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2019-08-27block/qcow2: implement .bdrv_co_pwritev(_compressed)_partVladimir Sementsov-Ogievskiy1-0/+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>
2019-08-27util/iov: improve qemu_iovec_is_zeroVladimir Sementsov-Ogievskiy1-1/+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>
2019-08-27util/iov: introduce qemu_iovec_init_extendedVladimir Sementsov-Ogievskiy1-0/+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>
2019-08-21module: return success on module loadMarc-André Lureau1-1/+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>
2019-08-20util/qemu-timer: refactor deadline calculation for external timersPavel Dovgalyuk1-2/+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>
2019-08-20timer: last, remove last bits of lastDr. David Alan Gilbert1-13/+0
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>
2019-08-20timer: Remove reset notifiersDr. David Alan Gilbert1-22/+0
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>
2019-08-16sysemu: Move the VMChangeStateEntry typedef to qemu/typedefs.hMarkus Armbruster1-0/+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>
2019-08-16Include sysemu/hostmem.h lessMarkus Armbruster1-0/+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>
2019-08-16Include qemu/queue.h slightly lessMarkus Armbruster1-2/+0
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>
2019-08-16Include migration/vmstate.h lessMarkus Armbruster1-1/+0
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>
2019-08-16migration: Move the VMStateDescription typedef to typedefs.hMarkus Armbruster1-0/+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>
2019-08-16Include hw/irq.h a lot lessMarkus Armbruster1-0/+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>
2019-08-16typedefs: Separate incomplete types and function typesMarkus Armbruster1-3/+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]
2019-08-16queue: Drop superfluous #include qemu/atomic.hMarkus Armbruster1-2/+0
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>
2019-08-16Include generated QAPI headers lessMarkus Armbruster1-1/+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>
2019-08-16include: Make headers more self-containedMarkus Armbruster3-1/+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>
2019-07-15bitmap: Add bitmap_copy_with_{src|dst}_offset()Peter Xu1-0/+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.
2019-07-14include/qemu/atomic.h: Add signal_barrierRichard Henderson1-0/+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>
2019-06-12Include qemu-common.h exactly where neededMarkus Armbruster10-10/+0
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]
2019-06-11qemu-common: Move qemu_isalnum() etc. to qemu/ctype.hMarkus Armbruster1-0/+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>
2019-05-22util: Add qemu_guest_getrandom and associated routinesRichard Henderson1-0/+68
This routine is intended to produce high-quality random numbers to the guest. Normally, such numbers are crypto quality from the host, but a command-line option can force the use of a fully deterministic sequence for use while debugging. Reviewed-by: Laurent Vivier <lvivier@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-05-13Clean up decorations and whitespace around header guardsMarkus Armbruster1-1/+1
Cleaned up with scripts/clean-header-guards.pl. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20190315145123.28030-9-armbru@redhat.com>
2019-05-13Normalize header guard symbol definition.Markus Armbruster3-3/+3
We commonly define the header guard symbol without an explicit value. Normalize the exceptions. Done with scripts/clean-header-guards.pl. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20190315145123.28030-8-armbru@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2019-05-13Clean up ill-advised or unusual header guardsMarkus Armbruster2-5/+5
Leading underscores are ill-advised because such identifiers are reserved. Trailing underscores are merely ugly. Strip both. Our header guards commonly end in _H. Normalize the exceptions. Done with scripts/clean-header-guards.pl. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20190315145123.28030-7-armbru@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> [Changes to slirp/ dropped, as we're about to spin it off]
2019-05-13Clean up header guards that don't match their file nameMarkus Armbruster1-3/+3
