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2019-03-12file-posix: Store BDRVRawState.reopen_state during reopenKevin Wolf
We'll want to access the file descriptor in the reopen_state while processing permission changes in the context of the repoen. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2019-03-12file-posix: Factor out raw_reconfigure_getfd()Kevin Wolf
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2019-03-12file-posix: Fix bdrv_open_flags() for snapshot=onKevin Wolf
Using a different read-only setting for bs->open_flags than for the flags to the driver's open function is just inconsistent and a bad idea. After this patch, the temporary snapshot keeps being opened read-only if read-only=on,snapshot=on is passed. If we wanted to change this behaviour to make only the orginal image file read-only, but the temporary overlay read-write (as the comment in the removed code suggests), that change would have to be made in bdrv_temp_snapshot_options() (where the comment suggests otherwise). Addressing this inconsistency before introducing dynamic auto-read-only is important because otherwise we would immediately try to reopen the temporary overlay even though the file is already unlinked. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2019-03-12block: Make permission changes in reopen less wrongKevin Wolf
The way that reopen interacts with permission changes has one big problem: Both operations are recursive, and the permissions are changes for each node in the reopen queue. For a simple graph that consists just of parent and child, .bdrv_check_perm will be called twice for the child, once recursively when adjusting the permissions of parent, and once again when the child itself is reopened. Even worse, the first .bdrv_check_perm call happens before .bdrv_reopen_prepare was called for the child and the second one is called afterwards. Making sure that .bdrv_check_perm (and the other permission callbacks) are called only once is hard. We can cope with multiple calls right now, but as soon as file-posix gets a dynamic auto-read-only that may need to open a new file descriptor, we get the additional requirement that all of them are after the .bdrv_reopen_prepare call. So reorder things in bdrv_reopen_multiple() to first call .bdrv_reopen_prepare for all involved nodes and only then adjust permissions. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2019-03-12block: Avoid useless local_errKevin Wolf
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Eric Blake <eblake@redhat.com>
2019-03-12qemu-iotests: commit to backing file with auto-read-onlyKevin Wolf
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
2019-03-12tests/virtio-blk-test: Disable auto-read-onlyKevin Wolf
tests/virtio-blk-test uses a temporary image file that it deletes while QEMU is still running, so it can't be reopened when writers are attached or detached. Disable auto-read-only to keep it always writable. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
2019-03-12qapi: drop x- from x-block-latency-histogram-setVladimir Sementsov-Ogievskiy
Drop x- and x_ prefixes for latency histograms and update version to 4.0 Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2019-03-12tests/qemu-iotests: add bitmap resize test 246John Snow
Test that we can actually resize qcow2 images with persistent bitmaps correctly. Throw some other goofy stuff at the test while we're at it, like adding bitmaps of different granularities and at different times. Signed-off-by: John Snow <jsnow@redhat.com> Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Tested-by: Eric Blake <eblake@redhat.com> Message-id: 20190311185147.52309-5-vsementsov@virtuozzo.com [vsmentsov: drop \n from the end of test output, test output changed a bit: some bitmaps goes in other order int the output] Signed-off-by: John Snow <jsnow@redhat.com>
2019-03-12block/qcow2-bitmap: Allow resizes with persistent bitmapsJohn Snow
Since we now load all bitmaps into memory anyway, we can just truncate them in-memory and then flush them back to disk. Just in case, we will still check and enforce that this shortcut is valid -- i.e. that any bitmap described on-disk is indeed in-memory and can be modified. If there are any inconsistent bitmaps, we refuse to allow the truncate as we do not actually load these bitmaps into memory, and it isn't safe or reasonable to attempt to truncate corrupted data. Signed-off-by: John Snow <jsnow@redhat.com> Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Message-id: 20190311185147.52309-4-vsementsov@virtuozzo.com [vsementsov: drop bitmap flushing, fix block comments style] Signed-off-by: John Snow <jsnow@redhat.com>
2019-03-12block/qcow2-bitmap: Don't check size for IN_USE bitmapVladimir Sementsov-Ogievskiy
We are going to allow image resize when there are persistent bitmaps. It may lead to appearing of inconsistent bitmaps (IN_USE=1) with inconsistent size. But we still want to load them as inconsistent. Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Message-id: 20190311185147.52309-3-vsementsov@virtuozzo.com Signed-off-by: John Snow <jsnow@redhat.com>
2019-03-12Merge remote-tracking branch ↵Peter Maydell
'remotes/ehabkost/tags/python-next-pull-request' into staging qmp-shell: fix nested json regression One small bug fix. # gpg: Signature made Tue 12 Mar 2019 02:16:24 GMT # gpg: using RSA key 2807936F984DC5A6 # gpg: Good signature from "Eduardo Habkost <ehabkost@redhat.com>" [full] # Primary key fingerprint: 5A32 2FD5 ABC4 D3DB ACCF D1AA 2807 936F 984D C5A6 * remotes/ehabkost/tags/python-next-pull-request: qmp-shell: fix nested json regression Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-03-12.travis.yml: add softmmu check-tcg testsAlex Bennée
