RRichard Hendersonutil: fix build with musl libc on ppc64le
| 文件 | 最后提交记录 | 最后更新时间 |
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iothread: Remove unused Error** argument in aio_context_set_aio_params aio_context_set_aio_params() doesn't use its undocumented Error** argument. Remove it to simplify. Note this removes a use of "unchecked Error**" in iothread_set_aio_context_params(). Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Message-ID: <20231120171806.19361-1-philmd@linaro.org> | 2 年前 | |
aio: remove aio_disable_external() API All callers now pass is_external=false to aio_set_fd_handler() and aio_set_event_notifier(). The aio_disable_external() API that temporarily disables fd handlers that were registered is_external=true is therefore dead code. Remove aio_disable_external(), aio_enable_external(), and the is_external arguments to aio_set_fd_handler() and aio_set_event_notifier(). The entire test-fdmon-epoll test is removed because its sole purpose was testing aio_disable_external(). Parts of this patch were generated using the following coccinelle (https://coccinelle.lip6.fr/) semantic patch: @@ expression ctx, fd, is_external, io_read, io_write, io_poll, io_poll_ready, opaque; @@ - aio_set_fd_handler(ctx, fd, is_external, io_read, io_write, io_poll, io_poll_ready, opaque) + aio_set_fd_handler(ctx, fd, io_read, io_write, io_poll, io_poll_ready, opaque) @@ expression ctx, notifier, is_external, io_read, io_poll, io_poll_ready; @@ - aio_set_event_notifier(ctx, notifier, is_external, io_read, io_poll, io_poll_ready) + aio_set_event_notifier(ctx, notifier, io_read, io_poll, io_poll_ready) Reviewed-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Message-Id: <20230516190238.8401-21-stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> | 3 年前 | |
aio-wait: avoid AioContext lock in aio_wait_bh_oneshot() There is no need for the AioContext lock in aio_wait_bh_oneshot(). It's easy to remove the lock from existing callers and then switch from AIO_WAIT_WHILE() to AIO_WAIT_WHILE_UNLOCKED() in aio_wait_bh_oneshot(). Document that the AioContext lock should not be held across aio_wait_bh_oneshot(). Holding a lock across aio_poll() can cause deadlock so we don't want callers to do that. This is a step towards getting rid of the AioContext lock. Cc: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Message-Id: <20230404153307.458883-1-stefanha@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Emanuele Giuseppe Esposito <eesposit@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> | 3 年前 | |
iothread: Remove unused Error** argument in aio_context_set_aio_params aio_context_set_aio_params() doesn't use its undocumented Error** argument. Remove it to simplify. Note this removes a use of "unchecked Error**" in iothread_set_aio_context_params(). Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Message-ID: <20231120171806.19361-1-philmd@linaro.org> | 2 年前 | |
block: move AioContext, QEMUTimer, main-loop to libqemuutil AioContext is fairly self contained, the only dependency is QEMUTimer but that in turn doesn't need anything else. So move them out of block-obj-y to avoid introducing a dependency from io/ to block-obj-y. main-loop and its dependency iohandler also need to be moved, because later in this series io/ will call iohandler_get_aio_context. [Changed copyright "the QEMU team" to "other QEMU contributors" as suggested by Daniel Berrange and agreed by Paolo. --Stefan] Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Fam Zheng <famz@redhat.com> Message-id: 20170213135235.12274-2-pbonzini@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> | 9 年前 | |
system/cpus: rename qemu_mutex_lock_iothread() to bql_lock() The Big QEMU Lock (BQL) has many names and they are confusing. The actual QemuMutex variable is called qemu_global_mutex but it's commonly referred to as the BQL in discussions and some code comments. The locking APIs, however, are called qemu_mutex_lock_iothread() and qemu_mutex_unlock_iothread(). The "iothread" name is historic and comes from when the main thread was split into into KVM vcpu threads and the "iothread" (now called the main loop thread). I have contributed to the confusion myself by introducing a separate --object iothread, a separate concept unrelated to the BQL. The "iothread" name is no longer appropriate for the BQL. Rename the locking APIs to: - void bql_lock(void) - void bql_unlock(void) - bool bql_locked(void) There are more APIs with "iothread" in their names. Subsequent patches will rename them. There are also comments and documentation that will be updated in later patches. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Paul Durrant <paul@xen.org> Acked-by: Fabiano Rosas <farosas@suse.de> Acked-by: David Woodhouse <dwmw@amazon.co.uk> Reviewed-by: Cédric Le Goater <clg@kaod.org> Acked-by: Peter Xu <peterx@redhat.com> Acked-by: Eric Farman <farman@linux.ibm.com> Reviewed-by: Harsh Prateek Bora <harshpb@linux.ibm.com> Acked-by: Hyman Huang <yong.huang@smartx.com> Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com> Message-id: 20240102153529.486531-2-stefanha@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> | 2 年前 | |
osdep: Move memalign-related functions to their own header Move the various memalign-related functions out of osdep.h and into their own header, which we include only where they are used. While we're doing this, add some brief documentation comments. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-id: 20220226180723.1706285-10-peter.maydell@linaro.org | 4 年前 | |
nomaintainer: Fix Lesser GPL version number There is no "version 2" of the "Lesser" General Public License. It is either "GPL version 2.0" or "Lesser GPL version 2.1". This patch replaces all occurrences of "Lesser GPL version 2" with "Lesser GPL version 2.1" in comment section. This patch contains all the files, whose maintainer I could not get from ‘get_maintainer.pl’ script. Signed-off-by: Chetan Pant <chetan4windows@gmail.com> Message-Id: <20201023124424.20177-1-chetan4windows@gmail.com> Reviewed-by: Thomas Huth <thuth@redhat.com> [thuth: Adapted exec.c and qdev-monitor.c to new location] Signed-off-by: Thomas Huth <thuth@redhat.com> | 5 年前 | |
migration: Use non-atomic ops for clear log bitmap Since we already have bitmap_mutex to protect either the dirty bitmap or the clear log bitmap, we don't need atomic operations to set/clear/test on the clear log bitmap. Switching all ops from atomic to non-atomic versions, meanwhile touch up the comments to show which lock is in charge. Introduced non-atomic version of bitmap_test_and_clear_atomic(), mostly the same as the atomic version but simplified a few places, e.g. dropped the "old_bits" variable, and also the explicit memory barriers. Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Peter Xu <peterx@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com> | 3 年前 | |
replace TABs with spaces Bring the files in line with the QEMU coding style, with spaces for indentation. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/378 Signed-off-by: Yeqi Fu <fufuyqqqqqq@gmail.com> Message-Id: <20230315032649.57568-1-fufuyqqqqqq@gmail.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com> | 3 年前 | |
block: move logical block size check function to a common utility function 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> | 5 年前 | |
block: move logical block size check function to a common utility function 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> | 5 年前 | |
nomaintainer: Fix Lesser GPL version number There is no "version 2" of the "Lesser" General Public License. It is either "GPL version 2.0" or "Lesser GPL version 2.1". This patch replaces all occurrences of "Lesser GPL version 2" with "Lesser GPL version 2.1" in comment section. This patch contains all the files, whose maintainer I could not get from ‘get_maintainer.pl’ script. Signed-off-by: Chetan Pant <chetan4windows@gmail.com> Message-Id: <20201023124424.20177-1-chetan4windows@gmail.com> Reviewed-by: Thomas Huth <thuth@redhat.com> [thuth: Adapted exec.c and qdev-monitor.c to new location] Signed-off-by: Thomas Huth <thuth@redhat.com> | 5 年前 | |