Header guard symbols should match their file name to make guard collisions less likely. Cleaned up with scripts/clean-header-guards.pl, followed by some renaming of new guard symbols picked by the script to better ones. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20190315145123.28030-6-armbru@redhat.com> [Rebase to master: update include/hw/net/ne2000-isa.h]
2019-05-07osdep: Fix mingw compilation regarding stdio formatsCao Jiaxi1-5/+5
I encountered the following compilation error on mingw: /mnt/d/qemu/include/qemu/osdep.h:97:9: error: '__USE_MINGW_ANSI_STDIO' macro redefined [-Werror,-Wmacro-redefined] #define __USE_MINGW_ANSI_STDIO 1 ^ /mnt/d/llvm-mingw/aarch64-w64-mingw32/include/_mingw.h:433:9: note: previous definition is here #define __USE_MINGW_ANSI_STDIO 0 /* was not defined so it should be 0 */ It turns out that __USE_MINGW_ANSI_STDIO must be set before any system headers are included, not just before stdio.h. Signed-off-by: Cao Jiaxi <driver1998@foxmail.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Stefan Weil <sw@weilnetz.de> Message-id: 20190503003719.10233-1-driver1998@foxmail.com Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-05-07QEMU_PACKED: Remove gcc_struct attribute in Windows non x86 targetsCao Jiaxi1-1/+1
gcc_struct is for x86 only, and it generates an warning on ARM64 Clang/MinGW targets. Signed-off-by: Cao Jiaxi <driver1998@foxmail.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Message-id: 20190503003618.10089-1-driver1998@foxmail.com [PMM: dropped the slirp change as slirp is now a submodule] Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-04-29hw/devices: Move TI touchscreen declarations into a new headerPhilippe Mathieu-Daudé1-1/+0
Since uWireSlave is only used in this new header, there is no need to expose it via "qemu/typedefs.h". Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-id: 20190412165416.7977-9-philmd@redhat.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-04-25util/mmap-alloc: Add a 'is_pmem' parameter to qemu_ram_mmapZhang Yi1-1/+20
besides the existing 'shared' flags, we are going to add 'is_pmem' to qemu_ram_mmap(), which indicated the memory backend file is a persist memory. Signed-off-by: Haozhong Zhang <haozhong.zhang@intel.com> Signed-off-by: Zhang Yi <yi.z.zhang@linux.intel.com> Reviewed-by: Pankaj Gupta <pagupta@redhat.com> Message-Id: <786c46862cfeb253ee0ea2f44d62ffe76edb7fa4.1549555521.git.yi.z.zhang@linux.intel.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Pankaj Gupta <pagupta@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2019-04-18include: Move fprintf_function to disas/Markus Armbruster1-14/+0
The previous commits have eliminated fprintf_function outside disassemblers, simplifying code and cleaning up the ugly type-punning fprintf_function seems to attract. Move fprintf_function to include/disas/dis-asm.h to reduce the temptation to abuse it. I considered renaming it to fprintf_ftype (reverting that part of commit 6e2d864edf5, v0.14.0) to get us closer to binutils, but I figure the fork is too distant to make this worthwhile. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Message-Id: <20190417191805.28198-18-armbru@redhat.com>
2019-04-18qemu-print: New qemu_fprintf(), qemu_vfprintf()Markus Armbruster1-0/+4
Code that doesn't want to know about current monitor vs. stdout vs. stderr takes an fprintf_function callback and a FILE * argument to pass to it. Actual arguments are either fprintf() and stdout or stderr, or monitor_fprintf() and the current monitor cast to FILE *. monitor_fprintf() casts it right back, and is otherwise identical to monitor_printf(). The type-punning is ugly. New qemu_fprintf() and qemu_vprintf() address this need without type punning: they are like fprintf() and vfprintf(), except they print to the current monitor when passed a null FILE *. The next commits will put them to use. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Message-Id: <20190417191805.28198-14-armbru@redhat.com>
2019-04-18qsp: Simplify how qsp_report() printsMarkus Armbruster1-4/+2
qsp_report() takes an fprintf()-like callback and a FILE * to pass to it. Its only caller hmp_sync_profile() passes monitor_fprintf() and the current monitor cast to FILE *. monitor_fprintf() casts it right back, and is otherwise identical to monitor_printf(). The type-punning is ugly. Drop the callback, and call qemu_printf() instead. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Message-Id: <20190417191805.28198-7-armbru@redhat.com>
