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* tcg plugins: expose an API version conceptAlex Bennée2019-11-121-0/+19
| | | | | | | | | | | | This is a very simple versioning API which allows the plugin infrastructure to check the API a plugin was built against. We also expose a min/cur API version to the plugin via the info block in case it wants to avoid using old deprecated APIs in the future. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Robert Foley <robert.foley@linaro.org>
* target/arm/cpu64: max cpu: Introduce sve<N> propertiesAndrew Jones2019-11-011-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Introduce cpu properties to give fine control over SVE vector lengths. We introduce a property for each valid length up to the current maximum supported, which is 2048-bits. The properties are named, e.g. sve128, sve256, sve384, sve512, ..., where the number is the number of bits. See the updates to docs/arm-cpu-features.rst for a description of the semantics and for example uses. Note, as sve-max-vq is still present and we'd like to be able to support qmp_query_cpu_model_expansion with guests launched with e.g. -cpu max,sve-max-vq=8 on their command lines, then we do allow sve-max-vq and sve<N> properties to be provided at the same time, but this is not recommended, and is why sve-max-vq is not mentioned in the document. If sve-max-vq is provided then it enables all lengths smaller than and including the max and disables all lengths larger. It also has the side-effect that no larger lengths may be enabled and that the max itself cannot be disabled. Smaller non-power-of-two lengths may, however, be disabled, e.g. -cpu max,sve-max-vq=4,sve384=off provides a guest the vector lengths 128, 256, and 512 bits. This patch has been co-authored with Richard Henderson, who reworked the target/arm/cpu64.c changes in order to push all the validation and auto-enabling/disabling steps into the finalizer, resulting in a nice LOC reduction. Signed-off-by: Andrew Jones <drjones@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Eric Auger <eric.auger@redhat.com> Tested-by: Masayoshi Mizuma <m.mizuma@jp.fujitsu.com> Reviewed-by: Beata Michalska <beata.michalska@linaro.org> Message-id: 20191031142734.8590-5-drjones@redhat.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
* Merge remote-tracking branch ↵Peter Maydell2019-10-305-0/+699
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 'remotes/stsquad/tags/pull-tcg-plugins-281019-4' into staging TCG Plugins initial implementation - use --enable-plugins @ configure - low impact introspection (-plugin empty.so to measure overhead) - plugins cannot alter guest state - example plugins included in source tree (tests/plugins) - -d plugin to enable plugin output in logs - check-tcg runs extra tests when plugins enabled - documentation in docs/devel/plugins.rst # gpg: Signature made Mon 28 Oct 2019 15:13:23 GMT # 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-tcg-plugins-281019-4: (57 commits) travis.yml: enable linux-gcc-debug-tcg cache MAINTAINERS: add me for the TCG plugins code scripts/checkpatch.pl: don't complain about (foo, /* empty */) .travis.yml: add --enable-plugins tests include/exec: wrap cpu_ldst.h in CONFIG_TCG accel/stubs: reduce headers from tcg-stub tests/plugin: add hotpages to analyse memory access patterns tests/plugin: add instruction execution breakdown tests/plugin: add a hotblocks plugin tests/tcg: enable plugin testing tests/tcg: drop test-i386-fprem from TESTS when not SLOW tests/tcg: move "virtual" tests to EXTRA_TESTS tests/tcg: set QEMU_OPTS for all cris runs tests/tcg/Makefile.target: fix path to config-host.mak tests/plugin: add sample plugins linux-user: support -plugin option vl: support -plugin option plugin: add qemu_plugin_outs helper plugin: add qemu_plugin_insn_disas helper plugin: expand the plugin_init function to include an info block ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
| * plugin: add qemu_plugin_outs helperAlex Bennée2019-10-282-0/+7
| | | | | | | | | | | | | | | | | | Having the plugins grab stdout and spew stuff there is a bit ugly and certainly makes the tests look ugly. Provide a hook back into QEMU which can be redirected as needed. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Aaron Lindsay <aaron@os.amperecomputing.com>
| * plugin: add qemu_plugin_insn_disas helperAlex Bennée2019-10-281-0/+9
| | | | | | | | | | | | | | | | | | | | Give the plugins access to the QEMU dissasembler so they don't have to re-invent the wheel. We generate a warning when there are spare bytes in the decode buffer. This is usually due to the front end loading in more bytes than decoded. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
