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2022-07-13cutils: Introduce bundle mechanismAkihiko Odaki
Developers often run QEMU without installing. The bundle mechanism allows to look up files which should be present in installation even in such a situation. It is a general mechanism and can find any files in the installation tree. The build tree will have a new directory, qemu-bundle, to represent what files the installation tree would have for reference by the executables. Note that it abandons compatibility with Windows older than 8. The extended support for the prior version, 7 ended more than 2 years ago, and it is unlikely that someone would like to run the latest QEMU on such an old system. Signed-off-by: Akihiko Odaki <akihiko.odaki@gmail.com> Suggested-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <20220624145039.49929-3-akihiko.odaki@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-06-29util: add qemu-co-timeoutVladimir Sementsov-Ogievskiy
Add new API, to make a time limited call of the coroutine. Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@openvz.org> Reviewed-by: Hanna Reitz <hreitz@redhat.com> Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
2022-06-21util: Merge cacheflush.c and cacheinfo.cRichard Henderson
Combine the two files into cacheflush.c. There's a couple of bits that would be helpful to share between the two, and combining them seems better than exporting the bits. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-Id: <20220621014837.189139-2-richard.henderson@linaro.org>
2022-04-28meson, configure: move libgio test to mesonPaolo Bonzini
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-04-06util: rename qemu-error.c to match its header nameMarc-André Lureau
The header name is more appropriate. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220323155743.1585078-15-marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-04-06Replace qemu_real_host_page variables with inlined functionsMarc-André Lureau
Replace the global variables with inlined helper functions. getpagesize() is very likely annotated with a "const" function attribute (at least with glibc), and thus optimization should apply even better. This avoids the need for a constructor initialization too. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20220323155743.1585078-12-marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-04-06char: move qemu_openpty_raw from util/ to char/Marc-André Lureau
It is only needed by char-pty. Fix the code style while at it. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20220323155743.1585078-6-marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-04-06meson: add util dependency for oslib-posix on freebsdMarc-André Lureau
kinfo_getproc() requires it. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20220323155743.1585078-3-marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-03-07util: Unify implementations of qemu_memalign()Peter Maydell
We implement qemu_memalign() in both oslib-posix.c and oslib-win32.c, but the two versions are essentially the same: they call qemu_try_memalign(), and abort() after printing an error message if it fails. The only difference is that the win32 version prints the GetLastError() value whereas the POSIX version prints strerror(errno). However, this is a bug in the win32 version: in commit dfbd0b873a85021 in 2020 we changed the implementation of qemu_try_memalign() from using VirtualAlloc() (which sets the GetLastError() value) to using _aligned_malloc() (which sets errno), but didn't update the error message to match. Replace the two separate functions with a single version in a new memalign.c file, which drops the unnecessary extra qemu_oom_check() function and instead prints a more useful message including the requested size and alignment as well as the errno string. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20220226180723.1706285-4-peter.maydell@linaro.org Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2022-02-16configure, meson: move membarrier test to mesonPaolo Bonzini
The test is a bit different from the others, in that it does not run if $membarrier is empty. For meson, the default can simply be disabled; if one day we will toggle the default, no change is needed in meson.build. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-01-12meson: reenable filemonitor-inotify compilationVolker Rümelin
Reenable util/filemonitor-inotify compilation. Compilation was disabled when commit a620fbe9ac ("configure: convert compiler tests to meson, part 5") moved CONFIG_INOTIFY1 from config-host.mak to config-host.h. This fixes the usb-mtp device and reenables test-util-filemonitor. Fixes: a620fbe9ac ("configure: convert compiler tests to meson, part 5") Resolves: https://gitlab.com/qemu-project/qemu/-/issues/800 Signed-off-by: Volker Rümelin <vr_qemu@t-online.de> Message-Id: <20220107133514.7785-1-vr_qemu@t-online.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-01-08qemu/int128: addition of div/rem 128-bit operationsFrédéric Pétrot