2019-04-18include: Include fprintf-fn.h only where neededMarkus Armbruster1-2/+0
Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Message-Id: <20190417191805.28198-2-armbru@redhat.com>
2019-04-18qemu-print: New qemu_printf(), qemu_vprintf() etc.Markus Armbruster1-0/+19
We commonly want to print to the current monitor if we have one, else to stdout/stderr. For stderr, have error_printf(). For stdout, all we have is monitor_vfprintf(), which is rather unwieldy. We often print to stderr just because error_printf() is easier. New qemu_printf() and qemu_vprintf() do exactly what's needed. The next commits will put them to use. Cc: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Message-Id: <20190417190641.26814-12-armbru@redhat.com>
2019-04-18monitor error: Make printf()-like functions return a valueMarkus Armbruster1-4/+4
printf() & friends return the number of characters written on success, negative value on error. monitor_printf(), monitor_vfprintf(), monitor_vprintf(), error_printf(), error_printf_unless_qmp(), error_vprintf(), and error_vprintf_unless_qmp() return void. Some of them carry a TODO comment asking for int instead. Improve them to return int like printf() does. This makes our use of monitor_printf() as fprintf_function slightly less dirty: the function cast no longer adds a return value that isn't there. It still changes a parameter's pointer type. That will be addressed in a future commit. monitor_vfprintf() always returns zero. Improve it to return the proper value. Cc: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Message-Id: <20190417190641.26814-11-armbru@redhat.com>
2019-04-17log: Make glib logging go through QEMUChristophe Fergeau1-1/+2
This commit adds a error_init() helper which calls g_log_set_default_handler() so that glib logs (g_log, g_warning, ...) are handled similarly to other QEMU logs. This means they will get a timestamp if timestamps are enabled, and they will go through the HMP monitor if one is configured. This commit also adds a call to error_init() to the binaries installed by QEMU. Since error_init() also calls error_set_progname(), this means that *-linux-user, *-bsd-user and qemu-pr-helper messages output with error_report, info_report, ... will slightly change: they will be prefixed by the binary name. glib debug messages are enabled through G_MESSAGES_DEBUG similarly to the glib default log handler. At the moment, this change will mostly impact SPICE logging if your spice version is >= 0.14.1. With older spice versions, this is not going to work as expected, but will not have any ill effect, so this call is not conditional on the SPICE version. Signed-off-by: Christophe Fergeau <cfergeau@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-Id: <20190131164614.19209-3-cfergeau@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2019-04-09include/qemu/bswap.h: Use __builtin_memcpy() in accessor functionsPeter Maydell1-10/+16
In the accessor functions ld*_he_p() and st*_he_p() we use memcpy() to perform a load or store to a pointer which might not be aligned for the size of the type. We rely on the compiler to optimize this memcpy() into an efficient load or store instruction where possible. This is required for good performance, but at the moment it is also required for correct operation, because some users of these functions require that the access is atomic if the pointer is aligned, which will only be the case if the compiler has optimized out the memcpy(). (The particular example where we discovered this is the virtio vring_avail_idx() which calls virtio_lduw_phys_cached() which eventually ends up calling lduw_he_p().) Unfortunately some compile environments, such as the fortify-source setup used in Alpine Linux, define memcpy() to a wrapper function in a way that inhibits this compiler optimization. The correct long-term fix here is to add a set of functions for doing atomic accesses into AddressSpaces (and to other relevant families of accessor functions like the virtio_*_phys_cached() ones), and make sure that callsites which want atomic behaviour use the correct functions. In the meantime, switch to using __builtin_memcpy() in the bswap.h accessor functions. This will make us robust against things like this fortify library in the short term. In the longer term it will mean that we don't end up with these functions being really badly-performing even if the semantics of the out-of-line memcpy() are correct. Reported-by: Fernando Casas Schössow <casasfernando@outlook.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20190318112938.8298-1-peter.maydell@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-04-02filemon: fix watch IDs to avoid potential wraparound issuesDaniel P. Berrangé1-8/+8