| * plugin: expand the plugin_init function to include an info blockAlex Bennée2019-10-281-2/+24
| | | | | | | | | | | | | | | | This provides a limited amount of info to plugins about the guest system that will allow them to make some additional decisions on setup. Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
| * plugins: implement helpers for resolving hwaddrAlex Bennée2019-10-282-0/+48
| | | | | | | | | | | | | | | | | | | | | | We need to keep a local per-cpu copy of the data as other threads may be running. Currently we can provide insight as to if the access was IO or not and give the offset into a given device (usually the main RAMBlock). We store enough information to get details such as the MemoryRegion which might be useful in later expansions to the API. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
| * queue: add QTAILQ_REMOVE_SEVERALEmilio G. Cota2019-10-281-0/+10
| | | | | | | | | | | | | | | | | | | | This is faster than removing elements one by one. Will gain a user soon. Signed-off-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
| * plugin: add implementation of the apiAlex Bennée2019-10-281-3/+0Star
| | | | | | | | | | | | [AJB: split from the core code commit] Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
| * plugin: add core codeEmilio G. Cota2019-10-281-0/+255
| | | | | | | | | | | | | | Signed-off-by: Emilio G. Cota <cota@braap.org> [AJB: moved directory and merged various fixes] Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
| * plugin: add user-facing APIEmilio G. Cota2019-10-281-0/+351
| | | | | | | | | | | | | | | | Add the API first to ease review. Signed-off-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* | Merge remote-tracking branch 'remotes/maxreitz/tags/pull-block-2019-10-28' ↵Peter Maydell2019-10-282-0/+78
|\ \ | |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | into staging Block patches for softfreeze: - iotest patches - Improve performance of the mirror block job in write-blocking mode - Limit memory usage for the backup block job - Add discard and write-zeroes support to the NVMe host block driver - Fix a bug in the mirror job - Prevent the qcow2 driver from creating technically non-compliant qcow2 v3 images (where there is not enough extra data for snapshot table entries) - Allow callers of bdrv_truncate() (etc.) to determine whether the file must be resized to the exact given size or whether it is OK for block devices not to shrink # gpg: Signature made Mon 28 Oct 2019 12:13:53 GMT # gpg: using RSA key 91BEB60A30DB3E8857D11829F407DB0061D5CF40 # gpg: issuer "mreitz@redhat.com" # gpg: Good signature from "Max Reitz <mreitz@redhat.com>" [full] # Primary key fingerprint: 91BE B60A 30DB 3E88 57D1 1829 F407 DB00 61D5 CF40 * remotes/maxreitz/tags/pull-block-2019-10-28: (69 commits) qemu-iotests: restrict 264 to qcow2 only Revert "qemu-img: Check post-truncation size" block: Pass truncate exact=true where reasonable block: Let format drivers pass @exact block: Evaluate @exact in protocol drivers block: Add @exact parameter to bdrv_co_truncate() block: Do not truncate file node when formatting block/cor: Drop cor_co_truncate() block: Handle filter truncation like native impl. iotests: Test qcow2's snapshot table handling iotests: Add peek_file* functions qcow2: Fix v3 snapshot table entry compliancy qcow2: Repair snapshot table with too many entries qcow2: Fix overly long snapshot tables qcow2: Keep track of the snapshot table length qcow2: Fix broken snapshot table entries qcow2: Add qcow2_check_fix_snapshot_table() qcow2: Separate qcow2_check_read_snapshot_table() qcow2: Write v3-compliant snapshot list on upgrade qcow2: Put qcow2_upgrade() into its own function ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
| * include: Move endof() up from hw/virtio/virtio.hMax Reitz2019-10-281-0/+7
| | | | | | | | | | | | | | | | | | endof() is a useful macro, we can make use of it outside of virtio. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 20191011152814.14791-2-mreitz@redhat.com Signed-off-by: Max Reitz <mreitz@redhat.com>
| * util: introduce SharedResourceVladimir Sementsov-Ogievskiy2019-10-281-0/+71
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Introduce an API for some shared splittable resource, like memory. It's going to be used by backup. Backup uses both read/write io and copy_range. copy_range may consume memory implictly, so the new API is abstract: it doesn't allocate any real memory but only hands out tickets. The idea is that we have some total amount of something and callers should wait in coroutine queue if there is not enough of the resource at the moment. Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Message-id: 20191022111805.3432-5-vsementsov@virtuozzo.com Signed-off-by: Max Reitz <mreitz@redhat.com>
