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2018-05-30cli: add --preconfig optionIgor Mammedov
This option allows pausing QEMU in the new RUN_STATE_PRECONFIG state, allowing the configuration of QEMU from QMP before the machine jumps into board initialization code of machine_run_board_init() The intent is to allow management to query machine state and additionally configure it using previous query results within one QEMU instance (i.e. eliminate the need to start QEMU twice, 1st to query board specific parameters and 2nd for actual VM start using query results for additional parameters). The new option complements -S option and could be used with or without it. The difference is that -S pauses QEMU when the machine is completely initialized with all devices wired up and ready to execute guest code (QEMU needs only to unpause VCPUs to let guest execute its code), while the "preconfig" option pauses QEMU early before board specific init callback (machine_run_board_init) is executed and allows the configuration of machine parameters which will be used by board init code. When early introspection/configuration is done, command 'exit-preconfig' should be used to exit RUN_STATE_PRECONFIG and transition to the next requested state (i.e. if -S is used then QEMU will pause the second time when board/device initialization is completed or start guest execution if -S isn't provided on CLI) PS: Initially 'preconfig' is planned to be used for configuring numa topology depending on board specified possible cpus layout. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <1526059483-42847-1-git-send-email-imammedo@redhat.com> [ehabkost: Changed "since 2.13" to "since 3.0"] Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2016-10-07qemu-doc: merge qemu-tech and qemu-docPaolo Bonzini
Merge what is left of qemu-tech into the main manual as an appendix. Ultimately we should have a new internals manual built from docs/, and then the "Translator Internals" parts of qemu-tech could move to docs/ as well. The bits on limitation and features of CPU emulation should remain in qemu-doc. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-10-07qemu-tech: rewrite some partsPaolo Bonzini
Drop most the device emulation part and merge the rest into the description of the MMU. Make some bits more up-to-date. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-10-07qemu-tech: reorganize contentPaolo Bonzini
Split more parts into separate chapters, place comparison last, rename "Introduction" to "CPU emulation". Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-10-07qemu-tech: move TCG test documentation to tests/tcg/READMEPaolo Bonzini
Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-10-07qemu-tech: move user mode emulation features from qemu-techPaolo Bonzini
These are interesting for users too, since nowadays most qemu-user users are going to be somewhat technical rather than just people that want to run Wine. Some detail is lost, on the other hand some of the information I removed (e.g. basic block unchaining) was obsolete. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-10-07qemu-tech: document lazy condition code evaluation in cpu.hPaolo Bonzini
Unlike the other sections, they are pretty specific to a particular CPU. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-10-07qemu-tech: move text from qemu-tech to tcg/READMEPaolo Bonzini
Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-10-07qemu-doc: replace introduction with the one from the internals manualPaolo Bonzini
The user manual has an obsolete introduction, and the one in the internals manual lists QEMU's features quite nicely. Drop the obsolete content and remove generic user-level documentation from qemu-tech. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-10-07qemu-tech: drop indexPaolo Bonzini
Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-09-15Remove remainders of HPPA backendThomas Huth
The HPPA backend has been removed by the following commit: 802b5081233a6b643a8b135a5facaf14bafaa77d tcg-hppa: Remove tcg backend But some small pieces of the HPPA backend still survived until today. Since we also do not have support for a HPPA target in QEMU, we can nowadays safely remove the remaining HPPA parts (like the disassembler code, or the detection of HPPA in the configure script). Signed-off-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2016-02-23tcg: Rename tcg-target.c to tcg-target.inc.cPeter Maydell
Rename the per-architecture tcg-target.c files to tcg-target.inc.c. This makes it clearer that they are not intended to be standalone C files, but are instead #included into another source file. Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-Id: <1456238983-10160-2-git-send-email-peter.maydell@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-09-25doc: Refresh URLs in the qemu-tech documentationThomas Huth
The TwoOStwo and Willows page seem to have disappeared completely, and also some of the other links were not pointing to the right locations anymore. Signed-off-by: Thomas Huth <thuth@redhat.com> Message-Id: <1443173916-8895-1-git-send-email-thuth@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-07-24qemu-doc: fix typosGonglei
Signed-off-by: Gonglei <arei.gonglei@huawei.com> Message-Id: <1435917057-9396-1-git-send-email-arei.gonglei@huawei.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-11-29qemu-tech.texi: update implemented xtensa features listMax Filippov
Debug option is available since QEMU-1.2; FP coprocessor and coprocessor context is available since QEMU-1.3. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-07-17doc: Fix indefinite article an -> a before nouns that begin with 'h'Stefan Weil
Although the rule also allows 'an' for historical reasons, 'a' is more common because 'h' is pronounced. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-05-01Drop darwin-userAndreas Färber