util/bufferiszero: Use i386 host/cpuinfo.h Use cpuinfo_init() during init_accel(), and the variable cpuinfo during test_buffer_is_zero_next_accel(). Adjust the logic that cycles through the set of accelerators for testing. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> | 3 年前 | |
util/cacheflush: Avoid possible redundant dcache flush on Darwin <libkern/OSCacheControl.h> describes sys_icache_invalidate() as "equivalent to sys_cache_control(kCacheFunctionPrepareForExecution)", having kCacheFunctionPrepareForExecution defined as: /* Prepare memory for execution. This should be called * after writing machine instructions to memory, before * executing them. It syncs the dcache and icache. [...] */ Since the dcache is also sync'd, we can avoid the sys_dcache_flush() call when both rx/rw pointers are equal. Suggested-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com> Message-Id: <20230605195911.96033-1-philmd@linaro.org> | 3 年前 | |
util/char_dev: Add open_cdev() /dev/vfio/devices/vfioX may not exist. In that case it is still possible to open /dev/char/$major:$minor instead. Add helper function to abstract the cdev open. Suggested-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Yi Liu <yi.l.liu@intel.com> Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com> Reviewed-by: Cédric Le Goater <clg@redhat.com> Reviewed-by: Eric Auger <eric.auger@redhat.com> Tested-by: Eric Auger <eric.auger@redhat.com> Tested-by: Nicolin Chen <nicolinc@nvidia.com> Signed-off-by: Cédric Le Goater <clg@redhat.com> | 2 年前 | |
util: replace pipe()+cloexec with g_unix_open_pipe() Suggested-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> | 4 年前 | |
osdep: set _FORTIFY_SOURCE=2 when optimization is enabled Currently we set _FORTIFY_SOURCE=2 as a compiler argument when the meson 'optimization' setting is non-zero, the compiler is GCC and the target is Linux. While the default QEMU optimization level is 2, user could override this by setting CFLAGS="-O0" or --extra-cflags="-O0" when running configure and this won't be reflected in the meson 'optimization' setting. As a result we try to enable _FORTIFY_SOURCE=2 and then the user gets compile errors as it only works with optimization. Rather than trying to improve detection in meson, it is simpler to just check the __OPTIMIZE__ define from osdep.h. The comment about being incompatible with clang appears to be outdated, as compilation works fine without excluding clang. In the coroutine code we must set _FORTIFY_SOURCE=0 to stop the logic in osdep.h then enabling it. Signed-off-by: Daniel P. Berrangé <berrange@redhat.com> Message-id: 20231003091549.223020-1-berrange@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> | 2 年前 | |
osdep: set _FORTIFY_SOURCE=2 when optimization is enabled Currently we set _FORTIFY_SOURCE=2 as a compiler argument when the meson 'optimization' setting is non-zero, the compiler is GCC and the target is Linux. While the default QEMU optimization level is 2, user could override this by setting CFLAGS="-O0" or --extra-cflags="-O0" when running configure and this won't be reflected in the meson 'optimization' setting. As a result we try to enable _FORTIFY_SOURCE=2 and then the user gets compile errors as it only works with optimization. Rather than trying to improve detection in meson, it is simpler to just check the __OPTIMIZE__ define from osdep.h. The comment about being incompatible with clang appears to be outdated, as compilation works fine without excluding clang. In the coroutine code we must set _FORTIFY_SOURCE=0 to stop the logic in osdep.h then enabling it. Signed-off-by: Daniel P. Berrangé <berrange@redhat.com> Message-id: 20231003091549.223020-1-berrange@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> | 2 年前 | |
build: move coroutine backend selection to meson To simplify the code, rename coroutine-win32.c to match the option passed to configure. Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> | 3 年前 | |
Merge tag 'pull-tcg-20230915-2' of https://gitlab.com/rth7680/qemu into staging *: Delete checks for old host definitions tcg/loongarch64: Generate LSX instructions fpu: Add conversions between bfloat16 and [u]int8 fpu: Handle m68k extended precision denormals properly accel/tcg: Improve cputlb i/o organization accel/tcg: Simplify tlb_plugin_lookup accel/tcg: Remove false-negative halted assertion tcg: Add gvec compare with immediate and scalar operand tcg/aarch64: Emit BTI insns at jump landing pads [Resolved conflict between CPUINFO_PMULL and CPUINFO_BTI. --Stefan] * tag 'pull-tcg-20230915-2' of https://gitlab.com/rth7680/qemu: (39 commits) tcg: Map code_gen_buffer with PROT_BTI tcg/aarch64: Emit BTI insns at jump landing pads util/cpuinfo-aarch64: Add CPUINFO_BTI tcg: Add tcg_out_tb_start backend hook fpu: Handle m68k extended precision denormals properly fpu: Add conversions between bfloat16 and [u]int8 accel/tcg: Introduce do_st16_mmio_leN accel/tcg: Introduce do_ld16_mmio_beN accel/tcg: Merge io_writex into do_st_mmio_leN accel/tcg: Merge io_readx into do_ld_mmio_beN accel/tcg: Replace direct use of io_readx/io_writex in do_{ld,st}_1 accel/tcg: Merge cpu_transaction_failed into io_failed plugin: Simplify struct qemu_plugin_hwaddr accel/tcg: Use CPUTLBEntryFull.phys_addr in io_failed accel/tcg: Split out io_prepare and io_failed accel/tcg: Simplify tlb_plugin_lookup target/arm: Use tcg_gen_gvec_cmpi for compare vs 0 tcg: Add gvec compare with immediate and scalar operand tcg/loongarch64: Implement 128-bit load & store tcg/loongarch64: Lower rotli_vec to vrotri ... Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> | 2 年前 | |
host/include/i386: Implement clmul.h Detect PCLMUL in cpuinfo; implement the accel hook. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> | 2 年前 | |
util: Add cpuinfo for loongarch64 Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Jiajie Chen <c@jia.je> Message-Id: <20230916220151.526140-4-richard.henderson@linaro.org> | 2 年前 | |
util: fix build with musl libc on ppc64le Use PPC_FEATURE2_ISEL and PPC_FEATURE2_VEC_CRYPTO from linux headers instead of the GNU specific PPC_FEATURE2_HAS_ISEL and PPC_FEATURE2_HAS_VEC_CRYPTO. This fixes build with musl libc. Cc: qemu-stable@nongnu.org Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1861 Signed-off-by: Natanael Copa <ncopa@alpinelinux.org> Fixes: 63922f467a ("tcg/ppc: Replace HAVE_ISEL macro with a variable") Fixes: 68f340d4cd ("tcg/ppc: Enable Altivec detection") Message-Id: <20231219105236.7059-1-ncopa@alpinelinux.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> | 2 年前 | |
util: Add CRC16 (CCITT) calculation routines 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> | 5 年前 | |
igb: Implement Rx SCTP CSO Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com> Reviewed-by: Sriram Yagnaraman <sriram.yagnaraman@est.tech> Signed-off-by: Jason Wang <jasowang@redhat.com> | 3 年前 | |
cutils: Fix get_relocated_path on Windows get_relocated_path() did not have error handling for PathCchSkipRoot() because a path given to get_relocated_path() was expected to be a valid path containing a drive letter or UNC server/share path elements on Windows, but sometimes it turned out otherwise. The paths passed to get_relocated_path() are defined by macros generated by Meson. Meson in turn uses a prefix given by the configure script to generate them. For Windows, the script passes /qemu as a prefix to Meson by default. As documented in docs/about/build-platforms.rst, typically MSYS2 is used for the build system, but it is also possible to use Linux as well. When MSYS2 is used, its Bash variant recognizes /qemu as a MSYS2 path, and converts it to a Windows path, adding the MSYS2 prefix including a drive letter or UNC server/share path elements. Such a conversion does not happen on a shell on Linux however, and /qemu will be passed as is in the case. Implement a proper error handling of PathCchSkipRoot() in get_relocated_path() so that it can handle a path without a drive letter or UNC server/share path elements. Reported-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-ID: <20231005064726.6945-1-akihiko.odaki@daynix.com> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> | 2 年前 | |
util: add dbus helper unit Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> | 6 年前 | |
