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2022-07-13module: Use bundle mechanismAkihiko Odaki
Before this change, the directory of the executable was being added to resolve modules in the build tree. However, get_relocated_path() can now resolve them with the new bundle mechanism. Signed-off-by: Akihiko Odaki <akihiko.odaki@gmail.com> Message-Id: <20220624145039.49929-5-akihiko.odaki@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-07-09modules: check arch on qom lookupGerd Hoffmann
With target-specific modules we can have multiple modules implementing the same object. Therefore we have to check the target arch on lookup to find the correct module. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Jose R. Ziviani <jziviani@suse.de> Message-Id: <20210624103836.2382472-20-kraxel@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-07-09modules: check arch and block load on mismatchGerd Hoffmann
Add module_allow_arch() to set the target architecture. In case a module is limited to some arch verify arches match and ignore the module if not. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Jose R. Ziviani <jziviani@suse.de> Message-Id: <20210624103836.2382472-19-kraxel@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-07-09modules: add tracepointsGerd Hoffmann
One for module load and one for qom type lookup. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Jose R. Ziviani <jziviani@suse.de> Message-Id: <20210624103836.2382472-18-kraxel@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-07-09modules: use modinfo for qemu opts loadGerd Hoffmann
Use module database to figure which module adds given QemuOpts group. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Jose R. Ziviani <jziviani@suse.de> Message-Id: <20210624103836.2382472-17-kraxel@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-07-09modules: use modinfo for qom loadGerd Hoffmann
Use module database to figure which module implements a given QOM type. Drop hard-coded object list. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Jose R. Ziviani <jziviani@suse.de> Message-Id: <20210624103836.2382472-16-kraxel@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-07-09modules: use modinfo for dependenciesGerd Hoffmann
Use module database for module dependencies. Drop hard-coded dependency list. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Jose R. Ziviani <jziviani@suse.de> Message-Id: <20210624103836.2382472-15-kraxel@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-07-09modules: generate modinfo.cGerd Hoffmann
Add script to generate C source with a small database containing the module meta-data. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Jose R. Ziviani <jziviani@suse.de> Message-Id: <20210624103836.2382472-4-kraxel@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-05-10virtio-gpu: add virtio-vga-glGerd Hoffmann
Add pci proxy for virtio-gpu-gl-device, with vga compatibility. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20210430113547.1816178-1-kraxel@redhat.com Message-Id: <20210430113547.1816178-17-kraxel@redhat.com>
2021-05-10virtio-gpu: add virtio-gpu-gl-pciGerd Hoffmann
Add pci proxy for virtio-gpu-gl-device. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20210430113547.1816178-1-kraxel@redhat.com Message-Id: <20210430113547.1816178-15-kraxel@redhat.com>
2021-05-10virtio-gpu: move virtio-gpu-gl-device to separate moduleGerd Hoffmann
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20210430113547.1816178-1-kraxel@redhat.com Message-Id: <20210430113547.1816178-12-kraxel@redhat.com>
2021-05-10virtio-gpu: add virtio-gpu-gl-deviceGerd Hoffmann
Just a skeleton for starters, following patches will add more code. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20210430113547.1816178-1-kraxel@redhat.com Message-Id: <20210430113547.1816178-3-kraxel@redhat.com>
2021-04-01util: fix use-after-free in module_load_oneMarc-André Lureau
