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2018-10-24hostmem-file: fixed the memory leak while get pmem path.Zhang Yi
object_get_canonical_path_component() returns a string which must be freed using g_free(). Reported-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Zhang Yi <yi.z.zhang@linux.intel.com> Message-Id: <7328fb16c394eaf5d65437d11c2a9343647b6d3d.1535471899.git.yi.z.zhang@linux.intel.com> Reviewed-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2018-10-05hostmem: add some properties descriptionMarc-André Lureau
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
2018-10-02hostmem-file: make available memory-backend-file on POSIX-based hostsHikaru Nishida
Before this change, memory-backend-file object is valid for Linux hosts only because hostmem-file.c is compiled only on Linux hosts. However, other POSIX-based hosts (such as macOS) can support memory-backend-file object in the same way as on Linux hosts. This patch makes hostmem-file.c and related functions to be compiled on all POSIX-based hosts to make available memory-backend-file on them. Signed-off-by: Hikaru Nishida <hikarupsp@gmail.com> Message-Id: <20180924123205.29651-1-hikarupsp@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-10-02hostmem-memfd: add checks before adding hostmem-memfd & propertiesMarc-André Lureau
Run some memfd-related checks before registering hostmem-memfd & various properties. This will help libvirt to figure out what the host is supposed to be capable of. qemu_memfd_check() is changed to a less optimized version, since it is used with various flags, it no longer caches the result. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20180906161415.8543-1-marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-08-10hostmem-file: add the 'pmem' optionJunyan He
When QEMU emulates vNVDIMM labels and migrates vNVDIMM devices, it needs to know whether the backend storage is a real persistent memory, in order to decide whether special operations should be performed to ensure the data persistence. This boolean option 'pmem' allows users to specify whether the backend storage of memory-backend-file is a real persistent memory. If 'pmem=on', QEMU will set the flag RAM_PMEM in the RAM block of the corresponding memory region. If 'pmem' is set while lack of libpmem support, a error is generated. Signed-off-by: Junyan He <junyan.he@intel.com> Signed-off-by: Haozhong Zhang <haozhong.zhang@intel.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-08-10memory, exec: switch file ram allocation functions to 'flags' parametersJunyan He
As more flag parameters besides the existing 'share' are going to be added to following functions memory_region_init_ram_from_file qemu_ram_alloc_from_fd qemu_ram_alloc_from_file let's switch them to use the 'flags' parameters so as to ease future flag additions. The existing 'share' flag is converted to the RAM_SHARED bit in ram_flags, and other flag bits are ignored by above functions right now. Signed-off-by: Junyan He <junyan.he@intel.com> Signed-off-by: Haozhong Zhang <haozhong.zhang@intel.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2018-07-30backends/cryptodev: remove dead codeJay Zhou
Fix Coverity issue 1390600. Signed-off-by: Jay Zhou <jianjay.zhou@huawei.com> Message-Id: <1524894864-7492-1-git-send-email-jianjay.zhou@huawei.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-06-28hostmem: drop error variable from host_memory_backend_get_memory()David Hildenbrand
Unused, so let's remove it. Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Reviewed-by: Igor Mammedov <imammedo@redhat.com> Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20180619134141.29478-8-david@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-05-24vhost-user: introduce shared vhost-user stateTiwei Bie
When multi queue is enabled e.g. for a virtio-net device, each queue pair will have a vhost_dev, and the only thing shared between vhost devs currently is the chardev. This patch introduces a vhost-user state structure which will be shared by all vhost devs of the same virtio device. Signed-off-by: Tiwei Bie <tiwei.bie@intel.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-05-09memdev: remove "id" propertyPaolo Bonzini
The "id" property is unnecessary and can be replaced simply with object_get_canonical_path_component. This patch mostly undoes commit e1ff3c67e8 ("monitor: fix qmp/hmp query-memdev not reporting IDs of memory backends", 2017-01-12). Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-04-27Add host_memory_backend_pagesize() helperDavid Gibson
There are a couple places (one generic, one target specific) where we need to get the host page size associated with a particular memory backend. I have some upcoming code which will add another place which wants this. So, for convenience, add a helper function to calculate this. host_memory_backend_pagesize() returns the host pagesize for a given HostMemoryBackend object. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Reviewed-by: Greg Kurz <groug@kaod.org> Acked-by: Paolo Bonzini <pbonzini@redhat.com>
