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2016-09-10vhost-vsock: add virtio sockets deviceStefan Hajnoczi
Implement the new virtio sockets device for host<->guest communication using the Sockets API. Most of the work is done in a vhost kernel driver so that virtio-vsock can hook into the AF_VSOCK address family. The QEMU vhost-vsock device handles configuration and live migration while the rx/tx happens in the vhost_vsock.ko Linux kernel driver. The vsock device must be given a CID (host-wide unique address): # qemu -device vhost-vsock-pci,id=vhost-vsock-pci0,guest-cid=3 ... For more information see: http://qemu-project.org/Features/VirtioVsock [Endianness fixes and virtio-ccw support by Claudio Imbrenda <imbrenda@linux.vnet.ibm.com>] Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> [mst: rebase to master] Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-09-06s390x/kvm: allow runtime-instrumentation for "none" machineDavid Hildenbrand
To be able to query the correct host model for the "none" machine, let's allow runtime-instrumentation for that machine. Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Message-Id: <20160905085244.99980-21-dahi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-09-06s390x/sclp: propagate hmfaiDavid Hildenbrand
hmfai is provided on CPU models >= z196. Let's propagate it properly. Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Message-Id: <20160905085244.99980-19-dahi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-09-06s390x/sclp: propagate the mha via sclpDavid Hildenbrand
The mha is provided in the CPU model, so get any CPU and extract the value. Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Message-Id: <20160905085244.99980-18-dahi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-09-06s390x/sclp: propagate the ibc val (lowest and unblocked ibc)David Hildenbrand
If we have a lowest ibc, we can indicate the ibc to the guest. Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Message-Id: <20160905085244.99980-17-dahi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-09-06s390x/sclp: indicate sclp featuresDavid Hildenbrand
We have three different blocks in the SCLP read-SCP information response that indicate sclp features. Let's prepare propagation. Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Message-Id: <20160905085244.99980-16-dahi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-09-06s390x/sclp: factor out preparation of cpu entriesDavid Hildenbrand
Let's factor out the common code of "read cpu info" and "read scp info". This will make the introduction of new cpu entry fields easier. Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Message-Id: <20160905085244.99980-14-dahi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-09-06s390x/cpumodel: "host" and "qemu" as CPU subclassesDavid Hildenbrand
This patch introduces two CPU models, "host" and "qemu". "qemu" is used as default when running under TCG. "host" is used as default when running under KVM. "host" cannot be used without KVM. "host" is not migration-safe. They both inherit from the base s390x CPU, which is turned into an abstract class. This patch also changes CPU creation to take care of the passed CPU string and reuses common code parse_features() function for that purpose. Unknown CPU definitions are now reported. The "-cpu ?" and "query-cpu-definition" commands are changed to list all CPU subclasses automatically, including migration-safety and whether static. Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Message-Id: <20160905085244.99980-3-dahi@linux.vnet.ibm.com> [CH: fix up self-assignments in s390_cpu_list, as spotted by clang] Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-09-05s390x/css: handle cssid 255 correctlyCornelia Huck
The cssid 255 is reserved but still valid from an architectural point of view. However, feeding a bogus schid of 0xffffffff into the virtio hypercall will lead to a crash: Stack trace of thread 138363: #0 0x00000000100d168c css_find_subch (qemu-system-s390x) #1 0x00000000100d3290 virtio_ccw_hcall_notify #2 0x00000000100cbf60 s390_virtio_hypercall #3 0x000000001010ff7a handle_hypercall #4 0x0000000010079ed4 kvm_cpu_exec (qemu-system-s390x) #5 0x00000000100609b4 qemu_kvm_cpu_thread_fn #6 0x000003ff8b887bb4 start_thread (libpthread.so.0) #7 0x000003ff8b78df0a thread_start (libc.so.6) This is because the css array was only allocated for 0..254 instead of 0..255. Let's fix this by bumping MAX_CSSID to 255 and fencing off the reserved cssid of 255 during css image allocation. Reported-by: Christian Borntraeger <borntraeger@de.ibm.com> Tested-by: Christian Borntraeger <borntraeger@de.ibm.com> Cc: qemu-stable@nongnu.org Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-09-05s390/sclp: cache the sclp deviceChristian Borntraeger
