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2014-06-23xen-hvm: Fix xen_hvm_init() to adjust pc memory layoutDon Slutz
This is just below_4g_mem_size and above_4g_mem_size which is used later in QEMU. Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: Don Slutz <dslutz@verizon.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-23hw/pcie: implement power controller functionalityMarcel Apfelbaum
It is needed by hot-unplug in order to get an indication from the OS when the device can be physically detached. Signed-off-by: Marcel Apfelbaum <marcel.a@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-23vhost: block migration if backend does not log memoryMichael S. Tsirkin
vhost user does not support LOG_ALL feature bit. Generally, we should not try to set this bit without checking that backend can support it first. Detect and block migration. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-20Merge remote-tracking branch 'remotes/kvm/uq/master' into stagingPeter Maydell
* remotes/kvm/uq/master: hw/mips: malta: Don't boot from flash with KVM T&E MAINTAINERS: Add entry for MIPS KVM target-mips: Enable KVM support in build system hw/mips: malta: Add KVM support hw/mips: In KVM mode, inject IRQ2 (I/O) interrupts via ioctls target-mips: Call kvm_mips_reset_vcpu() from mips_cpu_reset() target-mips: kvm: Add main KVM support for MIPS kvm: Allow arch to set sigmask length target-mips: get_physical_address: Add KVM awareness target-mips: get_physical_address: Add defines for segment bases hw/mips: Add API to convert KVM guest KSEG0 <-> GPA hw/mips/cputimer: Don't start periodic timer in KVM mode target-mips: Reset CPU timer consistently KVM: Fix GSI number space limit Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-06-20Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into stagingPeter Maydell
pc,pci,virtio,hotplug fixes, enhancements numa work by Hu Tao and others memory hotplug by Igor vhost-user by Nikolay, Antonios and others guest virtio announcements by Jason qtest fixes by Sergey qdev hotplug fixes by Paolo misc other fixes mostly by myself Signed-off-by: Michael S. Tsirkin <mst@redhat.com> * remotes/mst/tags/for_upstream: (109 commits) numa: use RAM_ADDR_FMT with ram_addr_t qapi/string-output-visitor: fix bugs tests: simplify code qapi: fix input visitor bugs acpi: rephrase comment qmp: add ACPI_DEVICE_OST event handling qmp: add query-acpi-ospm-status command acpi: implement ospm_status() method for PIIX4/ICH9_LPC devices acpi: introduce TYPE_ACPI_DEVICE_IF interface qmp: add query-memory-devices command numa: handle mmaped memory allocation failure correctly pc: acpi: do not hardcode preprocessor qmp: clean out whitespace qdev: recursively unrealize devices when unrealizing bus qdev: reorganize error reporting in bus_set_realized qapi: fix build on glib < 2.28 qapi: make string output visitor parse int list qapi: make string input visitor parse int list tests: fix memory leak in test of string input visitor hmp: add info memdev ... Conflicts: include/hw/i386/pc.h [PMM: fixed minor conflict in pc.h] Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-06-19acpi: rephrase commentMichael S. Tsirkin
"only upto" is not proper English. Say "up to" and drop "only". Reported-by: Eric Blake <eblake@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19acpi: implement ospm_status() method for PIIX4/ICH9_LPC devicesIgor Mammedov
... using TYPE_ACPI_DEVICE_IF interface. Which provides status reporting of ACPI declared memory devices Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19acpi: introduce TYPE_ACPI_DEVICE_IF interfaceIgor Mammedov
... it will be used to abstract generic ACPI bits from device that implements ACPI interface. ACPIOSTInfo type is used for passing-through raw _OST event/status codes reported by guest OS to a management layer. It lets management tools interpret values as specified by ACPI spec if it is interested in it. QEMU doesn't encode these values as enum, since it doesn't need to handle them and it allows interface to scale well without any changes in QEMU while guest OS and management evolves in time. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19qmp: add query-memory-devices commandIgor Mammedov
... allowing to get state of present memory devices. Currently implemented only for PCDIMMDevice. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19pc: pass MachineState to pc_memory_initPaolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Hu Tao <hutao@cn.fujitsu.com> Reviewed-By: Igor Mammedov <imammedo@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19numa: introduce memory_region_allocate_system_memoryPaolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Hu Tao <hutao@cn.fujitsu.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> MST: resolve conflicts
