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2020-10-05cpus: extract out kvm-specific code to accel/kvmClaudio Fontana
register a "CpusAccel" interface for KVM as well. Signed-off-by: Claudio Fontana <cfontana@suse.de> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com> [added const] Signed-off-by: Claudio Fontana <cfontana@suse.de> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-10-05cpus: extract out qtest-specific code to accel/qtestClaudio Fontana
register a "CpusAccel" interface for qtest as well. Signed-off-by: Claudio Fontana <cfontana@suse.de> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-10-05cpus: extract out TCG-specific code to accel/tcgClaudio Fontana
TCG is the first accelerator to register a "CpusAccel" interface on initialization, providing functions for starting a vcpu, kicking a vcpu, sychronizing state and getting virtual clock and ticks. Signed-off-by: Claudio Fontana <cfontana@suse.de> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com> [added const] Signed-off-by: Claudio Fontana <cfontana@suse.de> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-10-05cpus: prepare new CpusAccel cpu accelerator interfaceClaudio Fontana
The new interface starts unused, will start being used by the next patches. It provides methods for each accelerator to start a vcpu, kick a vcpu, synchronize state, get cpu virtual clock and elapsed ticks. In qemu_wait_io_event, make it clear that APC is used only for HAX on Windows. Signed-off-by: Claudio Fontana <cfontana@suse.de> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-10-05icount: rename functions to be consistent with the module nameClaudio Fontana
Signed-off-by: Claudio Fontana <cfontana@suse.de> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-10-05cpu-timers, icount: new modulesClaudio Fontana
refactoring of cpus.c continues with cpu timer state extraction. cpu-timers: responsible for the softmmu cpu timers state, including cpu clocks and ticks. icount: counts the TCG instructions executed. As such it is specific to the TCG accelerator. Therefore, it is built only under CONFIG_TCG. One complication is due to qtest, which uses an icount field to warp time as part of qtest (qtest_clock_warp). In order to solve this problem, provide a separate counter for qtest. This requires fixing assumptions scattered in the code that qtest_enabled() implies icount_enabled(), checking each specific case. Signed-off-by: Claudio Fontana <cfontana@suse.de> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> [remove redundant initialization with qemu_spice_init] Reviewed-by: Alex Bennée <alex.bennee@linaro.org> [fix lingering calls to icount_get] Signed-off-by: Claudio Fontana <cfontana@suse.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-10-05Merge remote-tracking branch 'remotes/bonzini-gitlab/tags/for-upstream' into ↵Peter Maydell
staging * move target configuration to default-configs/targets (myself) * Memory failure event (Zhenwei) # gpg: Signature made Mon 05 Oct 2020 08:14:29 BST # gpg: using RSA key F13338574B662389866C7682BFFBD25F78C7AE83 # gpg: issuer "pbonzini@redhat.com" # gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [full] # gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" [full] # Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1 # Subkey fingerprint: F133 3857 4B66 2389 866C 7682 BFFB D25F 78C7 AE83 * remotes/bonzini-gitlab/tags/for-upstream: dockerfiles: add diffutils to Fedora tests: tcg: do not use implicit rules target-i386: post memory failure event to QMP qapi/run-state.json: introduce memory failure event target-i386: seperate MCIP & MCE_MASK error reason meson: move sparse detection to Meson and rewrite check_sparse.py default-configs: remove redundant keys default-configs: use TARGET_ARCH key configure: move OpenBSD W^X test to meson default-configs: remove default-configs/devices for user-mode targets configure: remove target configuration configure: remove useless config-target.mak symbols configure: compute derivatives of target name in meson configure: remove dead variable configure: move accelerator logic to meson configure: rewrite accelerator defaults as tests configure: convert accelerator variables to meson options default-configs: move files to default-configs/devices/ travis: remove TCI test Signed-off-by: Peter Maydell <peter.maydell@linaro.org> # Conflicts: # configure
2020-10-05Merge remote-tracking branch 'remotes/rth-gitlab/tags/pull-cap-20201003' ↵Peter Maydell
into staging Update capstone submodule from v3.0.5 to v5 ("next"). Convert submodule build to meson. Enable capstone disassembly for s390x. Code cleanups in disas.c # gpg: Signature made Sat 03 Oct 2020 10:33:44 BST # gpg: using RSA key 7A481E78868B4DB6A85A05C064DF38E8AF7E215F # gpg: issuer "richard.henderson@linaro.org" # gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [full] # Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A 05C0 64DF 38E8 AF7E 215F * remotes/rth-gitlab/tags/pull-cap-20201003: disas/capstone: Add skipdata hook for s390x disas: Enable capstone disassembly for s390x disas: Split out capstone code to disas/capstone.c disas: Configure capstone for aarch64 host without libvixl disas: Cleanup plugin_disas disas: Use qemu/bswap.h for bfd endian loads disas: Clean up CPUDebug initialization disas: Move host asm annotations to tb_gen_code capstone: Require version 4.0 from a system library capstone: Update to upstream "next" branch capstone: Convert Makefile bits to meson bits Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-10-05dockerfiles: add diffutils to FedoraPaolo Bonzini