With the current code a simple sclp command takes about 13000 ns The biggest part seems to be the resolver of the object model. By caching the sclp device the time for an sclp command goes down to 2500ns. Talking about real life scenarios, this change doubles the speed of the sclp console when sending single bytes outputs to /dev/console. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-09-05s390x/pci: assert zpci always existingYi Min Zhao
If one pci device is plugged successfully, there must be a zpci device existing. This means that during hot-unplugging a pci device, its corresponding zpci device must be found. Therefore we use an assert to replace current code. Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-09-05s390x/pci: return directly if create zpci failedYi Min Zhao
In the case that zpci is automatically created, we did not return immediately on failure, which would lead to NULL pointer dereferencing. Let's fix it. Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-09-05s390x: add compat machine for 2.8Cornelia Huck
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-08-12trace-events: fix first line comment in trace-eventsLaurent Vivier
Documentation is docs/tracing.txt instead of docs/trace-events.txt. find . -name trace-events -exec \ sed -i "s?See docs/trace-events.txt for syntax documentation.?See docs/tracing.txt for syntax documentation.?" \ {} \; Signed-off-by: Laurent Vivier <lvivier@redhat.com> Message-id: 1470669081-17860-1-git-send-email-lvivier@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2016-08-08s390x/pci: fix null pointer bugYi Min Zhao
We should make sure that it's not NULL firstly. Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-07-20s390x/css: provide a dev_path for css devicesCornelia Huck
We need to implement the get_dev_path method for the css bus, or else we might end up with two different devices having the same qdev_path. This was noticed when adding two scsi_hd controllers: The SCSIBus code will produce a non-unique dev_path for vmstate usage if the parent bus does not provide the get_dev_path method. We simply use the device's bus id, as this is unique and we won't have any deeper hierarchy from a channel subsystem perspective anyway. Note that we need to disable this for older machine versions, as this changes the migration format. Reported-by: Marc Hartmayer <mhartmay@linux.vnet.ibm.com> Reviewed-by: Halil Pasic <pasic@linux.vnet.ibm.com> Reviewed-by: Sascha Silbe <silbe@linux.vnet.ibm.com> Tested-by: Marc Hartmayer <mhartmay@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-07-20s390x/css: sch_handle_start_func() handles resume, tooSascha Silbe
It's not obvious from the code flow that sch_handle_start_func() gets called for rsch. Add some comments explaining this. Signed-off-by: Sascha Silbe <silbe@linux.vnet.ibm.com> Reviewed-by: Halil Pasic <pasic@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-07-20s390x/css: copy CCW format bit from ORB to SCSWSascha Silbe
The CCW Format (F) flag of the Subchannel-Status Word (SCSW) indicates the format of the CCWs "associated with an I/O operation", i.e. the value of CCW-Format Control (F) bit of the Operation-Request Block (ORB). Copy the CCW format bit from the ORB to the SCSW so we correctly indicate the format of the CCWs to the guest. Signed-off-by: Sascha Silbe <silbe@linux.vnet.ibm.com> Reviewed-by: Halil Pasic <pasic@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-07-12Clean up decorations and whitespace around header guardsMarkus Armbruster
Cleaned up with scripts/clean-header-guards.pl. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Richard Henderson <rth@twiddle.net>
2016-07-12Use #include "..." for our own headers, <...> for othersMarkus Armbruster
Tracked down with an ugly, brittle and probably buggy Perl script. Also move includes converted to <...> up so they get included before ours where that's obviously okay. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Tested-by: Eric Blake <eblake@redhat.com> Reviewed-by: Richard Henderson <rth@twiddle.net>
2016-07-11s390x/pci: make hot-unplug handler smootherYi Min Zhao
The current implementation of hot-unplug handler is abrupt. Any pci operation will be just rejected if pci device is unconfigured. Thus a pci device can not be reset or destroyed in a right, smooth and safe way. Improve this as follows: - Notify the guest via a HP_EVENT_DECONFIGURE_REQUEST(0x303) event in the unplug handler, giving it a chance to deconfigure the device via sclp and allowing us to continue hot-unplug afterwards. - Set up a timer that will generate the HP_EVENT_CONFIGURE_TO_STBRES (0x304) event as before if the guest did not react after an adequate time. Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-07-11s390x/pci: replace fid with idx in msg data of msixYi Min Zhao
Present code uses fid as the part of message data of msix for looking up the specific zpci device. However it limits the usable range of fid, and the code looking up the zpci device may fail due to truncation of the fid. In addition, fh is composed of enabled bit, FH_VIRT and the array index. So we can use the array index as the identifier to store in msg data. Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-07-11s390x/pci: fix stpcifc_service_callYi Min Zhao