2014-06-19Add vhost-backend and VhostBackendTypeNikolay Nikolaev
Use vhost_set_backend_type to initialise a proper vhost_ops structure. In vhost_net_init and vhost_net_start_one call conditionally TAP related initialisation depending on the vhost backend type. Signed-off-by: Antonios Motakis <a.motakis@virtualopensystems.com> Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19Add vhost_ops to vhost_dev struct and replace all relevant ioctlsNikolay Nikolaev
Decouple vhost from the Linux kernel by introducing vhost_ops. The intention is to provide different backends - a 'kernel' backend based on the ioctl interface, and an 'user' backend based on a UNIX domain socket and shared memory interface. Signed-off-by: Antonios Motakis <a.motakis@virtualopensystems.com> Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19vhost_net_init will use VhostNetOptions to get all its argumentsNikolay Nikolaev
vhost_dev_init will replace devfd and devpath with a single opaque argument. This is initialised with a file descriptor. When TAP is used (through vhost_net), open /dev/vhost-net and pass the fd as an opaque parameter in VhostNetOptions. The same applies to vhost-scsi - open /dev/vhost-scsi and pass the fd. Signed-off-by: Antonios Motakis <a.motakis@virtualopensystems.com> Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19vhost: add vhost_get_features and vhost_ack_featuresNikolay Nikolaev
Generalize the features get/ack to be used for both vhost-net and vhost-scsi. In vhost-net add vhost_net_get_feature_bits to select the feature bit set depending on the NetClient kind. Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19virtio-net: announce self by guestJason Wang
It's hard to track all mac addresses and their configurations (e.g vlan or ipv6) in qemu. Without this information, it's impossible to build proper garp packet after migration. The only possible solution to this is let guest (who knows all configurations) to do this. So, this patch introduces a new readonly config status bit of virtio-net, VIRTIO_NET_S_ANNOUNCE which is used to notify guest to announce presence of its link through config update interrupt.When guest has done the announcement, it should ack the notification through VIRTIO_NET_CTRL_ANNOUNCE_ACK cmd. This feature is negotiated by a new feature bit VIRTIO_NET_F_ANNOUNCE (which has already been supported by Linux guest). During load, a counter of announcing rounds is set so that after the vm is running it can trigger rounds of config interrupts to notify the guest to build and send the correct garps. Cc: Liuyongan <liuyongan@huawei.com> Cc: Amos Kong <akong@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19ich: get rid of spaces in type nameMichael S. Tsirkin
Names with spaces in them are nasty, let's not go there. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19pc: add "hotplug-memory-region-size" property to PC_MACHINEIgor Mammedov
... it will be used by acpi-build code and by unit tests Signed-off-by: Igor Mammedov <imammedo@redhat.com> Acked-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19pc: ACPI BIOS: implement memory hotplug interfaceIgor Mammedov
- provides static SSDT object for memory hotplug that can handle upto 256 hotplugable memory slots - SSDT template for memory devices and runtime generator of them in SSDT table. Signed-off-by: Vasilis Liaskovitis <vasilis.liaskovitis@profitbricks.com> Signed-off-by: Igor Mammedov <imammedo@redhat.com> Acked-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19pc: add acpi-device link to PCMachineStateIgor Mammedov
the link will used later to access device implementing ACPI functions instead of adhoc lookup in QOM tree. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Acked-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19pc: migrate piix4 & ich9 MemHotplugStateIgor Mammedov
Adds an optional subsection that allows to migrate current state of acpi_memory_hotplug of ACPI PM device. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Acked-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19acpi:ich9: add memory hotplug handlingIgor Mammedov
Add memory hotplug initialization/handling to ICH9 LPC device and enable it by default for post 2.0 machine types Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19acpi:piix4: add memory hotplug handlingIgor Mammedov
Add memory hotplug initialization/handling to PIIX4_PM device and enable it by default for post 2.0 machine types Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> MST: resolve conflict in pc.h
2014-06-19acpi: memory hotplug ACPI hardware implementationIgor Mammedov
