093754.2352-1-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Consider the case when the whole buffer is zero and end is unaligned.
If i <= tail, we return 1 and do one unaligned WRITE, RMW happens.
If i > tail, we do on aligned WRITE_ZERO (or skip if target is zeroed)
and again one unaligned WRITE, RMW happens.
Let's do better: don't fragment the whole-zero buffer and report it as
ZERO: in case of zeroed target we just do nothing and avoid RMW. If
target is not zeroes, one unaligned WRITE_ZERO should not be much worse
than one unaligned WRITE.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20211217164654.1184218-3-vsementsov@virtuozzo.com>
Tested-by: Peter Lieven <pl@kamp.de>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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This demonstrates what happens when the block status changes in
sub-min_sparse granularity, but all of the parts are zeroed out. The
alignment logic in is_allocated_sectors() prevents that the target image
remains fully sparse as expected, but turns it into a data cluster of
explicit zeros.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20211217164654.1184218-2-vsementsov@virtuozzo.com>
Tested-by: Peter Lieven <pl@kamp.de>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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The calculation in sector2cluster() is done relative to the offset of
the root directory. Any writes to blocks before the start of the root
directory (in particular, writes to the FAT) result in negative values,
which are not handled correctly in vvfat_write().
This changes sector2cluster() to return a signed value, and makes sure
that vvfat_write() doesn't try to find mappings for negative cluster
number. It clarifies the code in vvfat_write() to make it more obvious
that the cluster numbers can be negative.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20211209152231.23756-1-kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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The size of the qcow size was calculated so that only the FAT partition
would fit on it, but not the whole disk. However, offsets relative to
the whole disk are used to access it, so increase its size to be large
enough for that.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20211209151815.23495-1-kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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With CAP_DAC_OVERRIDE (which e.g. root generally has), permission checks
will be bypassed when opening files.
308 in one instance tries to open a read-only file (FUSE export) with
qemu-io as read/write, and expects this to fail. However, when running
it as root, opening will succeed (thanks to CAP_DAC_OVERRIDE) and only
the actual write operation will fail.
Note this as "Case not run", but have the test pass in either case.
Reported-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Fixes: 2c7dd057aa7bd7a875e9b1a53975c220d6380bc4
("export/fuse: Pass default_permissions for mount")
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20220103120014.13061-1-hreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Test the following scenario:
- Simple stream block in two-layer backing chain (base and top)
- The job is drained via blk_drain(), then an error occurs while the job
settles the ongoing request
- And so the job completes while in blk_drain()
This was reported as a segfault, but is fixed by "block-backend: prevent
dangling BDS pointers across aio_poll()".
Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=2036178
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20220111153613.25453-3-stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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The BlockBackend root child can change when aio_poll() is invoked. This
happens when a temporary filter node is removed upon blockjob
completion, for example.
Functions in block/block-backend.c must be aware of this when using a
blk_bs() pointer across aio_poll() because the BlockDriverState refcnt
may reach 0, resulting in a stale pointer.
One example is scsi_device_purge_requests(), which calls blk_drain() to
wait for in-flight requests to cancel. If the backup blockjob is active,
then the BlockBackend root child is a temporary filter BDS owned by the
blockjob. The blockjob can complete during bdrv_drained_begin() and the
last reference to the BDS is released when the temporary filter node is
removed. This results in a use-after-free when blk_drain() calls
bdrv_drained_end(bs) on the dangling pointer.
Explicitly hold a reference to bs across block APIs that invoke
aio_poll().
Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=2021778
Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=2036178
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20220111153613.25453-2-stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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When building QEMU with --disable-vhost-user and using introspection,
query-qmp-schema lists vhost-user-blk even though it's not actually
available:
{ "execute": "query-qmp-schema" }
{
"return": [
...
{
"name": "312",
"members": [
{
"name": "nbd"
},
{
"name": "vhost-user-blk"
}
],
"meta-type": "enum",
"values": [
"nbd",
"vhost-user-blk"
]
},
Restrict vhost-user-blk in BlockExportType when
CONFIG_VHOST_USER_BLK_SERVER is disabled, so it
doesn't end listed by query-qmp-schema.