Firstly the function misses dmaas checking. This patch adds it. Secondly the function uses s390_pci_find_dev_by_fh() to look up the zpci device. This may fail if the guest provides a valid and disabled fh but fh of the associated zpci device is enabled. Thus we use s390_pci_find_dev_by_idx() instead. Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-07-11s390x/pci: refactor list_pciYi Min Zhao
Because of the refactor of s390_pci_find_dev_by_idx(), list_pci() should be updated. We introduce a new function to get the next available zpci device. It simplifies the code of looking up zpci devices. Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com> Acked-by: Pierre Morel <pmorel@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-07-11s390x/pci: refactor s390_pci_find_dev_by_idxYi Min Zhao
s390_find_dev_by_idx() only indexes usable zpci devices. It implies that the index value of each zpci device is dynamic and may change if a new zpci device is plugged. So we have to use a constant index to look up the device. Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-07-11s390x/pci: add checkings in CLP_SET_PCI_FNYi Min Zhao
The code in CLP_SET_PCI_FN case misses some checkings. Let's add them. Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-07-11s390x/pci: enable zpci hot-plug/hot-unplugYi Min Zhao
We need to support hot-plug/hot-unplug for the new zpci devices as well. This patch enables the present hot-plug/hot-unplug handlers to support not only generic pci devices but also zpci devices. Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-07-11s390x/pci: enable uid-checkingYi Min Zhao
The uid-checking facility guarantees uniqueness of the uid within the vm and exposes the real uid to the guest when listing pci devices. Let's always enable it and present it to the guest in the response to the list pci clp command. Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-07-11s390x/pci: introduce S390PCIBusDevice qdevYi Min Zhao
To support definitions of s390 pci attributes in Qemu cmdline, we have to make current S390PCIBusDevice struct inherit DeviceState and add three properties for it. Currently we only support definitions of uid and fid. 'uid' is optionally defined by users, identifies a zpci device and must be defined with a 16-bit and non-zero unique value. 'fid' ranges from 0x0 to 0xFFFFFFFF. For fid property, we introduce a new PropertyInfo by the name of s390_pci_fid_propinfo with our special setter and getter. As 'fid' is optional, introduce 'fid_defined' to track whether the user specified a fid. 'target' field is to direct qemu to find the corresponding generic PCI device. It is equal to the 'id' value of one of generic pci devices. If the user doesn't specify 'id' parameter for a generic pci device, its 'id' value will be generated automatically and use this value as 'target' to create an associated zpci device. If the user did not specify 'uid' or 'fid', values are generated automatically. 'target' is required. In addition, if a pci device has no associated zpci device, the code will generate a zpci device automatically for it. Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-07-11s390x/pci: introduce S390PCIIOMMUYi Min Zhao
Currently each zpci device holds its own DMA address space and memory region. At the same time, all instances of zpci device are stored in S390pciState. So duirng the initialization of S390pciState, all zpci devices are created and then all DMA address spaces are created. Thus, when initializing pci devices, their corresponding DMA address spaces could be found. But zpci qdev will be introduced later. Zpci device may be initialized and plugged afterwards generic pci device. So we should initialize all DMA address spaces and memory regions before initializing zpci devices. We introduce a new struct named S390PCIIOMMU. And a new field of S390pciState, which is an array to store all instances of S390PCIIOMMU, is added so that qemu pci code could find the corresponding DMA address space when initializing a generic pci device. And this should be done before the connection of a zpci device and a generic pci device is built. Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com> Acked-by: Pierre Morel <pmorel@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-07-11s390x/pci: introduce S390PCIBusYi Min Zhao
To enable S390PCIBusDevice as qdev, there should be a new bus to plug and manage all instances of S390PCIBusDevice. Due to this, S390PCIBus is introduced. Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-07-11s390x/pci: enforce zPCI state checkingYi Min Zhao
Current code uses some fields combinatorially to indicate the state of a s390 pci device. This patch introduces device states in order to make the code more readable and more logical. Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-07-11s390x/pci: refactor s390_pci_find_dev_by_fhYi Min Zhao