* | core: replace getpagesize() with qemu_real_host_page_sizeWei Yang2019-10-261-2/+2
|/ | | | | | | | | | | | | | | | | | | | | There are three page size in qemu: real host page size host page size target page size All of them have dedicate variable to represent. For the last two, we use the same form in the whole qemu project, while for the first one we use two forms: qemu_real_host_page_size and getpagesize(). qemu_real_host_page_size is defined to be a replacement of getpagesize(), so let it serve the role. [Note] Not fully tested for some arch or device. Signed-off-by: Wei Yang <richardw.yang@linux.intel.com> Message-Id: <20191013021145.16011-3-richardw.yang@linux.intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* coroutine: Add qemu_co_mutex_assert_locked()Kevin Wolf2019-10-251-0/+15
| | | | | | | | | | | | | | Some functions require that the caller holds a certain CoMutex for them to operate correctly. Add a function so that they can assert the lock is really held. Cc: qemu-stable@nongnu.org Signed-off-by: Kevin Wolf <kwolf@redhat.com> Tested-by: Michael Weiser <michael.weiser@gmx.de> Reviewed-by: Michael Weiser <michael.weiser@gmx.de> Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Reviewed-by: Denis V. Lunev <den@openvz.org> Reviewed-by: Max Reitz <mreitz@redhat.com>
* qemu-coroutine-sleep: introduce qemu_co_sleep_wakeVladimir Sementsov-Ogievskiy2019-10-221-2/+21
| | | | | | | | | | | Introduce a function to gracefully wake a coroutine sleeping in qemu_co_sleep_ns(). Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20191009084158.15614-2-vsementsov@virtuozzo.com> Signed-off-by: Eric Blake <eblake@redhat.com>
* util/hbitmap: strict hbitmap_resetVladimir Sementsov-Ogievskiy2019-10-171-0/+5
| | | | | | | | | | | | | | | | | | | | hbitmap_reset has an unobvious property: it rounds requested region up. It may provoke bugs, like in recently fixed write-blocking mode of mirror: user calls reset on unaligned region, not keeping in mind that there are possible unrelated dirty bytes, covered by rounded-up region and information of this unrelated "dirtiness" will be lost. Make hbitmap_reset strict: assert that arguments are aligned, allowing only one exception when @start + @count == hb->orig_size. It's needed to comfort users of hbitmap_next_dirty_area, which cares about hb->orig_size. Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Message-Id: <20190806152611.280389-1-vsementsov@virtuozzo.com> [Maintainer edit: Max's suggestions from on-list. --js] [Maintainer edit: Eric's suggestion for aligned macro. --js] Signed-off-by: John Snow <jsnow@redhat.com>
* rcu: Add automatically released rcu_read_lock variantsDr. David Alan Gilbert2019-10-111-0/+25
| | | | | | | | | | | | | | | | | | | | | | RCU_READ_LOCK_GUARD() takes the rcu_read_lock and then uses glib's g_auto infrastructure (and thus whatever the compiler's hooks are) to release it on all exits of the block. WITH_RCU_READ_LOCK_GUARD() is similar but is used as a wrapper for the lock, i.e.: WITH_RCU_READ_LOCK_GUARD() { stuff under lock } Note the 'unused' attribute is needed to work around clang bug: https://bugs.llvm.org/show_bug.cgi?id=43482 Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Message-Id: <20191007143642.301445-2-dgilbert@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
* qemu/compiler.h: Add qemu_build_not_reachedRichard Henderson2019-09-251-0/+15
| | | | | | | | Use this as a compile-time assert that a particular code path is not reachable. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* cputlb: Disable __always_inline__ without optimizationRichard Henderson2019-09-251-0/+11
| | | | | | | | | | | This forced inlining can result in missing symbols, which makes a debugging build harder to follow. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: David Hildenbrand <david@redhat.com> Reported-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* xen / notify: introduce a new XenWatchList abstractionPaul Durrant2019-09-241-0/+2