g_hash_table_add always retains ownership of the pointer passed in as the key. Its return status merely indicates whether the added entry was new, or replaced an existing entry. Thus key must never be freed after this method returns. Spotted by ASAN: ==2407186==ERROR: AddressSanitizer: heap-use-after-free on address 0x6020003ac4f0 at pc 0x7ffff766659c bp 0x7fffffffd1d0 sp 0x7fffffffc980 READ of size 1 at 0x6020003ac4f0 thread T0 #0 0x7ffff766659b (/lib64/libasan.so.6+0x8a59b) #1 0x7ffff6bfa843 in g_str_equal ../glib/ghash.c:2303 #2 0x7ffff6bf8167 in g_hash_table_lookup_node ../glib/ghash.c:493 #3 0x7ffff6bf9b78 in g_hash_table_insert_internal ../glib/ghash.c:1598 #4 0x7ffff6bf9c32 in g_hash_table_add ../glib/ghash.c:1689 #5 0x5555596caad4 in module_load_one ../util/module.c:233 #6 0x5555596ca949 in module_load_one ../util/module.c:225 #7 0x5555596ca949 in module_load_one ../util/module.c:225 #8 0x5555596cbdf4 in module_load_qom_all ../util/module.c:349 Typical C bug... Fixes: 90629122d2e ("module: use g_hash_table_add()") Cc: qemu-stable@nongnu.org Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Message-Id: <20210316134456.3243102-1-marcandre.lureau@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2021-03-26s390x: modularize virtio-gpu-ccwGerd Hoffmann
Since the virtio-gpu-ccw device depends on the hw-display-virtio-gpu module, which provides the type virtio-gpu-device, packaging the hw-display-virtio-gpu module as a separate package that may or may not be installed along with the qemu package leads to problems. Namely if the hw-display-virtio-gpu is absent, qemu continues to advertise virtio-gpu-ccw, but it aborts not only when one attempts using virtio-gpu-ccw, but also when libvirtd's capability probing tries to instantiate the type to introspect it. Let us thus introduce a module named hw-s390x-virtio-gpu-ccw that is going to provide the virtio-gpu-ccw device. The hw-s390x prefix was chosen because it is not a portable device. With virtio-gpu-ccw built as a module, the correct way to package a modularized qemu is to require that hw-display-virtio-gpu must be installed whenever the module hw-s390x-virtio-gpu-ccw. Signed-off-by: Halil Pasic <pasic@linux.ibm.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Halil Pasic <pasic@linux.ibm.com> Tested-by: Halil Pasic <pasic@linux.ibm.com> Message-Id: <20210317095622.2839895-4-kraxel@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2020-10-29modules: turn off lazy bindingGerd Hoffmann
We want missing symbols fail module load right away instead of having qemu abort later on in case lazy binding fails. Can happen -- for example -- when trying to load a module for a pci device (virtio-gpu-pci) into a qemu without pci support (qemu-system-avr). Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20201028054944.5772-1-kraxel@redhat.com
2020-10-29virtio-gpu: add virtio-vga moduleGerd Hoffmann
Build virtio-gpu vga devices modular. Must be a separate module because not all qemu softmmu variants come with VGA support. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-id: 20201023064618.21409-3-kraxel@redhat.com
2020-10-29virtio-gpu: add virtio-gpu-pci moduleGerd Hoffmann
Build virtio-gpu pci devices modular. Must be a separate module because not all qemu softmmu variants come with PCI support. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20201023064618.21409-2-kraxel@redhat.com
2020-10-21opengl: build opengl helper code modularGerd Hoffmann
Removes opengl dependency from core qemu. The number of shared libraries for qemu-system-x86_64 goes down from 66 to 60 on my system. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-id: 20201019075224.14803-15-kraxel@redhat.com
2020-10-21modules: add spice dependenciesGerd Hoffmann
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-id: 20201019075224.14803-12-kraxel@redhat.com
2020-10-21modules: dependencies infrastructureGerd Hoffmann
Allow modules depending on other modules. module_load_file() gets the option to export symbols (by not adding the G_MODULE_BIND_LOCAL flag). module_load_one() will check the module dependency list to figure (a) whenever are other modules must be loaded first, or (b) the module should export the symbols. The dependencies are specificed as static list in the source code for now as I expect the list will stay small. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-id: 20201019075224.14803-11-kraxel@redhat.com
2020-10-15chardev/spice: build spice chardevs as moduleGerd Hoffmann
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20201014121120.13482-8-kraxel@redhat.com
2020-10-15modules: update qom object module commentGerd Hoffmann
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-id: 20200923103728.12026-1-kraxel@redhat.com
2020-10-15module: silence errors for module_load_qom_all().Gerd Hoffmann