Because this function is called very frequently, we should use a more effective way to find the zpci device. So we use the FH's index to get the device directly. Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-07-11s390x/pci: unify FH_ macrosYi Min Zhao
Present code uses some macros to structure PCI Function Handle. But their names don't have a uniform format. Let's use FH_MASK_ as the unified prefix. While we're at it, differentiate the SHM bits: use different bits for vfio and emulated devices. Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-07-11s390x/pci: write fid in CLP_QUERY_PCI_FNYi Min Zhao
We forgot to write the fid; fix that. Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com> Acked-by: Pierre Morel <pmorel@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-07-11s390x/pci: acceleration for getting S390pciStateYi Min Zhao
There are a number of places where the code needs to get the instance of S390pciState. It calls object_resolve_path() every time. This wastes a lot of time and leads to low performance. Thus we add s390_get_phb() to improve it. Because we always have a phb, we remove all return checkings in the callers and add an assert in s390_get_phb() to make sure that phb is getted successfully. Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-07-11s390x/pci: fix failures of dma map/unmapYi Min Zhao
In commit d78c19b5cf4821d0c198f4132a085bdbf19dda4c, vfio code stores the IOMMU's offset_within_address_space and adjusts the IOVA before calling vfio_dma_map/vfio_dma_unmap. But s390_translate_iommu already considers the base address of an IOMMU memory region. Thus we use pal as the size and 0x0 as the base address to initialize IOMMU memory subregion. Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-07-11s390x/css: Unplug handler of virtual css bridgeJing Liu
The previous patch moved virtual css bridge and bus out from virtio-ccw, but kept the direct reference of virtio-ccw specific unplug function inside css-bridge.c. To make the virtual css bus and bridge useful for non-virtio devices, this introduces a common unplug function pointer "unplug" to call specific virtio-ccw unplug parts. Thus, the tight coupling to virtio-ccw can be removed. This unplug pointer is a member of CCWDeviceClass, which is introduced as an abstract device layer called "ccw-device". This layer is between DeviceState and specific devices which are plugged in virtual css bus, like virtio-ccw device. The specific unplug handlers should be assigned to "unplug" during initialization. Signed-off-by: Jing Liu <liujbjl@linux.vnet.ibm.com> Reviewed-by: Sascha Silbe <silbe@linux.vnet.ibm.com> Reviewed-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> Reviewed-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-07-11s390x/css: Factor out virtual css bridge and busJing Liu
Currently, common base layers virtual css bridge and bus are defined in hw/s390x/virtio-ccw.c(h). In order to support multiple types of devices in the virtual channel subsystem, especially non virtio-ccw, refactoring work needs to be done. This work is just a pure code move without any functional change except dropping an empty function virtual_css_bridge_init() and virtio_ccw_busdev_unplug() changing. virtio_ccw_busdev_unplug() is specific to virtio-ccw but gets referenced from the common virtual css bridge code. To keep the functional changes to a minimum we export this function from virtio-ccw.c and continue to reference it inside virtual_css_bridge_class_init() (now living in hw/s390x/css-bridge.c). A follow-up patch will clean this up. Signed-off-by: Jing Liu <liujbjl@linux.vnet.ibm.com> Reviewed-by: Sascha Silbe <silbe@linux.vnet.ibm.com> Reviewed-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-07-11s390x/css: use define for "virtual-css-bridge" literalSascha Silbe
Introduce a TYPE_* define (like we already use for a couple of other QOM types) for the name of the virtual CSS bridge QOM type instead of sprinkling the same string literal over several source files. Signed-off-by: Sascha Silbe <silbe@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-07-11s390x/css: factor out some generic code from virtio_ccw_device_realize()Sascha Silbe
A lot of what virtio_ccw_device_realize() does isn't specific to virtio; it would apply to emulated CCW as well. Factor it out to make it easier to implement emulated CCW devices later on. Signed-off-by: Sascha Silbe <silbe@linux.vnet.ibm.com> Reviewed-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> Reviewed-by: Halil Pasic <pasic@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-07-11s390x/ipl: fix reboots for migration from different biosDavid Hildenbrand
When migrating from a different QEMU version, the start_address and bios_start_address may differ. During migration these values are migrated and overwrite the values that were detected by QEMU itself. On a reboot, QEMU will reload its own BIOS, but use the migrated start addresses, which does not work if the values differ. Fix this by not relying on the migrated values anymore, but still provide them during migration, so existing QEMUs continue to work. Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Cc: qemu-stable@nongnu.org Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-07-11s390x/ipl: Support IPL from selected SCSI deviceAlexander Yarygin