2018-03-02qapi: Move qapi-schema.json to qapi/, rename generated filesMarkus Armbruster
Move qapi-schema.json to qapi/, so it's next to its modules, and all files get generated to qapi/, not just the ones generated for modules. Consistently name the generated files qapi-MODULE.EXT: qmp-commands.[ch] become qapi-commands.[ch], qapi-event.[ch] become qapi-events.[ch], and qmp-introspect.[ch] become qapi-introspect.[ch]. This gets rid of the temporary hacks in scripts/qapi/commands.py, scripts/qapi/events.py, and scripts/qapi/common.py. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20180211093607.27351-28-armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com> [eblake: Fix trailing dot in tpm.c, undo temporary hack for OSX toolchain] Signed-off-by: Eric Blake <eblake@redhat.com>
2018-03-02Include less of the generated modular QAPI headersMarkus Armbruster
In my "build everything" tree, a change to the types in qapi-schema.json triggers a recompile of about 4800 out of 5100 objects. The previous commit split up qmp-commands.h, qmp-event.h, qmp-visit.h, qapi-types.h. Each of these headers still includes all its shards. Reduce compile time by including just the shards we actually need. To illustrate the benefits: adding a type to qapi/migration.json now recompiles some 2300 instead of 4800 objects. The next commit will improve it further. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20180211093607.27351-24-armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> [eblake: rebase to master] Signed-off-by: Eric Blake <eblake@redhat.com>
2018-03-01cryptodev-vhost-user: set the key lengthGonglei
Signed-off-by: Gonglei <arei.gonglei@huawei.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-03-01cryptodev-vhost-user: add crypto session handlerGonglei
Introduce two vhost-user meassges: VHOST_USER_CREATE_CRYPTO_SESSION and VHOST_USER_CLOSE_CRYPTO_SESSION. At this point, the QEMU side support crypto operation in cryptodev host-user backend. Signed-off-by: Gonglei <arei.gonglei@huawei.com> Signed-off-by: Longpeng(Mike) <longpeng2@huawei.com> Signed-off-by: Jay Zhou <jianjay.zhou@huawei.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-03-01cryptodev: add vhost supportGonglei
Impliment the vhost-crypto's funtions, such as startup, stop and notification etc. Introduce an enum QCryptoCryptoDevBackendOptionsType in order to identify the cryptodev vhost backend is vhost-user or vhost-kernel-module (If exist). At this point, the cryptdoev-vhost-user works. Signed-off-by: Gonglei <arei.gonglei@huawei.com> Signed-off-by: Longpeng(Mike) <longpeng2@huawei.com> Signed-off-by: Jay Zhou <jianjay.zhou@huawei.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-03-01cryptodev: add vhost-user as a new cryptodev backendGonglei
Usage: -chardev socket,id=charcrypto0,path=/path/to/your/socket -object cryptodev-vhost-user,id=cryptodev0,chardev=charcrypto0 -device virtio-crypto-pci,id=crypto0,cryptodev=cryptodev0 Signed-off-by: Gonglei <arei.gonglei@huawei.com> Signed-off-by: Longpeng(Mike) <longpeng2@huawei.com> Signed-off-by: Jay Zhou <jianjay.zhou@huawei.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-02-19mem: add share parameter to memory-backend-ramMarcel Apfelbaum
Currently only file backed memory backend can be created with a "share" flag in order to allow sharing guest RAM with other processes in the host. Add the "share" flag also to RAM Memory Backend in order to allow remapping parts of the guest RAM to different host virtual addresses. This is needed by the RDMA devices in order to remap non-contiguous QEMU virtual addresses to a contiguous virtual address range. Moved the "share" flag to the Host Memory base class, modified phys_mem_alloc to include the new parameter and a new interface memory_region_init_ram_shared_nomigrate. There are no functional changes if the new flag is not used. Reviewed-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Marcel Apfelbaum <marcel@redhat.com>
2018-02-09Drop superfluous includes of qapi/qmp/qerror.hMarkus Armbruster
Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20180201111846.21846-6-armbru@redhat.com>
2018-02-09Drop superfluous includes of qapi-types.h and test-qapi-types.hMarkus Armbruster
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20180201111846.21846-4-armbru@redhat.com>
2018-02-07Add memfd based hostmemMarc-André Lureau