Add mayfail bool parameter to module loading functions. Set it to true for module_load_qom_all() because device modules might not load into all system emulation variants. qemu-system-s390x for example will not load qxl because it lacks vga support. Makes "make check" less chatty. Drop module_loaded_qom_all check in module_load_qom_one to make sure we see errors for explicit load requests, i.e. module_load_qom_one("qxl") failing will log an error no matter whenever module_load_qom_all() was called before or not. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 20200923091217.22662-1-kraxel@redhat.com
2020-09-30module: relocate path to modulesPaolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-09-30oslib: do not call g_strdup from qemu_get_exec_dirPaolo Bonzini
Just return the directory without requiring the caller to free it. This also removes a bogus check for NULL in os_find_datadir and module_load_one; g_strdup of a static variable cannot return NULL. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-09-15virtio-gpu: build modularGerd Hoffmann
Only build virtio-gpu-device modular (the code which actually depends on the external virglrenderer library). virtio-gpu-pci and virtio-vga are compiled into core qemu still. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20200914134224.29769-7-kraxel@redhat.com
2020-08-21meson: replace create-config with meson configure_filePaolo Bonzini
Move the create-config logic to meson.build; create a configuration_data object and let meson handle the quoting and output. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-08-21meson: link emulators without Makefile.targetPaolo Bonzini
The binaries move to the root directory, e.g. qemu-system-i386 or qemu-arm. This requires changes to qtests, CI, etc. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-07-21module: ignore NULL typeGerd Hoffmann
Just return in case module_load_qom_one(NULL) is called. vga_interface_available() can do that. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-Id: <20200720100352.2477-3-kraxel@redhat.com>
2020-07-11Revert "vga: build virtio-gpu as module"Gerd Hoffmann
This reverts commit 8d5a24c83dba90b08ef163bbf166d6dfbad9019b. Compiling all virtio-gpu objects into a single module isn't a good plan because the individual objects have different CONFIG_* dependencies. Leads to module load failures on s390x due to vga support being disabled, which in turn breaks '-device virtio-gpu-device' (flagged by travis ci). So back to the drawing board for modular virtio-gpu ... Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20200710203652.9708-3-kraxel@redhat.com>
2020-07-07chardev: enable modules, use for brailleGerd Hoffmann
Removes brlapi library dependency from core qemu. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20200624131045.14512-11-kraxel@redhat.com
2020-07-07vga: build virtio-gpu as moduleGerd Hoffmann
Drops libvirglrenderer.so dependency from core qemu. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20200624131045.14512-10-kraxel@redhat.com
2020-07-07vga: build qxl as moduleGerd Hoffmann
First step in making spice support modular. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20200624131045.14512-8-kraxel@redhat.com
2020-07-07usb: build usb-redir as moduleGerd Hoffmann
Drops libusbredirparser.so dependency from core qemu. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20200624131045.14512-7-kraxel@redhat.com
2020-07-07ccid: build smartcard as moduleGerd Hoffmann
Drops libcacard.so dependency from core qemu. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20200624131045.14512-6-kraxel@redhat.com
2020-07-07module: qom module supportGerd Hoffmann
Add support for qom types provided by modules. For starters use a manually maintained list which maps qom type to module and prefix. Two load functions are added: One to load the module for a specific type, and one to load all modules (needed for object/device lists as printed by -- for example -- qemu -device help). Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20200624131045.14512-2-kraxel@redhat.com
2020-04-13module: increase dirs array size by oneBruce Rogers
With the module upgrades code change, the statically sized dirs array can now overflow. Increase it's size by one, according to the new maximum possible usage. Fixes: bd83c861c0 ("modules: load modules from versioned /var/run dir") Signed-off-by: Bruce Rogers <brogers@suse.com> Message-Id: <20200411010746.472295-1-brogers@suse.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-03-16modules: load modules from versioned /var/run dirChristian Ehrhardt