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
2019-03-12.travis.yml: separate softfloat from check-tcgAlex Bennée
While used by TCG it is not explicitly part of TCG and the tests can be run standalone in a minimal build. Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
2019-03-12tests/tcg/arm: account for pauth randomnessAlex Bennée
Pointer authentication isn't guaranteed to always detect a clash between different keys. Take this into account in the test by running several times and checking the percentage hit rate of the test. Cc: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
2019-03-12tests/tcg/i386: add memory test to exercise softmmuAlex Bennée
This is a simple test to check various access patterns to memory including unaligned access. Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
2019-03-12tests/tcg/i386: add system mode Hello World testAlex Bennée
This introduces the build framework for simple i386 system tests. The first test is the eponymous "Hello World" which simply outputs the text on the serial port and then exits. I've included the framework for x86_64 but it is not in this series as it is a work in progress. Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
2019-03-12tests/tcg: provide a minilib for system testsAlex Bennée
We will likely want a few common functions to make up for the fact we don't have a libc and we don't want to feel like we are programming by banging rocks together. I've purloined the printf function from: https://git.virtualopensystems.com/dev/tcg_baremetal_tests Although I have tweaked the names to avoid confusing GCC about clashing with builtins. Cc: Alexander Spyridakis <a.spyridakis@virtualopensystems.com> Cc: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
2019-03-12tests/tcg: enable cris base user-mode testsAlex Bennée
This converts the existing Makefile into a Makefile.target and updates it so it can be called by the tcg build system. The original Makefile didn't set -cpu except for the v17 tests however that has broken (I assume because linux-user is a "max" cpu) so here I force it to be crisv17. I've also replicated the GNU simulator targets (run-FOO-on-sim). Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
2019-03-12tests/tcg/cris: align mul operationsAlex Bennée
To avoid: Error: dangerous MULS/MULU location; give it higher alignment Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
2019-03-12tests/tcg/cris: comment out the ccs testAlex Bennée
Evidently upstream gcc doesn't like this opcode. Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
2019-03-12tests/tcg: split cris tests into bare and libc directoriesAlex Bennée
Bare tests are standalone assembly tests that don't require linking to any libc and hence can be built with kernel only compilers. The libc tests need a compiler capable of building properly linked userspace binaries. As we don't have such a cross compiler at the moment we won't be building those tests. Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
2019-03-12tests/tcg/cris: cleanup sys.cAlex Bennée
This is a mini library which provides helper functions to the tests which are all currently written in assembly. A bunch of minor changes: - removed libc related headers (fedora-cris-cross is a system compiler) - re-organised the functions to avoid forward declarations - cleaned up brace usage - restored exit for _fail case - removed tabs and fixed indentation Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
2019-03-12tests/docker: add fedora-cris-cross compilersAlex Bennée
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
2019-03-12tests/tcg/arm: add ARMv6-M UNDEFINED 32-bit instruction testStefan Hajnoczi
Test that 32-bit instructions declared UNDEFINED in the ARMv6-M Reference Manual really do raise an exception. Also test that the 6 32-bit instructions defined in the ARMv6-M Reference Manual do not raise an exception. Based-on: <20181029194519.15628-1-stefanha@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Message-Id: <20181129185113.30353-1-stefanha@redhat.com> [AJB: integrated into system tests] Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
2019-03-12tests/tcg/xtensa: enable system testsAlex Bennée
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
2019-03-12tests/docker: add debian-xtensa-cross imagePhilippe Mathieu-Daudé
Xtensa cpu supported: - dc232b - dc233c - csp Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
2019-03-12tests/tcg/mips: fix hello-mips compilationAlex Bennée
The compilation flags for proper building are in the source tree. We also fix exit to 0 so the result is counted as a success. Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
2019-03-12tests/tcg: add gdb runner variantAlex Bennée
With this you can launch a test in gdb with: cd $(BUILD)/tests make -f $(SRC)/tests/tcg/Makefile gdb-$(TEST_NAME) Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
2019-03-12tests/tcg: split run-test into user and system variantsAlex Bennée
We can't rely on shell redirect magic to get things right so lets setup a common output chardev that is expecting to write to files. As we have split run-test up we might as well move the default monitor bits into the call. Finally a little make sophistry is required to correctly quote $(COMMA) and as we don't inherit common rules we have our own little copy here. Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
