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2021-10-15vl: Enable JSON syntax for -deviceKevin Wolf1-7/+56
Like we already do for -object, introduce support for JSON syntax in -device, which can be kept stable in the long term and guarantees that a single code path with identical behaviour is used for both QMP and the command line. Compared to the QemuOpts based code, the parser contains less surprises and has support for non-scalar options (lists and structs). Switching management tools to JSON means that we can more easily change the "human" CLI syntax from QemuOpts to the keyval parser later. In the QAPI schema, a feature flag is added to the device-add command to allow management tools to detect support for this. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20211008133442.141332-16-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>
2021-10-15qdev: Base object creation on QDict rather than QemuOptsKevin Wolf1-38/+31
QDicts are both what QMP natively uses and what the keyval parser produces. Going through QemuOpts isn't useful for either one, so switch the main device creation function to QDicts. By sharing more code with the -object/object-add code path, we can even reduce the code size a bit. This commit doesn't remove the detour through QemuOpts from any code path yet, but it allows the following commits to do so. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <20211008133442.141332-15-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>
2021-10-15qdev: Add Error parameter to hide_device() callbacksKevin Wolf1-1/+4
hide_device() is used for virtio-net failover, where the standby virtio device delays creation of the primary device. It only makes sense to have a single primary device for each standby device. Adding a second one should result in an error instead of hiding it and never using it afterwards. Prepare for this by adding an Error parameter to the hide_device() callback where virtio-net is informed about adding a primary device. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <20211008133442.141332-12-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>
2021-10-15softmmu/qdev-monitor: add error handling in qdev_set_idDamien Hedde1-10/+29
qdev_set_id() is mostly used when the user adds a device (using -device cli option or device_add qmp command). This commit adds an error parameter to handle the case where the given id is already taken. Also document the function and add a return value in order to be able to capture success/failure: the function now returns the id in case of success, or NULL in case of failure. The commit modifies the 2 calling places (qdev-monitor and xen-legacy-backend) to add the error object parameter. Note that the id is, right now, guaranteed to be unique because all ids came from the "device" QemuOptsList where the id is used as key. This addition is a preparation for a future commit which will relax the uniqueness. Signed-off-by: Damien Hedde <damien.hedde@greensocs.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <20211008133442.141332-10-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>
2021-10-15qdev: Make DeviceState.id independent of QemuOptsKevin Wolf1-2/+3
DeviceState.id is a pointer to a string that is stored in the QemuOpts object DeviceState.opts and freed together with it. We want to create devices without going through QemuOpts in the future, so make this a separately allocated string. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Message-Id: <20211008133442.141332-9-kwolf@redhat.com> Reviewed-by: Damien Hedde <damien.hedde@greensocs.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Tested-by: Peter Krempa <pkrempa@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2021-10-15qdev: Avoid using string visitor for propertiesKevin Wolf1-3/+17
The only thing the string visitor adds compared to a keyval visitor is list support. git grep for 'visit_start_list' and 'visit.*List' shows that devices don't make use of this. In a world with a QAPIfied command line interface, the keyval visitor is used to parse the command line. In order to make sure that no devices start using this feature that would make backwards compatibility harder, just switch away from object_property_parse(), which internally uses the string visitor, to a keyval visitor and object_property_set(). Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20211008133442.141332-8-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>
2021-10-13Merge remote-tracking branch 'remotes/rth/tags/pull-tcg-20211013' into stagingRichard Henderson1-10/+10