Add a new memory backend, similar to hostmem-file, except that it doesn't need to create files. It also enforces memory sealing. This backend is mainly useful for sharing the memory with other processes. Note that Linux supports transparent huge-pages of shmem/memfd memory since 4.8. It is relatively easier to set up THP than a dedicate hugepage mount point by using "madvise" in /sys/kernel/mm/transparent_hugepage/shmem_enabled. Since 4.14, memfd allows to set hugetlb requirement explicitly. Pending for merge in 4.16 is memfd sealing support for hugetlb backed memory. Usage: -object memory-backend-memfd,id=mem1,size=1G Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20180201132757.23063-5-marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-01-29tpm: report backend request errorMarc-André Lureau
Use an Error** for request to let the caller handle error reporting. This will also allow to inform the frontend of a backend error. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Stefan Berger <stefanb@linux.vnet.ibm.com> Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
2018-01-29tpm: replace GThreadPool with AIO threadpoolMarc-André Lureau
The TPM backend uses a GThreadPool to handle IO in a seperate thread. However, GThreadPool isn't integrated with Qemu main loops, making it unnecessarily complicated to deal with. Qemu has a AIO threadpool, that is better integrated with loops and various IO functions, provides completion BH by default etc. Remove the only user of GThreadPool from qemu, use AIO threadpool. Note that the backend: - no longer accepts queing multiple requests (unneeded so far) - increase ref to itself when handling a command, for extra safety - tpm_backend_thread_end() is renamed tpm_backend_finish_sync() and will wait for completion of BH (request_completed), which will help migration handling. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Stefan Berger <stefanb@linux.vnet.ibm.com> Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
2018-01-19hostmem-file: add "align" optionHaozhong Zhang
When mmap(2) the backend files, QEMU uses the host page size (getpagesize(2)) by default as the alignment of mapping address. However, some backends may require alignments different than the page size. For example, mmap a device DAX (e.g., /dev/dax0.0) on Linux kernel 4.13 to an address, which is 4K-aligned but not 2M-aligned, fails with a kernel message like [617494.969768] dax dax0.0: qemu-system-x86: dax_mmap: fail, unaligned vma (0x7fa37c579000 - 0x7fa43c579000, 0x1fffff) Because there is no common approach to get such alignment requirement, we add the 'align' option to 'memory-backend-file', so that users or management utils, which have enough knowledge about the backend, can specify a proper alignment via this option. Signed-off-by: Haozhong Zhang <haozhong.zhang@intel.com> Message-Id: <20171211072806.2812-2-haozhong.zhang@intel.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> [ehabkost: fixed typo, fixed error_setg() format string] Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2017-12-14tpm: tpm_emulator: get and set buffer size of deviceStefan Berger
Convert the tpm_emulator backend to get the current buffer size of the external device and set it to the buffer size that the frontend (TIS) requests. Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
2017-12-14tpm: Move getting TPM buffer size to backendsStefan Berger
Rather than setting the size of the TPM buffer in the front-end, query the backend for the size of the buffer. In this patch we just move the hard-coded buffer size of 4096 to the backends. Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
2017-12-14tpm-be: update optional function pointersMarc-André Lureau
QEMU code doesn't generally have assert() for mandatory callbacks/function pointers, probably because the crash is pretty obvious. Document the methods instead of going into the code. Make get_tpm_options() mandatory to implement (since all backend implementation have it). Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Stefan Berger <stefanb@linux.vnet.ibm.com> Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
2017-12-14tpm: remove unused opened codeMarc-André Lureau
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Stefan Berger <stefanb@linux.vnet.ibm.com> Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
2017-12-14tpm-be: ask model to the TPM interfaceMarc-André Lureau
No need to store the mode in the backend, or to let the frontend set it itself. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Stefan Berger <stefanb@linux.vnet.ibm.com> Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
2017-12-14tpm-be: report error instead of front-endMarc-André Lureau
Backend can give more accurate error description, and lift out the job from the frontend. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Stefan Berger <stefanb@linux.vnet.ibm.com> Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
2017-12-14tpm-be: call request_completed() out of threadMarc-André Lureau