| | | | | | | | | | | | | | | | | | | | Xenstore watch call-backs are already abstracted away from XenBus using the XenWatch data structure but the associated NotifierList manipulation and file handle registration is still open coded in various xen_bus_...() functions. This patch creates a new XenWatchList data structure to allow these interactions to be abstracted away from XenBus as well. This is in preparation for a subsequent patch which will introduce separate watch lists for XenBus and XenDevice objects. NOTE: This patch also introduces a new notifier_list_empty() helper function for the purposes of adding an assertion that a XenWatchList is not freed whilst its associated NotifierList is still occupied. Signed-off-by: Paul Durrant <paul.durrant@citrix.com> Reviewed-by: Anthony Perard <anthony.perard@citrix.com> Message-Id: <20190913082159.31338-2-paul.durrant@citrix.com> Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
* cutils: Move size_to_str() from "qemu-common.h" to "qemu/cutils.h"Philippe Mathieu-Daudé2019-09-191-0/+2
| | | | | | | | | | | | | | "qemu/cutils.h" contains various qemu_strtosz_*() functions useful to convert strings to size. It seems natural to have the opposite usage (from size to string) there too. The function definition is already in util/cutils.c. Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: John Snow <jsnow@redhat.com> Reviewed-by: Peter Xu <peterx@redhat.com> Message-Id: <20190903120555.7551-1-philmd@redhat.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* qemu-thread: Add qemu_cond_timedwaitYury Kotov2019-09-161-0/+19
| | | | | | | | | | | | | The new function is needed to implement conditional sleep for CPU throttling. It's possible to reuse qemu_sem_timedwait, but it's more difficult than just add qemu_cond_timedwait. Also moved compute_abs_deadline function up the code to reuse it in qemu_cond_timedwait_impl win32. Signed-off-by: Yury Kotov <yury-kotov@yandex-team.ru> Message-Id: <20190909131335.16848-2-yury-kotov@yandex-team.ru> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* memory: fetch pmem size in get_file_size()Stefan Hajnoczi2019-09-161-13/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Neither stat(2) nor lseek(2) report the size of Linux devdax pmem character device nodes. Commit 314aec4a6e06844937f1677f6cba21981005f389 ("hostmem-file: reject invalid pmem file sizes") added code to hostmem-file.c to fetch the size from sysfs and compare against the user-provided size=NUM parameter: if (backend->size > size) { error_setg(errp, "size property %" PRIu64 " is larger than " "pmem file \"%s\" size %" PRIu64, backend->size, fb->mem_path, size); return; } It turns out that exec.c:qemu_ram_alloc_from_fd() already has an equivalent size check but it skips devdax pmem character devices because lseek(2) returns 0: if (file_size > 0 && file_size < size) { error_setg(errp, "backing store %s size 0x%" PRIx64 " does not match 'size' option 0x" RAM_ADDR_FMT, mem_path, file_size, size); return NULL; } This patch moves the devdax pmem file size code into get_file_size() so that we check the memory size in a single place: qemu_ram_alloc_from_fd(). This simplifies the code and makes it more general. This also fixes the problem that hostmem-file only checks the devdax pmem file size when the pmem=on parameter is given. An unchecked size=NUM parameter can lead to SIGBUS in QEMU so we must always fetch the file size for Linux devdax pmem character device nodes. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Message-Id: <20190830093056.12572-1-stefanha@redhat.com> Reviewed-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into stagingPeter Maydell2019-09-131-13/+0Star
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Block layer patches: - qcow2: Allow overwriting multiple compressed clusters at once for better performance - nfs: add support for nfs_umount - file-posix: write_zeroes fixes - qemu-io, blockdev-create, pr-manager: Fix crashes and memory leaks - qcow2: Fix the calculation of the maximum L2 cache size - vpc: Fix return code for vpc_co_create() - blockjob: Code cleanup - iotests improvements (e.g. for use with valgrind) # gpg: Signature made Fri 13 Sep 2019 11:19:19 BST # gpg: using RSA key 7F09B272C88F2FD6 # gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" [full] # Primary key fingerprint: DC3D EB15 9A9A F95D 3D74 56FE 7F09 B272 C88F 2FD6 * remotes/kevin/tags/for-upstream: (23 commits) qcow2: Stop overwriting compressed clusters one by one block/create: Do not abort if a block driver is not available qemu-io: Don't leak pattern file in error path iotests: extend sleeping time under Valgrind iotests: extended timeout under Valgrind iotests: Valgrind fails with nonexistent directory iotests: Add casenotrun report to bash tests iotests: exclude killed processes from running under Valgrind iotests: allow Valgrind checking all QEMU processes block/nfs: add support for nfs_umount block/nfs: tear down aio before nfs_close iotests: skip 232 when run tests as root iotests: Test blockdev-create for vpc iotests: Restrict nbd Python tests to nbd iotests: Restrict file Python tests to file iotests: Add supported protocols to execute_test() vpc: Return 0 from vpc_co_create() on success file-posix: Fix has_write_zeroes after NO_FALLBACK pr-manager: Fix invalid g_free() crash bug iotests: Test reverse sub-cluster qcow2 writes ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