For some reason diffutils is not included in the Fedora containers anymore, causing the build to fail. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Neal Gompa <ngompa13@gmail.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20201003085054.332992-2-pbonzini@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-10-04tests: tcg: do not use implicit rulesPaolo Bonzini
Use pattern rules to clarify which targets are going to match the rule and to provide clearer error messages. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-10-04target-i386: post memory failure event to QMPzhenwei pi
Post memory failure event through QMP to handle hardware memory corrupted event. Rather than simply printing to the log, QEMU could report more effective message to the client. For example, if a guest receives an MCE, evacuating the host could be a good idea. Signed-off-by: zhenwei pi <pizhenwei@bytedance.com> Message-Id: <20200930100440.1060708-4-pizhenwei@bytedance.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-10-04qapi/run-state.json: introduce memory failure eventzhenwei pi
Introduce memory failure events for hypervisor and guest. This lets mft: Need exactly one file argument. Try `mft --help' for more information. Suggested by Peter Maydell, rename events name&description to make them architecture-neutral; and suggested by Paolo, add more info to distinguish a mce is AR/AO, and if a previous MCE was still being processed in the guest. Signed-off-by: zhenwei pi <pizhenwei@bytedance.com> Message-Id: <20200930100440.1060708-3-pizhenwei@bytedance.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-10-04target-i386: seperate MCIP & MCE_MASK error reasonzhenwei pi
Previously we would only get a simple string "Triple fault" in qemu log. Add detailed message for the two reasons to describe why qemu has to reset the guest. Signed-off-by: zhenwei pi <pizhenwei@bytedance.com> Message-Id: <20200930100440.1060708-2-pizhenwei@bytedance.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-10-04meson: move sparse detection to Meson and rewrite check_sparse.pyPaolo Bonzini
Pass the path to the program to scripts/check_sparse.py, which previously was not included in config-host.mak. Change scripts/check_sparse.py to work with cgcc, which seems to work better with sparse 0.6.x. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-10-03default-configs: remove redundant keysPaolo Bonzini
TARGET_BASE_ARCH and TARGET_ABI_DIR are 99% of the time the same as TARGET_ARCH, remove them if so. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-10-03default-configs: use TARGET_ARCH keyPaolo Bonzini
Replace the individual TARGET_*=y lines with TARGET_ARCH, similar to how TARGET_BASE_ARCH is handled already. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-10-03configure: move OpenBSD W^X test to mesonPaolo Bonzini
The TCG option is now passed through to Meson. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-10-03default-configs: remove default-configs/devices for user-mode targetsPaolo Bonzini
We no longer need dummy files to detect targets, since default-configs/targets/ exists. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-10-03configure: remove target configurationPaolo Bonzini
The config-target.mak files are small constant, we can therefore just write them down explicitly. This removes a pretty large part of the configure script, including the whole logic to detect which accelerators are supported by each target. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-10-03configure: remove useless config-target.mak symbolsPaolo Bonzini
Omit symbols that are not needed by softmmu or bsd-user targets, in preparation for moving the generated config-target.mak files into the source tree. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-10-03configure: compute derivatives of target name in mesonPaolo Bonzini
Several CONFIG_* symbols in config-target.mak are easily computed from just the target name. We do not need them in config-target.mak, and can instead place them in the config_target dictionary only. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-10-03configure: remove dead variablePaolo Bonzini
Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-10-03configure: move accelerator logic to mesonPaolo Bonzini
Move to meson the code to detect the presence of accelerators, and to define accelerator-specific config-target.h symbols. The logic for now is duplicated in configure because it is still in use to build the list of targets (which is in turn used to create the config-target.mak files). The next patches remove it. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-10-03configure: rewrite accelerator defaults as testsPaolo Bonzini
Prepare to process "auto" in meson rather than configure: standardize the shape of the code that changes "auto" to enabled/disabled, to ease the review when it will be moved to meson. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-10-03configure: convert accelerator variables to meson optionsPaolo Bonzini
