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2022-12-16Replace use of qdev_reset_all() with device_cold_reset()Peter Maydell1-1/+1
The legacy function qdev_reset_all() performs a recursive reset, starting from a qdev. However, it does not permit any of the devices in the tree to use three-phase reset, because device reset goes through the device_legacy_reset() function that only calls the single DeviceClass::reset method. Switch to using the device_cold_reset() function instead. This also performs a recursive reset, where first the children are reset and then finally the parent, but it uses the new (...in 2020...) Resettable mechanism, which supports both the old style single-reset method and also the new 3-phase reset handling. This commit changes the five remaining uses of this function. Commit created with: sed -i -e 's/qdev_reset_all/device_cold_reset/g' hw/i386/xen/xen_platform.c hw/input/adb.c hw/remote/vfio-user-obj.c hw/s390x/s390-virtio-ccw.c hw/usb/dev-uas.c Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-12-14error: Drop a few superfluous ERRP_GUARD()Markus Armbruster1-1/+0
include/qapi/error.h on ERRP_GUARD(): * It must be used when the function dereferences @errp or passes * @errp to error_prepend(), error_vprepend(), or error_append_hint(). * It is safe to use even when it's not needed, but please avoid * cluttering the source with useless code. Clean up some of this clutter. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20221121085054.683122-3-armbru@redhat.com>
2022-11-07msix: Assert that specified vector is in rangeAkihiko Odaki1-8/+1
There were several different ways to deal with the situation where the vector specified for a msix function is out of bound: - early return a function and keep progresssing - propagate the error to the caller - mark msix unusable - assert it is in bound - just ignore An out-of-bound vector should not be specified if the device implementation is correct so let msix functions always assert that the specified vector is in range. An exceptional case is virtio-pci, which allows the guest to configure vectors. For virtio-pci, it is more appropriate to introduce its own checks because it is sometimes too late to check the vector range in msix functions. Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com> Message-Id: <20220829083524.143640-1-akihiko.odaki@daynix.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Yuval Shaia <yuval.shaia.ml@gmail.com> Signed-off-by: Akihiko Odaki &lt;<a href="mailto:akihiko.odaki@daynix.com" target="_blank">akihiko.odaki@daynix.com</a>&gt;<br>
2022-10-04Use g_new() & friends where that makes obvious senseMarkus Armbruster1-1/+1
g_new(T, n) is neater than g_malloc(sizeof(T) * n). It's also safer, for two reasons. One, it catches multiplication overflowing size_t. Two, it returns T * rather than void *, which lets the compiler catch more type errors. This commit only touches allocations with size arguments of the form sizeof(T). Patch created mechanically with: $ spatch --in-place --sp-file scripts/coccinelle/use-g_new-etc.cocci \ --macro-file scripts/cocci-macro-file.h FILES... The previous iteration was commit a95942b50c. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Message-Id: <20220923084254.4173111-1-armbru@redhat.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-06-15vfio-user: handle reset of remote deviceJagannathan Raman1-0/+20
Adds handler to reset a remote device Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com> Signed-off-by: John G Johnson <john.g.johnson@oracle.com> Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 112eeadf3bc4c6cdb100bc3f9a6fcfc20b467c1b.1655151679.git.jag.raman@oracle.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2022-06-15vfio-user: handle device interruptsJagannathan Raman3-4/+178
Forward remote device's interrupts to the guest Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com> Signed-off-by: John G Johnson <john.g.johnson@oracle.com> Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Message-id: 9523479eaafe050677f4de2af5dd0df18c27cfd9.1655151679.git.jag.raman@oracle.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2022-06-15vfio-user: handle PCI BAR accessesJagannathan Raman2-0/+193
Determine the BARs used by the PCI device and register handlers to manage the access to the same. Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com> Signed-off-by: John G Johnson <john.g.johnson@oracle.com> Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 3373e10b5be5f42846f0632d4382466e1698c505.1655151679.git.jag.raman@oracle.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2022-06-15vfio-user: handle DMA mappingsJagannathan Raman3-0/+62
Define and register callbacks to manage the RAM regions used for device DMA Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com> Signed-off-by: John G Johnson <john.g.johnson@oracle.com> Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: faacbcd45c4d02c591f0dbfdc19041fbb3eae7eb.1655151679.git.jag.raman@oracle.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2022-06-15vfio-user: IOMMU support for remote deviceJagannathan Raman3-1/+144