- implements QEMU hardware part of memory hotplug protocol described at "docs/specs/acpi_mem_hotplug.txt" - handles only memory add notification event for now Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19acpi: rename cpu_hotplug_defs.h to pc-hotplug.hIgor Mammedov
to make it more generic, so it could be used for memory hotplug as well. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Acked-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19pc-dimm: add busy slot check and slot auto-allocationIgor Mammedov
- if slot property is not specified on -device/device_add command, treat default value as request for assigning PCDIMMDevice to the first free slot. - if slot is provided with -device/device_add command, attempt to use it or fail command if it's already occupied. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19pc-dimm: add busy address check and address auto-allocationIgor Mammedov
- if 'addr' property is not specified on -device/device_add command, treat the default value as request for assigning PCDIMMDevice to the first free memory region. - if 'addr' is provided with -device/device_add command, attempt to use it or fail command if it's already occupied or falls inside of an existing PCDIMMDevice memory region. Note: GCompareFunc(a, b) used by g_slist_insert_sorted() returns 'gint', however it might be too small to fit difference between 2 addresses. So use 128bit to calculate the difference and normalize result to -1/0/1 return values. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Tested-by: Andrey Korolyov <andrey@xdel.ru> MST: commit log tweaks
2014-06-19pc: add memory hotplug handler to PC_MACHINEIgor Mammedov
that will perform mapping of PC_DIMM device into guest's RAM address space Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19pc: add 'etc/reserved-memory-end' fw_cfg interface for SeaBIOSIgor Mammedov
'etc/reserved-memory-end' will allow QEMU to tell BIOS where PCI BARs mapping could safely start in high memory. Allowing BIOS to start mapping 64-bit PCI BARs at address where it wouldn't conflict with other mappings QEMU might place before it. That permits QEMU to reserve extra address space before 64-bit PCI hole for memory hotplug. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Acked-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19pc: exit QEMU if number of slots more than supported 256Igor Mammedov
... which is imposed by current naming scheme of ACPI memory devices. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Acked-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19pc: initialize memory hotplug address spaceIgor Mammedov
initialize and map hotplug memory address space container into guest's RAM address space. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Acked-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19pc: implement pc-dimm device abstractionVasilis Liaskovitis
Each hotplug-able memory slot is a PCDIMMDevice. A hot-add operation for a memory device: - creates a new PCDIMMDevice and makes hotplug controller to map it into guest address space Hotplug operations are done through normal device_add commands. For migration case, all hotplugged memory devices on source should be specified on target's command line using '-device' option with properties set to the same values as on source. To simplify review, patch introduces only PCDIMMDevice QOM skeleton that will be extended by following patches to implement actual memory hotplug and related functions. Signed-off-by: Vasilis Liaskovitis <vasilis.liaskovitis@profitbricks.com> Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19qdev: hotplug for bus-less devicesIgor Mammedov
Add get_hotplug_handler() method to machine, and make bus-less device use it during hotplug as a means to discover a hotplug handler controller. The returned controller is used to perform hotplug actions. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Acked-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19vl.c: extend -m option to support options for memory hotplugIgor Mammedov
Add following parameters: "slots" - total number of hotplug memory slots "maxmem" - maximum possible memory "slots" and "maxmem" should go in pair and "maxmem" should be greater than "mem" for memory hotplug to be enabled. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> MST: fix build on 32 bit
2014-06-19virtio-scsi: define dummy handle_output for vhost-scsi vqsMing Lei
vhost userspace needn't to handle vq's notification from guest, so define dummy handle_output callback for all vqs of vhost-scsi. In some corner cases(such as when handling vq's reset from VM), virtio-pci still trys to handle pending virtio-scsi events, then object check failure inside virtio_scsi_handle_event() for vhost-scsi can be triggered. The issue can be reproduced by 'rmmod virtio-scsi', 'system sleep' or reboot inside VM. Cc: qemu-stable@nongnu.org Cc: Anthony Liguori <aliguori@amazon.com> Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Ming Lei <ming.lei@canonical.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-06-18pc: create custom generic PC machine typeIgor Mammedov