Prepare for moving the tests to meson. For now they only have enabled/disabled as the possible values when meson is invoked, but "auto" will be a possibility later, when configure will only parse the command line options. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-10-03default-configs: move files to default-configs/devices/Paolo Bonzini
Make room for target files in default-configs/targets/ Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-10-03travis: remove TCI testPaolo Bonzini
TCI is already covered on gitlab CI, so we can remove it. Cc: Thomas Huth <thuth@redhat.com> Cc: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-10-03disas/capstone: Add skipdata hook for s390xRichard Henderson
It is always possible to tell the length of an insn, even if the actual insn is unknown. Skip the correct number of bytes, so that we stay in sync with the instruction stream. Acked-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2020-10-03disas: Enable capstone disassembly for s390xRichard Henderson
Enable s390x, aka SYSZ, in the git submodule build. Set the capstone parameters for both s390x host and guest. Tested-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Acked-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2020-10-03disas: Split out capstone code to disas/capstone.cRichard Henderson
There is nothing target-specific about this code, so it can be added to common_ss. This also requires that the base capstone dependency be added to common_ss, so that we get the correct include paths added to CFLAGS. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2020-10-03disas: Configure capstone for aarch64 host without libvixlRichard Henderson
The ifdef tangle failed to set cap_arch if libvixl itself was not configured (e.g. due to lack of c++ compiler). Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2020-10-03disas: Cleanup plugin_disasRichard Henderson
Do not retain a GString in thread-local storage. Allocate a new one and free it on every invocation. Do not g_strdup the result; return the buffer from the GString. Do not use warn_report. Using cs_disasm allocated memory via the &insn parameter, but that was never freed. Use cs_disasm_iter so that we use the memory that we've already allocated, and so that we only try to disassemble one insn, as desired. Do not allocate 1k to hold the bytes for a single instruction. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2020-10-03disas: Use qemu/bswap.h for bfd endian loadsRichard Henderson
Use the routines we have already instead of open-coding. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2020-10-03disas: Clean up CPUDebug initializationRichard Henderson
Rename several functions, dropping "generic" and making "host" vs "target" clearer. Make a bunch of functions static that are not used outside this file. Replace INIT_DISASSEMBLE_INFO with a trio of functions. Acked-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2020-10-03disas: Move host asm annotations to tb_gen_codeRichard Henderson
Instead of creating GStrings and passing them into log_disas, just print the annotations directly in tb_gen_code. Fix the annotations for the slow paths of the TB, after the part implementing the final guest instruction. Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2020-10-03capstone: Require version 4.0 from a system libraryRichard Henderson
We're about to use a portion of the 4.0 API. Reject a system library version prior to that. Tested-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2020-10-03capstone: Update to upstream "next" branchRichard Henderson
This branch contains a number of improvements over master, including making all of the disassembler data constant. We are skipping past the 4.0 branchpoint, which changed the location of the includes within the source directory. Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2020-10-03capstone: Convert Makefile bits to meson bitsRichard Henderson
There are better ways to do this, e.g. meson cmake subproject, but that requires cmake 3.7 and some of our CI environments only provide cmake 3.5. Nor can we add a meson.build file to capstone/, because the git submodule would then always report "untracked files". Fixing that would require creating our own branch on the qemu git mirror, at which point we could just as easily create a native meson subproject. Instead, build the library via the main meson.build. This improves the current state of affairs in that we will re-link the qemu executables against a changed libcapstone.a, which we wouldn't do before-hand. In addition, the use of the configuration header file instead of command-line -DEFINES means that we will rebuild the capstone objects with changes to meson.build. Acked-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2020-10-02Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into stagingPeter Maydell