Use MO_128 for 16-byte atomic memory operations. Add cpu_ld/st_mmu memory primitives. Move helper_ld/st memory helpers out of tcg.h. Canonicalize alignment flags in MemOp. # gpg: Signature made Wed 13 Oct 2021 10:48:45 AM PDT # gpg: using RSA key 7A481E78868B4DB6A85A05C064DF38E8AF7E215F # gpg: issuer "richard.henderson@linaro.org" # gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [ultimate] * remotes/rth/tags/pull-tcg-20211013: tcg: Canonicalize alignment flags in MemOp tcg: Move helper_*_mmu decls to tcg/tcg-ldst.h target/arm: Use cpu_*_mmu instead of helper_*_mmu target/sparc: Use cpu_*_mmu instead of helper_*_mmu target/s390x: Use cpu_*_mmu instead of helper_*_mmu target/mips: Use 8-byte memory ops for msa load/store target/mips: Use cpu_*_data_ra for msa load/store accel/tcg: Move cpu_atomic decls to exec/cpu_ldst.h accel/tcg: Add cpu_{ld,st}*_mmu interfaces target/hexagon: Implement cpu_mmu_index target/s390x: Use MO_128 for 16 byte atomics target/ppc: Use MO_128 for 16 byte atomics target/i386: Use MO_128 for 16 byte atomics target/arm: Use MO_128 for 16 byte atomics memory: Log access direction for invalid accesses Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-13memory: Log access direction for invalid accessesBALATON Zoltan1-10/+10
In memory_region_access_valid() invalid accesses are logged to help debugging but the log message does not say if it was a read or write. Log that too to better identify the access causing the problem. Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu> Message-Id: <20211011173616.F1DE0756022@zero.eik.bme.hu> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-13monitor: Tidy up find_device_state()Markus Armbruster1-8/+5
Commit 6287d827d4 "monitor: allow device_del to accept QOM paths" extended find_device_state() to accept QOM paths in addition to qdev IDs. This added a checked conversion to TYPE_DEVICE at the end, which duplicates the check done for the qdev ID case earlier, except it sets a *different* error: GenericError "ID is not a hotpluggable device" when passed a QOM path, and DeviceNotFound "Device 'ID' not found" when passed a qdev ID. Fortunately, the latter won't happen as long as we add only devices to /machine/peripheral/. Earlier, commit b6cc36abb2 "qdev: device_del: Search for to be unplugged device in 'peripheral' container" rewrote the lookup by qdev ID to use QOM instead of qdev_find_recursive(), so it can handle buss-less devices. It does so by constructing an absolute QOM path. Works, but object_resolve_path_component() is easier. Switching to it also gets rid of the unclean duplication described above. While there, avoid converting to TYPE_DEVICE twice, first to check whether it's possible, and then for real. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Damien Hedde <damien.hedde@greensocs.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Message-Id: <20210916111707.84999-1-armbru@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-10-02softmmu/memory_mapping: optimize for RamDiscardManager sectionsDavid Hildenbrand1-0/+20
virtio-mem logically plugs/unplugs memory within a sparse memory region and notifies via the RamDiscardManager interface when parts become plugged (populated) or unplugged (discarded). Currently, we end up (via the two users) 1) zeroing all logically unplugged/discarded memory during TPM resets. 2) reading all logically unplugged/discarded memory when dumping, to figure out the content is zero. 1) is always bad, because we assume unplugged memory stays discarded (and is already implicitly zero). 2) isn't that bad with anonymous memory, we end up reading the zero page (slow and unnecessary, though). However, once we use some file-backed memory (future use case), even reading will populate memory. Let's cut out all parts marked as not-populated (discarded) via the RamDiscardManager. As virtio-mem is the single user, this now means that logically unplugged memory ranges will no longer be included in the dump, which results in smaller dump files and faster dumping. virtio-mem has a minimum granularity of 1 MiB (and the default is usually 2 MiB). Theoretically, we can see quite some fragmentation, in practice we won't have it completely fragmented in 1 MiB pieces. Still, we might end up with many physical ranges. Both, the ELF format and kdump seem to be ready to support many individual ranges (e.g., for ELF it seems to be UINT32_MAX, kdump has a linear bitmap). Reviewed-by: Peter Xu <peterx@redhat.com> Cc: Marc-André Lureau <marcandre.lureau@redhat.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: Eduardo Habkost <ehabkost@redhat.com> Cc: Alex Williamson <alex.williamson@redhat.com> Cc: Dr. David Alan Gilbert <dgilbert@redhat.com> Cc: Igor Mammedov <imammedo@redhat.com> Cc: Claudio Fontana <cfontana@suse.de> Cc: Thomas Huth <thuth@redhat.com> Cc: "Alex Bennée" <alex.bennee@linaro.org> Cc: Peter Xu <peterx@redhat.com> Cc: Laurent Vivier <lvivier@redhat.com> Cc: Stefan Berger <stefanb@linux.ibm.com> Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20210727082545.17934-5-david@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-10-02softmmu/memory_mapping: factor out adding physical memory rangesDavid Hildenbrand1-21/+20
