Implement a new QMP command block-export-del and make nbd-server-remove
a wrapper around it.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200924152717.287415-21-kwolf@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
The reference owned by the user/monitor that is created when adding the
export and dropped when removing it was tied to the 'exports' list in
nbd/server.c. Every block export will have a user reference, so move it
to the block export level and tie it to the 'block_exports' list in
block/export/export.c instead. This is necessary for introducing a QMP
command for removing exports.
Note that exports are present in block_exports even after the user has
requested shutdown. This is different from NBD's exports where exports
are immediately removed on a shutdown request, even if they are still in
the process of shutting down. In order to avoid that the user still
interacts with an export that is shutting down (and possibly removes it
a second time), we need to remember if the user actually still owns it.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200924152717.287415-20-kwolf@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
We'll need an id to identify block exports in monitor commands. This
adds one.
Note that this is different from the 'name' option in the NBD server,
which is the externally visible export name. While block export ids need
to be unique in the whole process, export names must be unique only for
the same server. Different export types or (potentially in the future)
multiple NBD servers can have the same export name externally, but still
need different block export ids internally.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200924152717.287415-19-kwolf@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This adds a function to shut down all block exports, and another one to
shut down the block exports of a single type. The latter is used for now
when stopping the NBD server. As soon as we implement support for
multiple NBD servers, we'll need a per-server list of exports and it
will be replaced by a function using that.
As a side effect, the BlockExport layer has a list tracking all existing
exports now. closed_exports loses its only user and can go away.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200924152717.287415-18-kwolf@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Instead of letting the driver allocate and return the BlockExport
object, allocate it already in blk_exp_add() and pass it. This allows us
to initialise the generic part before calling into the driver so that
the driver can just use these values instead of having to parse the
options a second time.
For symmetry, move freeing the BlockExport to blk_exp_unref().
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200924152717.287415-17-kwolf@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Every block export needs a block node to export, so add a 'node-name'
option to BlockExportOptions and remove the replaced option 'device'
from BlockExportOptionsNbd.
To maintain compatibility in nbd-server-add, BlockExportOptionsNbd needs
to be wrapped by a new type NbdServerAddOptions that adds 'device' back
because nbd-server-add doesn't use the BlockExportOptions base type at
all (so even without changing it to a 'node-name' option in
block-export-add, this compatibility code would be necessary).
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200924152717.287415-16-kwolf@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200924152717.287415-15-kwolf@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Having a refcount makes sense for all types of block exports. It is also
a prerequisite for keeping a list of all exports at the BlockExport
level.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200924152717.287415-14-kwolf@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Closing export is somewhat convoluted because nbd_export_close() and
nbd_export_put() call each other and the ways they actually end up being
nested is not necessarily obvious.
However, it is not really necessary to call nbd_export_close() from
nbd_export_put() when putting the last reference because it only does
three things:
1. Close all clients. We're going to refcount 0 and all clients hold a
reference, so we know there is no active client any more.
2. Close the user reference (represented by exp->name being non-NULL).
The same argument applies: If the export were still named, we would
still have a reference.
3. Freeing exp->description. This is really cleanup work to be done when
the export is finally freed. There is no reason to already clear it
while clients are still in the process of shutting down.
So after moving the cleanup of exp->description, the code can be
simplified so that only nbd_export_close() calls nbd_export_put(), but
never the other way around.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200924152717.287415-13-kwolf@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
With this change, NBD exports are now only created through the
BlockExport interface. This allows us finally to move things from the
NBD layer to the BlockExport layer if they make sense for other export
types, too.
blk_exp_add() returns only a weak reference, so the explicit
nbd_export_put() goes away.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200924152717.287415-12-kwolf@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
The export close callback is unused by the built-in NBD server. qemu-nbd
uses it only during shutdown to wait for the unrefed export to actually
go away. It can just use nbd_export_close_all() instead and do without
the callback.
This removes the close callback from nbd_export_new() and makes both
callers of it more similar.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200924152717.287415-11-kwolf@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
qemu-nbd allows use of writethrough cache modes, which mean that write
requests made through NBD will cause a flush before they complete.
Expose the same functionality in block-export-add.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200924152717.287415-10-kwolf@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This is a QMP equivalent of qemu-nbd's --shared option, limiting the
maximum number of clients that can attach at the same time.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200924152717.287415-9-kwolf@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
nbd-server-add tries to be convenient and adds two questionable
features that we don't want to share in block-export-add, even for NBD
exports:
1. When requesting a writable export of a read-only device, the export
is silently downgraded to read-only. This should be an error in the
context of block-export-add.