Watch IDs are allocated from incrementing a int counter against the QFileMonitor object. In very long life QEMU processes with a huge amount of USB MTP activity creating & deleting directories it is just about conceivable that the int counter can wrap around. This would result in incorrect behaviour of the file monitor watch APIs due to clashing watch IDs. Instead of trying to detect this situation, this patch changes the way watch IDs are allocated. It is turned into an int64_t variable where the high 32 bits are set from the underlying inotify "int" ID. This gives an ID that is guaranteed unique for the directory as a whole, and we can rely on the kernel to enforce this. QFileMonitor then sets the low 32 bits from a per-directory counter. The USB MTP device only sets watches on the directory as a whole, not files within, so there is no risk of guest triggered wrap around on the low 32 bits. Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2019-03-11hostmem-file: reject invalid pmem file sizesStefan Hajnoczi1-0/+13
Guests started with NVDIMMs larger than the underlying host file produce confusing errors inside the guest. This happens because the guest accesses pages beyond the end of the file. Check the pmem file size on startup and print a clear error message if the size is invalid. Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1669053 Cc: Wei Yang <richardw.yang@linux.intel.com> Cc: Zhang Yi <yi.z.zhang@linux.intel.com> Cc: Eduardo Habkost <ehabkost@redhat.com> Cc: Igor Mammedov <imammedo@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Message-Id: <20190214031004.32522-3-stefanha@redhat.com> Reviewed-by: Wei Yang <richardw.yang@linux.intel.com> Reviewed-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Pankaj Gupta <pagupta@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2019-03-07tests: qgraph API for the qtest driver frameworkEmanuele Giuseppe Esposito1-0/+2
Add qgraph API that allows to add/remove nodes and edges from the graph, implementation of Depth First Search to discover the paths and basic unit test to check correctness of the API. Included also a main executable that takes care of starting the framework, create the nodes, set the available drivers/machines, discover the path and run tests. graph.h provides the public API to manage the graph nodes/edges graph_extra.h provides a more private API used successively by the gtest integration part qos-test.c provides the main executable Signed-off-by: Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com> [Paolo's changes compared to the Google Summer of Code submission: * added subprocess to test options * refactored object creation to support live migration tests * removed driver .before callback (unused) * removed test .after callbacks (replaced by GTest destruction queue)] Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-06Merge remote-tracking branch ↵Peter Maydell1-0/+17
'remotes/dgilbert/tags/pull-migration-20190306a' into staging Migation pull 2019-03-06 (This replaces the pull sent yesterday) a) 4 small fixes including the cancel problem that caused the ahci migration test to fail intermittently b) Yury's ignore-shared feature c) Juan's extra tests d) Wei Wang's free page hinting e) Some Colo fixes from Zhang Chen Diff from yesterdays pull: 1) A missing fix of mine (cleanup during exit) 2) Changes from Eric/Markus on 'Create socket-address parameter' # gpg: Signature made Wed 06 Mar 2019 11:39:53 GMT # gpg: using RSA key 0516331EBC5BFDE7 # gpg: Good signature from "Dr. David Alan Gilbert (RH2) <dgilbert@redhat.com>" [full] # Primary key fingerprint: 45F5 C71B 4A0C B7FB 977A 9FA9 0516 331E BC5B FDE7 * remotes/dgilbert/tags/pull-migration-20190306a: (22 commits) qapi/migration.json: Remove a variable that doesn't exist in example Migration/colo.c: Make COLO node running after failover Migration/colo.c: Fix double close bug when occur COLO failover virtio-balloon: VIRTIO_BALLOON_F_FREE_PAGE_HINT migration/ram.c: