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2016-10-26tcg: Add EXCP_ATOMICRichard Henderson
When we cannot emulate an atomic operation within a parallel context, this exception allows us to stop the world and try again in a serial context. Reviewed-by: Emilio G. Cota <cota@braap.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2016-10-24cpu: Support a target CPU having a variable page sizePeter Maydell
Support target CPUs having a page size which isn't knownn at compile time. To use this, the CPU implementation should: * define TARGET_PAGE_BITS_VARY * not define TARGET_PAGE_BITS * define TARGET_PAGE_BITS_MIN to the smallest value it might possibly want for TARGET_PAGE_BITS * call set_preferred_target_page_bits() in its realize function to indicate the actual preferred target page size for the CPU (and report any error from it) In CONFIG_USER_ONLY, the CPU implementation should continue to define TARGET_PAGE_BITS appropriately for the guest OS page size. Machines which want to take advantage of having the page size something larger than TARGET_PAGE_BITS_MIN must set the MachineClass minimum_page_bits field to a value which they guarantee will be no greater than the preferred page size for any CPU they create. Note that changing the target page size by setting minimum_page_bits is a migration compatibility break for that machine. For debugging purposes, attempts to use TARGET_PAGE_SIZE before it has been finally confirmed will assert. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <rth@twiddle.net>
2016-08-11Update ancient copyright string in -version outputPeter Maydell
Currently the -version command line argument prints a string ending with "Copyright (c) 2003-2008 Fabrice Bellard". This is now some eight years out of date; abstract it out of the several places that print the string and update it to: Copyright (c) 2003-2016 Fabrice Bellard and the QEMU Project developers to reflect the work by all the QEMU Project contributors over the last decade. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Acked-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 1470309276-5012-1-git-send-email-peter.maydell@linaro.org
2016-06-07qemu-common.h: Drop WORDS_ALIGNED definePeter Maydell
The WORDS_ALIGNED #define is not used anywhere, and hasn't been since 2013 when commit 612d590ebc6cef rewrote the various ld<type>_<endian>_p functions to not use it. Remove the #define and the comment describing it. Also remove the line in the comment about TARGET_WORDS_ALIGNED, since it has never actually existed. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2016-05-19qemu-common: push cpu.h inclusion out of qemu-common.hPaolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-05-19qemu-common: stop including qemu/host-utils.h from qemu-common.hPaolo Bonzini
Move it to the actual users. There are some inclusions of qemu/host-utils.h in headers, but they are all necessary. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-05-19qemu-common: stop including qemu/bswap.h from qemu-common.hPaolo Bonzini
Move it to the actual users. There are still a few includes of qemu/bswap.h in headers; removing them is left for future work. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-05-19include: move CPU-related definitions out of qemu-common.hPaolo Bonzini
Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22util: move declarations out of qemu-common.hVeronia Bahaa
Move declarations out of qemu-common.h for functions declared in utils/ files: e.g. include/qemu/path.h for utils/path.c. Move inline functions out of qemu-common.h and into new files (e.g. include/qemu/bcd.h) Signed-off-by: Veronia Bahaa <veroniabahaa@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22isa: Move DMA_transfer_handler from qemu-common.h to hw/isa/isa.hMarkus Armbruster
DMA_transfer_handler is actually an ISA thing, and as such has no business in qemu-common.h. Move it to hw/isa/isa.h, and rename it to IsaDmaTransferHandler. Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22Move ParallelIOArg from qemu-common.h to sysemu/char.hMarkus Armbruster
ParallelIOArg is shared between just qemu-char.c and hw/char/parallel.c, and as such has no business in qemu-common.h. Move it to sysemu/char.h. Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22Move QEMU_ALIGN_*() from qemu-common.h to qemu/osdep.hMarkus Armbruster
qemu-common.h should only be included by .c files. Its file comment explains why: "No header file should depend on qemu-common.h, as this would easily lead to circular header dependencies." One of the reasons for headers to include it is QEMU_ALIGN_UP() and QEMU_ALIGN_DOWN(). Move them next to ROUND_UP() in qemu/osdep.h, to facilitate removing these ill-advised includes later on. Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22Move HOST_LONG_BITS from qemu-common.h to qemu/osdep.hMarkus Armbruster