2. When using a BlockBackend name, unplugging the device from the guest
will automatically stop the NBD server, too. This may sometimes be
what you want, but it could also be very surprising. Let's keep
things explicit with block-export-add. If the user wants to stop the
export, they should tell us so.
Move these things into the nbd-server-add QMP command handler so that
they apply only there.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200924152717.287415-8-kwolf@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Instead of implementing qemu-nbd --offset in the NBD code, just put a
raw block node with the requested offset on top of the user image and
rely on that doing the job.
This does not only simplify the nbd_export_new() interface and bring it
closer to the set of options that the nbd-server-add QMP command offers,
but in fact it also eliminates a potential source for bugs in the NBD
code which previously had to add the offset manually in all relevant
places.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200924152717.287415-7-kwolf@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
No reason to duplicate the functionality locally, we can now just reuse
the QMP command block-export-add for --export.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200924152717.287415-6-kwolf@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
We want to have a common set of commands for all types of block exports.
Currently, this is only NBD, but we're going to add more types.
This patch adds the basic BlockExport and BlockExportDriver structs and
a QMP command block-export-add that creates a new export based on the
given BlockExportOptions.
qmp_nbd_server_add() becomes a wrapper around qmp_block_export_add().
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200924152717.287415-5-kwolf@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
The name BlockExport will be used for the struct containing the runtime
state of block exports, so change the name of export creation options.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200924152717.287415-4-kwolf@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Move all block export related types and commands from block-core to the
new QAPI module block-export.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200924152717.287415-3-kwolf@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200924152717.287415-2-kwolf@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
help_oneline is declared and starts as:
static void help_oneline(const char *cmd, const cmdinfo_t *ct)
{
if (cmd) {
printf("%s ", cmd);
} else {
printf("%s ", ct->name);
if (ct->altname) {
printf("(or %s) ", ct->altname);
}
}
However, there are only two routes to help_oneline being called:
help_f -> help_all -> help_oneline(ct->name, ct)
help_f -> help_onecmd(argv[1], ct)
In the first case, 'cmd' and 'ct->name' are the same thing,
so it's impossible for the if (cmd) to be false and then validly
print ct->name - this is upsetting gcc
( https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96739 )
In the second case, cmd is argv[1] and we know we've got argv[1]
so again (cmd) is non-NULL.
Simplify help_oneline by just printing cmd.
(Also strengthen argc check just to be pedantic)
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <20200824102914.105619-1-dgilbert@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This filter was added back in 2017 for QEMU 2.11 but it was never
properly documented, so let's explain how it works and add a couple of
examples.
Signed-off-by: Alberto Garcia <berto@igalia.com>
Message-Id: <20200921173016.27935-1-berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
macOS is shipped with a very old version of the bash (3.2), which
is currently not suitable for running the iotests anymore (e.g.
it is missing support for "readarray" which is used in the file
tests/qemu-iotests/common.filter). Add a check to skip the iotests
in this case - if someone still wants to run the iotests on macOS,
they can install a newer version from homebrew, for example.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20200918153514.330705-1-thuth@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Use self-explicit NANOSECONDS_PER_SECOND definition instead
of magic value.