Lift from the backend implementation the responsability to call the request_completed() callback outside of thread context. This also simplify frontend/interface work, as they no longer need to care whether the callback is called from a different thread. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Stefan Berger <stefanb@linux.vnet.ibm.com> Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
2017-12-14tpm-backend: store TPMIf interface, improve backend_init()Marc-André Lureau
Store the TPM interface, the actual object may be different from TPMState. Keep a reference on the interface, and check the backend wasn't already initialized. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Stefan Berger <stefanb@linux.vnet.ibm.com> Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
2017-12-14tpm: move TpmIf in include/sysemu/tpm.hMarc-André Lureau
This is a better location than hw/tpm, since we are going to use the interface from outside hw/tpm. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Stefan Berger <stefanb@linux.vnet.ibm.com> Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
2017-10-19tpm: move recv_data_callback to TPM interfaceMarc-André Lureau
Simplify the TPM backend setup, move callback to TPM interface. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Stefan Berger <stefanb@linux.vnet.ibm.com> Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
2017-10-19tpm: add a QOM TPM interfaceMarc-André Lureau
This will simplify backend / interface objects relationship, so the frontend interface will simply have to implement the TPM QOM interface. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Stefan Berger <stefanb@linux.vnet.ibm.com> Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
2017-10-19tpm: add TPMBackendCmd to hold the request stateMarc-André Lureau
This simplifies a bit locality handling, and argument passing, and could pave the way to queuing requests (if that makes sense). Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Stefan Berger <stefanb@linux.vnet.ibm.com> Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
2017-10-19tpm: remove unused TPMBackendCmdMarc-André Lureau
There is only handling of request so far in both backends. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Stefan Berger <stefanb@linux.vnet.ibm.com> Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
2017-10-19tpm: remove init() class methodMarc-André Lureau
No backend use it. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Stefan Berger <stefanb@linux.vnet.ibm.com> Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
2017-10-19tpm: remove TPMDriverOpsMarc-André Lureau
Use TPMBackendClass to hold class methods/fields. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Stefan Berger <stefanb@linux.vnet.ibm.com> Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
2017-10-13tpm-backend: Move realloc_buffer() implementation to tpm-tis modelAmarnath Valluri
buffer reallocation is very unlikely to be backend specific. Hence move inside the tis. Signed-off-by: Amarnath Valluri <amarnath.valluri@intel.com> Reviewed-by: Stefan Berger <stefanb@linux.vnet.ibm.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
2017-10-13tpm-backend: Add new API to read backend TpmInfoAmarnath Valluri
TPM configuration options are backend implementation details and shall not be part of base TPMBackend object, and these shall not be accessed directly outside of the class, hence added a new interface method, get_tpm_options() to TPMDriverOps., which shall be implemented by the derived classes to return configured tpm options. A new tpm backend api - tpm_backend_query_tpm() which uses _get_tpm_options() to prepare TpmInfo. Signed-off-by: Amarnath Valluri <amarnath.valluri@intel.com> Reviewed-by: Stefan Berger <stefanb@linux.vnet.ibm.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
2017-10-13tpm-backend: Made few interface methods optionalAmarnath Valluri
This allows backend implementations left optional interface methods. For mandatory methods assertion checks added. Took the opportunity to remove unused methods: - tpm_backend_get_desc() - TPMDriverOps->handle_startup_error Signed-off-by: Amarnath Valluri <amarnath.valluri@intel.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Stefan Berger<stefanb@linux.vnet.ibm.com> Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
2017-10-13tpm-backend: Initialize and free data members in it's own methodsAmarnath Valluri
Initialize and free TPMBackend data members in it's own instance_init() and instance_finalize methods. Took the opportunity to remove unneeded destroy() method from TpmDriverOps interface as TPMBackend is a Qemu Object, we can use object_unref() inplace of tpm_backend_destroy() to free the backend object, hence removed destroy() from TPMDriverOps interface. Signed-off-by: Amarnath Valluri <amarnath.valluri@intel.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Stefan Berger <stefanb@linux.vnet.ibm.com> Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