qemu-common.h should only be included by .c files. Its file comment explains why: "No header file should depend on qemu-common.h, as this would easily lead to circular header dependencies." One of the reasons for headers to include it is HOST_LONG_BITS. Move that to its more natural home qemu/osdep.h, to facilitate removing these ill-advised includes later on. This also lets us use HOST_LONG_BITS in bswap.h instead of duplicating its definition there to avoid cyclic inclusion. Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22hw/pci/pci.h: Don't include qemu-common.hMarkus Armbruster
qemu-common.h should only be included by .c files. Its file comment explains why: "No header file should depend on qemu-common.h, as this would easily lead to circular header dependencies." hw/pci/pci.h includes qemu-common.h, but its users only need pcibus_t and PCIHostDeviceAddress from it. Move them to hw/pci/pci.h and drop the ill-advised include. Include hw/pci/pci.h where the moved stuff is now missing. Except we can't in target-i386/kvm_i386.h, because that would break the i386-linux-user compile. Add PCIHostDeviceAddress to qemu/typedefs.h instead. Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22include/hw/hw.h: Don't include qemu-common.hMarkus Armbruster
qemu-common.h should only be included by .c files. Its file comment explains why: "No header file should depend on qemu-common.h, as this would easily lead to circular header dependencies." hw/hw.h includes qemu-common.h, but its users generally need only hw_error() and qemu/module.h from it. Move the former to hw/hw.h, include the latter there, and drop the ill-advised include. hw/misc/cbus.c now misses hw_error(), so include hw/hw.h there. Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22include/qemu/iov.h: Don't include qemu-common.hMarkus Armbruster
qemu-common.h should only be included by .c files. Its file comment explains why: "No header file should depend on qemu-common.h, as this would easily lead to circular header dependencies." qemu/iov.h includes qemu-common.h for QEMUIOVector stuff. Move all that to qemu/iov.h and drop the ill-advised include. Include qemu/iov.h where the QEMUIOVector stuff is now missing. Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22Use scripts/clean-includes to drop redundant qemu/typedefs.hMarkus Armbruster
Re-run scripts/clean-includes to apply the previous commit's corrections and updates. Besides redundant qemu/typedefs.h, this only finds a redundant config-host.h include in ui/egl-helpers.c. No idea how that escaped the previous runs. Some manual whitespace trimming around dropped includes squashed in. Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-08cutils: add avx2 instruction optimizationLiang Li
buffer_find_nonzero_offset() is a hot function during live migration. Now it use SSE2 instructions for optimization. For platform supports AVX2 instructions, use AVX2 instructions for optimization can help to improve the performance of buffer_find_nonzero_offset() about 30% comparing to SSE2. Live migration can be faster with this optimization, the test result shows that for an 8GiB RAM idle guest just boots, this patch can help to shorten the total live migration time about 6%. This patch use the ifunc mechanism to select the proper function when running, for platform supports AVX2, execute the AVX2 instructions, else, execute the original instructions. Signed-off-by: Liang Li <liang.z.li@intel.com> Suggested-by: Paolo Bonzini <pbonzini@redhat.com> Suggested-by: Richard Henderson <rth@twiddle.net> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <1457416397-26671-3-git-send-email-liang.z.li@intel.com> Signed-off-by: Amit Shah <amit.shah@redhat.com>
2016-02-25Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into stagingPeter Maydell
* Asynchronous dump-guest-memory from Peter * improved logging with -D -daemonize from Dimitris * more address_space_* optimization from Gonglei * TCG xsave/xrstor thinko fix * chardev bugfix and documentation patch # gpg: Signature made Thu 25 Feb 2016 15:12:27 GMT using RSA key ID 78C7AE83 # gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" # gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" * remotes/bonzini/tags/for-upstream: target-i386: fix confusion in xcr0 bit position vs. mask chardev: Properly initialize ChardevCommon components memory: Remove unreachable return statement memory: optimize qemu_get_ram_ptr and qemu_ram_ptr_length exec: store RAMBlock pointer into memory region log: Redirect stderr to logfile if deamonized dump-guest-memory: add qmp event DUMP_COMPLETED Dump: add hmp command "info dump" Dump: add qmp command "query-dump" DumpState: adding total_size and written_size fields dump-guest-memory: add "detach" support dump-guest-memory: disable dump when in INMIGRATE state dump-guest-memory: introduce dump_process() helper function. dump-guest-memory: add dump_in_progress() helper function dump-guest-memory: using static DumpState, add DumpStatus dump-guest-memory: add "detach" flag for QMP/HMP interfaces. dump-guest-memory: cleanup: removing dump_{error|cleanup}(). scripts/kvm/kvm_stat: Fix missing right parantheses and ".format(...)" qemu-options.hx: Improve documentation of chardev multiplexing mode Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-02-23include: Clean up includesPeter Maydell