Assign separate address space for each device in the remote processes. Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com> Signed-off-by: John G Johnson <john.g.johnson@oracle.com> Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: afe0b0a97582cdad42b5b25636a29c523265a10a.1655151679.git.jag.raman@oracle.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2022-06-15vfio-user: handle PCI config space accessesJagannathan Raman2-0/+53
Define and register handlers for PCI config space accesses Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com> Signed-off-by: John G Johnson <john.g.johnson@oracle.com> Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: be9d2ccf9b1d24e50dcd9c23404dbf284142cec7.1655151679.git.jag.raman@oracle.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2022-06-15vfio-user: run vfio-user contextJagannathan Raman1-1/+117
Setup a handler to run vfio-user context. The context is driven by messages to the file descriptor associated with it - get the fd for the context and hook up the handler with it Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com> Signed-off-by: John G Johnson <john.g.johnson@oracle.com> Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: e934b0090529d448b6a7972b21dfc3d7421ce494.1655151679.git.jag.raman@oracle.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2022-06-15vfio-user: find and init PCI deviceJagannathan Raman1-0/+67
Find the PCI device with specified id. Initialize the device context with the QEMU PCI device Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com> Signed-off-by: John G Johnson <john.g.johnson@oracle.com> Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 7798dbd730099b33fdd00c4c202cfe79e5c5c151.1655151679.git.jag.raman@oracle.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2022-06-15vfio-user: instantiate vfio-user contextJagannathan Raman1-0/+82
create a context with the vfio-user library to run a PCI device Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com> Signed-off-by: John G Johnson <john.g.johnson@oracle.com> Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: a452871ac8c812ff96fc4f0ce6037f4769953fab.1655151679.git.jag.raman@oracle.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2022-06-15vfio-user: define vfio-user-server objectJagannathan Raman4-0/+241
Define vfio-user object which is remote process server for QEMU. Setup object initialization functions and properties necessary to instantiate the object Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com> Signed-off-by: John G Johnson <john.g.johnson@oracle.com> Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: e45a17001e9b38f451543a664ababdf860e5f2f2.1655151679.git.jag.raman@oracle.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2022-06-15vfio-user: build libraryJagannathan Raman2-0/+6
add the libvfio-user library as a submodule. build it as a meson subproject. libvfio-user is distributed with BSD 3-Clause license and json-c with MIT (Expat) license Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com> Signed-off-by: John G Johnson <john.g.johnson@oracle.com> Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: c2adec87958b081d1dc8775d4aa05c897912f025.1655151679.git.jag.raman@oracle.com [Changed submodule URL to QEMU's libvfio-user mirror on GitLab. The QEMU project mirrors its dependencies so that it can provide full source code even in the event that its dependencies become unavailable. Note that the mirror repo is manually updated, so please contact me to make newer libvfio-user commits available. If I become a bottleneck we can set up a cronjob. Updated scripts/meson-buildoptions.sh to match the meson_options.txt change. Failure to do so can result in scripts/meson-buildoptions.sh being modified by the build system later on and you end up with a dirty working tree. --Stefan] Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2022-06-15remote/machine: add vfio-user propertyJagannathan Raman1-0/+23
Add vfio-user to x-remote machine. It is a boolean, which indicates if the machine supports vfio-user protocol. The machine configures the bus differently vfio-user and multiprocess protocols, so this property informs it on how to configure the bus. This property should be short lived. Once vfio-user fully replaces multiprocess, this property could be removed. Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com> Signed-off-by: John G Johnson <john.g.johnson@oracle.com> Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 5d51a152a419cbda35d070b8e49b772b60a7230a.1655151679.git.jag.raman@oracle.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2022-06-15remote/machine: add HotplugHandler for remote machineJagannathan Raman1-0/+10
Allow hotplugging of PCI(e) devices to remote machine Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com> Signed-off-by: John G Johnson <john.g.johnson@oracle.com> Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: d1e6cfa0afb528ad343758f9b1d918be0175c5e5.1655151679.git.jag.raman@oracle.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2022-05-16QIOChannel: Add flags on io_writev and introduce io_flush callbackLeonardo Bras1-1/+1