On upgrades the old .so files usually are replaced. But on the other hand since a qemu process represents a guest instance it is usually kept around. That makes late addition of dynamic features e.g. 'hot-attach of a ceph disk' fail by trying to load a new version of e.f. block-rbd.so into an old still running qemu binary. This adds a fallback to also load modules from a versioned directory in the temporary /var/run path. That way qemu is providing a way for packaging to store modules of an upgraded qemu package as needed until the next reboot. An example how that can then be used in packaging can be seen in: https://git.launchpad.net/~paelzer/ubuntu/+source/qemu/log/?h=bug-1847361-miss-old-so-on-upgrade-UBUNTU Fixes: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1847361 Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Message-Id: <20200310145806.18335-2-christian.ehrhardt@canonical.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-02-22module: check module wasn't already initializedAlexander Bulekov
The virtual-device fuzzer must initialize QOM, prior to running vl:qemu_init, so that it can use the qos_graph to identify the arguments required to initialize a guest for libqos-assisted fuzzing. This change prevents errors when vl:qemu_init tries to (re)initialize the previously initialized QOM module. Signed-off-by: Alexander Bulekov <alxndr@bu.edu> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Darren Kenny <darren.kenny@oracle.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-id: 20200220041118.23264-4-alxndr@bu.edu Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2020-01-08util/module: fix a memory leakPan Nengyuan
spotted by ASAN Fixes: 81d8ccb1bea4fb9eaaf4c8e30bd4021180a9a39f Reported-by: Euler Robot <euler.robot@huawei.com> Signed-off-by: Pan Nengyuan <pannengyuan@huawei.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-Id: <1576805650-16380-1-git-send-email-pannengyuan@huawei.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-08-21module: return success on module loadMarc-André Lureau
Let the caller know of load success. Note that this also changes slightly the behaviour of the function to try loading on subsequent calls if the previous ones failed. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-08-21module: use g_hash_table_add()Marc-André Lureau
The hashtable is used like a set, use the convenience g_hash_table_add() function. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-06-12Include qemu-common.h exactly where neededMarkus Armbruster
No header includes qemu-common.h after this commit, as prescribed by qemu-common.h's file comment. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20190523143508.25387-5-armbru@redhat.com> [Rebased with conflicts resolved automatically, except for include/hw/arm/xlnx-zynqmp.h hw/arm/nrf51_soc.c hw/arm/msf2-soc.c block/qcow2-refcount.c block/qcow2-cluster.c block/qcow2-cache.c target/arm/cpu.h target/lm32/cpu.h target/m68k/cpu.h target/mips/cpu.h target/moxie/cpu.h target/nios2/cpu.h target/openrisc/cpu.h target/riscv/cpu.h target/tilegx/cpu.h target/tricore/cpu.h target/unicore32/cpu.h target/xtensa/cpu.h; bsd-user/main.c and net/tap-bsd.c fixed up]
2018-08-23module: Use QEMU_MODULE_DIR as a search pathryang
The current paths for modules are CONFIG_QEMU_MODDIR and paths relative to the executable. Qemu and its modules can be installed and executed in paths that are different from these search paths. This change allows a search path to be specified by environment variable. An example usage for this is postmarketOS[1]. This is a build environment for Alpine Linux. It sets up Alpine Linux in a chroot environment. Alpine's Qemu packages are installed in the chroot. The Alpine Linux Qemu package is used to test compiled Alpine Linux system images. This way there isn't a reliance on the which ever version of Qemu the host system / distro provides. postmarketOS executes Qemu on host system outside of the chroot The Qemu module search path needs to point to the location of the chroot relative to the host system. e.g. The root of the Alpine Linux chroot is: ~/.local/var/pmbootstrap/chroot_native/ Alpine's Qemu is installed at ~/.local/var/pmbootstrap/chroot_native/usr/bin/ The Qemu module search path needs to be: QEMU_MODULE_DIR=~/.local/var/pmbootstrap/chroot_native/usr/lib/qemu/ [1] https://postmarketos.org/ Signed-off-by: ryang <decatf@gmail.com> Message-Id: <20180704181010.GA918@computer> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Fam Zheng <famz@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-10-07module: Don't load the same module if requested multiple timesFam Zheng