Let's factor out adding a MemoryRegionSection to the list, to be reused in RamDiscardManager context next. Reviewed-by: Stefan Berger <stefanb@linux.ibm.com> Reviewed-by: Peter Xu <peterx@redhat.com> Cc: Marc-André Lureau <marcandre.lureau@redhat.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: Eduardo Habkost <ehabkost@redhat.com> Cc: Alex Williamson <alex.williamson@redhat.com> Cc: Dr. David Alan Gilbert <dgilbert@redhat.com> Cc: Igor Mammedov <imammedo@redhat.com> Cc: Claudio Fontana <cfontana@suse.de> Cc: Thomas Huth <thuth@redhat.com> Cc: "Alex Bennée" <alex.bennee@linaro.org> Cc: Peter Xu <peterx@redhat.com> Cc: Laurent Vivier <lvivier@redhat.com> Cc: Stefan Berger <stefanb@linux.ibm.com> Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20210727082545.17934-4-david@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-10-02softmmu/memory_mapping: never merge ranges accross memory regionsDavid Hildenbrand1-1/+2
Let's make sure to not merge when different memory regions are involved. Unlikely, but theoretically possible. Acked-by: Stefan Berger <stefanb@linux.ibm.com> Reviewed-by: Peter Xu <peterx@redhat.com> Cc: Marc-André Lureau <marcandre.lureau@redhat.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: Eduardo Habkost <ehabkost@redhat.com> Cc: Alex Williamson <alex.williamson@redhat.com> Cc: Dr. David Alan Gilbert <dgilbert@redhat.com> Cc: Igor Mammedov <imammedo@redhat.com> Cc: Claudio Fontana <cfontana@suse.de> Cc: Thomas Huth <thuth@redhat.com> Cc: "Alex Bennée" <alex.bennee@linaro.org> Cc: Peter Xu <peterx@redhat.com> Cc: Laurent Vivier <lvivier@redhat.com> Cc: Stefan Berger <stefanb@linux.ibm.com> Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20210727082545.17934-3-david@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-09-30memory: Add tracepoint for dirty syncPeter Xu2-0/+3
Trace at memory_region_sync_dirty_bitmap() for log_sync() or global_log_sync() on memory regions. One trace line should suffice when it finishes, so as to estimate the time used for each log sync process. Signed-off-by: Peter Xu <peterx@redhat.com> Message-Id: <20210817013706.30986-1-peterx@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-09-30memory: Name all the memory listenersPeter Xu1-0/+1
Provide a name field for all the memory listeners. It can be used to identify which memory listener is which. Signed-off-by: Peter Xu <peterx@redhat.com> Reviewed-by: David Hildenbrand <david@redhat.com> Message-Id: <20210817013553.30584-2-peterx@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-09-30memory: Add RAM_PROTECTED flag to skip IOMMU mappingsSean Christopherson2-1/+7
Add a new RAMBlock flag to denote "protected" memory, i.e. memory that looks and acts like RAM but is inaccessible via normal mechanisms, including DMA. Use the flag to skip protected memory regions when mapping RAM for DMA in VFIO. Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: Yang Zhong <yang.zhong@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-09-13qdev: Support marking individual buses as 'full'Peter Maydell1-1/+6
By default, QEMU will allow devices to be plugged into a bus up to the bus class's device count limit. If the user creates a device on the command line or via the monitor and doesn't explicitly specify the bus to plug it in, QEMU will plug it into the first non-full bus that it finds. This is fine in most cases, but some machines have multiple buses of a given type, some of which are dedicated to on-board devices and some of which have an externally exposed connector for user-pluggable devices. One example is I2C buses. Provide a new function qbus_mark_full() so that a machine model can mark this kind of "internal only" bus as 'full' after it has created all the devices that should be plugged into that bus. The "find a non-full bus" algorithm will then skip the internal-only bus when looking for a place to plug in user-created devices. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20210903151435.22379-2-peter.maydell@linaro.org
2021-09-06softmmu/vl: Deprecate the -sdl and -curses optionThomas Huth1-0/+3
It's not that much complicated to type "-display sdl" or "-display curses", so we should not clutter our main option name space with such simple wrapper options and rather present the users with a concise interface instead. Thus let's deprecate the "-sdl" and "-curses" wrapper options now. Message-Id: <20210825092023.81396-4-thuth@redhat.com> Reviewed-by: Gerd Hoffmann <kraxel@redhat.com> Acked-by: Peter Krempa <pkrempa@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