2017-10-13tpm-backend: Move thread handling inside TPMBackendAmarnath Valluri
Move thread handling inside TPMBackend, this way backend implementations need not to maintain their own thread life cycle, instead they needs to implement 'handle_request()' class method that always been called from a thread. This change made tpm_backend_int.h kind of useless, hence removed it. Signed-off-by: Amarnath Valluri <amarnath.valluri@intel.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Stefan Berger <stefanb@linux.vnet.ibm.com> Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
2017-09-19hostmem-file: Add "discard-data" optionEduardo Habkost
The new option can be used to indicate that the file contents can be destroyed and don't need to be flushed to disk when QEMU exits or when the memory backend object is removed. Internally, it will trigger a madvise(MADV_REMOVE) call when the memory backend is removed. Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Message-Id: <20170824192315.5897-4-ehabkost@redhat.com> [ehabkost: fixup: improved documentation] Reviewed-by: Daniel P. Berrange <berrange@redhat.com> Tested-by: Zack Cornelius <zack.cornelius@kove.net> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2017-09-04Merge remote-tracking branch 'remotes/armbru/tags/pull-qapi-2017-09-01-v3' ↵Peter Maydell
into staging QAPI patches for 2017-09-01 # gpg: Signature made Mon 04 Sep 2017 12:30:31 BST # gpg: using RSA key 0x3870B400EB918653 # gpg: Good signature from "Markus Armbruster <armbru@redhat.com>" # gpg: aka "Markus Armbruster <armbru@pond.sub.org>" # Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867 4E5F 3870 B400 EB91 8653 * remotes/armbru/tags/pull-qapi-2017-09-01-v3: (47 commits) qapi: drop the sentinel in enum array qapi: Change data type of the FOO_lookup generated for enum FOO qapi: Convert indirect uses of FOO_lookup[...] to qapi_enum_lookup() qapi: Mechanically convert FOO_lookup[...] to FOO_str(...) qapi: Generate FOO_str() macro for QAPI enum FOO qapi: Avoid unnecessary use of enum lookup table's sentinel qapi: Use qapi_enum_parse() in input_type_enum() crypto: Use qapi_enum_parse() in qcrypto_block_luks_name_lookup() quorum: Use qapi_enum_parse() in quorum_open() block: Use qemu_enum_parse() in blkdebug_debug_breakpoint() hmp: Use qapi_enum_parse() in hmp_migrate_set_parameter() hmp: Use qapi_enum_parse() in hmp_migrate_set_capability() tpm: Clean up model registration & lookup tpm: Clean up driver registration & lookup qapi: Drop superfluous qapi_enum_parse() parameter max qapi: Update qapi-code-gen.txt examples to match current code qapi-schema: Improve section headings qapi-schema: Move queries from common.json to qapi-schema.json qapi-schema: Make block-core.json self-contained qapi-schema: Fold event.json back into qapi-schema.json ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-09-04qapi: Change data type of the FOO_lookup generated for enum FOOMarc-André Lureau
Currently, a FOO_lookup is an array of strings terminated by a NULL sentinel. A future patch will generate enums with "holes". NULL-termination will cease to work then. To prepare for that, store the length in the FOO_lookup by wrapping it in a struct and adding a member for the length. The sentinel will be dropped next. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20170822132255.23945-13-marcandre.lureau@redhat.com> [Basically redone] Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <1503564371-26090-16-git-send-email-armbru@redhat.com> [Rebased]
2017-09-04qapi: Mechanically convert FOO_lookup[...] to FOO_str(...)Markus Armbruster
Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <1503564371-26090-14-git-send-email-armbru@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
2017-09-01qom: Remove unused errp parameter from can_be_deleted()Eduardo Habkost
The errp argument is ignored by all implementations of the method, and user_creatable_del() would break if any implementation set an error (because it calls error_setg(errp) if the function returns false). Remove the unused parameter. Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Message-Id: <20170829220337.23427-1-ehabkost@redhat.com> Reviewed-by: Gonglei <arei.gonglei@huawei.com> Reviewed-by: Igor Mammedov <imammedo@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2017-07-14memory: Rename memory_region_init_ram() to memory_region_init_ram_nomigrate()Peter Maydell
Rename memory_region_init_ram() to memory_region_init_ram_nomigrate(). This leaves the way clear for us to provide a memory_region_init_ram() which does handle migration. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1499438577-7674-4-git-send-email-peter.maydell@linaro.org
generated by cgit v1.2.3 (git 2.26.2) at 2024-11-25 05:35:42 +0000