2019-03-12tests/tcg: add QEMU_OPT option for test runnerAlex Bennée
This will allow tests to modify the QEMU invocation with for example different -cpu stazas without having to define a whole new set of runner types. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2019-03-12tests/tcg: enable tcg tests for softmmuAlex Bennée
Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2019-03-12tests/tcg: add softmmu awareness to MakefileAlex Bennée
Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2019-03-12Makefile: explicitly pass $(BUILD_DIR) to gcovrAlex Bennée
Best to be explicit about where to find things. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2019-03-12Makefile: explicitly pass $(SRC_PATH) to gcovrAlex Bennée
In an out-of-tree build gcovr can get quite confused about what is going on otherwise. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2019-03-12.travis.yml: reduce the module builds to major architecturesAlex Bennée
The --enable-modules build is consistently tripping the time limit so reduce our target list to the "major" architectures. Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
2019-03-12.travis.yml: combine docs and tools build with out-of-treeAlex Bennée
We will be moving all builds out of tree eventually but for now we need to for building the docs as sphinx requires an out-of-tree build. Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
2019-03-12travis: Bump Xcode 10 image to 10.2Philippe Mathieu-Daudé
Travis enforce the use of the git protocol v2 on their images, but the 'xcode10' image doesn't handle this correctly, resulting in the brew packages installation failing: $ git config protocol.version 2 $ rvm $brew_ruby do brew bundle --verbose --global /usr/local/bin/brew tap homebrew/bundle ==> Tapping homebrew/bundle Cloning into '/usr/local/Homebrew/Library/Taps/homebrew/homebrew-bundle'... fatal: unknown value for config 'protocol.version': 2 Error: Failure while executing; `git clone https://github.com/Homebrew/homebrew-bundle /usr/local/Homebrew/Library/Taps/homebrew/homebrew-bundle --depth=1` exited with 128. Error: Failure while executing; `/usr/local/bin/brew tap homebrew/bundle` exited with 1. The newer 'xcode10.2' beta [*] image doesn't have this limitation. This image comes with the following brew packages pre-installed, which extend the current code coverage: - libffi - libpng - libtasn1 - gnutls - jpeg - nettle [*] https://blog.travis-ci.com/2019-02-12-xcode-10-2-beta-2-is-now-available Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20190220193541.24419-1-philmd@redhat.com> [AJB: re-enabled MacOS build first] Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
2019-03-12decodetree: Properly diagnose fields overflowing an insnRichard Henderson
Previously this would result in an exception for shifting the field mask by a negative number. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-03-12decodetree: Prefix extract function names with decode_functionRichard Henderson
This makes it easier to name Formats within multiple decode files. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-03-12decodetree: Allow +- to begin a number initializing a fieldRichard Henderson
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-03-12decodetree: Produce clean output for an empty input fileRichard Henderson
This is interesting for bisection, where an output file is plumbed, but does not yet have patterns. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-03-12decodetree: Add --static-decode optionRichard Henderson
Like --decode, but do not drop 'static' qualifier. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-03-12test/decode: Add tests for PatternGroupsBastian Koppelmann
This adds one test that supposed to succeed to test deep nesting of pattern groups which is rarely exercised by targets using decode tree. The remaining tests exercise various fail conditions. Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> Message-Id: <20190227120217.20794-1-kbastian@mail.uni-paderborn.de> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-03-12decodetree: Allow grouping of overlapping patternsRichard Henderson
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-03-12decodetree: Do not unconditionaly return from Pattern.output_codeRichard Henderson
As a consequence, the 'return false' gets pushed up one level. This will allow us to perform some other action when the translator returns failure. Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-03-12decodetree: Ensure build_tree does not include values outside insnmaskPhilippe Mathieu-Daudé
Reproduced with "scripts/decodetree.py /dev/null". Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> Reviewed-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-03-12decodetree: Document the usefulness of argument setsRichard Henderson
Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-03-12decodetree: Move documentation to docs/devel/decodetree.rstRichard Henderson
One great big block comment isn't the best way to document the syntax of a language. Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-03-12MAINTAINERS: Add scripts/decodetree.py to the TCG sectionPhilippe Mathieu-Daudé
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20181110211313.6922-2-f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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