2021-09-06softmmu/vl: Deprecate the old grab optionsThomas Huth1-0/+6
The alt_grab and ctrl_grab parameter of the -display sdl option prevent the QAPIfication of the "sdl" part of the -display option, so we should eventually remove them. And since this feature is also rather niche anyway, we should not clutter the top-level option list with these, so let's also deprecate the "-alt-grab" and the "-ctrl-grab" options while we're at it. Once the deprecation period of "alt_grab" and "ctrl_grab" is over, we then can finally switch the -display sdl option to use QAPI internally, too. Message-Id: <20210825092023.81396-3-thuth@redhat.com> Reviewed-by: Gerd Hoffmann <kraxel@redhat.com> Acked-by: Peter Krempa <pkrempa@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
2021-09-06softmmu/vl: Add a "grab-mod" parameter to the -display sdl optionThomas Huth1-3/+12
The -display sdl option is not using QAPI internally yet, and uses hand- crafted parsing instead (see parse_display() in vl.c), which is quite ugly, since most of the other code is using the QAPIfied DisplayOption already. Unfortunately, the "alt_grab" and "ctrl_grab" use underscores in their names which has recently been forbidden in new QAPI code, so a straight conversion is not possible. While we could add some exceptions to the QAPI schema parser for this, the way these parameters have been designed was maybe a bad idea anyway: First, it's not possible to enable both parameters at the same time, thus instead of two boolean parameters it would be better to have only one multi-choice parameter instead. Second, the naming is also somewhat unfortunate since the "alt_grab" parameter is not about the ALT key, but rather about the left SHIFT key that has to be used additionally when the parameter is enabled. So instead of trying to QAPIfy "alt_grab" and "ctrl_grab", let's rather introduce an alternative to these parameters instead, a new parameter called "grab-mod" which can either be set to "lshift-lctrl-lalt" or to "rctrl". In case we ever want to support additional modes later, we can then also simply extend the list of supported strings here. Message-Id: <20210825092023.81396-2-thuth@redhat.com> Reviewed-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
2021-08-27Merge remote-tracking branch 'remotes/armbru/tags/pull-error-2021-08-26' ↵Peter Maydell1-13/+6
into staging Error reporting patches for 2021-08-26 # gpg: Signature made Thu 26 Aug 2021 16:17:05 BST # gpg: using RSA key 354BC8B3D7EB2A6B68674E5F3870B400EB918653 # gpg: issuer "armbru@redhat.com" # gpg: Good signature from "Markus Armbruster <armbru@redhat.com>" [full] # gpg: aka "Markus Armbruster <armbru@pond.sub.org>" [full] # Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867 4E5F 3870 B400 EB91 8653 * remotes/armbru/tags/pull-error-2021-08-26: vl: Clean up -smp error handling Remove superfluous ERRP_GUARD() vhost: Clean up how VhostOpts method vhost_backend_init() fails vhost: Clean up how VhostOpts method vhost_get_config() fails microvm: Drop dead error handling in microvm_machine_state_init() migration: Handle migration_incoming_setup() errors consistently migration: Unify failure check for migrate_add_blocker() whpx nvmm: Drop useless migrate_del_blocker() vfio: Avoid error_propagate() after migrate_add_blocker() i386: Never free migration blocker objects instead of sometimes vhost-scsi: Plug memory leak on migrate_add_blocker() failure multi-process: Fix pci_proxy_dev_realize() error handling spapr: Explain purpose of ->fwnmi_migration_blocker more clearly spapr: Plug memory leak when we can't add a migration blocker error: Use error_fatal to simplify obvious fatal errors (again) Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-08-26softmmu/physmem.c: Check return value from realpath()Peter Maydell1-0/+3
The realpath() function can return NULL on error, so we need to check for it to avoid crashing when we try to strstr() into it. This can happen if we run out of memory, or if /sys/ is not mounted, among other situations. Fixes: Coverity 1459913, 1460474 Fixes: ce317be98db0 ("exec: fetch the alignment of Linux devdax pmem character device nodes") Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Jingqi Liu <jingqi.liu@intel.com> Message-id: 20210812151525.31456-1-peter.maydell@linaro.org
2021-08-26softmmu/physmem.c: Remove unneeded NULL check in qemu_ram_alloc_from_fd()Peter Maydell1-1/+1