Addition of div and rem on 128-bit integers, using the 128/64->128 divu and 64x64->128 mulu in host-utils. These operations will be used within div/rem helpers in the 128-bit riscv target. Signed-off-by: Frédéric Pétrot <frederic.petrot@univ-grenoble-alpes.fr> Co-authored-by: Fabien Portas <fabien.portas@grenoble-inp.org> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-id: 20220106210108.138226-4-frederic.petrot@univ-grenoble-alpes.fr Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2021-10-14configure, meson: move more compiler checks to MesonPaolo Bonzini
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20211007130829.632254-15-pbonzini@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-07-09meson: fix missing preprocessor symbolsPaolo Bonzini
While most libraries do not need a CONFIG_* symbol because the "when:" clauses are enough, some do. Add them back or stop using them if possible. In the case of libpmem, the statement to add the CONFIG_* symbol was still in configure, but could not be triggered because it checked for "no" instead of "disabled" (and it would be wrong anyway since the test for the library has not been done yet). Reported-by: Li Zhijian <lizhijian@cn.fujitsu.com> Fixes: 587d59d6cc ("configure, meson: convert virgl detection to meson", 2021-07-06) Fixes: 83ef16821a ("configure, meson: convert libdaxctl detection to meson", 2021-07-06) Fixes: e36e8c70f6 ("configure, meson: convert libpmem detection to meson", 2021-07-06) Fixes: 53c22b68e3 ("configure, meson: convert liburing detection to meson", 2021-07-06) Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-07-06configure: convert compiler tests to meson, part 1Paolo Bonzini
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-07-06meson: store dependency('threads') in a variablePaolo Bonzini
It can be useful for has_function checks. Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-04-30util: add transactions.cVladimir Sementsov-Ogievskiy
Add simple transaction API to use in further update of block graph operations. Supposed usage is: - "prepare" is main function of the action and it should make the main effect of the action to be visible for the following actions, keeping possibility of roll-back, saving necessary things in action state, which is prepended to the action list (to do that, prepare func should call tran_add()). So, driver struct doesn't include "prepare" field, as it is supposed to be called directly. - commit/rollback is supposed to be called for the list of action states, to commit/rollback all the actions in reverse order - When possible "commit" should not make visible effect for other actions, which make possible transparent logical interaction between actions. Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <20210428151804.439460-9-vsementsov@virtuozzo.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2021-04-01yank: Always link full yank codeLukas Straub
Yank now only depends on util and can be always linked in. Also remove the stubs as they are not needed anymore. Signed-off-by: Lukas Straub <lukasstraub2@web.de> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <997aa12a28c555d8a3b7a363b3bda5c3cf1821ba.1616521341.git.lukasstraub2@web.de>
2021-02-08migration: introduce UFFD-WP low-level interface helpersAndrey Gruzdev
Glue code to the userfaultfd kernel implementation. Querying feature support, createing file descriptor, feature control, memory region registration, IOCTLs on registered registered regions. Signed-off-by: Andrey Gruzdev <andrey.gruzdev@virtuozzo.com> Reviewed-by: Peter Xu <peterx@redhat.com> Message-Id: <20210129101407.103458-3-andrey.gruzdev@virtuozzo.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Fixed up range.start casting for 32bit
2021-01-24util: Add CRC16 (CCITT) calculation routinesBin Meng
Import CRC16 calculation routines from Linux kernel v5.10: include/linux/crc-ccitt.h lib/crc-ccitt.c to QEMU: include/qemu/crc-ccitt.h util/crc-ccitt.c Signed-off-by: Bin Meng <bin.meng@windriver.com> Acked-by: Alistair Francis <alistair.francis@wdc.com> Message-Id: <20210123104016.17485-7-bmeng.cn@gmail.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> [PMD: Restrict compilation to system emulation] Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2021-01-13Introduce yank featureLukas Straub
The yank feature allows to recover from hanging qemu by "yanking" at various parts. Other qemu systems can register themselves and multiple yank functions. Then all yank functions for selected instances can be called by the 'yank' out-of-band qmp command. Available instances can be queried by a 'query-yank' oob command. Signed-off-by: Lukas Straub <lukasstraub2@web.de> Acked-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-Id: <69934ceacfd33a7dfe53db145ecc630ad39ee47c.1609167865.git.lukasstraub2@web.de> Acked-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2021-01-02util: Extract flush_icache_range to cacheflush.cRichard Henderson