Add flags to io_writev and introduce io_flush as optional callback to QIOChannelClass, allowing the implementation of zero copy writes by subclasses. How to use them: - Write data using qio_channel_writev*(...,QIO_CHANNEL_WRITE_FLAG_ZERO_COPY), - Wait write completion with qio_channel_flush(). Notes: As some zero copy write implementations work asynchronously, it's recommended to keep the write buffer untouched until the return of qio_channel_flush(), to avoid the risk of sending an updated buffer instead of the buffer state during write. As io_flush callback is optional, if a subclass does not implement it, then: - io_flush will return 0 without changing anything. Also, some functions like qio_channel_writev_full_all() were adapted to receive a flag parameter. That allows shared code between zero copy and non-zero copy writev, and also an easier implementation on new flags. Signed-off-by: Leonardo Bras <leobras@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Peter Xu <peterx@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Message-Id: <20220513062836.965425-3-leobras@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2022-04-06Remove qemu-common.h include from most unitsMarc-André Lureau8-8/+0
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20220323155743.1585078-33-marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-02-21hw/remote: Add missing includePhilippe Mathieu-Daudé1-0/+1
Currently "qemu/error-report.h" is implicitly included, however if headers in include/ get refactored, we get: hw/remote/proxy-memory-listener.c: In function ‘proxy_memory_listener_commit’: hw/remote/proxy-memory-listener.c:183:9: error: implicit declaration of function ‘error_report’; did you mean ‘error_report_err’? [-Werror=implicit-function-declaration] 183 | error_report("Number of fds is more than %d", REMOTE_MAX_FDS); | ^~~~~~~~~~~~ | error_report_err Add the missing "qemu/error-report.h" header to avoid that. Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Jagannathan Raman <jag.raman@oracle.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220207082756.82600-3-f4bug@amsat.org> Signed-off-by: Thomas Huth <thuth@redhat.com>
2021-10-04hw/remote/proxy: Categorize Wireless devices as 'Network' onesPhilippe Mathieu-Daudé1-0/+1
QEMU doesn't distinct network devices per link layer (Ethernet, Wi-Fi, CAN, ...). Categorize PCI Wireless cards as Network devices. Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Jagannathan Raman <jag.raman@oracle.com> Message-Id: <20210926201926.1690896-1-f4bug@amsat.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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>
2021-08-26Remove superfluous ERRP_GUARD()Markus Armbruster1-3/+0
Macro ERRP_GUARD() is only needed when we want to dereference @errp or pass it to error_prepend() or error_append_hint(). Delete superfluous ones. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20210720125408.387910-15-armbru@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com>
2021-08-26multi-process: Fix pci_proxy_dev_realize() error handlingMarkus Armbruster1-1/+9
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. pci_proxy_dev_realize() is wrong that way: it passes @errp to qio_channel_new_fd() without checking for failure. If it runs into another failure, it trips error_setv()'s assertion. Fix it to check for failure properly. Fixes: 9f8112073aad8e485ac012ee18809457ab7f23a6 Cc: Elena Ufimtseva <elena.ufimtseva@oracle.com> Cc: Jagannathan Raman <jag.raman@oracle.com> Cc: John G Johnson <john.g.johnson@oracle.com> Cc: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20210720125408.387910-5-armbru@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Acked-by: Jagannathan Raman <jag.raman@oracle.com> Acked-by: Michael S. Tsirkin <mst@redhat.com>
2021-07-20remote/memory: Replace share parameter with ram_flagsYang Zhong1-1/+1
Fixes: d5015b801340 ("softmmu/memory: Pass ram_flags to qemu_ram_alloc_from_fd()") Signed-off-by: Yang Zhong <yang.zhong@intel.com> Reviewed-by: David Hildenbrand <david@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Pankaj Gupta <pankaj.gupta@ionos.com> Reviewed-by: Peter Xu <peterx@redhat.com> Message-Id: <20210709052800.63588-1-yang.zhong@intel.com> Signed-off-by: Cleber Rosa <crosa@redhat.com>
2021-05-21multi-process: Initialize variables declared with g_auto*Zenghui Yu2-5/+3
Quote docs/devel/style.rst (section "Automatic memory deallocation"): * Variables declared with g_auto* MUST always be initialized, otherwise the cleanup function will use uninitialized stack memory Initialize @name properly to get rid of the compilation error (using gcc-7.3.0 on CentOS): ../hw/remote/proxy.c: In function 'pci_proxy_dev_realize': /usr/include/glib-2.0/glib/glib-autocleanups.h:28:3: error: 'name' may be used uninitialized in this function [-Werror=maybe-uninitialized] g_free (*pp); ^~~~~~~~~~~~ ../hw/remote/proxy.c:350:30: note: 'name' was declared here g_autofree char *name; ^~~~ Signed-off-by: Zenghui Yu <yuzenghui@huawei.com> Reviewed-by: Jagannathan Raman <jag.raman@oracle.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Miroslav Rezanina <mrezanin@redhat.com> Message-id: 20210312112143.1369-1-yuzenghui@huawei.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2021-05-13multi-process: Avoid logical AND of mutually exclusive testsJagannathan Raman1-1/+1