Clean up includes so that osdep.h is included first and headers which it implies are not included manually. This commit was created with scripts/clean-includes. NB: If this commit breaks compilation for your out-of-tree patchseries or fork, then you need to make sure you add #include "qemu/osdep.h" to any new .c files that you have. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Eric Blake <eblake@redhat.com>
2016-02-22dump-guest-memory: add dump_in_progress() helper functionPeter Xu
For now, it has no effect. It will be used in dump detach support. Signed-off-by: Peter Xu <peterx@redhat.com> Reviewed-by: Fam Zheng <famz@redhat.com> Message-Id: <1455772616-8668-5-git-send-email-peterx@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-02-11cpu: cpu_save/cpu_load is no morePaolo Bonzini
Everything has been converted to vmstate. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2016-01-11osdep.h: Include glib-compat.h in osdep.h rather than qemu-common.hPeter Maydell
Our use of glib is now pervasive across QEMU. Move the include of glib-compat.h from qemu-common.h to osdep.h so that it is more widely accessible and doesn't get forgotten by accident. (Failure to include it will result in build failure on old versions of glib which is likely to be unnoticed by most developers.) Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2015-11-10Move page_size_init earlierDr. David Alan Gilbert
The HOST_PAGE_ALIGN macros don't work until the page size variables have been set up; later in postcopy I use those macros in the RAM code, and it can be triggered using -object. Fix this by initialising page_size_init() earlier - it's currently initialised inside the accelerators, move it up into vl.c. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2015-10-16util - add automated ID generation utilityJeff Cody
Multiple sub-systems in QEMU may find it useful to generate IDs for objects that a user may reference via QMP or HMP. This patch presents a standardized way to do it, so that automatic ID generation follows the same rules. This patch enforces the following rules when generating an ID: 1.) Guarantee no collisions with a user-specified ID 2.) Identify the sub-system the ID belongs to 3.) Guarantee of uniqueness 4.) Spoiling predictability, to avoid creating an assumption of object ordering and parsing (i.e., we don't want users to think they can guess the next ID based on prior behavior). The scheme for this is as follows (no spaces): # subsys D RR Reserved char --| | | | Subsystem String ----| | | Unique number (64-bit) --| | Two-digit random number ---| For example, a generated node-name for the block sub-system may look like this: #block076 The caller of id_generate() is responsible for freeing the generated node name string with g_free(). Reviewed-by: John Snow <jsnow@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Signed-off-by: Jeff Cody <jcody@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2015-09-25utils: rename strtosz to use qemu prefixMarc-André Lureau
Not only it makes sense, but it gets rid of checkpatch warning: WARNING: consider using qemu_strtosz in preference to strtosz Also remove get rid of tabs to please checkpatch. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <1442419377-9309-1-git-send-email-marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-09-14Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into stagingPeter Maydell
* Support for jemalloc * qemu_mutex_lock_iothread "No such process" fix * cutils: qemu_strto* wrappers * iohandler.c simplification * Many other fixes and misc patches. And some MTTCG work (with Emilio's fixes squashed): * Signal-free TCG kick * Removing spinlock in favor of QemuMutex * User-mode emulation multi-threading fixes/docs # gpg: Signature made Thu 10 Sep 2015 09:03:07 BST using RSA key ID 78C7AE83 # gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" # gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" * remotes/bonzini/tags/for-upstream: (44 commits) cutils: work around platform differences in strto{l,ul,ll,ull} cpu-exec: fix lock hierarchy for user-mode emulation exec: make mmap_lock/mmap_unlock globally available tcg: comment on which functions have to be called with mmap_lock held tcg: add memory barriers in page_find_alloc accesses remove unused spinlock. replace spinlock by QemuMutex. cpus: remove tcg_halt_cond and tcg_cpu_thread globals cpus: protect work list with work_mutex scripts/dump-guest-memory.py: fix after RAMBlock change configure: Add support for jemalloc add macro file for coccinelle configure: factor out adding disas configure vhost-scsi: fix wrong vhost-scsi firmware path checkpatch: remove tests that are not relevant outside the kernel checkpatch: adapt some tests to QEMU CODING_STYLE: update mixed declaration rules qmp: Add example usage of strto*l() qemu wrapper cutils: Add qemu_strtoull() wrapper cutils: Add qemu_strtoll() wrapper ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-09-09cutils: Add qemu_strtoull() wrapperCarlos L. Torres