Fixes: 90fc91d50b7 ("convert vhost-user-blk server to block export API")
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220107105420.395011-4-f4bug@amsat.org>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Add missing vhost-user-blk help:
$ qemu-storage-daemon -h
...
--export [type=]vhost-user-blk,id=<id>,node-name=<node-name>,
addr.type=unix,addr.path=<socket-path>[,writable=on|off]
[,logical-block-size=<block-size>][,num-queues=<num-queues>]
export the specified block node as a
vhosts-user-blk device over UNIX domain socket
--export [type=]vhost-user-blk,id=<id>,node-name=<node-name>,
fd,addr.str=<fd>[,writable=on|off]
[,logical-block-size=<block-size>][,num-queues=<num-queues>]
export the specified block node as a
vhosts-user-blk device over file descriptor
...
Fixes: 90fc91d50b7 ("convert vhost-user-blk server to block export API")
Reported-by: Qing Wang <qinwang@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220107105420.395011-3-f4bug@amsat.org>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Reported-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220107105420.395011-2-f4bug@amsat.org>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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The -device JSON syntax impl leaks a reference on the created
DeviceState instance. As a result when you hot-unplug the
device, the device_finalize method won't be called and thus
it will fail to emit the required DEVICE_DELETED event.
A 'json-cli' feature was previously added against the
'device_add' QMP command QAPI schema to indicated to mgmt
apps that -device supported JSON syntax. Given the hotplug
bug that feature flag is not usable for its purpose, so
we add a new 'json-cli-hotplug' feature to indicate the
-device supports JSON without breaking hotplug.
Fixes: 5dacda5167560b3af8eadbce5814f60ba44b467e
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/802
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20220105123847.4047954-2-berrange@redhat.com>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Tested-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Remove drive_get_max_devs, as it is not used by anyone.
Last use was removed in commit 8f2d75e81d5
("hw: Drop superfluous special checks for orphaned -drive").
Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20211215121140.456939-4-eesposit@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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drive_def
drive_def is only a particular use case of
qemu_opts_parse_noisily, so it can be inlined.
Also remove drive_mark_claimed_by_board, as it is only defined
but not implemented (nor used) anywhere.
Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Message-Id: <20211215121140.456939-3-eesposit@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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bdrv_backing_overridden is only used in block.c, so there is
no need to leave it in block_int.h
Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20211215121140.456939-2-eesposit@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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This code seems to be used by vmport hack, passing these values allows
to implement horizontal scroll support even when using vmport.
In case it's not supported horizontal scroll will act as a vertical one.
Signed-off-by: Dmitry Petrov <dpetroff@gmail.com>
Message-Id: <20220108153947.171861-6-dpetroff@gmail.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Signed-off-by: Dmitry Petrov <dpetroff@gmail.com>
Message-Id: <20220108153947.171861-5-dpetroff@gmail.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Signed-off-by: Dmitry Petrov <dpetroff@gmail.com>
Message-Id: <20220108153947.171861-4-dpetroff@gmail.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Signed-off-by: Dmitry Petrov <dpetroff@gmail.com>
Message-Id: <20220108153947.171861-3-dpetroff@gmail.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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This change adds support for horizontal scroll to ps/2 mouse device
code. The code is implemented to match the logic of linux kernel
which is used as a reference.
Signed-off-by: Dmitry Petrov <dpetroff@gmail.com>
Message-Id: <20220108153947.171861-2-dpetroff@gmail.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Previously, the large modes (>1080p) that were generated by Qemu in its EDID
were all 50 Hz. If we provide them to a Guest OS and the user selects
one of these modes, then the OS by default only gets 50 FPS. This is
especially true for Windows OS. With this patch, we are now exposing a
3840x2160@60 Hz which will allow the guest OS to get 60 FPS.
Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Satyeshwar Singh <satyeshwar.singh@intel.com>
Message-Id: <20211116221103.27128-1-dongwon.kim@intel.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Currently QEMU defaults to a resolution of 1024x768 when exposing EDID
info to the guest OS. The EDID default info is important as this will
influence what resolution many guest OS will configure the screen with
on boot. It can also potentially influence what resolution the firmware
will configure the screen with, though until very recently EDK2 would
not handle EDID info.