| * job: drop job_drainVladimir Sementsov-Ogievskiy2019-09-101-13/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | In job_finish_sync job_enter should be enough for a job to make some progress and draining is a wrong tool for it. So use job_enter directly here and drop job_drain with all related staff not used more. Suggested-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Tested-by: John Snow <jsnow@redhat.com> Reviewed-by: John Snow <jsnow@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* | linux-user: add memfd_createShu-Chun Weng2019-09-111-0/+4
|/ | | | | | | | | | | Add support for the memfd_create syscall. If the host does not have the libc wrapper, translate to a direct syscall with NC-macro. Buglink: https://bugs.launchpad.net/qemu/+bug/1734792 Signed-off-by: Shu-Chun Weng <scw@google.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20190819180947.180725-1-scw@google.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* socket: Add backlog parameter to socket_listenJuan Quintela2019-09-031-1/+1
| | | | | | | | | | Current parameter was always one. We continue with that value for now in all callers. Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> --- Moved trace to socket_listen
* block/qcow2: implement .bdrv_co_pwritev(_compressed)_partVladimir Sementsov-Ogievskiy2019-08-271-0/+1
| | | | | | | | | | Implement and use new interface to get rid of hd_qiov. Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 20190604161514.262241-13-vsementsov@virtuozzo.com Message-Id: <20190604161514.262241-13-vsementsov@virtuozzo.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* util/iov: improve qemu_iovec_is_zeroVladimir Sementsov-Ogievskiy2019-08-271-1/+1
| | | | | | | | | | | | | | | | We'll need to check a part of qiov soon, so implement it now. Optimization with align down to 4 * sizeof(long) is dropped due to: 1. It is strange: it aligns length of the buffer, but where is a guarantee that buffer pointer is aligned itself? 2. buffer_is_zero() is a better place for optimizations and it has them. Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 20190604161514.262241-3-vsementsov@virtuozzo.com Message-Id: <20190604161514.262241-3-vsementsov@virtuozzo.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* util/iov: introduce qemu_iovec_init_extendedVladimir Sementsov-Ogievskiy2019-08-271-0/+7
| | | | | | | | | | | | | | Introduce new initialization API, to create requests with padding. Will be used in the following patch. New API uses qemu_iovec_init_buf if resulting io vector has only one element, to avoid extra allocations. So, we need to update qemu_iovec_destroy to support destroying such QIOVs. Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 20190604161514.262241-2-vsementsov@virtuozzo.com Message-Id: <20190604161514.262241-2-vsementsov@virtuozzo.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* module: return success on module loadMarc-André Lureau2019-08-211-1/+1
| | | | | | | | | | 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>
* util/qemu-timer: refactor deadline calculation for external timersPavel Dovgalyuk2019-08-201-2/+6
| | | | | | | | | | | | | | | | | | | | | | | | | icount-based record/replay uses qemu_clock_deadline_ns_all to measure the period until vCPU may be interrupted. This function takes in account the virtual timers, because they belong to the virtual devices that may generate interrupt request or affect the virtual machine state. However, there are a subset of virtual timers, that are marked with 'external' flag. These do not change the virtual machine state and only based on virtual clock. Calculating the deadling using the external timers breaks the determinism, because they do not belong to the replayed part of the virtual machine. This patch fixes the deadline calculation for this case by adding new parameter for skipping the external timers when it is needed. Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru> -- v2 changes: - added new parameter for timer attribute mask Message-Id: <156404426682.18669.17014100602930969222.stgit@pasha-Precision-3630-Tower> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* timer: last, remove last bits of lastDr. David Alan Gilbert2019-08-201-13/+0Star