In the alignment check added to qemu_ram_alloc_from_fd() in commit ce317be98db0dfdfa, the condition includes a check that 'mr' is not NULL. This check is unnecessary because we can assume that the caller always passes us a valid MemoryRegion, and indeed later in the function we assume mr is not NULL when we pass it to file_ram_alloc() as new_block->mr. Remove it. Fixes: Coverity 1459867 Fixes: ce317be98d ("exec: fetch the alignment of Linux devdax pmem character device nodes") Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Jingqi Liu <jingqi.liu@intel.com> Message-id: 20210812150624.29139-1-peter.maydell@linaro.org
2021-08-26arch_init.h: Move QEMU_ARCH_VIRTIO_* to qdev-monitor.cPeter Maydell1-0/+9
The QEMU_ARCH_VIRTIO_* defines are used only in one file, qdev-monitor.c. Move them to that file. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 20210730105947.28215-7-peter.maydell@linaro.org
2021-08-26meson.build: Define QEMU_ARCH in config-target.hPeter Maydell1-41/+0
Instead of using an ifdef ladder in arch_init.c (which we then have to manually update every time we add or remove a target architecture), have meson.build put "#define QEMU_ARCH QEMU_ARCH_FOO" in the config-target.h file. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20210730105947.28215-5-peter.maydell@linaro.org
2021-08-26softmmu/arch_init.c: Trim down include listPeter Maydell1-7/+0
arch_init.c does very little but has a long list of #include lines. Remove all the unnecessary ones. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20210730105947.28215-4-peter.maydell@linaro.org
2021-08-26monitor: Use accel_find("kvm") instead of kvm_available()Peter Maydell1-9/+0
The kvm_available() function reports whether KVM support was compiled into the QEMU binary; it returns the value of the CONFIG_KVM define. The only place in the codebase where we use this function is in qmp_query_kvm(). Now that accelerators are based on QOM classes we can instead use accel_find("kvm") and remove the kvm_available() function. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20210730105947.28215-3-peter.maydell@linaro.org
2021-08-26softmmu: Use accel_find("xen") instead of xen_available()Peter Maydell2-12/+3
The xen_available() function is used only to produce an error for some Xen-specific command line options in QEMU binaries where Xen support was not compiled in: it just returns the value of the CONFIG_XEN define. Now that accelerators are QOM classes, we can check for "does this binary have Xen compiled in" with accel_find("xen"), and drop the xen_available() function. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20210730105947.28215-2-peter.maydell@linaro.org
2021-08-26vl: Clean up -smp error handlingMarkus Armbruster1-7/+5
The Error ** argument must be NULL, &error_abort, &error_fatal, or a pointer to a variable containing NULL. Passing an argument of the latter kind twice without clearing it in between is wrong: if the first call sets an error, it no longer points to NULL for the second call. machine_parse_property_opt() is wrong that way: it passes @errp to keyval_parse() without checking for failure, then passes it to keyval_merge(). Harmless, since the only caller passes &error_fatal. Clean up: drop the parameter, and use &error_fatal directly. Cc: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20210720125408.387910-16-armbru@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> [Rebased, conflict with commit a3c2f128306 resolved]
2021-08-26error: Use error_fatal to simplify obvious fatal errors (again)Markus Armbruster1-6/+1
We did this with scripts/coccinelle/use-error_fatal.cocci before, in commit 50beeb68094 and 007b06578ab. This commit cleans up rarer variations that don't seem worth matching with Coccinelle. Cc: Thomas Huth <thuth@redhat.com> Cc: Cornelia Huck <cornelia.huck@de.ibm.com> Cc: Peter Xu <peterx@redhat.com> Cc: Juan Quintela <quintela@redhat.com> Cc: Stefan Hajnoczi <stefanha@redhat.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Marc-André Lureau <marcandre.lureau@redhat.com> Cc: Gerd Hoffmann <kraxel@redhat.com> Cc: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20210720125408.387910-2-armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Peter Xu <peterx@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2021-08-17softmmu/physmem: fix wrong assertion in qemu_ram_alloc_internal()David Hildenbrand1-1/+0
When adding RAM_NORESERVE, we forgot to remove the old assertion when adding the updated one, most probably when reworking the patches or rebasing. We can easily crash QEMU by adding -object memory-backend-ram,id=mem0,size=500G,reserve=off to the QEMU cmdline: qemu-system-x86_64: ../softmmu/physmem.c:2146: qemu_ram_alloc_internal: Assertion `(ram_flags & ~(RAM_SHARED | RAM_RESIZEABLE | RAM_PREALLOC)) == 0' failed. Fix it by removing the old assertion. Fixes: 8dbe22c6868b ("memory: Introduce RAM_NORESERVE and wire it up in qemu_ram_mmap()") Reviewed-by: Peter Xu <peterx@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Pankaj Gupta <pankaj.gupta@ionos.com> Signed-off-by: David Hildenbrand <david@redhat.com> Message-id: 20210805092350.31195-1-david@redhat.com Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Peter Xu <peterx@redhat.com> Cc: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: David Hildenbrand <david@redhat.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-07-30vl: stop recording -smp in QemuOptsPaolo Bonzini1-8/+14
