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2012-03-01Merge remote-tracking branch 'qemu-kvm/memory/core' into stagingAnthony Liguori
* qemu-kvm/memory/core: (30 commits) memory: allow phys_map tree paths to terminate early memory: unify PhysPageEntry::node and ::leaf memory: change phys_page_set() to set multiple pages memory: switch phys_page_set() to a recursive implementation memory: replace phys_page_find_alloc() with phys_page_set() memory: simplify multipage/subpage registration memory: give phys_page_find() its own tree search loop memory: make phys_page_find() return a MemoryRegionSection memory: move tlb flush to MemoryListener commit callback memory: unify the two branches of cpu_register_physical_memory_log() memory: fix RAM subpages in newly initialized pages memory: compress phys_map node pointers to 16 bits memory: store MemoryRegionSection pointers in phys_map memory: unify phys_map last level with intermediate levels memory: remove first level of l1_phys_map memory: change memory registration to rebuild the memory map on each change memory: support stateless memory listeners memory: split memory listener for the two address spaces xen: ignore I/O memory regions memory: allow MemoryListeners to observe a specific address space ...
2012-02-29memory: support stateless memory listenersAvi Kivity
Current memory listeners are incremental; that is, they are expected to maintain their own state, and receive callbacks for changes to that state. This patch adds support for stateless listeners; these work by receiving a ->begin() callback (which tells them that new state is coming), a sequence of ->region_add() and ->region_nop() callbacks, and then a ->commit() callback which signifies the end of the new state. They should ignore ->region_del() callbacks. Signed-off-by: Avi Kivity <avi@redhat.com>
2012-02-29xen: ignore I/O memory regionsAvi Kivity
Signed-off-by: Avi Kivity <avi@redhat.com>
2012-02-29memory: allow MemoryListeners to observe a specific address spaceAvi Kivity
Ignore any regions not belonging to a specified address space. Signed-off-by: Avi Kivity <avi@redhat.com>
2012-02-29memory: move ioeventfd ops to MemoryListenerAvi Kivity
This way the accelerator (kvm) can handle them directly. Signed-off-by: Avi Kivity <avi@redhat.com> Reviewed-by: Richard Henderson <rth@twiddle.net>
2012-02-29memory: switch memory listeners to a QTAILQAvi Kivity
This allows reverse iteration, which in turns allows consistent ordering among multiple listeners: l1->add l2->add l2->del l1->del Signed-off-by: Avi Kivity <avi@redhat.com> Reviewed-by: Richard Henderson <rth@twiddle.net>
2012-02-24suspend: switch acpi s3 to new infrastructure.Gerd Hoffmann
This patch switches pc s3 suspend over to the new infrastructure. The cmos_s3 qemu_irq is killed, the new notifier is used instead. The xen hack goes away with that too, the hypercall can simply be done in a notifier function now. This patch also makes the guest actually stay suspended instead of leaving suspend instantly, so it is useful for more than just testing whenever the suspend/resume cycle actually works. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-01-25memory: change dirty setting APIs to take a sizeBlue Swirl
Instead of each target knowing or guessing the guest page size, just pass the desired size of dirtied memory area. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-01-13prepare for future GPLv2+ relicensingPaolo Bonzini
All files under GPLv2 will get GPLv2+ changes starting tomorrow. event_notifier.c and exec-obsolete.h were only ever touched by Red Hat employees and can be relicensed now. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-01-05xen: Fix after recent change in dirty bitmap tracking.Anthony PERARD
A recent patch set from Avi break the dirty bitmap support of Xen. But this is because xen_sync_dirty_bitmap will return an error for an unhandled memory range (a0000 - bffff). However this is not a fatal error, so we should just continue instead of aborting. There is now an error printed when the Xen call failed. Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
2012-01-04xen: convert framebuffer dirty tracking to memory APIAvi Kivity
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2012-01-04vmstate, memory: decouple vmstate from memory APIAvi Kivity
Currently creating a memory region automatically registers it for live migration. This differs from other state (which is enumerated in a VMStateDescription structure) and ties the live migration code into the memory core. Decouple the two by introducing a separate API, vmstate_register_ram(), for registering a RAM block for migration. Currently the same implementation is reused, but later it can be moved into a separate list, and registrations can be moved to VMStateDescription blocks. Signed-off-by: Avi Kivity <avi@redhat.com>