One important thing to bear in mind is that the default graphics card
driver provided by Windows will leave the display set to whatever
resolution was enabled by the firmware on boot. Even if sufficient
VRAM is available, the resolution can't be changed without installing
new drivers. IOW, the default resolution choice is quite important
for usability of Windows.
Modern real world monitor hardware for desktop/laptop has supported
resolutions higher than 1024x768 for a long time now, perhaps as long
as 15+ years. There are quite a wide variety of native resolutions in
use today, however, and in wide screen form factors the height may not
be all that tall.
None the less, it is considered that there is scope for making the
QEMU default resolution slightly larger.
In considering what possible new default could be suitable, choices
considered were 1280x720 (720p), 1280x800 (WXGA) and 1280x1024 (SXGA).
In many ways, vertical space is the most important, and so 720p was
discarded due to loosing vertical space, despite being 25% wider.
The SXGA resolution would be good, but when taking into account
window titlebars/toolbars and window manager desktop UI, this might
be a little too tall for some users to fit the guest on their physical
montior.
This patch thus suggests a modest change to 1280x800 (WXGA). This
only consumes 1 MB per colour channel, allowing double buffered
framebuffer in 8 MB of VRAM. Width wise this is 25% larger than
QEMU's current default, but height wise this only adds 5%, so the
difference isn't massive on the QEMU side.
Overall there doesn't appear to be a compelling reason to stick
with 1024x768 resolution.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Message-Id: <20211129140508.1745130-1-berrange@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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vga_mmio_init() is used only one time and not very helpful,
inline and remove it.
Reviewed-by: BALATON Zoltan <balaton@eik.bme.hu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20211206224528.563588-5-f4bug@amsat.org>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Introduce TYPE_VGA_MMIO, a sysbus device.
While there is no change in the vga_mmio_init()
interface, this is a migration compatibility break
of the MIPS Acer Pica 61 Jazz machine (pica61).
Suggested-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: BALATON Zoltan <balaton@eik.bme.hu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20211206224528.563588-4-f4bug@amsat.org>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Inline vga_mm_init() in vga_mmio_init() to simplify the
next patch review. Kind of.
Reviewed-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20211206224528.563588-3-f4bug@amsat.org>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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There is no ISA bus part in the MMIO VGA device, so rename:
* hw/display/vga-isa-mm.c -> hw/display/vga-mmio.c
* CONFIG_VGA_ISA_MM -> CONFIG_VGA_MMIO
* ISAVGAMMState -> VGAMmioState
* isa_vga_mm_init() -> vga_mmio_init()
Reviewed-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20211206224528.563588-2-f4bug@amsat.org>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Otherwise we run the error handling code even for successful requests.
Fixes: 13b250b12ad3 ("uas: add stream number sanity checks.")
Reported-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20211210080659.2537084-1-kraxel@redhat.com>
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When closing the QEMU Gtk display window, it can occasionaly warn:
qemu-system-x86_64: Gtk: gtk_clipboard_set_with_data: assertion 'targets != NULL' failed
#3 0x00007ffff4f02f22 in gtk_clipboard_set_with_data (clipboard=<optimized out>, targets=<optimized out>, n_targets=<optimized out>, get_func=<optimized out>, clear_func=<optimized out>, user_data=<optimized out>) at /usr/src/debug/gtk3-3.24.30-4.fc35.x86_64/gtk/gtkclipboard.c:672
#4 0x00007ffff552cd75 in gd_clipboard_update_info (gd=0x5555579a9e00, info=0x555557ba4b50) at ../ui/gtk-clipboard.c:98
#5 0x00007ffff552ce00 in gd_clipboard_notify (notifier=0x5555579aaba8, data=0x7fffffffd720) at ../ui/gtk-clipboard.c:128
#6 0x000055555603e0ff in notifier_list_notify (list=0x555556657470 <clipboard_notifiers>, data=0x7fffffffd720) at ../util/notify.c:39
#7 0x000055555594e8e0 in qemu_clipboard_update (info=0x555557ba4b50) at ../ui/clipboard.c:54
#8 0x000055555594e840 in qemu_clipboard_peer_release (peer=0x55555684a5b0, selection=QEMU_CLIPBOARD_SELECTION_PRIMARY) at ../ui/clipboard.c:40
#9 0x000055555594e786 in qemu_clipboard_peer_unregister (peer=0x55555684a5b0) at ../ui/clipboard.c:19