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200921110145.520944-1-philmd@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
- drop python 3.5 test from travis
- replace Debian 9 containers with 10
- increase cross build timeout
- bump minimum python version in configure
- move user plugins tests to gitlab
- split deprecated builds into build and test
-----BEGIN PGP SIGNATURE-----
iQEzBAABCgAdFiEEZoWumedRZ7yvyN81+9DbCVqeKkQFAl93EEwACgkQ+9DbCVqe
KkRfagf/SPYLUoJTwJpE3GBPFEGaBWT3cD25RxWPlrndQSdarxLfdqF5szfnRVcL
lAS/JRIlxw1sTlYPAW8OLp/WPRaI9s2ZRBQNtUGiTxCwsSNT8mnmkhg1GDkIM+KH
tcAuXfxlq6eK52QPU5+8TKW+geaGHv4vDwlWxXDC9sE+0MKva4tJ7c0LWZjZVcc4
bmnS+mwqP75ywvAilxKRSN55Ecn4f8mfhiN/f0C0M6613Y7kv/pgZvKLOG3GGVa4
m3X52A5zR2q9s49XRrp+FOJ+2kxgE+moNDLm5hQTSEaEiIwxxuW5IdmmXjQyIbpG
RkXe+lWF3aaaC5lzRfH0DgnDY4kxtw==
=5QLP
-----END PGP SIGNATURE-----
Merge remote-tracking branch 'remotes/stsquad/tags/pull-testing-and-python-021020-1' into staging
Python testing updates:
- drop python 3.5 test from travis
- replace Debian 9 containers with 10
- increase cross build timeout
- bump minimum python version in configure
- move user plugins tests to gitlab
- split deprecated builds into build and test
# gpg: Signature made Fri 02 Oct 2020 12:34:36 BST
# gpg: using RSA key 6685AE99E75167BCAFC8DF35FBD0DB095A9E2A44
# gpg: Good signature from "Alex Bennée (Master Work Key) <alex.bennee@linaro.org>" [full]
# Primary key fingerprint: 6685 AE99 E751 67BC AFC8 DF35 FBD0 DB09 5A9E 2A44
* remotes/stsquad/tags/pull-testing-and-python-021020-1:
gitlab: split deprecated job into build/check stages
gitlab: move linux-user plugins test across to gitlab
configure: Bump the minimum required Python version to 3.6
gitlab-ci: Increase the timeout for the cross-compiler builds
tests/docker: Remove old Debian 9 containers
shippable.yml: Remove the Debian9-based MinGW cross-compiler tests
tests/docker: Update the tricore container to debian 10
gitlab-ci: Remove the Debian9-based containers and containers-layer3
tests/docker: Use Fedora containers for MinGW cross-builds in the gitlab-CI
travis.yml: Drop the Python 3.5 build
travis.yml: Drop the superfluous Python 3.6 build
travis.yml: Update Travis to use Bionic and Focal instead of Xenial
travis.yml: Drop the default softmmu builds
migration: Silence compiler warning in global_state_store_running()
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
While the job is pretty fast for only a few targets we still want to
catch breakage of the build. By splitting the test step we can
allow_failures for that while still ensuring we don't miss the build
breaking.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20201002091538.3017-1-alex.bennee@linaro.org>
Even with the recent split moving beefier plugins into contrib and
dropping them from the check-tcg tests we are still hitting time
limits. This possibly points to a slow down of --debug-tcg but seeing
as we are migrating stuff to gitlab we might as well move there and
bump the timeout.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20201002103223.24022-1-alex.bennee@linaro.org>
All our supported build platforms have Python 3.6 or newer nowadays, and
there are some useful features in Python 3.6 which are not available in
3.5 yet (e.g. the type hint annotations which will allow us to statically
type the QAPI parser), so let's bump the minimum Python version to 3.6 now.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20200923162908.95372-1-thuth@redhat.com>
Message-Id: <20200925154027.12672-16-alex.bennee@linaro.org>
Some of the cross-compiler builds (the mips build and the win64 build
for example) are quite slow and sometimes hit the 1h time limit.
Increase the limit a little bit to make sure that we do not get failures
in the CI runs just because of some few minutes.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200921174320.46062-7-thuth@redhat.com>
Message-Id: <20200925154027.12672-15-alex.bennee@linaro.org>
We do not support Debian 9 in QEMU anymore, and the Debian 9 containers
are now no longer used in the gitlab-CI. Time to remove them.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20200921174320.46062-6-thuth@redhat.com>
Message-Id: <20200925154027.12672-14-alex.bennee@linaro.org>
We're not supporting Debian 9 anymore, and we are now testing
MinGW cross-compiler builds in the gitlab-CI, too, so we do not
really need these jobs in the shippable.yml anymore.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20200921174320.46062-5-thuth@redhat.com>
Message-Id: <20200925154027.12672-13-alex.bennee@linaro.org>
We do not support Debian 9 anymore, thus update the Tricore container
to Debian 10 now.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20200921174320.46062-4-thuth@redhat.com>
Message-Id: <20200925154027.12672-12-alex.bennee@linaro.org>
According to our support policy, Debian 9 is not supported by the
QEMU project anymore. Since we now switched the MinGW cross-compiler
builds to Fedora, we do not need these Debian9-based containers
in the gitlab-CI anymore, and can now also get rid of the "layer3"
container build stage this way.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20200921174320.46062-3-thuth@redhat.com>
Message-Id: <20200925154027.12672-11-alex.bennee@linaro.org>
According to our support policy, we do not support Debian 9 in QEMU
anymore, and we only support building the Windows binaries with a
very recent version of the MinGW toolchain. So we should not test
the MinGW cross-compilation with Debian 9 anymore, but switch to
something newer like Fedora. To do this, we need a separate Fedora
container for each build that provides the QEMU_CONFIGURE_OPTS
environment variable.