util/defer-call: move defer_call() to util/ The networking subsystem may wish to use defer_call(), so move the code to util/ where it can be reused. As a reminder of what defer_call() does: This API defers a function call within a defer_call_begin()/defer_call_end() section, allowing multiple calls to batch up. This is a performance optimization that is used in the block layer to submit several I/O requests at once instead of individually: defer_call_begin(); <-- start of section ... defer_call(my_func, my_obj); <-- deferred my_func(my_obj) call defer_call(my_func, my_obj); <-- another defer_call(my_func, my_obj); <-- another ... defer_call_end(); <-- end of section, my_func(my_obj) is called once Suggested-by: Ilya Maximets <i.maximets@ovn.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Message-ID: <20230913200045.1024233-3-stefanha@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> | 2 年前 | |
util/drm: make portable by avoiding struct dirent d_type Given this isn't perforance critical at all lets avoid the non-portable d_type and use fstat instead to check whenever the file is a chardev. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reported-by: David Carlier <devnexen@gmail.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 20200703145614.16684-10-peter.maydell@linaro.org Message-id: 20200701180302.14821-1-kraxel@redhat.com [PMM: fixed comment style; tweaked subject line] Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> | 5 年前 | |
replace TABs with spaces Bring the files in line with the QEMU coding style, with spaces for indentation. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/378 Signed-off-by: Yeqi Fu <fufuyqqqqqq@gmail.com> Message-Id: <20230315032649.57568-1-fufuyqqqqqq@gmail.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com> | 3 年前 | |
util/error: add G_GNUC_PRINTF for various functions Signed-off-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-Id: <20221219130205.687815-5-berrange@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> | 3 年前 | |
util/error: Fix use-after-free errors reported by Coverity Fix use-after-free errors in the code path that called error_handle(). A call to error_handle() will now either free the passed Error 'err' or assign it to '*errp' if '*errp' is currently NULL. This ensures that 'err' either has been freed or is assigned to '*errp' if this function returns. Adjust the two callers of this function to not assign the 'err' to '*errp' themselves, since this is now handled by error_handle(). Fixes: commit 3ffef1a55ca3 ("error: add global &error_warn destination") Signed-off-by: Stefan Berger <stefanb@linux.ibm.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-id: 20230406154347.4100700-1-stefanb@linux.ibm.com | 3 年前 | |
Replace qemu_pipe() with g_unix_open_pipe() GLib g_unix_open_pipe() is essentially like qemu_pipe(), available since 2.30. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> | 4 年前 | |
Remove qemu-common.h include from most units Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20220323155743.1585078-33-marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> | 4 年前 | |
aio: remove aio_disable_external() API All callers now pass is_external=false to aio_set_fd_handler() and aio_set_event_notifier(). The aio_disable_external() API that temporarily disables fd handlers that were registered is_external=true is therefore dead code. Remove aio_disable_external(), aio_enable_external(), and the is_external arguments to aio_set_fd_handler() and aio_set_event_notifier(). The entire test-fdmon-epoll test is removed because its sole purpose was testing aio_disable_external(). Parts of this patch were generated using the following coccinelle (https://coccinelle.lip6.fr/) semantic patch: @@ expression ctx, fd, is_external, io_read, io_write, io_poll, io_poll_ready, opaque; @@ - aio_set_fd_handler(ctx, fd, is_external, io_read, io_write, io_poll, io_poll_ready, opaque) + aio_set_fd_handler(ctx, fd, io_read, io_write, io_poll, io_poll_ready, opaque) @@ expression ctx, notifier, is_external, io_read, io_poll, io_poll_ready; @@ - aio_set_event_notifier(ctx, notifier, is_external, io_read, io_poll, io_poll_ready) + aio_set_event_notifier(ctx, notifier, io_read, io_poll, io_poll_ready) Reviewed-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Message-Id: <20230516190238.8401-21-stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> | 3 年前 | |
aio-posix: zero out io_uring sqe user_data liburing does not clear sqe->user_data. We must do it ourselves to avoid undefined behavior in process_cqe() when user_data is used. Note that fdmon-io_uring is currently disabled, so this is a latent bug that does not affect users. Let's merge this fix now to make it easier to enable fdmon-io_uring in the future (and I'm working on that). Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Message-ID: <20230426212639.82310-1-stefanha@redhat.com> | 2 年前 | |
aio: remove aio_disable_external() API All callers now pass is_external=false to aio_set_fd_handler() and aio_set_event_notifier(). The aio_disable_external() API that temporarily disables fd handlers that were registered is_external=true is therefore dead code. Remove aio_disable_external(), aio_enable_external(), and the is_external arguments to aio_set_fd_handler() and aio_set_event_notifier(). The entire test-fdmon-epoll test is removed because its sole purpose was testing aio_disable_external(). Parts of this patch were generated using the following coccinelle (https://coccinelle.lip6.fr/) semantic patch: @@ expression ctx, fd, is_external, io_read, io_write, io_poll, io_poll_ready, opaque; @@ - aio_set_fd_handler(ctx, fd, is_external, io_read, io_write, io_poll, io_poll_ready, opaque) + aio_set_fd_handler(ctx, fd, io_read, io_write, io_poll, io_poll_ready, opaque) @@ expression ctx, notifier, is_external, io_read, io_poll, io_poll_ready; @@ - aio_set_event_notifier(ctx, notifier, is_external, io_read, io_poll, io_poll_ready) + aio_set_event_notifier(ctx, notifier, io_read, io_poll, io_poll_ready) Reviewed-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Message-Id: <20230516190238.8401-21-stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> | 3 年前 | |
util/fifo8: Introduce fifo8_peek_buf() To be able to peek at FIFO content without popping it, introduce the fifo8_peek_buf() method by factoring common content from fifo8_pop_buf(). Reviewed-by: Francisco Iglesias <frasse.iglesias@gmail.com> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Tested-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20231109192814.95977-3-philmd@linaro.org> Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> | 2 年前 | |
util/filemonitor-inotify.c: spelling fix: kenel Fixes: 2e12dd405c66 "util/filemonitor-inotify: qemu_file_monitor_watch(): assert no overflow" Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru> | 2 年前 | |
nomaintainer: Fix Lesser GPL version number There is no "version 2" of the "Lesser" General Public License. It is either "GPL version 2.0" or "Lesser GPL version 2.1". This patch replaces all occurrences of "Lesser GPL version 2" with "Lesser GPL version 2.1" in comment section. This patch contains all the files, whose maintainer I could not get from ‘get_maintainer.pl’ script. Signed-off-by: Chetan Pant <chetan4windows@gmail.com> Message-Id: <20201023124424.20177-1-chetan4windows@gmail.com> Reviewed-by: Thomas Huth <thuth@redhat.com> [thuth: Adapted exec.c and qdev-monitor.c to new location] Signed-off-by: Thomas Huth <thuth@redhat.com> | 5 年前 | |
util/getauxval: Porting to FreeBSD getauxval feature From d7f9d40777d1ed7c9450b0be4f957da2993dfc72 Mon Sep 17 00:00:00 2001 From: David Carlier <devnexen@gmail.com> Date: Fri, 12 Jun 2020 09:39:17 +0100 Subject: [PATCH] util/getauxval: Porting to FreeBSD getauxval feature FreeBSD has a similar API for auxiliary vector. Signed-off-by: David Carlier <devnexen@gmail.com> Message-Id: <CA+XhMqxTU6PUSQBpbA9VrS1QZfqgrCAKUCtUF-x2aF=fCMTDOw@mail.gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> | 5 年前 | |
util/guest-random: Clean up global variable shadowing Fix: util/guest-random.c:90:45: error: declaration shadows a variable in the global scope [-Werror,-Wshadow] int qemu_guest_random_seed_main(const char *optarg, Error **errp) ^ /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/getopt.h:77:14: note: previous declaration is here extern char *optarg; /* getopt(3) external variables */ ^ Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-ID: <20231004120019.93101-13-philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Markus Armbruster <armbru@redhat.com> | 2 年前 | |