it will be used for PC specific options/variables Signed-off-by: Igor Mammedov <imammedo@redhat.com> Acked-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-18hw/mips: Add API to convert KVM guest KSEG0 <-> GPASanjay Lal
Add API for converting physical addresses to KVM guest KSEG0 addresses, and fix the existing API for converting KSEG0 addresses to physical addresses to work in the KVM case. Both have the same sized KSEG0, so it's just a case of fixing the mask. In KVM trap and emulate mode both the guest kernel and guest userspace execute in useg: Guest User address space: 0x00000000..0x3fffffff Guest Kernel Unmapped: 0x40000000..0x5fffffff Guest Kernel Mapped: 0x60000000..0x7fffffff Signed-off-by: Sanjay Lal <sanjayl@kymasys.com> Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-06-18virtio-scsi: add support for the any_layout featurePaolo Bonzini
Store the request and response headers by value, and let virtio_scsi_parse_req check that there is only one of datain and dataout. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-06-16spapr_pci: Advertise MSI quotaBadari Pulavarty
Hotplug of multiple disks fails due to MSI vector quota check. Number of MSI vectors default to 8 allowing only 4 devices. This happens on RHEL6.5 guest. RHEL7 and SLES11 guests fallback to INTX. One way to workaround the issue is to increase total MSIs, so that MSI quota check allows us to hotplug multiple disks. This sets the quota to the maximum number of interupts XICS has which is 1024 now (XICS_IRQS). This moves XICS_IRQS from spapr.c to xics.h for wider visibility. Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com> [aik: put XICS_IRQS=1024 instead of 64i, fixed endianness and size] Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: Alexander Graf <agraf@suse.de>
2014-06-16spapr_hcall: Add address-translation-mode-on-interrupt resource in H_SET_MODEAlexey Kardashevskiy
This adds handling of the RESOURCE_ADDR_TRANS_MODE resource from the H_SET_MODE, for POWER8 (PowerISA 2.07) only. This defines AIL flags for LPCR special register. This changes @excp_prefix according to the mode, takes effect in TCG. This turns support of a new capability PPC2_ISA207S flag for TCG. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Reviewed-by: Tom Musta <tommusta@gmail.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2014-06-16spapr_iommu: Introduce bus_offset in sPAPRTCETableAlexey Kardashevskiy
This adds @bus_offset into sPAPRTCETable to tell where TCE table starts from. It is set to 0 for emulated devices. Dynamic DMA windows will use other offset. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: Alexander Graf <agraf@suse.de>
2014-06-16spapr_iommu: Introduce page_shift in sPAPRTCETableAlexey Kardashevskiy
At the moment only 4K pages are supported by sPAPRTCETable. Since sPAPR spec allows other page sizes and we are going to implement them, we need page size to be configrable. This adds @page_shift into sPAPRTCETable and replaces SPAPR_TCE_PAGE_SHIFT with it where it is possible. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: Alexander Graf <agraf@suse.de>
2014-06-16spapr_iommu: Get rid of window_size in sPAPRTCETableAlexey Kardashevskiy
This removes window_size as it is basically a copy of nb_table shifted by SPAPR_TCE_PAGE_SHIFT. As new dynamic DMA windows are going to support windows as big as the entire RAM and this number will be bigger that 32 capacity, we will have to do something about @window_size anyway and removal seems to be the right way to go. This removes dma_window_start/dma_window_size from sPAPRPHBState as they are no longer used. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: Alexander Graf <agraf@suse.de>
2014-06-16spapr_pci: Allow multiple TCE tables per PHBAlexey Kardashevskiy
At the moment sPAPRPHBState contains a @tcet pointer to the only TCE table. However sPAPR spec allows having more than one DMA window. Since the TCE object is already a child of SPAPR PHB object, there is no need to keep an additional pointer to it in sPAPRPHBState so remove it. This changes the way sPAPRPHBState::reset performs reset of sPAPRTCETable objects. This changes the default DMA window properties calculation. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: Alexander Graf <agraf@suse.de>
2014-06-16spapr_pci: spapr_iommu: Make DMA window a subregionAlexey Kardashevskiy