-readconfig is still recording SMP options in QemuOpts instead of using machine_opts_dict. This means that SMP options from -readconfig are ignored. Just stop using QemuOpts for -smp, making it return false for is_qemuopts_group. Configuration files will merge the values in machine_opts_dict using the new function machine_merge_property. At the same time, fix -mem-prealloc which looked at QemuOpts to find the number of guest CPUs, which it used as the default number of preallocation threads. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-07-30vl: introduce machine_merge_propertyPaolo Bonzini1-6/+19
It will be used to parse smp-opts config groups from configuration files. The point to note is that it does not steal a reference from the caller. This is better because this function will be called from qemu_config_foreach's callback; qemu_config_foreach does not cede its reference to the qdict to the callback, and wants to free it. To balance that extra reference, machine_parse_property_opt now needs a qobject_unref. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-07-27vl: Don't continue after -smp help.Markus Armbruster1-1/+1
We continue after -smp help: $ qemu-system-x86_64 -smp help -display none -monitor stdio smp-opts options: cores=<num> cpus=<num> dies=<num> maxcpus=<num> sockets=<num> threads=<num> QEMU 6.0.50 monitor - type 'help' for more information (qemu) Other options, such as -object help and -device help, don't. Adjust -smp not to continue either. Cc: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20210720125408.387910-17-armbru@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Pankaj Gupta <pankaj.gupta@ionos.com> Acked-by: Michael S. Tsirkin <mst@redhat.com>
2021-07-23Merge remote-tracking branch 'remotes/kraxel/tags/vga-20210723-pull-request' ↵Peter Maydell1-0/+1
into staging vga: fixes for qxl and virtio-gpu # gpg: Signature made Fri 23 Jul 2021 06:54:34 BST # gpg: using RSA key A0328CFFB93A17A79901FE7D4CB6D8EED3E87138 # gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>" [full] # gpg: aka "Gerd Hoffmann <gerd@kraxel.org>" [full] # gpg: aka "Gerd Hoffmann (private) <kraxel@gmail.com>" [full] # Primary key fingerprint: A032 8CFF B93A 17A7 9901 FE7D 4CB6 D8EE D3E8 7138 * remotes/kraxel/tags/vga-20210723-pull-request: hw/display: fix virgl reset regression vl: add virtio-vga-gl to the default_list hw/display: fail early when multiple virgl devices are requested Revert "qxl: add migration blocker to avoid pre-save assert" qxl: remove assert in qxl_pre_save. hw/display/virtio-gpu: Fix memory leak (CID 1453811) Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-07-22Merge remote-tracking branch 'remotes/bonzini-gitlab/tags/for-upstream' into ↵Peter Maydell1-0/+1
staging Bugfixes. # gpg: Signature made Thu 22 Jul 2021 14:11:27 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: configure: Let --without-default-features disable vhost-kernel and vhost-vdpa configure: Fix the default setting of the "xen" feature configure: Allow vnc to get disabled with --without-default-features configure: Fix --without-default-features propagation to meson meson: fix dependencies for modinfo configure: Drop obsolete check for the alloc_size attribute target/i386: Added consistency checks for EFER target/i386: Added consistency checks for CR4 target/i386: Added V_INTR_PRIO check to virtual interrupts qemu-config: restore "machine" in qmp_query_command_line_options() usb: fix usb-host dependency check chardev-spice: add missing module_obj directive vl: Parse legacy default_machine_opts qemu-config: fix memory leak on ferror() qemu-config: never call the callback after an error, fix leak Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-07-22vl: add virtio-vga-gl to the default_listMarc-André Lureau1-0/+1
Do not instantiate an extra default VGA device if -device virtio-vga-gl is provided. Related to commit b36eb8860f8f4a9c6f131c3fd380116a3017e022 ("virtio-gpu: add virtio-vga-gl") Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20210701062421.721414-1-marcandre.lureau@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2021-07-21qemu/atomic: Add aligned_{int64,uint64}_t typesRichard Henderson1-1/+1