hbitmap: fix hbitmap_status() return value for first dirty bit case The last return statement should return true, as we already evaluated that start == next_dirty Also, fix hbitmap_status() description in header Cc: qemu-stable@nongnu.org Fixes: a6426475a75 ("block/dirty-bitmap: introduce bdrv_dirty_bitmap_status()") Signed-off-by: Andrey Zhadchenko <andrey.zhadchenko@virtuozzo.com> Message-Id: <20230202181523.423131-1-andrey.zhadchenko@virtuozzo.com> Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> | 3 年前 | |
include: move C/util-related declarations to cutils.h Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20220323155743.1585078-22-marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> | 4 年前 | |
host-utils: Implemented signed 256-by-128 division Based on already existing QEMU implementation created a signed 256 bit by 128 bit division needed to implement the vector divide extended signed quadword instruction from PowerISA 3.1 Signed-off-by: Lucas Mateus Castro (alqotel) <lucas.araujo@eldorado.org.br> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220525134954.85056-6-lucas.araujo@eldorado.org.br> Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com> | 4 年前 | |
net: Use id_generate() in the network subsystem, too We already got a global function called id_generate() to create unique IDs within QEMU. Let's use it in the network subsytem, too, instead of inventing our own ID scheme here. Signed-off-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20210215090225.1046239-1-thuth@redhat.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu> | 5 年前 | |
include/qemu/int128: Use Int128 structure for TCI We are about to allow passing Int128 to/from tcg helper functions, but libffi doesn't support __int128_t, so use the structure. In order for atomic128.h to continue working, we must provide a mechanism to frob between real __int128_t and the structure. Provide a new union, Int128Alias, for this. We cannot modify Int128 itself, as any changed alignment would also break libffi. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> | 3 年前 | |
util/interval-tree: Check root for null in interval_tree_iter_first Fix a crash in qemu-user when running cat /proc/self/maps in a chroot, where /proc isn't mounted. The problem was introduced by commit 3ce3dd8ca965 ("util/selfmap: Rewrite using qemu/interval-tree.h") where in open_self_maps_1() the function read_self_maps() is called and which returns NULL if it can't read the hosts /proc/self/maps file. Afterwards that NULL is fed into interval_tree_iter_first() which doesn't check if the root node is NULL. Fix it by adding a check if root is NULL and return NULL in that case. Signed-off-by: Helge Deller <deller@gmx.de> Fixes: 3ce3dd8ca965 ("util/selfmap: Rewrite using qemu/interval-tree.h") Message-Id: <ZNOsq6Z7t/eyIG/9@p100> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> | 2 年前 | |
util/iov: Avoid dynamic stack allocation Use autofree heap allocation instead of variable-length array on the stack. The codebase has very few VLAs, and if we can get rid of them all we can make the compiler error on new additions. This is a defensive measure against security bugs where an on-stack dynamic allocation isn't correctly size-checked (e.g. CVE-2021-3527). Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-ID: <20230824164706.2652277-1-peter.maydell@linaro.org> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Eric Blake <eblake@redhat.com> | 2 年前 | |
util: accept iova_tree_remove_parameter by value It's convenient to call iova_tree_remove from a map returned from iova_tree_find or iova_tree_find_iova. With the current code this is not possible, since we will free it, and then we will try to search for it again. Fix it making accepting the map by value, forcing a copy of the argument. Not applying a fixes tag, since there is no use like that at the moment. Signed-off-by: Eugenio Pérez <eperezma@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com> | 3 年前 | |
include: add qemu/keyval.h Do not require the whole option machinery to handle keyval, as it is used by QAPI alone, without the option API. And match the associated unit name. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Message-Id: <20220420132624.2439741-24-marcandre.lureau@redhat.com> | 4 年前 | |
qemu/atomic.h: rename atomic_ to qatomic_ clang's C11 atomic_fetch_*() functions only take a C11 atomic type pointer argument. QEMU uses direct types (int, etc) and this causes a compiler error when a QEMU code calls these functions in a source file that also included <stdatomic.h> via a system header file: $ CC=clang CXX=clang++ ./configure ... && make ../util/async.c:79:17: error: address argument to atomic operation must be a pointer to _Atomic type ('unsigned int *' invalid) Avoid using atomic_*() names in QEMU's atomic.h since that namespace is used by <stdatomic.h>. Prefix QEMU's APIs with 'q' so that atomic.h and <stdatomic.h> can co-exist. I checked /usr/include on my machine and searched GitHub for existing "qatomic_" users but there seem to be none. This patch was generated using: $ git grep -h -o '\<atomic\(64\)\?_[a-z0-9_]\+' include/qemu/atomic.h | \ sort -u >/tmp/changed_identifiers $ for identifier in $(</tmp/changed_identifiers); do sed -i "s%\<$identifier\>%q$identifier%g" \ $(git grep -I -l "\<$identifier\>") done I manually fixed line-wrap issues and misaligned rST tables. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <20200923105646.47864-1-stefanha@redhat.com> | 5 年前 | |
util/log: re-allow switching away from stderr log file Commit 59bde21374 ("util/log: do not close and reopen log files when flags are turned off") prevented switching away from stderr on a subsequent invocation of qemu_set_log_internal(). This prevented switching away from stderr with the 'logfile' monitor command as well as an invocation like > ./qemu-system-x86_64 -trace 'qemu_mutex_lock,file=log' from opening the specified log file. Fixes: 59bde21374 ("util/log: do not close and reopen log files when flags are turned off") Signed-off-by: Fiona Ebner <f.ebner@proxmox.com> Message-ID: <20231004124446.491481-1-f.ebner@proxmox.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> | 2 年前 | |
system/cpus: rename qemu_mutex_lock_iothread() to bql_lock() The Big QEMU Lock (BQL) has many names and they are confusing. The actual QemuMutex variable is called qemu_global_mutex but it's commonly referred to as the BQL in discussions and some code comments. The locking APIs, however, are called qemu_mutex_lock_iothread() and qemu_mutex_unlock_iothread(). The "iothread" name is historic and comes from when the main thread was split into into KVM vcpu threads and the "iothread" (now called the main loop thread). I have contributed to the confusion myself by introducing a separate --object iothread, a separate concept unrelated to the BQL. The "iothread" name is no longer appropriate for the BQL. Rename the locking APIs to: - void bql_lock(void) - void bql_unlock(void) - bool bql_locked(void) There are more APIs with "iothread" in their names. Subsequent patches will rename them. There are also comments and documentation that will be updated in later patches. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Paul Durrant <paul@xen.org> Acked-by: Fabiano Rosas <farosas@suse.de> Acked-by: David Woodhouse <dwmw@amazon.co.uk> Reviewed-by: Cédric Le Goater <clg@kaod.org> Acked-by: Peter Xu <peterx@redhat.com> Acked-by: Eric Farman <farman@linux.ibm.com> Reviewed-by: Harsh Prateek Bora <harshpb@linux.ibm.com> Acked-by: Hyman Huang <yong.huang@smartx.com> Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com> Message-id: 20240102153529.486531-2-stefanha@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> | 2 年前 | |
osdep: Move memalign-related functions to their own header Move the various memalign-related functions out of osdep.h and into their own header, which we include only where they are used. While we're doing this, add some brief documentation comments. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-id: 20220226180723.1706285-10-peter.maydell@linaro.org | 4 年前 | |