Currently the default DMA window is represented by a single MemoryRegion. However there can be more than just one window so we need a "root" memory region to be separated from the actual DMA window(s). This introduces a "root" IOMMU memory region and adds a subregion for the default DMA 32bit window. Following patches will add other subregion(s). This initializes a default DMA window subregion size to the guest RAM size as this window can be switched into "bypass" mode which implements direct DMA mapping. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: Alexander Graf <agraf@suse.de>
2014-06-16spapr_pci: Introduce a finish_realize() callbackAlexey Kardashevskiy
The spapr-pci PHB initializes IOMMU for emulated devices only. The upcoming VFIO support will do it different. However both emulated and VFIO PHB types share most of the initialization code. For the type specific things a new finish_realize() callback is introduced. This introduces sPAPRPHBClass derived from PCIHostBridgeClass and adds the callback pointer. This implements finish_realize() for emulated devices. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> [agraf: Fix compilation] Signed-off-by: Alexander Graf <agraf@suse.de>
2014-06-16macio ide: Do remainder access asynchronouslyAlexander Graf
The macio IDE controller has some pretty nasty magic in its implementation to allow for unaligned sector accesses. We used to handle these accesses synchronously inside the IO callback handler. However, the block infrastructure changed below our feet and now it's impossible to call a synchronous block read/write from the aio callback handler of a previous block access. Work around that limitation by making the unaligned handling bits also go through our asynchronous handler. This fixes booting Mac OS X for me. Reported-by: John Arbuckle <programmingkidx@gmail.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2014-06-16spapr: Add ibm, client-architecture-support callAlexey Kardashevskiy
The PAPR+ specification defines a ibm,client-architecture-support (CAS) RTAS call which purpose is to provide a negotiation mechanism for the guest and the hypervisor to work out the best compatibility parameters. During the negotiation process, the guest provides an array of various options and capabilities which it supports, the hypervisor adjusts the device tree and (optionally) reboots the guest. At the moment the Linux guest calls CAS method at early boot so SLOF gets called. SLOF allocates a memory buffer for the device tree changes and calls a custom KVMPPC_H_CAS hypercall. QEMU parses the options, composes a diff for the device tree, copies it to the buffer provided by SLOF and returns to SLOF. SLOF updates the device tree and returns control to the guest kernel. Only then the Linux guest parses the device tree so it is possible to avoid unnecessary reboot in most cases. The device tree diff is a header with an update format version (defined as 1 in this patch) followed by a device tree with the properties which require update. If QEMU detects that it has to reboot the guest, it silently does so as the guest expects reboot to happen because this is usual pHyp firmware behavior. This defines custom KVMPPC_H_CAS hypercall. The current SLOF already has support for it. This implements stub which returns very basic tree (root node, no properties) to the guest. As the return buffer does not contain any change, no change in behavior is expected. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: Alexander Graf <agraf@suse.de>
2014-06-16spapr: Add support for time base offset migrationAlexey Kardashevskiy
This allows guests to have a different timebase origin from the host. This is needed for migration, where a guest can migrate from one host to another and the two hosts might have a different timebase origin. However, the timebase seen by the guest must not go backwards, and should go forwards only by a small amount corresponding to the time taken for the migration. This is only supported for recent POWER hardware which has the TBU40 (timebase upper 40 bits) register. That includes POWER6, 7, 8 but not 970. This adds kvm_access_one_reg() to access a special register which is not in env->spr. This requires kvm_set_one_reg/kvm_get_one_reg patch. The feature must be present in the host kernel. This bumps vmstate_spapr::version_id and enables new vmstate_ppc_timebase only for it. Since the vmstate_spapr::minimum_version_id remains unchanged, migration from older QEMU is supported but without vmstate_ppc_timebase. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: Alexander Graf <agraf@suse.de>
2014-06-16mac99: Added FW_CFG_PPC_BUSFREQ to match CLOCKFREQ and TBFREQ already thereBALATON Zoltan
While there, also moved the hard coded value for CLOCKFREQ to a #define. Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu> Signed-off-by: Alexander Graf <agraf@suse.de>
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