#10 0x000055555595f044 in vdagent_disconnect (vd=0x55555684a400) at ../ui/vdagent.c:852
#11 0x000055555595f262 in vdagent_chr_fini (obj=0x55555684a400) at ../ui/vdagent.c:908
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20211216083233.1166504-1-marcandre.lureau@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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On the last added dbus patch, I left a tiny BO:
==441487==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x611000025a70 at pc 0x7f0817bb764c bp 0x7ffde672ae60 sp 0x7ffde672ae58
WRITE of size 8 at 0x611000025a70 thread T0
#0 0x7f0817bb764b in dbus_vc_class_init ../ui/dbus.c:401
A cookie for ASAN! not you C :)
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Fixes: 7f767ca35e5 ("ui/dbus: register D-Bus VC handler")
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20211222144032.443424-1-marcandre.lureau@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Quote from:
High Definition Audio Specification 1.0a, section 3.3.35
Offset 80: {IOB}SDnCTL Stream Reset (SRST): Writing a 1 causes
the corresponding stream to be reset. The Stream Descriptor
registers (except the SRST bit itself) ... are reset.
Change the code to reset the Stream Descriptor Control and Status
registers except the SRST bit.
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/757
Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Message-Id: <20211226154017.6067-3-vr_qemu@t-online.de>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Audio recordings with the DirectSound backend don't sound right.
A look a the Microsoft online documentation tells us why.
From the DirectSound Programming Guide, Capture Buffer Information:
'You can safely copy data from the buffer only up to the read
cursor.'
Change the code to read up to the read cursor instead of the
capture cursor.
Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Message-Id: <20211226154017.6067-2-vr_qemu@t-online.de>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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On Windows the jack_set_thread_creator() function and on MacOS the
pthread_setname_np() function with a thread pointer paramater is
not available. Use #ifdefs to remove the jack_set_thread_creator()
function call and the qjack_thread_creator() function in both
cases.
The qjack_thread_creator() function just sets the name of the
created thread for debugging purposes and isn't really necessary.
From the jack_set_thread_creator() documentation:
(...)
No normal application/client should consider calling this. (...)
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/785
Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Reviewed-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Message-Id: <20211226154017.6067-1-vr_qemu@t-online.de>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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The GDB statck is as follows:
(gdb) bt
0 __lll_lock_wait (futex=futex@entry=0x56211df20360, private=0) at lowlevellock.c:52
1 0x00007f263caf20a3 in __GI___pthread_mutex_lock (mutex=0x56211df20360) at ../nptl/pthread_mutex_lock.c:80
2 0x000056211a757364 in qemu_mutex_lock_impl (mutex=0x56211df20360, file=0x56211a804857 "../ui/vnc-jobs.h", line=60)
at ../util/qemu-thread-posix.c:80
3 0x000056211a0ef8c7 in vnc_lock_output (vs=0x56211df14200) at ../ui/vnc-jobs.h:60
4 0x000056211a0efcb7 in vnc_clipboard_send (vs=0x56211df14200, count=1, dwords=0x7ffdf1701338) at ../ui/vnc-clipboard.c:138
5 0x000056211a0f0129 in vnc_clipboard_notify (notifier=0x56211df244c8, data=0x56211dd1bbf0) at ../ui/vnc-clipboard.c:209
6 0x000056211a75dde8 in notifier_list_notify (list=0x56211afa17d0 <clipboard_notifiers>, data=0x56211dd1bbf0) at ../util/notify.c:39
7 0x000056211a0bf0e6 in qemu_clipboard_update (info=0x56211dd1bbf0) at ../ui/clipboard.c:50
8 0x000056211a0bf05d in qemu_clipboard_peer_release (peer=0x56211df244c0, selection=QEMU_CLIPBOARD_SELECTION_CLIPBOARD)
at ../ui/clipboard.c:41
9 0x000056211a0bef9b in qemu_clipboard_peer_unregister (peer=0x56211df244c0) at ../ui/clipboard.c:19
10 0x000056211a0d45f3 in vnc_disconnect_finish (vs=0x56211df14200) at ../ui/vnc.c:1358
11 0x000056211a0d4c9d in vnc_client_read (vs=0x56211df14200) at ../ui/vnc.c:1611
12 0x000056211a0d4df8 in vnc_client_io (ioc=0x56211ce70690, condition=G_IO_IN, opaque=0x56211df14200) at ../ui/vnc.c:1649
13 0x000056211a5b976c in qio_channel_fd_source_dispatch
(source=0x56211ce50a00, callback=0x56211a0d4d71 <vnc_client_io>, user_data=0x56211df14200) at ../io/channel-watch.c:84