linux-user: add memfd_create 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> | 6 年前 | |
configure, meson: rename targetos to host_os This variable is about the host OS, not the target. It is used a lot more since the Meson conversion, but the original sin dates back to 2003. Time to fix it. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> | 2 年前 | |
util/mmap-alloc: qemu_fd_getfs() This new helper fetches file system type for a fd. Only Linux is implemented so far. Currently only tmpfs and hugetlbfs are defined, but it can grow as needed. Signed-off-by: Peter Xu <peterx@redhat.com> Reviewed-by: David Hildenbrand <david@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com> | 3 年前 | |
module: add Error arguments to module_load and module_load_qom improve error handling during module load, by changing: bool module_load(const char *prefix, const char *lib_name); void module_load_qom(const char *type); to: int module_load(const char *prefix, const char *name, Error **errp); int module_load_qom(const char *type, Error **errp); where the return value is: -1 on module load error, and errp is set with the error 0 on module or one of its dependencies are not installed 1 on module load success 2 on module load success (module already loaded or built-in) module_load_qom_one has been introduced in: commit 28457744c345 ("module: qom module support"), which built on top of module_load_one, but discarded the bool return value. Restore it. Adapt all callers to emit errors, or ignore them, or fail hard, as appropriate in each context. Replace the previous emission of errors via fprintf in _some_ error conditions with Error and error_report, so as to emit to the appropriate target. A memory leak is also fixed as part of the module_load changes. audio: when attempting to load an audio module, report module load errors. Note that still for some callers, a single issue may generate multiple error reports, and this could be improved further. Regarding the audio code itself, audio_add() seems to ignore errors, and this should probably be improved. block: when attempting to load a block module, report module load errors. For the code paths that already use the Error API, take advantage of those to report module load errors into the Error parameter. For the other code paths, we currently emit the error, but this could be improved further by adding Error parameters to all possible code paths. console: when attempting to load a display module, report module load errors. qdev: when creating a new qdev Device object (DeviceState), report load errors. If a module cannot be loaded to create that device, now abort execution (if no CONFIG_MODULE) or exit (if CONFIG_MODULE). qom/object.c: when initializing a QOM object, or looking up class_by_name, report module load errors. qtest: when processing the "module_load" qtest command, report errors in the load of the module. Signed-off-by: Claudio Fontana <cfontana@suse.de> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220929093035.4231-4-cfontana@suse.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> | 3 年前 | |
xen / notify: introduce a new XenWatchList abstraction 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> | 6 年前 | |
Clean up includes 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, with the changes to the following files manually reverted: contrib/libvhost-user/libvhost-user-glib.h contrib/libvhost-user/libvhost-user.c contrib/libvhost-user/libvhost-user.h contrib/plugins/hotblocks.c contrib/plugins/hotpages.c contrib/plugins/howvec.c contrib/plugins/lockstep.c linux-user/mips64/cpu_loop.c linux-user/mips64/signal.c linux-user/sparc64/cpu_loop.c linux-user/sparc64/signal.c linux-user/x86_64/cpu_loop.c linux-user/x86_64/signal.c target/s390x/gen-features.c tests/fp/platform.h tests/migration/s390x/a-b-bios.c tests/plugin/bb.c tests/plugin/empty.c tests/plugin/insn.c tests/plugin/mem.c tests/test-rcu-simpleq.c tests/test-rcu-slist.c tests/test-rcu-tailq.c tests/uefi-test-tools/UefiTestToolsPkg/BiosTablesTest/BiosTablesTest.c contrib/plugins/, tests/plugin/, and tests/test-rcu-slist.c appear not to include osdep.h intentionally. The remaining reverts are the same as in commit bbfff19688d. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20201113061216.2483385-1-armbru@redhat.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Tested-by: Thomas Huth <thuth@redhat.com> Acked-by: Cornelia Huck <cohuck@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Acked-by: Alexander Bulekov <alxndr@bu.edu> | 5 年前 | |
error handling: Use RETRY_ON_EINTR() macro where applicable There is a defined RETRY_ON_EINTR() macro in qemu/osdep.h which handles the same while loop. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/415 Signed-off-by: Nikita Ivanov <nivanov@cloudlinux.com> Message-Id: <20221023090422.242617-3-nivanov@cloudlinux.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> [thuth: Dropped the hunk that changed socket_accept() in libqtest.c] Signed-off-by: Thomas Huth <thuth@redhat.com> | 3 年前 | |
util/oslib: Have qemu_prealloc_mem() handler return a boolean Following the example documented since commit e3fe3988d7 ("error: Document Error API usage rules"), have qemu_prealloc_mem() return a boolean indicating whether an error is set or not. Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Peter Xu <peterx@redhat.com> Reviewed-by: Gavin Shan <gshan@redhat.com> Message-Id: <20231120213301.24349-19-philmd@linaro.org> | 2 年前 | |
util/oslib: Have qemu_prealloc_mem() handler return a boolean Following the example documented since commit e3fe3988d7 ("error: Document Error API usage rules"), have qemu_prealloc_mem() return a boolean indicating whether an error is set or not. Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Peter Xu <peterx@redhat.com> Reviewed-by: Gavin Shan <gshan@redhat.com> Message-Id: <20231120213301.24349-19-philmd@linaro.org> | 2 年前 | |
util/path: Do not cache all filenames at startup If one uses -L $PATH to point to a full chroot, the startup time is significant. In addition, the existing probing algorithm fails to handle symlink loops. Instead, probe individual paths on demand. Cache both positive and negative results within $PATH, so that any one filename is probed only once. Use glib filename functions for clarity. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Tested-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20190519201953.20161-2-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu> | 6 年前 | |
util: spelling fixes Signed-off-by: Michael Tokarev <mjt@tls.msk.ru> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-ID: <20230823065335.1919380-3-mjt@tls.msk.ru> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> | 2 年前 | |
co-shared-resource: protect with a mutex co-shared-resource is currently not thread-safe, as also reported in co-shared-resource.h. Add a QemuMutex because co_try_get_from_shres can also be invoked from non-coroutine context. Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com> Message-Id: <20210614081130.22134-6-eesposit@redhat.com> Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> | 5 年前 | |
util: add qemu-co-timeout 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> | 4 年前 | |
error: Drop superfluous #include "qapi/qmp/qerror.h" Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20230207075115.1525-2-armbru@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Konstantin Kostiuk <kkostiuk@redhat.com> | 3 年前 | |