Add wrapper for strtoull() function. Include unit tests. Signed-off-by: Carlos L. Torres <carlos.torres@rackspace.com> Message-Id: <e0f0f611c9a81f3c29f451d0b17d755dfab1e90a.1437346779.git.carlos.torres@rackspace.com> [Use uint64_t in prototype. - Paolo] Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-09-09cutils: Add qemu_strtoll() wrapperCarlos L. Torres
Add wrapper for strtoll() function. Include unit tests. Signed-off-by: Carlos L. Torres <carlos.torres@rackspace.com> Message-Id: <7454a6bb9ec03b629e8beb4f109dd30dc2c9804c.1437346779.git.carlos.torres@rackspace.com> [Use int64_t in prototype, since that's what QEMU uses. - Paolo] Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-09-09cutils: Add qemu_strtoul() wrapperCarlos L. Torres
Add wrapper for strtoul() function. Include unit tests. Signed-off-by: Carlos L. Torres <carlos.torres@rackspace.com> Message-Id: <9621b4ae8e35fded31c715c2ae2a98f904f07ad0.1437346779.git.carlos.torres@rackspace.com> [Fix tests for 32-bit build. - Paolo] Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-09-09cutils: Add qemu_strtol() wrapperCarlos L. Torres
Add wrapper for strtol() function. Include unit tests. Signed-off-by: Carlos L. Torres <carlos.torres@rackspace.com> Message-Id: <07199f1c0ff3892790c6322123aee1e92f580550.1437346779.git.carlos.torres@rackspace.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-09-07Make pow2ceil() and pow2floor() inlinePeter Maydell
Since the pow2floor() function is now used in a hot code path, make it inline; for consistency, provide pow2ceil() as an inline function too. Because these functions use ctz64() we have to put the inline versions into host-utils.h, so they have access to ctz64(), and move the inline is_power_of_2() along with them. We then need to include host-utils.h from qemu-common.h so that the files which use these functions via qemu-common.h still have access to them. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1437741192-20955-7-git-send-email-peter.maydell@linaro.org
2015-09-07Remove unused qemu_fls functionPeter Maydell
Nothing uses qemu_fls() any more, so delete it. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1437741192-20955-6-git-send-email-peter.maydell@linaro.org
2015-08-19qemu-common.h: Move muldiv64() to host-utils.hPeter Maydell
Move the muldiv64() function from qemu-common.h to host-utils.h. This puts it together with all the other arithmetic functions where we provide a version with __int128_t and a fallback without, and allows headers which need muldiv64() to avoid including qemu-common.h. We don't include host-utils from qemu-common.h, to avoid dragging more things into qemu-common.h than it already has; in practice everywhere that needs muldiv64() can get it via qemu/timer.h. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
2015-08-19osdep.h: Move some OS header includes and fixups from qemu-common.hPeter Maydell
qemu-common.h has some system header includes and fixups for things that might be missing. This is really an OS dependency and belongs in osdep.h, so move it across. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
2015-08-19qemu-common.h: Move Win32 fixups into os-win32.hPeter Maydell
qemu-common.h includes some fixups for things the Win32 headers don't define or define weirdly. These really belong in os-win32.h, so move them there. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
2015-07-27qemu-common.h: Document cutils.c string functionsPeter Maydell
Add documentation comments for various utility string functions which we have implemented in util/cutils.c: pstrcpy() strpadcpy() pstrcat() strstart() stristart() qemu_strnlen() qemu_strsep() Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2015-07-06Stop including qemu-common.h in memory.hPeter Maydell
Including qemu-common.h from other header files is generally a bad idea, because it means it's very easy to end up with a circular dependency. For instance, if we wanted to include memory.h from qom/cpu.h we'd end up with this loop: memory.h -> qemu-common.h -> cpu.h -> cpu-qom.h -> qom/cpu.h -> memory.h Remove the include from memory.h. This requires us to fix up a few other files which were inadvertently getting declarations indirectly through memory.h. The biggest change is splitting the fprintf_function typedef out into its own header so other headers can get at it without having to include qemu-common.h. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-Id: <1435933104-15216-1-git-send-email-peter.maydell@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-06-26qemu-common: add VEC_OR macroArtyom Tarasenko
Intel C Compiler version 15.0.3.187 Build 20150407 doesn't support '|' function for non floating-point simd operands. Define VEC_OR macro which uses _mm_or_si128 supported both in icc and gcc on x86 platform. Signed-off-by: Artyom Tarasenko <atar4qemu@gmail.com> Message-Id: <54c804cdb3b3a93e93ef98f085dc57c4092580b7.1435062067.git.atar4qemu@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-06-03machine: add default_ram_size to machine classNikunj A Dadhania