This has been a tcg-specific function, but is also in use by hardware accelerators via physmem.c. This can cause link errors when tcg is disabled. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Joelle van Dyne <j@getutm.app> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20201214140314.18544-3-richard.henderson@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-11-03configure: introduce --enable-vhost-user-blk-serverStefan Hajnoczi
Make it possible to compile out the vhost-user-blk server. It is enabled by default on Linux. Note that vhost-user-server.c depends on libvhost-user, which requires CONFIG_LINUX. The CONFIG_VHOST_USER dependency was erroneous since that option controls vhost-user frontends (previously known as "master") and not device backends (previously known as "slave"). Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Message-Id: <20201027173528.213464-3-stefanha@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2020-10-23util/vhost-user-server: use static library in meson.buildStefan Hajnoczi
Don't compile contrib/libvhost-user/libvhost-user.c again. Instead build the static library once and then reuse it throughout QEMU. Also switch from CONFIG_LINUX to CONFIG_VHOST_USER, which is what the vhost-user tools (vhost-user-gpu, etc) do. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 20200924151549.913737-14-stefanha@redhat.com [Added CONFIG_LINUX again because libvhost-user doesn't build on macOS. --Stefan] Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2020-10-23block: move logical block size check function to a common utility functionCoiby Xu
Move the constants from hw/core/qdev-properties.c to util/block-helpers.h so that knowledge of the min/max values is Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Coiby Xu <coiby.xu@gmail.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Acked-by: Eduardo Habkost <ehabkost@redhat.com> Message-id: 20200918080912.321299-5-coiby.xu@gmail.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2020-10-23util/vhost-user-server: generic vhost user serverCoiby Xu
Sharing QEMU devices via vhost-user protocol. Only one vhost-user client can connect to the server one time. Suggested-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Coiby Xu <coiby.xu@gmail.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-id: 20200918080912.321299-4-coiby.xu@gmail.com [Fixed size_t %lu -> %zu format string compiler error. --Stefan] Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2020-08-21util/meson.build: fix fdmon-io_uring buildStefano Garzarella
libqemuutil.a build fails with this error: /usr/bin/ld: libqemuutil.a(util_fdmon-io_uring.c.o): in function `get_sqe': qemu/build/../util/fdmon-io_uring.c:83: undefined reference to `io_uring_get_sqe' /usr/bin/ld: qemu/build/../util/fdmon-io_uring.c:92: undefined reference to `io_uring_submit' /usr/bin/ld: qemu/build/../util/fdmon-io_uring.c:96: undefined reference to `io_uring_get_sqe' /usr/bin/ld: libqemuutil.a(util_fdmon-io_uring.c.o): in function `fdmon_io_uring_wait': qemu/build/../util/fdmon-io_uring.c:289: undefined reference to `io_uring_submit_and_wait' /usr/bin/ld: libqemuutil.a(util_fdmon-io_uring.c.o): in function `fdmon_io_uring_setup': qemu/build/../util/fdmon-io_uring.c:328: undefined reference to `io_uring_queue_init' /usr/bin/ld: libqemuutil.a(util_fdmon-io_uring.c.o): in function `fdmon_io_uring_destroy': qemu/build/../util/fdmon-io_uring.c:343: undefined reference to `io_uring_queue_exit' collect2: error: ld returned 1 exit status This patch fix the issue adding 'linux_io_uring' dependency for fdmon-io_uring.c Fixes: a81df1b68b ("libqemuutil, qapi, trace: convert to meson") Cc: pbonzini@redhat.com Signed-off-by: Stefano Garzarella <sgarzare@redhat.com> Message-Id: <20200821154853.94379-1-sgarzare@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-08-21libqemuutil, qapi, trace: convert to mesonPaolo Bonzini
This shows how to do some "computations" in meson.build using its array and dictionary data structures, and also a basic usage of the sourceset module for conditional compilation. Notice the new "if have_system" part of util/meson.build, which fixes a bug in the old build system was buggy: util/dbus.c was built even for non-softmmu builds, but the dependency on -lgio was lost when the linking was done through libqemuutil.a. Because all of its users required gio otherwise, the bug was hidden. Meson instead propagates libqemuutil's dependencies down to its users, and shows the problem. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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