aio: remove aio_disable_external() API All callers now pass is_external=false to aio_set_fd_handler() and aio_set_event_notifier(). The aio_disable_external() API that temporarily disables fd handlers that were registered is_external=true is therefore dead code. Remove aio_disable_external(), aio_enable_external(), and the is_external arguments to aio_set_fd_handler() and aio_set_event_notifier(). The entire test-fdmon-epoll test is removed because its sole purpose was testing aio_disable_external(). Parts of this patch were generated using the following coccinelle (https://coccinelle.lip6.fr/) semantic patch: @@ expression ctx, fd, is_external, io_read, io_write, io_poll, io_poll_ready, opaque; @@ - aio_set_fd_handler(ctx, fd, is_external, io_read, io_write, io_poll, io_poll_ready, opaque) + aio_set_fd_handler(ctx, fd, io_read, io_write, io_poll, io_poll_ready, opaque) @@ expression ctx, notifier, is_external, io_read, io_poll, io_poll_ready; @@ - aio_set_event_notifier(ctx, notifier, is_external, io_read, io_poll, io_poll_ready) + aio_set_event_notifier(ctx, notifier, io_read, io_poll, io_poll_ready) Reviewed-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Message-Id: <20230516190238.8401-21-stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> | 3 年前 | |
atomics: eliminate mb_read/mb_set qatomic_mb_read and qatomic_mb_set were the very first atomic primitives introduced for QEMU; their semantics are unclear and they provide a false sense of safety. The last use of qatomic_mb_read() has been removed, so delete it. qatomic_mb_set() instead can survive as an optimized qatomic_set()+smp_mb(), similar to Linux's smp_store_mb(), but rename it to qatomic_set_mb() to match the order of the two operations. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> | 3 年前 | |
coroutine: Clean up superfluous inclusion of qemu/coroutine.h Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-Id: <20221221131435.3851212-2-armbru@redhat.com> | 3 年前 | |
meson: do not use set10 Make all items of config-host.h consistent. To keep the --disable-coroutine-pool code visible to the compiler, mutuate the IS_ENABLED() macro from Linux. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> | 2 年前 | |
qemu-option: Allow deleting opts during qemu_opts_foreach() Use QTAILQ_FOREACH_SAFE() so that the current QemuOpts can be deleted while iterating through the whole list. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Message-Id: <20211008133442.141332-11-kwolf@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Tested-by: Peter Krempa <pkrempa@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> | 4 年前 | |
monitor: Use getter/setter functions for cur_mon cur_mon really needs to be coroutine-local as soon as we move monitor command handlers to coroutines and let them yield. As a first step, just remove all direct accesses to cur_mon so that we can implement this in the getter function later. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <20201005155855.256490-4-kwolf@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com> | 5 年前 | |
include: move progress API to qemu-progress.h Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20220323155743.1585078-25-marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> | 4 年前 | |
util: spelling fixes Signed-off-by: Michael Tokarev <mjt@tls.msk.ru> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-ID: <20230823065335.1919380-3-mjt@tls.msk.ru> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> | 2 年前 | |
Clean up includes 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, with the changes to the following files manually reverted: contrib/libvhost-user/libvhost-user-glib.h contrib/libvhost-user/libvhost-user.c contrib/libvhost-user/libvhost-user.h linux-user/mips64/cpu_loop.c linux-user/mips64/signal.c linux-user/sparc64/cpu_loop.c linux-user/sparc64/signal.c linux-user/x86_64/cpu_loop.c linux-user/x86_64/signal.c target/s390x/gen-features.c tests/migration/s390x/a-b-bios.c tests/test-rcu-simpleq.c tests/test-rcu-tailq.c Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20181204172535.2799-1-armbru@redhat.com> Acked-by: Eduardo Habkost <ehabkost@redhat.com> Acked-by: Halil Pasic <pasic@linux.ibm.com> Acked-by: Yuval Shaia <yuval.shaia@oracle.com> Acked-by: Viktor Prutyanov <viktor.prutyanov@phystech.edu> | 7 年前 | |
qemu-thread-posix: cleanup, fix, document QemuEvent QemuEvent is currently broken on ARM due to missing memory barriers after qatomic_*(). Apart from adding the memory barrier, a closer look reveals some unpaired memory barriers too. Document more clearly what is going on. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> | 3 年前 | |
qemu-thread-win32: cleanup, fix, document QemuEvent QemuEvent is currently broken on ARM due to missing memory barriers after qatomic_*(). Apart from adding the memory barrier, a closer look reveals some unpaired memory barriers that are not really needed and complicated the functions unnecessarily. Also, it is relying on a memory barrier in ResetEvent(); the barrier _ought_ to be there but there is really no documentation about it, so make it explicit. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> | 3 年前 | |
semihosting: Implement SYS_ELAPSED and SYS_TICKFREQ These are part of Semihosting for AArch32 and AArch64 Release 2.0 Signed-off-by: Keith Packard <keithp@keithp.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20210107170717.2098982-8-keithp@keithp.com> Message-Id: <20210108224256.2321-19-alex.bennee@linaro.org> | 5 年前 | |
qemu-timer: Skip empty timer lists before locking in qemu_clock_deadline_ns_all This decreases qemu_clock_deadline_ns_all's share from 23.2% to 13% in a profile of icount-enabled aarch64-softmmu. Signed-off-by: Idan Horowitz <idan.horowitz@gmail.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220114004358.299534-2-idan.horowitz@gmail.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> | 4 年前 | |
util/qht: use striped locks under TSAN Fixes this tsan crash, easy to reproduce with any large enough program: $ tests/unit/test-qht 1..2 ThreadSanitizer: CHECK failed: sanitizer_deadlock_detector.h:67 "((n_all_locks_)) < (((sizeof(all_locks_with_contexts_)/sizeof((all_locks_with_contexts_)[0]))))" (0x40, 0x40) (tid=1821568) #0 __tsan::CheckUnwind() ../../../../src/libsanitizer/tsan/tsan_rtl.cpp:353 (libtsan.so.2+0x90034) #1 __sanitizer::CheckFailed(char const*, int, char const*, unsigned long long, unsigned long long) ../../../../src/libsanitizer/sanitizer_common/sanitizer_termination.cpp:86 (libtsan.so.2+0xca555) #2 __sanitizer::DeadlockDetectorTLS<__sanitizer::TwoLevelBitVector<1ul, __sanitizer::BasicBitVector<unsigned long> > >::addLock(unsigned long, unsigned long, unsigned int) ../../../../src/libsanitizer/sanitizer_common/sanitizer_deadlock_detector.h:67 (libtsan.so.2+0xb3616) #3 __sanitizer::DeadlockDetectorTLS<__sanitizer::TwoLevelBitVector<1ul, __sanitizer::BasicBitVector<unsigned long> > >::addLock(unsigned long, unsigned long, unsigned int) ../../../../src/libsanitizer/sanitizer_common/sanitizer_deadlock_detector.h:59 (libtsan.so.2+0xb3616) #4 __sanitizer::DeadlockDetector<__sanitizer::TwoLevelBitVector<1ul, __sanitizer::BasicBitVector<unsigned long> > >::onLockAfter(__sanitizer::DeadlockDetectorTLS<__sanitizer::TwoLevelBitVector<1ul, __sanitizer::BasicBitVector<unsigned long> > >*, unsigned long, unsigned int) ../../../../src/libsanitizer/sanitizer_common/sanitizer_deadlock_detector.h:216 (libtsan.so.2+0xb3616) #5 __sanitizer::DD::MutexAfterLock(__sanitizer::DDCallback*, __sanitizer::DDMutex*, bool, bool) ../../../../src/libsanitizer/sanitizer_common/sanitizer_deadlock_detector1.cpp:169 (libtsan.so.2+0xb3616) #6 __tsan::MutexPostLock(__tsan::ThreadState*, unsigned long, unsigned long, unsigned int, int) ../../../../src/libsanitizer/tsan/tsan_rtl_mutex.cpp:200 (libtsan.so.2+0xa3382) #7 __tsan_mutex_post_lock ../../../../src/libsanitizer/tsan/tsan_interface_ann.cpp:384 (libtsan.so.2+0x76bc3) #8 qemu_spin_lock /home/cota/src/qemu/include/qemu/thread.h:259 (test-qht+0x44a97) #9 qht_map_lock_buckets ../util/qht.c:253 (test-qht+0x44a97) #10 do_qht_iter ../util/qht.c:809 (test-qht+0x45f33) #11 qht_iter ../util/qht.c:821 (test-qht+0x45f33) #12 iter_check ../tests/unit/test-qht.c:121 (test-qht+0xe473) #13 qht_do_test ../tests/unit/test-qht.c:202 (test-qht+0xe473) #14 qht_test ../tests/unit/test-qht.c:240 (test-qht+0xe7c1) #15 test_default ../tests/unit/test-qht.c:246 (test-qht+0xe828) #16 <null> <null> (libglib-2.0.so.0+0x7daed) #17 <null> <null> (libglib-2.0.so.0+0x7d80a) #18 <null> <null> (libglib-2.0.so.0+0x7d80a) #19 g_test_run_suite <null> (libglib-2.0.so.0+0x7dfe9) #20 g_test_run <null> (libglib-2.0.so.0+0x7e055) #21 main ../tests/unit/test-qht.c:259 (test-qht+0xd2c6) #22 __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58 (libc.so.6+0x29d8f) #23 __libc_start_main_impl ../csu/libc-start.c:392 (libc.so.6+0x29e3f) #24 _start <null> (test-qht+0xdb44) Signed-off-by: Emilio Cota <cota@braap.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20230111151628.320011-5-cota@braap.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20230124180127.1881110-30-alex.bennee@linaro.org> | 3 年前 | |