Use a hash table to keep record of all loaded modules, and return early if the requested module is already loaded. Signed-off-by: Fam Zheng <famz@redhat.com> Message-id: 1473043845-13197-3-git-send-email-famz@redhat.com Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Max Reitz <mreitz@redhat.com>
2016-09-20blockdev: Add dynamic module loading for block driversMarc Mari
Extend the current module interface to allow for block drivers to be loaded dynamically on request. The only block drivers that can be converted into modules are the drivers that don't perform any init operation except for registering themselves. In addition, only the protocol drivers are being modularized, as they are the only ones which see significant performance benefits. The format drivers do not generally link to external libraries, so modularizing them is of no benefit from a performance perspective. All the necessary module information is located in a new structure found in module_block.h This spoils the purpose of 5505e8b76f (block/dmg: make it modular). Before this patch, if module build is enabled, block-dmg.so is linked to libbz2, whereas the main binary is not. In downstream, theoretically, it means only the qemu-block-extra package depends on libbz2, while the main QEMU package needn't to. With this patch, we (temporarily) change the case so that the main QEMU depends on libbz2 again. Signed-off-by: Marc Marí <markmb@redhat.com> Signed-off-by: Colin Lord <clord@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 1471008424-16465-4-git-send-email-clord@redhat.com Reviewed-by: Max Reitz <mreitz@redhat.com> [mreitz: Do a signed comparison against the length of block_driver_modules[], so it will not cause a compile error when empty] Signed-off-by: Max Reitz <mreitz@redhat.com>
2016-06-20coccinelle: Remove unnecessary variables for function return valueEduardo Habkost
Use Coccinelle script to replace 'ret = E; return ret' with 'return E'. The script will do the substitution only when the function return type and variable type are the same. Manual fixups: * audio/audio.c: coding style of "read (...)" and "write (...)" * block/qcow2-cluster.c: wrap line to make it shorter * block/qcow2-refcount.c: change indentation of wrapped line * target-tricore/op_helper.c: fix coding style of "remainder|quotient" * target-mips/dsp_helper.c: reverted changes because I don't want to argue about checkpatch.pl * ui/qemu-pixman.c: fix line indentation * block/rbd.c: restore blank line between declarations and statements Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Message-Id: <1465855078-19435-4-git-send-email-ehabkost@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> [Unused Coccinelle rule name dropped along with a redundant comment; whitespace touched up in block/qcow2-cluster.c; stale commit message paragraph deleted] Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-02-04util: Clean up includesPeter Maydell
Clean up includes so that osdep.h is included first and headers which it implies are not included manually. This commit was created with scripts/clean-includes. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1454089805-5470-6-git-send-email-peter.maydell@linaro.org
2014-07-18module: Don't complain when a module is absentAndreas Färber
The current implementation depends on a configure-time generated list of block modules. When any of them is absent, module_load() emits a warning. This is suboptimal because extracting code to modules was mainly done to allow separate packaging of modules with intrusive dependencies. Absence of optional packages then leads to absence of modules and an error message, which users may recognize as new and report as error. Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Michael Tokarev <mjt@tls.msk.ru> Reviewed-by: Fam Zheng <famz@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-07-18module: Simplify module_load()Andreas Färber
The file path is not used for error reporting, so we can free it directly after use. Reviewed-by: Fam Zheng <famz@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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