Machines types can have different requirement for default ram size. Introduce a member in the machine class and set the current default_ram_size to 128MB. For QEMUMachine types override the value during the registration of the machine and for MachineClass introduce the generic class init setting the default_ram_size. Add helpers [K,M,G,T,P,E]_BYTE for better readability and easy usage Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Alexander Graf <agraf@suse.de>
2015-04-30util: Remove unused functionsThomas Huth
Delete the unused functions qemu_signalfd_available(), qemu_send_full() and qemu_recv_full(). Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2015-03-03qxl: refactor rounding up to a nearest power of 2Radim Krčmář
We already have pow2floor, mirror it and use instead of a function with similar results (same in used domain), to clarify our intent. Signed-off-by: Radim Krčmář <rkrcmar@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2015-01-14qemu-common.h: optimise muldiv64 if int128 is availableFrediano Ziglio
Let compiler do the job to optimise the function. Signed-off-by: Frediano Ziglio <frediano.ziglio@huawei.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Frediano Ziglio <freddy77@gmail.com>
2014-11-02pidfile: stop making pidfile error a special caseMichael Tokarev
In case of -daemonize, we write non-zero to the daemon pipe only if pidfile creation failed, so the parent will report error about pidfile problem. There's no need to make special case for this, since all other errors are reported by the child just fine. Let the parent report error and simplify logic in os_daemonize(). This way, we don't need os_pidfile_error() function, since it only prints error now, so put the error reporting printf into the only place where qemu_create_pidfile() is called, in vl.c. While at it, fix wrong indentation in os_daemonize(). Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2014-10-03util: Emancipate id_wellformed() from QemuOptsMarkus Armbruster
IDs have long spread beyond QemuOpts: not everything with an ID necessarily goes through QemuOpts. Commit 9aebf3b is about such a case: block layer names are meant to be well-formed IDs, but some of them don't go through QemuOpts, and thus weren't checked. The commit fixed that the straightforward way: rename the internal QemuOpts helper id_wellformed() to qemu_opts_id_wellformed() and give it external linkage. Instead of using it directly in block.c, the commit adds wrapper bdrv_is_valid_name(), probably to hide the connection to QemuOpts. Go one logical step further: emancipate IDs from QemuOpts. Rename the function back to id_wellformed(), and put it in another file. While there, clean up its value to bool. Peel off the bdrv_is_valid_name() wrapper. [Replaced stray return 0 with return false to match bool returns used elsewhere in id_wellformed(). --Stefan] Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-09-11cpu: init vmstate for ticks and clock offsetPavel Dovgalyuk
Ticks and clock offset used by CPU timers have to be saved in vmstate. But vmstate for these fields registered only in icount mode. Missing registration leads to breaking the continuity when vmstate is loaded. This patch introduces new initialization function which fixes this. Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-08-07monitor: Add drift info to 'info jit'Sebastian Tanase
Show in 'info jit' the current delay between the host clock and the guest clock. In addition, print the maximum advance and delay of the guest compared to the host. Signed-off-by: Sebastian Tanase <sebastian.tanase@openwide.fr> Tested-by: Camille Bégué <camille.begue@openwide.fr> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-08-06icount: Add align option to icountSebastian Tanase
The align option is used for activating the align algorithm in order to synchronise the host clock and the guest clock. Signed-off-by: Sebastian Tanase <sebastian.tanase@openwide.fr> Tested-by: Camille Bégué <camille.begue@openwide.fr> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-08-06icount: Add QemuOpts for icountSebastian Tanase
Make icount parameter use QemuOpts style options in order to easily add other suboptions. Signed-off-by: Sebastian Tanase <sebastian.tanase@openwide.fr> Tested-by: Camille Bégué <camille.begue@openwide.fr> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-07-14dma-helpers: Fix too long qiovKevin Wolf
If the size of the scatter/gather list isn't a multiple of 512, the number of sectors for the block layer request is rounded down, resulting in a qiov that doesn't match the request length. Truncate the qiov to the new length of the request. This fixes the IDE qtest case /x86_64/ide/bmdma/short_prdt. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
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