It's been orphaned, not compiling for a long time and despite Apple's drop of their Rosetta ppc emulation technology with Mac OS X Lion no one has stepped up to fix it. Testing necessary changes wrt QOM'ification thus is impossible, so we might as well remove it completely. Signed-off-by: Andreas Färber <afaerber@suse.de> Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
2011-12-09qemu-tech.texi: Remove libqemu related stuff from the documentChen Wei-Ren
Remove libqemu related stuff from the document since libqemu.a is not supported anymore. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Chen Wei-Ren <chenwj@iis.sinica.edu.tw> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-11-10qemu-tech.texi: Update default code cache size陳韋任
Update the document since the default code cache size is 32 MB now. Signed-off-by: chenwj <chenwj@cs.nctu.edu.tw> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-10-15target-xtensa: update qemu-doc.texiMax Filippov
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-01-09qemu-tech: Spelling fixesStefan Weil
Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-02-10Documentation: Use UTF-8 encoding and fix one wrong encodingStefan Weil
At least for Linux distributions UTF-8 is now standard, so the QEMU documentation should use this encoding, too. Even if there was currently only a single special character using ISO-8859-1, this might change in the future. So the texinfo keywords @documentlanguage and @documentencoding now document the language and the encoding. The special character was changed to UTF-8 (it could also have been changed to an x, but the original cross looks really nice if it is displayed correctly). These changes fix the html presentation at http://www.qemu.org/qemu-doc.html#SEC65 (ARM System emulator). Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-02-10Documentation: Add direntry for info formatStefan Weil
update-info-dir maintains an index of all available documentation in info format (the file /usr/share/info/dir). It reads special @direntry tags in info files. This patch (extracted from a larger patch provided by Dirk Ullrich) adds these tags for qemu-doc.info and qemu-tech.info. Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-08-24Unbreak large mem support by removing kqemuAnthony Liguori
kqemu introduces a number of restrictions on the i386 target. The worst is that it prevents large memory from working in the default build. Furthermore, kqemu is fundamentally flawed in a number of ways. It relies on the TSC as a time source which will not be reliable on a multiple processor system in userspace. Since most modern processors are multicore, this severely limits the utility of kqemu. kvm is a viable alternative for people looking to accelerate qemu and has the benefit of being supported by the upstream Linux kernel. If someone can implement work arounds to remove the restrictions introduced by kqemu, I'm happy to avoid and/or revert this patch. N.B. kqemu will still function in the 0.11 series but this patch removes it from the 0.12 series. Paul, please Ack or Nack this patch. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-05-10Update docs on dynamic condition code calculationBlue Swirl
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2008-10-09Update (thanks to Edgar, Thiemo, malc, Paul, Laurent and Andrzej)blueswir1
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5453 c046a42c-6fe2-441c-8c8c-71466251a162
2008-06-03Spelling fixes, by Stefan Weil.ths
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4655 c046a42c-6fe2-441c-8c8c-71466251a162
2007-11-25 128-bit float support for user modeblueswir1
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3740 c046a42c-6fe2-441c-8c8c-71466251a162
2007-10-20 Update Sparc parts in documentationblueswir1
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3413 c046a42c-6fe2-441c-8c8c-71466251a162
2007-09-16find -type f | xargs sed -i 's/[\t ]$//g' # on most filesths
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3173 c046a42c-6fe2-441c-8c8c-71466251a162
2007-07-12More documentation bits, from Stefan Weil.ths
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3073 c046a42c-6fe2-441c-8c8c-71466251a162
2007-07-11Documentation update for MIPS.ths
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3056 c046a42c-6fe2-441c-8c8c-71466251a162
2007-04-05Documentation updateblueswir1
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2605 c046a42c-6fe2-441c-8c8c-71466251a162
2007-03-23Sparc tagged operations (Aurelien Jarno)blueswir1
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2531 c046a42c-6fe2-441c-8c8c-71466251a162
2006-04-30Enhanced Documentation (Stefan Weil)bellard
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1873 c046a42c-6fe2-441c-8c8c-71466251a162
2005-07-23sparc64 fixes (Blue Swirl)bellard
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1514 c046a42c-6fe2-441c-8c8c-71466251a162
2005-07-02sparc64 marge (Blue Swirl)bellard
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1462 c046a42c-6fe2-441c-8c8c-71466251a162
2005-04-30typosbellard
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1427 c046a42c-6fe2-441c-8c8c-71466251a162
2004-12-19SPARC mergebellard
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1179 c046a42c-6fe2-441c-8c8c-71466251a162
2004-09-05updatebellard
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1058 c046a42c-6fe2-441c-8c8c-71466251a162
2004-07-08doc updatebellard
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@990 c046a42c-6fe2-441c-8c8c-71466251a162
2004-04-24updatebellard
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@740 c046a42c-6fe2-441c-8c8c-71466251a162
2004-04-04doc updatebellard
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@705 c046a42c-6fe2-441c-8c8c-71466251a162
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