2012-01-03xen: convert to MemoryListener APIAvi Kivity
Signed-off-by: Avi Kivity <avi@redhat.com>
2011-12-20xen, vga: add API for registering the framebufferAvi Kivity
Xen currently uses the name of a memory region to determine whether it is the framebuffer. Replace with an explicit API. Signed-off-by: Avi Kivity <avi@redhat.com>
2011-12-19xen: convert to memory APIAvi Kivity
Undo the private implementation of qemu_ram_alloc(); use the global one (which calls right back into xen_ram_alloc()). Signed-off-by: Avi Kivity <avi@redhat.com>
2011-12-19memory, xen: pass MemoryRegion to xen_ram_alloc()Avi Kivity
Currently xen_ram_alloc() relies on ram_addr, which is going away. Give it something else to use as a cookie. Signed-off-by: Avi Kivity <avi@redhat.com>
2011-09-15Drop the vm_running global variableLuiz Capitulino
Use runstate_is_running() instead, which is introduced by this commit. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2011-09-15Replace the VMSTOP macros with a proper state typeLuiz Capitulino
Today, when notifying a VM state change with vm_state_notify(), we pass a VMSTOP macro as the 'reason' argument. This is not ideal because the VMSTOP macros tell why qemu stopped and not exactly what the current VM state is. One example to demonstrate this problem is that vm_start() calls vm_state_notify() with reason=0, which turns out to be VMSTOP_USER. This commit fixes that by replacing the VMSTOP macros with a proper state type called RunState. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2011-09-09xen: use uint64_t instead of target_ulong in cpu_ioreq_moveStefano Stabellini
cpu_ioreq_move might move 8 bytes at a time so we must make sure that the temporary variable can hold 8 bytes. Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
2011-08-20Use glib memory allocation and free functionsAnthony Liguori
qemu_malloc/qemu_free no longer exist after this commit. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-07-26xen: Fix the memory registration to reflect of what is done by Xen.Anthony PERARD
A Xen guest memory is allocated by libxc. But this memory is not allocated continuously, instead, it leaves the VGA IO memory space not allocated, same for the MMIO space (at HVM_BELOW_4G_MMIO_START of size HVM_BELOW_4G_MMIO_LENGTH). So to reflect that, we do not register the physical memory for this two holes. But we still keep only one RAMBlock for the all RAM as it is more easier than have two separate blocks (1 above 4G). Also this prevent QEMU from use the MMIO space for a ROM. Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2011-07-26cpu-common: Have a ram_addr_t of uint64 with Xen.Anthony PERARD
In Xen case, memory can be bigger than the host memory. that mean a 32bits host (and QEMU) should be able to handle a RAM address of 64bits. Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2011-07-26xen: introduce xen_change_state_handlerAnthony PERARD
Remove the call to xenstore_record_dm_state from xen_main_loop_prepare that is HVM specific. Add a new vm_change_state_handler shared between xen_pv and xen_hvm machines to record the VM state to xenstore. Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2011-07-23notifier: Pass data argument to callbackJan Kiszka
This allows to pass additional information to the notifier callback which is useful if sender and receiver do not share any other distinct data structure. Will be used first for the clock reset notifier. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-07-17xen_console: support the new extended xenstore protocolStefano Stabellini
Since CS 21994 on xen-unstable.hg and CS 466608f3a32e1f9808acdf832a5843af37e5fcec on qemu-xen-unstable.git, few changes have been introduced to the PV console xenstore protocol, as described by the document docs/misc/console.txt under xen-unstable.hg. From the Qemu point of view, very few modifications are needed to correctly support the protocol: read from xenstore the "output" node that tell us what the output of the PV console is going to be. In case the output is a tty, write to xenstore the device name. Changes in v2: - fix error paths: free malloc'ed strings and close the xenstore connection before returning; - remove useless snprintf in xenstore_store_pv_console_info if i == 0. Changes in v3: - replace xs_daemon_open/xs_daemon_close with xs_open/xs_close. Changes in v4: - add a compatibility implementation of xs_open/xs_close. Changes in v5: - fix code style. [agraf] fix build error due to missing stub Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2011-07-17xen: add vkbd support for PV on HVM guestsStefano Stabellini