system/cpus: rename qemu_mutex_lock_iothread() to bql_lock() The Big QEMU Lock (BQL) has many names and they are confusing. The actual QemuMutex variable is called qemu_global_mutex but it's commonly referred to as the BQL in discussions and some code comments. The locking APIs, however, are called qemu_mutex_lock_iothread() and qemu_mutex_unlock_iothread(). The "iothread" name is historic and comes from when the main thread was split into into KVM vcpu threads and the "iothread" (now called the main loop thread). I have contributed to the confusion myself by introducing a separate --object iothread, a separate concept unrelated to the BQL. The "iothread" name is no longer appropriate for the BQL. Rename the locking APIs to: - void bql_lock(void) - void bql_unlock(void) - bool bql_locked(void) There are more APIs with "iothread" in their names. Subsequent patches will rename them. There are also comments and documentation that will be updated in later patches. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Paul Durrant <paul@xen.org> Acked-by: Fabiano Rosas <farosas@suse.de> Acked-by: David Woodhouse <dwmw@amazon.co.uk> Reviewed-by: Cédric Le Goater <clg@kaod.org> Acked-by: Peter Xu <peterx@redhat.com> Acked-by: Eric Farman <farman@linux.ibm.com> Reviewed-by: Harsh Prateek Bora <harshpb@linux.ibm.com> Acked-by: Hyman Huang <yong.huang@smartx.com> Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com> Message-id: 20240102153529.486531-2-stefanha@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> | 2 年前 | |
tcg: use QTree instead of GTree qemu-user can hang in a multi-threaded fork. One common reason is that when creating a TB, between fork and exec we manipulate a GTree whose memory allocator (GSlice) is not fork-safe. Although POSIX does not mandate it, the system's allocator (e.g. tcmalloc, libc malloc) is probably fork-safe. Fix some of these hangs by using QTree, which uses the system's allocator regardless of the Glib version that we used at configuration time. Tested with the test program in the original bug report, i.e.: void garble() { int pid = fork(); if (pid == 0) { exit(0); } else { int wstatus; waitpid(pid, &wstatus, 0); } } void supragarble(unsigned depth) { if (depth == 0) return ; std::thread a(supragarble, depth-1); std::thread b(supragarble, depth-1); garble(); a.join(); b.join(); } int main() { supragarble(10); } Resolves: https://gitlab.com/qemu-project/qemu/-/issues/285 Reported-by: Valentin David <me@valentindavid.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Emilio Cota <cota@braap.org> Message-Id: <20230205163758.416992-3-cota@braap.org> [rth: Add QEMU_DISABLE_CFI for all callback using functions.] Signed-off-by: Richard Henderson <richard.henderson@linaro.org> | 3 年前 | |
util/range.c: spelling fix: inbetween Fixes: b439595a08d7 "range: Introduce range_inverse_array()" Reviewed-by: Eric Auger <eric.auger@redhat.com> Reviewed-by: Cédric Le Goater <clg@redhat.com> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru> | 2 年前 | |
Replace "iothread lock" with "BQL" in comments The term "iothread lock" is obsolete. The APIs use Big QEMU Lock (BQL) in their names. Update the code comments to use "BQL" instead of "iothread lock". Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Paul Durrant <paul@xen.org> Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com> Reviewed-by: Cédric Le Goater <clg@kaod.org> Reviewed-by: Harsh Prateek Bora <harshpb@linux.ibm.com> Message-id: 20240102153529.486531-5-stefanha@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> | 2 年前 | |
readline: Extract readline_add_completion_of() from monitor monitor/misc.h has static add_completion_option(). It's useful elsewhere in the monitor. Since it's not monitor-specific, move it to util/readline.c renamed to readline_add_completion_of(), and put it to use. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20230124121946.1139465-7-armbru@redhat.com> | 3 年前 | |
util/reserved-region: Add new ReservedRegion helpers Introduce resv_region_list_insert() helper which inserts a new ReservedRegion into a sorted list of reserved region. In case of overlap, the new region has higher priority and hides the existing overlapped segments. If the overlap is partial, new regions are created for parts which are not overlapped. The new region has higher priority independently on the type of the regions. Signed-off-by: Eric Auger <eric.auger@redhat.com> Reviewed-by: Jean-Philippe Brucker <jean-philippe@linaro.org> Tested-by: Yanghang Liu <yanghliu@redhat.com> Signed-off-by: Cédric Le Goater <clg@redhat.com> | 2 年前 | |
util/selfmap: Use dev_t and ino_t in MapInfo Use dev_t instead of a string, and ino_t instead of uint64_t. The latter is likely to be identical on modern systems but is more type-correct for usage. Tested-by: Helge Deller <deller@gmx.de> Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> | 2 年前 | |
stat64: Add stat64_set() operation Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Juan Quintela <quintela@redhat.com> | 3 年前 | |
sys_membarrier: fix up include directives Our rule right now is to use <> for external headers only. util/sys_membarrier.c violates that. Fix it up. Signed-off-by: Bruce Rogers <brogers@suse.com> Message-Id: <20180329151018.15319-1-brogers@suse.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> | 8 年前 | |
systemd: Also clear LISTEN_FDNAMES during systemd socket activation Some time after systemd documented LISTEN_PID and LISTEN_FDS for socket activation, they later added LISTEN_FDNAMES; now documented at: https://www.freedesktop.org/software/systemd/man/sd_listen_fds.html In particular, look at the implementation of sd_listen_fds_with_names(): https://github.com/systemd/systemd/blob/main/src/libsystemd/sd-daemon/sd-daemon.c If we ever pass LISTEN_PID=xxx and LISTEN_FDS=n to a child process, but leave LISTEN_FDNAMES=... unchanged as inherited from our parent process, then our child process using sd_listen_fds_with_names() might see a mismatch in the number of names (unexpected -EINVAL failure), or even if the number of names matches the values of those names may be unexpected (with even less predictable results). Usually, this is not an issue - the point of LISTEN_PID is to tell systemd socket activation to ignore all other LISTEN_* if they were not directed to this particular pid. But if we end up consuming a socket directed to this qemu process, and later decide to spawn a child process that also needs systemd socket activation, we must ensure we are not leaking any stale systemd variables through to that child. The easiest way to do this is to wipe ALL LISTEN_* variables at the time we consume a socket, even if we do not yet care about a LISTEN_FDNAMES passed in from the parent process. See also https://lists.freedesktop.org/archives/systemd-devel/2023-March/048920.html Thanks: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <20230324153349.1123774-1-eblake@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> | 3 年前 | |
qapi: Use returned bool to check for failure (again) Commit 012d4c96e2 changed the visitor functions taking Error ** to return bool instead of void, and the commits following it used the new return value to simplify error checking. Since then a few more uses in need of the same treatment crept in. Do that. All pretty mechanical except for * balloon_stats_get_all() This is basically the same transformation commit 012d4c96e2 applied to the virtual walk example in include/qapi/visitor.h. * set_max_queue_size() Additionally replace "goto end of function" by return. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20221121085054.683122-10-armbru@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> | 3 年前 | |