Use it to avoid some clang-12 -Watomic-alignment errors, forcing some structures to be aligned and as a pointer when we have ensured that the address is aligned. Tested-by: Cole Robinson <crobinso@redhat.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-07-20vl: Parse legacy default_machine_optsJason Andryuk1-0/+1
qemu can't start a xen vm after commit d8fb7d0969d5 "vl: switch -M parsing to keyval" with: $ ./qemu-system-i386 -M xenfv Unexpected error in object_property_find_err() at ../qom/object.c:1298: qemu-system-i386: Property 'xenfv-3.1-machine.accel' not found Aborted (core dumped) The default_machine_opts handling doesn't process the legacy machine options like "accel". Call qemu_apply_legacy_machine_options to provide the legacy handling. Signed-off-by: Jason Andryuk <jandryuk@gmail.com> Message-Id: <20210713021552.19110-1-jandryuk@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-07-14seccomp: don't block getters for resource control syscallsDaniel P. Berrangé1-6/+0
Recent GLibC calls sched_getaffinity in code paths related to malloc and when QEMU blocks access, it sends it off into a bad codepath resulting in stack exhaustion[1]. The GLibC bug is being fixed[2], but none the less, GLibC has valid reasons to want to use sched_getaffinity. It is not unreasonable for code to want to run many resource syscalls for information gathering, so it is a bit too harsh for QEMU to block them. [1] https://bugzilla.redhat.com/show_bug.cgi?id=1975693 [2] https://sourceware.org/pipermail/libc-alpha/2021-June/128271.html Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Acked-by: Eduardo Otubo <otubo@redhat.com> Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2021-07-11Merge remote-tracking branch 'remotes/bonzini-gitlab/tags/for-upstream' into ↵Peter Maydell1-21/+16
staging * More SVM fixes (Lara) * Module annotation database (Gerd) * Memory leak fixes (myself) * Build fixes (myself) * --with-devices-* support (Alex) # gpg: Signature made Fri 09 Jul 2021 17:23:52 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: (48 commits) meson: Use input/output for entitlements target configure: allow the selection of alternate config in the build configs: rename default-configs to configs and reorganise hw/arm: move CONFIG_V7M out of default-devices hw/arm: add dependency on OR_IRQ for XLNX_VERSAL meson: Introduce target-specific Kconfig meson: switch function tests from compilation to linking vl: fix leak of qdict_crumple return value target/i386: fix exceptions for MOV to DR target/i386: Added DR6 and DR7 consistency checks target/i386: Added MSRPM and IOPM size check monitor/tcg: move tcg hmp commands to accel/tcg, register them dynamically usb: build usb-host as module monitor/usb: register 'info usbhost' dynamically usb: drop usb_host_dev_is_scsi_storage hook monitor: allow register hmp commands accel: build tcg modular accel: add tcg module annotations accel: build qtest modular accel: add qtest module annotations ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-07-11Merge remote-tracking branch ↵Peter Maydell3-7/+11
'remotes/vivier2/tags/trivial-branch-for-6.1-pull-request' into staging Trivial patches pull request 20210709 # gpg: Signature made Fri 09 Jul 2021 21:26:52 BST # gpg: using RSA key CD2F75DDC8E3A4DC2E4F5173F30C38BD3F2FBE3C # gpg: issuer "laurent@vivier.eu" # gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" [full] # gpg: aka "Laurent Vivier <laurent@vivier.eu>" [full] # gpg: aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" [full] # Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F 5173 F30C 38BD 3F2F BE3C * remotes/vivier2/tags/trivial-branch-for-6.1-pull-request: util/guest-random: Fix size arg to tail memcpy migration: fix typo in mig_throttle_guest_down comment target/xtensa/xtensa-semi: Fix compilation problem on Haiku hw/virtio: Document *_should_notify() are called within rcu_read_lock() misc: Remove redundant new line in perror() virtiofsd: Add missing newline in error message misc: Fix "havn't" typo memory: Display MemoryRegion name in read/write ops trace events qemu-option: Drop dead assertion Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-07-09misc: Remove redundant new line in perror()Li Zhijian1-1/+1
Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20210706094433.1766952-1-lizhijian@cn.fujitsu.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-07-09memory: Display MemoryRegion name in read/write ops trace eventsPhilippe Mathieu-Daudé2-6/+10
MemoryRegion names is cached on first call to memory_region_name(), so displaying the name is trace events is cheap. Add it for read / write ops. Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20210307074833.143106-1-f4bug@amsat.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-07-09vl: fix leak of qdict_crumple return valuePaolo Bonzini1-4/+9