Register the vkbd backend even when running as device emulator for HVM guests: it is useful because it doesn't need a frequent timer like usb. Check whether the XenInput DisplayState has been set in the initialise state, rather than the input state. In case the DisplayState hasn't been set and there is no vfb for this domain, then set the XenInput DisplayState to the default one. Changed in v2: - use qemu_free instead of free; Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2011-07-17xen: enable console and disk backend in HVM modeStefano Stabellini
Initialize the Xen console backend and the Xen disk backend even when running in HVM mode so that PV on HVM drivers can connect to them. Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2011-07-17xen: Clean up map cache API namingJan Kiszka
The map cache is a Xen thing, so its API should make this clear. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2011-06-22Merge remote-tracking branch 'qmp/for-anthony' into stagingAnthony Liguori
2011-06-19xen: only track the linear framebufferStefano Stabellini
Xen can only do dirty bit tracking for one memory region, so we should explicitly avoid trying to track anything but the vga vram region. Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2011-06-19xen: Introduce VGA sync dirty bitmap supportAnthony PERARD
This patch introduces phys memory client for Xen. Only sync dirty_bitmap and set_memory are actually implemented. migration_log will stay empty for the moment. Xen can only log one range for bit change, so only the range in the first call will be synced. Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2011-06-16Allow silent system resetsJan Kiszka
This allows qemu_system_reset to be issued silently for internal purposes, ie. without sending out a monitor event. Convert the system reset after startup to the silent mode. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2011-05-08xen: Add Xen hypercall for sleep state in the cmos_s3 callback.Anthony PERARD
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2011-05-08xen: Set running state in xenstore.Anthony PERARD
This tells to the xen management tool that the machine can begin run. Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Acked-by: Alexander Graf <agraf@suse.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2011-05-08xen: Initialize event channels and io ringsArun Sharma
Open and bind event channels; map ioreq and buffered ioreq rings. Signed-off-by: Arun Sharma <arun.sharma@intel.com> Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Acked-by: Alexander Graf <agraf@suse.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2011-05-08xen: Introduce the Xen mapcacheJun Nakajima
On IA32 host or IA32 PAE host, at present, generally, we can't create an HVM guest with more than 2G memory, because generally it's almost impossible for Qemu to find a large enough and consecutive virtual address space to map an HVM guest's whole physical address space. The attached patch fixes this issue using dynamic mapping based on little blocks of memory. Each call to qemu_get_ram_ptr makes a call to qemu_map_cache with the lock option, so mapcache will not unmap these ram_ptr. Blocks that do not belong to the RAM, but usually to a device ROM or to a framebuffer, are handled in a separate function. So the whole RAMBlock can be map. Signed-off-by: Jun Nakajima <jun.nakajima@intel.com> Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2011-05-08xen: Introduce Xen Interrupt ControllerAnthony PERARD
Every set_irq call makes a Xen hypercall. Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2011-05-08piix_pci: Introduces Xen specific call for irq.Anthony PERARD
This patch introduces Xen specific call in piix_pci. The specific part for Xen is in write_config, set_irq and get_pirq. Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Acked-by: Alexander Graf <agraf@suse.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2011-05-08xen: Add xenfv machineAnthony PERARD
Introduce the Xen FV (Fully Virtualized) machine to Qemu, some more Xen specific call will be added in further patches. Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2011-05-08xen: Add initialisation of XenAnthony PERARD
The xenpv machine use the common init function. Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Acked-by: Alexander Graf <agraf@suse.de> Signed-off-by: Alexander Graf <agraf@suse.de>
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