14 0x00007f263ccede8e in g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
15 0x000056211a77d4a1 in glib_pollfds_poll () at ../util/main-loop.c:232
16 0x000056211a77d51f in os_host_main_loop_wait (timeout=958545) at ../util/main-loop.c:255
17 0x000056211a77d630 in main_loop_wait (nonblocking=0) at ../util/main-loop.c:531
18 0x000056211a45bc8e in qemu_main_loop () at ../softmmu/runstate.c:726
19 0x000056211a0b45fa in main (argc=69, argv=0x7ffdf1701778, envp=0x7ffdf17019a8) at ../softmmu/main.c:50
From the call trace, we can see it is a deadlock bug.
vnc_disconnect_finish will acquire the output_mutex.
But, the output_mutex will be acquired again in vnc_clipboard_send.
Repeated locking will cause deadlock. So, I move
qemu_clipboard_peer_unregister() behind vnc_unlock_output();
Fixes: 0bf41cab93e ("ui/vnc: clipboard support")
Signed-off-by: Lei Rao <lei.rao@intel.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20220105020808.597325-1-lei.rao@intel.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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A device of USB video class usually uses larger desc structure, so
use larger buffer to avoid failure. (dev-video.c is ready)
This is an unlikely code path:
1, during guest startup, guest tries to probe device.
2, run 'lsusb' command in guest(or other similar commands).
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>
Message-Id: <20220112015835.900619-1-pizhenwei@bytedance.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Linux need to fill up the HID descriptor in order to let the driver be
emulated. The descriptor was downloaded from [1]. The patch was tested
with evtest tool on top of qemu 5.2.0 with linux kernel 4.19.208.
[1] https://github.com/linuxwacom/wacom-hid-descriptors/tree/master/Wacom%20PenPartner
Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
Co-developed-by: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Message-Id: <20220112090125.381364-1-dario.binacchi@amarulasolutions.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Now that virtio-blk and virtio-scsi are ready, get rid of
the handle_aio_output() callback. It's no longer needed.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Message-id: 20211207132336.36627-7-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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The difference between ->handle_output() and ->handle_aio_output() was
that ->handle_aio_output() returned a bool return value indicating
progress. This was needed by the old polling API but now that the bool
return value is gone, the two functions can be unified.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Message-id: 20211207132336.36627-6-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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Prepare virtio_scsi_handle_cmd() to be used by both dataplane and
non-dataplane by making the condition for starting ioeventfd more
specific. This way it won't trigger when dataplane has already been
started.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Message-id: 20211207132336.36627-5-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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The return value of virtio_blk_handle_vq() is no longer used. Get rid of
it. This is a step towards unifying the dataplane and non-dataplane
virtqueue handler functions.
Prepare virtio_blk_handle_output() to be used by both dataplane and
non-dataplane by making the condition for starting ioeventfd more
specific. This way it won't trigger when dataplane has already been
started.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Message-id: 20211207132336.36627-4-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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The virtqueue host notifier API
virtio_queue_aio_set_host_notifier_handler() polls the virtqueue for new
buffers. AioContext previously required a bool progress return value
indicating whether an event was handled or not. This is no longer
necessary because the AioContext polling API has been split into a poll
check function and an event handler function. The event handler is only
run when we know there is work to do, so it doesn't return bool.
The VirtIOHandleAIOOutput function signature is now the same as
VirtIOHandleOutput. Get rid of the bool return value.
Further simplifications will be made for virtio-blk and virtio-scsi in
the next patch.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Message-id: 20211207132336.36627-3-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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