virtio: use defer_call() in virtio_irqfd_notify() virtio-blk and virtio-scsi invoke virtio_irqfd_notify() to send Used Buffer Notifications from an IOThread. This involves an eventfd write(2) syscall. Calling this repeatedly when completing multiple I/O requests in a row is wasteful. Use the defer_call() API to batch together virtio_irqfd_notify() calls made during thread pool (aio=threads), Linux AIO (aio=native), and io_uring (aio=io_uring) completion processing. Behavior is unchanged for emulated devices that do not use defer_call_begin()/defer_call_end() since defer_call() immediately invokes the callback when called outside a defer_call_begin()/defer_call_end() region. fio rw=randread bs=4k iodepth=64 numjobs=8 IOPS increases by ~9% with a single IOThread and 8 vCPUs. iodepth=1 decreases by ~1% but this could be noise. Detailed performance data and configuration specifics are available here: https://gitlab.com/stefanha/virt-playbooks/-/tree/blk_io_plug-irqfd This duplicates the BH that virtio-blk uses for batching. The next commit will remove it. Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Message-ID: <20230913200045.1024233-4-stefanha@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> | 2 年前 | |
throttle: use THROTTLE_MAX/ARRAY_SIZE for hard code The first dimension of both to_check and bucket_types_size/bucket_types_units is used as throttle direction, use THROTTLE_MAX instead of hard coded number. Also use ARRAY_SIZE() to avoid hard coded number for the second dimension. Hanna noticed that the two array should be static. Yes, turn them into static variables. Reviewed-by: Hanna Czenczek <hreitz@redhat.com> Signed-off-by: zhenwei pi <pizhenwei@bytedance.com> Message-Id: <20230728022006.1098509-8-pizhenwei@bytedance.com> Signed-off-by: Hanna Czenczek <hreitz@redhat.com> | 2 年前 | |
Fix some typos found by codespell Signed-off-by: Stefan Weil <sw@weilnetz.de> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru> | 10 年前 | |
console/win32: allocate shareable display surface Introduce qemu_win32_map_alloc() and qemu_win32_map_free() to allocate shared memory mapping. The handle can be used to share the mapping with another process. Teach qemu_create_displaysurface() to allocate shared memory. Following patches will introduce other places for shared memory allocation. Other patches for -display dbus will share the memory when possible with the client, to avoid expensive memory copy between the processes. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20230606115658.677673-10-marcandre.lureau@redhat.com> | 3 年前 | |
trace: switch position of headers to what Meson requires Meson doesn't enjoy the same flexibility we have with Make in choosing the include path. In particular the tracing headers are using $(build_root)/$(<D). In order to keep the include directives unchanged, the simplest solution is to generate headers with patterns like "trace/trace-audio.h" and place forwarding headers in the source tree such that for example "audio/trace.h" includes "trace/trace-audio.h". This patch is too ugly to be applied to the Makefiles now. It's only a way to separate the changes to the tracing header files from the Meson rewrite of the tracing logic. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> | 5 年前 | |
transactions: Invoke clean() after everything else Invoke the transaction drivers' .clean() methods only after all .commit() or .abort() handlers are done. This makes it easier to have nested transactions where the top-level transactions pass objects to lower transactions that the latter can still use throughout their commit/abort phases, while the top-level transaction keeps a reference that is released in its .clean() method. (Before this commit, that is also possible, but the top-level transaction would need to take care to invoke tran_add() before the lower-level transaction does. This commit makes the ordering irrelevant, which is just a bit nicer.) Signed-off-by: Hanna Reitz <hreitz@redhat.com> Message-Id: <20211111120829.81329-8-hreitz@redhat.com> Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <20211115145409.176785-8-kwolf@redhat.com> Signed-off-by: Hanna Reitz <hreitz@redhat.com> | 4 年前 | |
json: Reject invalid UTF-8 sequences We reject bytes that can't occur in valid UTF-8 (\xC0..\xC1, \xF5..\xFF in the lexer. That's insufficient; there's plenty of invalid UTF-8 not containing these bytes, as demonstrated by check-qjson: * Malformed sequences - Unexpected continuation bytes - Missing continuation bytes after start bytes other than \xC0..\xC1, \xF5..\xFD. * Overlong sequences with start bytes other than \xC0..\xC1, \xF5..\xFD. * Invalid code points Fixing this in the lexer would be bothersome. Fixing it in the parser is straightforward, so do that. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20180823164025.12553-23-armbru@redhat.com> | 7 年前 | |
Updated the FSF address to <https://www.gnu.org/licenses/> The Free Software Foundation moved to a new address and some sources in QEMU referred to their old location. The address should be updated and replaced by a pointer to <https://www.gnu.org/licenses/> Resolves: https://gitlab.com/qemu-project/qemu/-/issues/379 Signed-off-by: Khadija Kamran <kkamran.bese16seecs@seecs.edu.pk> Message-Id: <576ee9203fdac99d7251a98faa66b9ce1e7febc5.1675941486.git.kkamran.bese16seecs@seecs.edu.pk> Reviewed-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Thomas Huth <thuth@redhat.com> | 3 年前 | |
util/userfaultfd: Support /dev/userfaultfd Teach QEMU to use /dev/userfaultfd when it existed and fallback to the system call if either it's not there or doesn't have enough permission. Firstly, as long as the app has permission to access /dev/userfaultfd, it always have the ability to trap kernel faults which QEMU mostly wants. Meanwhile, in some context (e.g. containers) the userfaultfd syscall can be forbidden, so it can be the major way to use postcopy in a restricted environment with strict seccomp setup. Signed-off-by: Peter Xu <peterx@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com> | 3 年前 | |
util/uuid: Add UUID_STR_LEN definition qemu_uuid_unparse() includes a trailing NUL when writing the uuid string and the buffer size should be UUID_FMT_LEN + 1 bytes. Add a define for this size and use it where required. Cc: Fam Zheng <fam@euphon.net> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Juan Quintela <quintela@redhat.com> Reviewed-by: "Denis V. Lunev" <den@openvz.org> Signed-off-by: Cédric Le Goater <clg@redhat.com> | 2 年前 | |
util/vfio-helpers: Use g_file_read_link() When _FORTIFY_SOURCE=2, glibc version is 2.35, and GCC version is 12.1.0, the compiler complains as follows: In file included from /usr/include/features.h:490, from /usr/include/bits/libc-header-start.h:33, from /usr/include/stdint.h:26, from /usr/lib/gcc/aarch64-unknown-linux-gnu/12.1.0/include/stdint.h:9, from /home/alarm/q/var/qemu/include/qemu/osdep.h:94, from ../util/vfio-helpers.c:13: In function 'readlink', inlined from 'sysfs_find_group_file' at ../util/vfio-helpers.c:116:9, inlined from 'qemu_vfio_init_pci' at ../util/vfio-helpers.c:326:18, inlined from 'qemu_vfio_open_pci' at ../util/vfio-helpers.c:517:9: /usr/include/bits/unistd.h:119:10: error: argument 2 is null but the corresponding size argument 3 value is 4095 [-Werror=nonnull] 119 | return __glibc_fortify (readlink, __len, sizeof (char), | ^~~~~~~~~~~~~~~ This error implies the allocated buffer can be NULL. Use g_file_read_link(), which allocates buffer automatically to avoid the error. Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Cédric Le Goater <clg@redhat.com> Signed-off-by: Cédric Le Goater <clg@redhat.com> | 3 年前 | |
block: remove AioContext locking This is the big patch that removes aio_context_acquire()/aio_context_release() from the block layer and affected block layer users. There isn't a clean way to split this patch and the reviewers are likely the same group of people, so I decided to do it in one patch. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Paul Durrant <paul@xen.org> Message-ID: <20231205182011.1976568-7-stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> | 2 年前 | |
yank: Remove dependency on qiochannel Remove dependency on qiochannel by removing yank_generic_iochannel and letting migration and chardev use their own yank function for iochannel. Signed-off-by: Lukas Straub <lukasstraub2@web.de> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20ff143fc2db23e27cd41d38043e481376c9cec1.1616521341.git.lukasstraub2@web.de> | 5 年前 |