Unfortunately, the MinGW 64-bit compiler seems to be a little bit
slow, so we also have to disable some features like "capstone" in the
build here to make sure that the CI pipelines still finish within a
reasonable amount of time.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20200921174320.46062-2-thuth@redhat.com>
Message-Id: <20200925154027.12672-10-alex.bennee@linaro.org>
We are soon going to remove the support for Python 3.5. So remove
the CI job now.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20200922070441.48844-1-thuth@redhat.com>
Message-Id: <20200925154027.12672-9-alex.bennee@linaro.org>
Python 3.6 is already the default Python in the jobs that are based
on Ubuntu Bionic, so it does not make much sense to test this again
separately.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20200918103430.297167-7-thuth@redhat.com>
Message-Id: <20200925154027.12672-8-alex.bennee@linaro.org>
According to our support policy, we do not support Xenial anymore.
Time to switch the bigger parts of the builds to Focal instead.
Some few jobs have to be updated to Bionic instead, since they are
currently still failing on Focal otherwise. Also "--disable-pie" is
causing linker problems with newer versions of Ubuntu ... so remove
that switch from the jobs now (we still test it in a gitlab CI job,
so we don't lose much test coverage here).
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Cleber Rosa <crosa@redhat.com>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Message-Id: <20200918103430.297167-6-thuth@redhat.com>
Message-Id: <20200925154027.12672-7-alex.bennee@linaro.org>
The total runtime of all Travis jobs is very long and we are testing
all softmmu targets in the gitlab-CI already - so we can speed up the
Travis testing a little bit by not testing the softmmu targets here
anymore.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Acked-by: Alex Bennée <alex.bennee@linaro.org>
Acked-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20200918103430.297167-5-thuth@redhat.com>
Message-Id: <20200925154027.12672-6-alex.bennee@linaro.org>
GCC 9.3.0 on Ubuntu complains:
In file included from /usr/include/string.h:495,
from /home/travis/build/huth/qemu/include/qemu/osdep.h:87,
from ../migration/global_state.c:13:
In function ‘strncpy’,
inlined from ‘global_state_store_running’ at ../migration/global_state.c:47:5:
/usr/include/x86_64-linux-gnu/bits/string_fortified.h:106:10: error:
‘__builtin_strncpy’ specified bound 100 equals destination size [-Werror=stringop-truncation]
106 | return __builtin___strncpy_chk (__dest, __src, __len, __bos (__dest));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
... but we apparently really want to do a strncpy here - the size is already
checked with the assert() statement right in front of it. To silence the
warning, simply replace it with our strpadcpy() function.
Suggested-by: Philippe Mathieu-Daudé <philmd@redhat.com> (two years ago)
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200918103430.297167-4-thuth@redhat.com>
Message-Id: <20200925154027.12672-5-alex.bennee@linaro.org>
The SRST implementation did not keep up with the rest of IDE; it is
possible to perform a weak reset on an IDE device to remove the BSY/DRQ
bits, and then issue writes to the control/device registers which can
cause chaos with the state machine.
Fix that by actually performing a real reset.
Reported-by: Alexander Bulekov <alxndr@bu.edu>
Fixes: https://bugs.launchpad.net/qemu/+bug/1878253
Fixes: https://bugs.launchpad.net/qemu/+bug/1887303
Fixes: https://bugs.launchpad.net/qemu/+bug/1887309
Signed-off-by: John Snow <jsnow@redhat.com>
Not known to fix any bug, but I couldn't help but notice that ATA
specifies that writing to this register should clear an interrupt.
ATA7: Section 5.3.3 (Command register - Effect)
ATA6: Section 7.4.4 (Command register - Effect)
ATA5: Section 7.4.4 (Command register - Effect)
ATA4: Section 7.4.4 (Command register - Effect)
ATA3: Section 5.2.2 (Command register)
Other editions: try searching for the phrase "Writing this register".
Signed-off-by: John Snow <jsnow@redhat.com>
(In QEMU, we call this the "select" register.)
My memory isn't good enough to memorize what these magic runes
do. Label them to prevent mixups from happening in the future.
Side note: I assume it's safe to always set 0xA0 even though ATA2 claims
these bits are reserved, because ATA3 immediately reinstated that these
bits should be always on. ATA4 and subsequent specs only claim that the
fields are obsolete, so I assume it's safe to leave these set and that
it should work with the widest array of guests.