Block layer patches: - Add block export infrastructure - iotests improvements - Document the throttle block filter - Misc code cleanups # gpg: Signature made Fri 02 Oct 2020 15:36:53 BST # gpg: using RSA key DC3DEB159A9AF95D3D7456FE7F09B272C88F2FD6 # gpg: issuer "kwolf@redhat.com" # gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" [full] # Primary key fingerprint: DC3D EB15 9A9A F95D 3D74 56FE 7F09 B272 C88F 2FD6 * remotes/kevin/tags/for-upstream: (37 commits) qcow2: Use L1E_SIZE in qcow2_write_l1_entry() qemu-storage-daemon: Fix help line for --export iotests: Test block-export-* QMP interface iotests: Allow supported and unsupported formats at the same time iotests: Introduce qemu_nbd_list_log() iotests: Factor out qemu_tool_pipe_and_status() nbd: Deprecate nbd-server-add/remove nbd: Merge nbd_export_new() and nbd_export_create() block/export: Move writable to BlockExportOptions block/export: Add query-block-exports block/export: Create BlockBackend in blk_exp_add() block/export: Move blk to BlockExport block/export: Add BLOCK_EXPORT_DELETED event block/export: Add block-export-del block/export: Move strong user reference to block_exports block/export: Add 'id' option to block-export-add block/export: Add blk_exp_close_all(_type) block/export: Allocate BlockExport in blk_exp_add() block/export: Add node-name to BlockExportOptions block/export: Move AioContext from NBDExport to BlockExport ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-10-02qcow2: Use L1E_SIZE in qcow2_write_l1_entry()Alberto Garcia
We overlooked these in 02b1ecfa100e7ecc2306560cd27a4a2622bfeb04 Signed-off-by: Alberto Garcia <berto@igalia.com> Message-Id: <20200928162333.14998-1-berto@igalia.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-10-02qemu-storage-daemon: Fix help line for --exportKevin Wolf
Commit 5f479a8d renamed the 'device' option of --export into 'node-name', but forgot to update the help in qemu-storage-daemon. Fixes: 5f479a8dc086bfa42c9f94e9ab69962f256e207f Signed-off-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <20200930133909.58820-1-kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-10-02iotests: Test block-export-* QMP interfaceKevin Wolf
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <20200924152717.287415-32-kwolf@redhat.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-10-02iotests: Allow supported and unsupported formats at the same timeKevin Wolf
This is useful for specifying 'generic' as supported (which includes only writable image formats), but still excluding some incompatible writable formats. It also removes more lines than it adds. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <20200924152717.287415-31-kwolf@redhat.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-10-02iotests: Introduce qemu_nbd_list_log()Kevin Wolf
Add a function to list the NBD exports offered by an NBD server. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <20200924152717.287415-30-kwolf@redhat.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-10-02iotests: Factor out qemu_tool_pipe_and_status()Kevin Wolf
We have three almost identical functions that call an external process and return its output and return code. Refactor them into small wrappers around a common function. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <20200924152717.287415-29-kwolf@redhat.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-10-02nbd: Deprecate nbd-server-add/removeKevin Wolf
These QMP commands are replaced by block-export-add/del. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <20200924152717.287415-28-kwolf@redhat.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-10-02nbd: Merge nbd_export_new() and nbd_export_create()Kevin Wolf
There is no real reason any more why nbd_export_new() and nbd_export_create() should be separate functions. The latter only performs a few checks before it calls the former. What makes the current state stand out is that it's the only function in BlockExportDriver that is not a static function inside nbd/server.c, but a small wrapper in blockdev-nbd.c that then calls back into nbd/server.c for the real functionality. Move all the checks to nbd/server.c and make the resulting function static to improve readability. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Message-Id: <20200924152717.287415-27-kwolf@redhat.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-10-02block/export: Move writable to BlockExportOptionsKevin Wolf
The 'writable' option is a basic option that will probably be applicable to most if not all export types that we will implement. Move it from NBD to the generic BlockExport layer. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Message-Id: <20200924152717.287415-26-kwolf@redhat.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-10-02block/export: Add query-block-exportsKevin Wolf
This adds a simple QMP command to query the list of block exports. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Message-Id: <20200924152717.287415-25-kwolf@redhat.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-10-02block/export: Create BlockBackend in blk_exp_add()Kevin Wolf
Every export type will need a BlockBackend, so creating it centrally in blk_exp_add() instead of the .create driver callback avoids duplication. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Message-Id: <20200924152717.287415-24-kwolf@redhat.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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