Fixes an if statement that performs a logical AND of mutually exclusive tests Buglink: https://bugs.launchpad.net/qemu/+bug/1926995 Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-Id: <1620402803-9237-1-git-send-email-jag.raman@oracle.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-05-02Do not include exec/address-spaces.h if it's not really necessaryThomas Huth3-3/+0
Stop including exec/address-spaces.h in files that don't need it. Signed-off-by: Thomas Huth <thuth@redhat.com> Message-Id: <20210416171314.2074665-5-thuth@redhat.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-05-02Do not include cpu.h if it's not really necessaryThomas Huth1-1/+0
Stop including cpu.h in files that don't need it. Signed-off-by: Thomas Huth <thuth@redhat.com> Message-Id: <20210416171314.2074665-4-thuth@redhat.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-05-02Do not include hw/boards.h if it's not really necessaryThomas Huth1-1/+0
Stop including hw/boards.h in files that don't need it. Signed-off-by: Thomas Huth <thuth@redhat.com> Message-Id: <20210416171314.2074665-3-thuth@redhat.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-02-10multi-process: perform device reset in the remote processElena Ufimtseva2-0/+41
Perform device reset in the remote process when QEMU performs device reset. This is required to reset the internal state (like registers, etc...) of emulated devices Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com> Signed-off-by: John G Johnson <john.g.johnson@oracle.com> Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 7cb220a51f565dc0817bd76e2f540e89c2d2b850.1611938319.git.jag.raman@oracle.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2021-02-10multi-process: Retrieve PCI info from remote processJagannathan Raman1-0/+84
Retrieve PCI configuration info about the remote device and configure the Proxy PCI object based on the returned information Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com> Signed-off-by: John G Johnson <john.g.johnson@oracle.com> Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 85ee367bbb993aa23699b44cfedd83b4ea6d5221.1611938319.git.jag.raman@oracle.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2021-02-10multi-process: create IOHUB object to handle irqJagannathan Raman6-0/+195
IOHUB object is added to manage PCI IRQs. It uses KVM_IRQFD ioctl to create irqfd to injecting PCI interrupts to the guest. IOHUB object forwards the irqfd to the remote process. Remote process uses this fd to directly send interrupts to the guest, bypassing QEMU. Signed-off-by: John G Johnson <john.g.johnson@oracle.com> Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 51d5c3d54e28a68b002e3875c59599c9f5a424a1.1611938319.git.jag.raman@oracle.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2021-02-10multi-process: Synchronize remote memoryJagannathan Raman4-0/+238
Add ProxyMemoryListener object which is used to keep the view of the RAM in sync between QEMU and remote process. A MemoryListener is registered for system-memory AddressSpace. The listener sends SYNC_SYSMEM message to the remote process when memory listener commits the changes to memory, the remote process receives the message and processes it in the handler for SYNC_SYSMEM message. Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Signed-off-by: John G Johnson <john.g.johnson@oracle.com> Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 04fe4e6a9ca90d4f11ab6f59be7652f5b086a071.1611938319.git.jag.raman@oracle.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2021-02-10multi-process: PCI BAR read/write handling for proxy & remote endpointsJagannathan Raman3-0/+149
Proxy device object implements handler for PCI BAR writes and reads. The handler uses BAR_WRITE/BAR_READ message to communicate to the remote process with the BAR address and value to be written/read. The remote process implements handler for BAR_WRITE/BAR_READ message. Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com> Signed-off-by: John G Johnson <john.g.johnson@oracle.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: a8b76714a9688be5552c4c92d089bc9e8a4707ff.1611938319.git.jag.raman@oracle.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2021-02-10multi-process: Forward PCI config space acceses to the remote processElena Ufimtseva3-1/+122
The Proxy Object sends the PCI config space accesses as messages to the remote process over the communication channel Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com> Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Signed-off-by: John G Johnson <john.g.johnson@oracle.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: d3c94f4618813234655356c60e6f0d0362ff42d6.1611938319.git.jag.raman@oracle.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2021-02-10multi-process: add proxy communication functionsElena Ufimtseva1-0/+34
Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com> Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Signed-off-by: John G Johnson <john.g.johnson@oracle.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: d54edb4176361eed86b903e8f27058363b6c83b3.1611938319.git.jag.raman@oracle.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2021-02-10multi-process: introduce proxy objectElena Ufimtseva2-0/+100
Defines a PCI Device proxy object as a child of TYPE_PCI_DEVICE. Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com> Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Signed-off-by: John G Johnson <john.g.johnson@oracle.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: b5186ebfedf8e557044d09a768846c59230ad3a7.1611938319.git.jag.raman@oracle.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2021-02-10multi-process: setup memory manager for remote deviceJagannathan Raman3-0/+78
SyncSysMemMsg message format is defined. It is used to send file descriptors of the RAM regions to remote device. RAM on the remote device is configured with a set of file descriptors. Old RAM regions are deleted and new regions, each with an fd, is added to the RAM. Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Signed-off-by: John G Johnson <john.g.johnson@oracle.com> Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 7d2d1831d812e85f681e7a8ab99e032cf4704689.1611938319.git.jag.raman@oracle.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2021-02-10multi-process: Associate fd of a PCIDevice with its objectJagannathan Raman2-0/+204
Associate the file descriptor for a PCIDevice in remote process with DeviceState object. Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com> Signed-off-by: John G Johnson <john.g.johnson@oracle.com> Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: f405a2ed5d7518b87bea7c59cfdf334d67e5ee51.1611938319.git.jag.raman@oracle.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2021-02-10multi-process: Initialize message handler in remote deviceJagannathan Raman2-0/+58
Initializes the message handler function in the remote process. It is called whenever there's an event pending on QIOChannel that registers this function. Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com> Signed-off-by: John G Johnson <john.g.johnson@oracle.com> Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 99d38d8b93753a6409ac2340e858858cda59ab1b.1611938319.git.jag.raman@oracle.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2021-02-10multi-process: define MPQemuMsg format and transmission functionsElena Ufimtseva4-0/+211
Defines MPQemuMsg, which is the message that is sent to the remote process. This message is sent over QIOChannel and is used to command the remote process to perform various tasks. Define transmission functions used by proxy and by remote. Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Signed-off-by: John G Johnson <john.g.johnson@oracle.com> Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 56ca8bcf95195b2b195b08f6b9565b6d7410bce5.1611938319.git.jag.raman@oracle.com [Replace struct iovec send[2] = {0} with {} to make clang happy as suggested by Peter Maydell <peter.maydell@linaro.org>. --Stefan] Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2021-02-10multi-process: setup a machine object for remote device processJagannathan Raman2-0/+75
x-remote-machine object sets up various subsystems of the remote device process. Instantiate PCI host bridge object and initialize RAM, IO & PCI memory regions. Signed-off-by: John G Johnson <john.g.johnson@oracle.com> Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: c537f38d17f90453ca610c6b70cf3480274e0ba1.1611938319.git.jag.raman@oracle.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2021-02-10multi-process: setup PCI host bridge for remote deviceJagannathan Raman1-1/+2
PCI host bridge is setup for the remote device process. It is implemented using remote-pcihost object. It is an extension of the PCI host bridge setup by QEMU. Remote-pcihost configures a PCI bus which could be used by the remote PCI device to latch on to. Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Signed-off-by: John G Johnson <john.g.johnson@oracle.com> Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 0871ba857abb2eafacde07e7fe66a3f12415bfb2.1611938319.git.jag.raman@oracle.com [Added PCI_EXPRESS condition in hw/remote/Kconfig since remote-pcihost needs PCIe. This solves "make check" failure on s390x. Fix suggested by Philippe Mathieu-Daudé <philmd@redhat.com> and Thomas Huth <thuth@redhat.com>. --Stefan] Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2021-02-09multi-process: Add config option for multi-process QEMUJagannathan Raman1-0/+3
Add configuration options to enable or disable multiprocess QEMU code Signed-off-by: John G Johnson <john.g.johnson@oracle.com> Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 6cc37253e35418ebd7b675a31a3df6e3c7a12dc1.1611938319.git.jag.raman@oracle.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
generated by cgit v1.1 at 2024-12-28 10:42:05 +0000