| | | | | | | | | The reset notifiers kept a 'last' counter to notice jumps; now that we've remove the notifier we don't need to keep 'last'. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Message-Id: <20190724115823.4199-5-dgilbert@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* timer: Remove reset notifiersDr. David Alan Gilbert2019-08-201-22/+0Star
| | | | | | | | | Remove the reset notifer from the core qemu-timer code. The only user was mc146818 and we've just remove it's use. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Message-Id: <20190724115823.4199-3-dgilbert@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* sysemu: Move the VMChangeStateEntry typedef to qemu/typedefs.hMarkus Armbruster2019-08-161-0/+1
| | | | | | | | | | | | | | | | | | | | | | In my "build everything" tree, changing sysemu/sysemu.h triggers a recompile of some 1800 out of 6600 objects (not counting tests and objects that don't depend on qemu/osdep.h, down from 5400 due to the previous commit). Several headers include sysemu/sysemu.h just to get typedef VMChangeStateEntry. Move it from sysemu/sysemu.h to qemu/typedefs.h. Spell its structure tag the same while there. Drop the now superfluous includes of sysemu/sysemu.h from headers. Touching sysemu/sysemu.h now recompiles some 1100 objects. qemu/uuid.h also drops from 1800 to 1100, and qapi/qapi-types-run-state.h from 5000 to 4400. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20190812052359.30071-29-armbru@redhat.com> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
* Include sysemu/hostmem.h lessMarkus Armbruster2019-08-161-0/+1
| | | | | | | | | | | | | | | Move the HostMemoryBackend typedef from sysemu/hostmem.h to qemu/typedefs.h. This renders a few inclusions of sysemu/hostmem.h superfluous; drop them. Cc: Eduardo Habkost <ehabkost@redhat.com> Cc: Igor Mammedov <imammedo@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Eduardo Habkost <ehabkost@redhat.com> Reviewed-by: Igor Mammedov <imammedo@redhat.com> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20190812052359.30071-25-armbru@redhat.com>
* Include qemu/queue.h slightly lessMarkus Armbruster2019-08-161-2/+0Star
| | | | | | | Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20190812052359.30071-20-armbru@redhat.com>
* Include migration/vmstate.h lessMarkus Armbruster2019-08-161-1/+0Star
| | | | | | | | | | | | | | | | | | In my "build everything" tree, changing migration/vmstate.h triggers a recompile of some 2700 out of 6600 objects (not counting tests and objects that don't depend on qemu/osdep.h). hw/hw.h supposedly includes it for convenience. Several other headers include it just to get VMStateDescription. The previous commit made that unnecessary. Include migration/vmstate.h only where it's still needed. Touching it now recompiles only some 1600 objects. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-Id: <20190812052359.30071-16-armbru@redhat.com> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
* migration: Move the VMStateDescription typedef to typedefs.hMarkus Armbruster2019-08-161-0/+1
| | | | | | | | | | | | | | | We declare incomplete struct VMStateDescription in a couple of places so we don't have to include migration/vmstate.h for the typedef. That's fine with me. However, the next commit will drop migration/vmstate.h from a massive number of compiles. Move the typedef to qemu/typedefs.h now, so I don't have to insert struct in front of VMStateDescription all over the place then. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20190812052359.30071-15-armbru@redhat.com>
* Include hw/irq.h a lot lessMarkus Armbruster2019-08-161-0/+9
| | | | | | | | | | | | | | | | | | | In my "build everything" tree, changing hw/irq.h triggers a recompile of some 5400 out of 6600 objects (not counting tests and objects that don't depend on qemu/osdep.h). hw/hw.h supposedly includes it for convenience. Several other headers include it just to get qemu_irq and.or qemu_irq_handler. Move the qemu_irq and qemu_irq_handler typedefs from hw/irq.h to qemu/typedefs.h, and then include hw/irq.h only where it's still needed. Touching it now recompiles only some 500 objects. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20190812052359.30071-13-armbru@redhat.com>
* typedefs: Separate incomplete types and function typesMarkus Armbruster2019-08-161-3/+23
| | | | | | | | | | | While there, rewrite the obsolete file comment. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20190812052359.30071-12-armbru@redhat.com> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> [File comment rewritten, commit message adjusted]