Signed-off-by: John Snow <jsnow@redhat.com>
Reorder these just a pinch to make them more obvious at a glance what
the addressing mode is.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
I have been staring at this FIXME for years and I never knew what it
meant. I finally stumbled across it!
When writing to the command registers, the old value is shifted into a
HOB copy of the register and the new value is written into the primary
register. When reading registers, the value retrieved is dependent on
the HOB bit in the CONTROL register.
By setting bit 7 (0x80) in CONTROL, any register read will, if it has
one, yield the HOB value for that register instead.
Our code has a problem: We were using bit 7 of the DEVICE register to
model this. We use bus->cmd roughly as the control register already, as
it stores the value from ide_ctrl_write.
Lastly, all command register writes reset the HOB, so fix that, too.
Signed-off-by: John Snow <jsnow@redhat.com>
In real ISA operation, register writes go out to an entire bus channel
and all listening devices receive the write. The devices do not toggle
the DEV bit based on their own configuration, nor does the HBA
intermediate or tamper with that value.
The reality of the matter is that DEV0/DEV1 accordingly will react to
command register writes based on whether or not the device was selected.
This does not fix a known bug, but it makes the code slightly simpler
and more obvious.
Signed-off-by: John Snow <jsnow@redhat.com>
It's the Control register, part of the Control block -- Command is
misleading here. Rename all related functions and constants.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
libFuzzer triggered the following assertion:
cat << EOF | qemu-system-i386 -M pc-q35-5.0 \
-nographic -monitor none -serial none -qtest stdio
outl 0xcf8 0x8000fa24
outl 0xcfc 0xe1068000
outl 0xcf8 0x8000fa04
outw 0xcfc 0x7
outl 0xcf8 0x8000fb20
write 0xe1068304 0x1 0x21
write 0xe1068318 0x1 0x21
write 0xe1068384 0x1 0x21
write 0xe1068398 0x2 0x21
EOF
qemu-system-i386: exec.c:3621: address_space_unmap: Assertion `mr != NULL' failed.
Aborted (core dumped)
This is because we don't check the return value from dma_memory_map()
which can return NULL, then we call dma_memory_unmap(NULL) which is
illegal. Fix by only unmap if the value is not NULL (and the size is
not the expected one).
Cc: qemu-stable@nongnu.org
Reported-by: Alexander Bulekov <alxndr@bu.edu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20200718072854.7001-1-f4bug@amsat.org
Fixes: f6ad2e32f8 ("ahci: add ahci emulation")
BugLink: https://bugs.launchpad.net/qemu/+bug/1884693
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: John Snow <jsnow@redhat.com>
* Make isar_feature_aa32_fp16_arith() handle M-profile
* Fix SVE splice
* Fix SVE LDR/STR
* Remove ignore_memory_transaction_failures on the raspi2
* raspi: Various cleanup/refactoring
-----BEGIN PGP SIGNATURE-----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=vKOh
-----END PGP SIGNATURE-----
Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20201001' into staging
target-arm queue:
* Make isar_feature_aa32_fp16_arith() handle M-profile
* Fix SVE splice
* Fix SVE LDR/STR
* Remove ignore_memory_transaction_failures on the raspi2
* raspi: Various cleanup/refactoring
# gpg: Signature made Thu 01 Oct 2020 15:46:47 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-20201001:
hw/arm/raspi: Remove use of the 'version' value in the board code
hw/arm/raspi: Use RaspiProcessorId to set the firmware load address
hw/arm/raspi: Introduce RaspiProcessorId enum
hw/arm/raspi: Use more specific machine names
hw/arm/raspi: Avoid using TypeInfo::class_data pointer
hw/arm/raspi: Move arm_boot_info structure to RaspiMachineState
hw/arm/raspi: Load the firmware on the first core
hw/arm/raspi: Display the board revision in the machine description
hw/arm/raspi: Remove ignore_memory_transaction_failures on the raspi2
hw/arm/bcm2835: Add more unimplemented peripherals
hw/arm/raspi: Define various blocks base addresses
target/arm: Fix SVE splice
target/arm: Fix sve ldr/str
target/arm: Make isar_feature_aa32_fp16_arith() handle M-profile
target/arm: Add ID register values for Cortex-M0
hw/intc/armv7m_nvic: Only show ID register values for Main Extension CPUs
target/arm: Move id_pfr0, id_pfr1 into ARMISARegisters
target/arm: Replace ARM_FEATURE_PXN with ID_MMFR0.VMSA check
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