add the free page optimization enable flag migration/ram.c: add a notifier chain for precopy migration: API to clear bits of guest free pages from the dirty bitmap migration: use bitmap_mutex in migration_bitmap_clear_dirty bitmap: bitmap_count_one_with_offset bitmap: fix bitmap_count_one tests: Add basic migration precopy tcp test migration: Create socket-address parameter tests: Add migration xbzrle test migration: Add capabilities validation tests/migration-test: Add a test for ignore-shared capability migration: Add an ability to ignore shared RAM blocks migration: Introduce ignore-shared capability exec: Change RAMBlockIterFunc definition migration/rdma: clang compilation fix migration: Cleanup during exit ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-03-06bitmap: bitmap_count_one_with_offsetWei Wang1-0/+13
Count the number of 1s in a bitmap starting from an offset. Signed-off-by: Wei Wang <wei.w.wang@intel.com> CC: Dr. David Alan Gilbert <dgilbert@redhat.com> CC: Juan Quintela <quintela@redhat.com> CC: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Message-Id: <1544516693-5395-3-git-send-email-wei.w.wang@intel.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2019-03-06bitmap: fix bitmap_count_oneWei Wang1-0/+4
BITMAP_LAST_WORD_MASK(nbits) returns 0xffffffff when "nbits=0", which makes bitmap_count_one fail to handle the "nbits=0" case. It appears to be preferred to remain BITMAP_LAST_WORD_MASK identical to the kernel implementation that it is ported from. So this patch fixes bitmap_count_one to handle the nbits=0 case. Inital Discussion Link: https://www.mail-archive.com/qemu-devel@nongnu.org/msg554316.html Signed-off-by: Wei Wang <wei.w.wang@intel.com> CC: Juan Quintela <quintela@redhat.com> CC: Dr. David Alan Gilbert <dgilbert@redhat.com> CC: Peter Xu <peterx@redhat.com> Message-Id: <1544516693-5395-2-git-send-email-wei.w.wang@intel.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2019-03-06bswap: Fix accessors syntax in commentGreg Kurz1-4/+4
All accessors that have an endian infix DO have an underscore between {size} and {endian}. Signed-off-by: Greg Kurz <groug@kaod.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <155119086741.1037569.12734854713022304642.stgit@bahia.lan> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-03-05net: Introduce announce timerDr. David Alan Gilbert1-0/+1
The 'announce timer' will be used by migration, and explicit requests for qemu to perform network announces. Based on the work by Germano Veit Michel <germano@redhat.com> and Vlad Yasevich <vyasevic@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2019-02-26authz: delete existing ACL implementationDaniel P. Berrange1-66/+0
The 'qemu_acl' type was a previous non-QOM based attempt to provide an authorization facility in QEMU. Because it is non-QOM based it cannot be created via the command line and requires special monitor commands to manipulate it. The new QAuthZ subclasses provide a superset of the functionality in qemu_acl, so the latter can now be deleted. The HMP 'acl_*' monitor commands are converted to use the new QAuthZSimple data type instead in order to provide temporary backwards compatibility. Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2019-02-26util: add helper APIs for dealing with inotify in portable mannerDaniel P. Berrangé1-0/+128
The inotify userspace API for reading events is quite horrible, so it is useful to wrap it in a more friendly API to avoid duplicating code across many users in QEMU. Wrapping it also allows introduction of a platform portability layer, so that we can add impls for non-Linux based equivalents in future. Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2019-02-22block: enhance QEMUIOVector structureVladimir Sementsov-Ogievskiy1-2/+62
Add a possibility of embedded iovec, for cases when we need only one local iov. Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 20190218140926.333779-2-vsementsov@virtuozzo.com Message-Id: <20190218140926.333779-2-vsementsov@virtuozzo.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2019-02-07slirp: replace global polling with per-instance & notifierMarc-André Lureau1-0/+15
Remove hard-coded dependency on slirp in main-loop, and use a "poll" notifier instead. The notifier is registered per slirp instance. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
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