* queue: Drop superfluous #include qemu/atomic.hMarkus Armbruster2019-08-161-2/+0Star
| | | | | | | | | | | | | | When commit 5f7d05ecfda added QLIST_INSERT_HEAD_RCU() to qemu/queue.h, it had to include qemu/atomic.h. Commit 341774fe6cc removed QLIST_INSERT_HEAD_RCU() again, but neglected to remove the #include. Do that now. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20190812052359.30071-6-armbru@redhat.com>
* Include generated QAPI headers lessMarkus Armbruster2019-08-161-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some of the generated qapi-types-MODULE.h are included all over the place. Changing a QAPI type can trigger massive recompiling. Top scorers recompile more than 1000 out of some 6600 objects (not counting tests and objects that don't depend on qemu/osdep.h): 6300 qapi/qapi-builtin-types.h 5700 qapi/qapi-types-run-state.h 3900 qapi/qapi-types-common.h 3300 qapi/qapi-types-sockets.h 3000 qapi/qapi-types-misc.h 3000 qapi/qapi-types-crypto.h 3000 qapi/qapi-types-job.h 3000 qapi/qapi-types-block-core.h 2800 qapi/qapi-types-block.h 1300 qapi/qapi-types-net.h Clean up headers to include generated QAPI headers only where needed. Impact is negligible except for hw/qdev-properties.h. This header includes qapi/qapi-types-block.h and qapi/qapi-types-misc.h. They are used only in expansions of property definition macros such as DEFINE_PROP_BLOCKDEV_ON_ERROR() and DEFINE_PROP_OFF_AUTO(). Moving their inclusion from hw/qdev-properties.h to the users of these macros avoids pointless recompiles. This is how other property definition macros, such as DEFINE_PROP_NETDEV(), already work. Improves things for some of the top scorers: 3600 qapi/qapi-types-common.h 2800 qapi/qapi-types-sockets.h 900 qapi/qapi-types-misc.h 2200 qapi/qapi-types-crypto.h 2100 qapi/qapi-types-job.h 2100 qapi/qapi-types-block-core.h 270 qapi/qapi-types-block.h Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20190812052359.30071-3-armbru@redhat.com>
* include: Make headers more self-containedMarkus Armbruster2019-08-163-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Back in 2016, we discussed[1] rules for headers, and these were generally liked: 1. Have a carefully curated header that's included everywhere first. We got that already thanks to Peter: osdep.h. 2. Headers should normally include everything they need beyond osdep.h. If exceptions are needed for some reason, they must be documented in the header. If all that's needed from a header is typedefs, put those into qemu/typedefs.h instead of including the header. 3. Cyclic inclusion is forbidden. This patch gets include/ closer to obeying 2. It's actually extracted from my "[RFC] Baby steps towards saner headers" series[2], which demonstrates a possible path towards checking 2 automatically. It passes the RFC test there. [1] Message-ID: <87h9g8j57d.fsf@blackfin.pond.sub.org> https://lists.nongnu.org/archive/html/qemu-devel/2016-03/msg03345.html [2] Message-Id: <20190711122827.18970-1-armbru@redhat.com> https://lists.nongnu.org/archive/html/qemu-devel/2019-07/msg02715.html Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-Id: <20190812052359.30071-2-armbru@redhat.com> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
* bitmap: Add bitmap_copy_with_{src|dst}_offset()Peter Xu2019-07-151-0/+9
| | | | | | | | | | | | | | | | | | | These helpers copy the source bitmap to destination bitmap with a shift either on the src or dst bitmap. Meanwhile, we never have bitmap tests but we should. This patch also introduces the initial test cases for utils/bitmap.c but it only tests the newly introduced functions. Signed-off-by: Peter Xu <peterx@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Message-Id: <20190603065056.25211-5-peterx@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com> --- Bitmap test used sizeof(unsigned long) instead of BITS_PER_LONG.
* include/qemu/atomic.h: Add signal_barrierRichard Henderson2019-07-141-0/+11
| | | | | | | | We have some potential race conditions vs our user-exec signal handler that will be solved with this barrier. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* Include qemu-common.h exactly where neededMarkus Armbruster2019-06-1210-10/+0Star
| | | | | | | | | | | | | | | | 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]
* qemu-common: Move qemu_isalnum() etc. to qemu/ctype.hMarkus Armbruster2019-06-111-0/+27
| | | | | | Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20190523143508.25387-3-armbru@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2025-02-04 13:46:11 +0100