If bootindex is specified for a device, we need to IPL from it. Currently it works for ccw devices, but not for SCSI. To be able to IPL from the specific device, pc-bios needs to know its address. For this reason we add special QEMU_SCSI IPL type into the IPLB structure, that contains the scsi device address. We enhance the ipl block with a currently qemu-only parameter block that allows us to specify a concrete scsi device. Signed-off-by: Alexander Yarygin <yarygin@linux.vnet.ibm.com> Reviewed-by: Eric Farman <farman@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-06-24virtio-ccw: convert to ioeventfd callbacksCornelia Huck
Use the new interface. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Fam Zheng <famz@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-06-20Merge remote-tracking branch 'remotes/stefanha/tags/tracing-pull-request' ↵Peter Maydell
into staging # gpg: Signature made Mon 20 Jun 2016 21:29:27 BST # gpg: using RSA key 0x9CA4ABB381AB73C8 # gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>" # gpg: aka "Stefan Hajnoczi <stefanha@gmail.com>" # Primary key fingerprint: 8695 A8BF D3F9 7CDA AC35 775A 9CA4 ABB3 81AB 73C8 * remotes/stefanha/tags/tracing-pull-request: (42 commits) trace: split out trace events for linux-user/ directory trace: split out trace events for qom/ directory trace: split out trace events for target-ppc/ directory trace: split out trace events for target-s390x/ directory trace: split out trace events for target-sparc/ directory trace: split out trace events for net/ directory trace: split out trace events for audio/ directory trace: split out trace events for ui/ directory trace: split out trace events for hw/alpha/ directory trace: split out trace events for hw/arm/ directory trace: split out trace events for hw/acpi/ directory trace: split out trace events for hw/vfio/ directory trace: split out trace events for hw/s390x/ directory trace: split out trace events for hw/pci/ directory trace: split out trace events for hw/ppc/ directory trace: split out trace events for hw/9pfs/ directory trace: split out trace events for hw/i386/ directory trace: split out trace events for hw/isa/ directory trace: split out trace events for hw/sd/ directory trace: split out trace events for hw/sparc/ directory ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-06-20trace: split out trace events for hw/s390x/ directoryDaniel P. Berrange
Move all trace-events for files in the hw/s390x/ directory to their own file. Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Message-id: 1466066426-16657-29-git-send-email-berrange@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2016-06-20error: Remove unnecessary local_err variablesEduardo Habkost
This patch simplifies code that uses a local_err variable just to immediately use it for an error_propagate() call. Coccinelle patch used to perform the changes added to scripts/coccinelle/remove_local_err.cocci. Reviewed-by: Eric Blake <eblake@redhat.com> Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Message-Id: <1465855078-19435-3-git-send-email-ehabkost@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> [Blank line in s390-virtio-ccw.c restored] Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-06-20error: Remove NULL checks on error_propagate() callsEduardo Habkost
error_propagate() already ignores local_err==NULL, so there's no need to check it before calling. Coccinelle patch used to perform the changes added to scripts/coccinelle/error_propagate_null.cocci. Reviewed-by: Eric Blake <eblake@redhat.com> Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Message-Id: <1465855078-19435-2-git-send-email-ehabkost@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-06-14s390x: Limit s390-ccw machines to 248 CPUsChristian Borntraeger
The sclp scp read info call fills in a buffer with information about the system. With more than 248 CPUs we overflow the 4k buffer of the SCCB, leading to random data corruption. Basically ALL guest operating systems call scp read info, so let's limit the machines to 248 CPUs to make it obvious that >=249 does not work. As KVM also limits itself to 248 and TCG on s390 does not support SMP, this should cause no regression for any user as no VMs with more than 248 VCPUs were ever possible. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Reviewed-by: Boris Fiuczynski <fiuczy@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-06-14virtio-ccw: Provide traces for indicator changesChristian Borntraeger
This allows to trace changes in the summary and queue indicators for the non-irqfd case. For irqfd, kernel traces are needed instead. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
generated by cgit v1.2.3 (git 2.26.2) at 2025-01-15 20:49:56 +0000