Coverity reports that qemu_parse_config_group is returning without unrefing the "crumpled" dictionary in case its top level item is a list. But actually the contract with qemu_record_config_group is the same as for qemu_parse_config_group itself: if those function need to stash the dictionary they get, they have to take a reference themselves (currently this is never the case for either function). Therefore, just add an unconditional qobject_unref(crumpled) to qemu_parse_config_group. Reported-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-07-09modules: check arch and block load on mismatchGerd Hoffmann1-0/+3
Add module_allow_arch() to set the target architecture. In case a module is limited to some arch verify arches match and ignore the module if not. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Jose R. Ziviani <jziviani@suse.de> Message-Id: <20210624103836.2382472-19-kraxel@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-07-09modules: use modinfo for qemu opts loadGerd Hoffmann1-17/+0
Use module database to figure which module adds given QemuOpts group. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Jose R. Ziviani <jziviani@suse.de> Message-Id: <20210624103836.2382472-17-kraxel@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-07-09modules: generate modinfo.cGerd Hoffmann1-0/+4
Add script to generate C source with a small database containing the module meta-data. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Jose R. Ziviani <jziviani@suse.de> Message-Id: <20210624103836.2382472-4-kraxel@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-07-08softmmu/physmem: Extend ram_block_discard_(require|disable) by two discard typesDavid Hildenbrand1-6/+48
We want to separate the two cases whereby we discard ram - uncoordinated: e.g., virito-balloon - coordinated: e.g., virtio-mem coordinated via the RamDiscardManager Reviewed-by: Pankaj Gupta <pankaj.gupta@cloud.ionos.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: Alex Williamson <alex.williamson@redhat.com> Cc: Dr. David Alan Gilbert <dgilbert@redhat.com> Cc: Igor Mammedov <imammedo@redhat.com> Cc: Pankaj Gupta <pankaj.gupta.linux@gmail.com> Cc: Peter Xu <peterx@redhat.com> Cc: Auger Eric <eric.auger@redhat.com> Cc: Wei Yang <richard.weiyang@linux.alibaba.com> Cc: teawater <teawaterz@linux.alibaba.com> Cc: Marek Kedzierski <mkedzier@redhat.com> Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20210413095531.25603-12-david@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2021-07-08softmmu/physmem: Don't use atomic operations in ↵David Hildenbrand1-31/+39
ram_block_discard_(disable|require) We have users in migration context that don't hold the BQL (when finishing migration). To prepare for further changes, use a dedicated mutex instead of atomic operations. Keep using qatomic_read ("READ_ONCE") for the functions that only extract the current state (e.g., used by virtio-balloon), locking isn't necessary. While at it, split up the counter into two variables to make it easier to understand. Suggested-by: Peter Xu <peterx@redhat.com> Reviewed-by: Peter Xu <peterx@redhat.com> Reviewed-by: Pankaj Gupta <pankaj.gupta@cloud.ionos.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: Alex Williamson <alex.williamson@redhat.com> Cc: Dr. David Alan Gilbert <dgilbert@redhat.com> Cc: Igor Mammedov <imammedo@redhat.com> Cc: Pankaj Gupta <pankaj.gupta.linux@gmail.com> Cc: Peter Xu <peterx@redhat.com> Cc: Auger Eric <eric.auger@redhat.com> Cc: Wei Yang <richard.weiyang@linux.alibaba.com> Cc: teawater <teawaterz@linux.alibaba.com> Cc: Marek Kedzierski <mkedzier@redhat.com> Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20210413095531.25603-11-david@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2021-07-08memory: Helpers to copy/free a MemoryRegionSectionDavid Hildenbrand1-0/+27
In case one wants to create a permanent copy of a MemoryRegionSections, one needs access to flatview_ref()/flatview_unref(). Instead of exposing these, let's just add helpers to copy/free a MemoryRegionSection and properly adjust references. Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: Alex Williamson <alex.williamson@redhat.com> Cc: Dr. David Alan Gilbert <dgilbert@redhat.com> Cc: Igor Mammedov <imammedo@redhat.com> Cc: Pankaj Gupta <pankaj.gupta.linux@gmail.com> Cc: Peter Xu <peterx@redhat.com> Cc: Auger Eric <eric.auger@redhat.com> Cc: Wei Yang <richard.weiyang@linux.alibaba.com> Cc: teawater <teawaterz@linux.alibaba.com> Cc: Marek Kedzierski <mkedzier@redhat.com> Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20210413095531.25603-3-david@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
generated by cgit v1.1 at 2024-12-29 10:45:05 +0000