Add ref/unref calls at the following places:
- places where memory regions are stashed by a listener and
used outside the BQL (including in Xen or KVM).
- memory_region_find callsites
- creation of aliases and containers (only the aliased/contained
region gets a reference to avoid loops)
- around calls to del_subregion/add_subregion, where the region
could disappear after the first call
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This reverts commit 9f24a8030a.
The start of the PCI hole is actually set to 0xf0000000 by hvmloader.
In order to retain ABI compatibility with Xen we leave the start of the
PCI hole at 0xf0000000 in QEMU (for Xen) too.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
So far, the size of all regions passed to listeners could fit in 64 bits,
because artificial regions (containers and aliases) are eliminated by
the memory core, leaving only device regions which have reasonable sizes
An IOMMU however cannot be eliminated by the memory core, and may have
an artificial size, hence we may need 65 bits to represent its size.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The wrong functions and the missing calls of g_free were reported
by cppcheck.
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
No need for xen_vcpu_init anymore:
- the RTC emulator doesn't have any periodic timers continuously running
even in absence of guest interactions anymore;
- qemu_dummy_start_vcpu takes care of disabling TCG for us, so we don't
need to do it manually here.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Reviewed-by: Andreas Färber <afaerber@suse.de>
We are currently setting the PCI hole to start at HVM_BELOW_4G_RAM_END,
that is 0xf0000000.
Start the PCI hole at 0xe0000000 instead, that is the same value used by
pc_init1 and qemu-xen-traditional.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
CC: qemu-stable@nongnu.org
Many of these should be cleaned up with proper qdev-/QOM-ification.
Right now there are many catch-all headers in include/hw/ARCH depending
on cpu.h, and this makes it necessary to compile these files per-target.
However, fixing this does not belong in these patches.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Both fields are used in VMState, thus need to be moved together.
Explicitly zero them on reset since they were located before
breakpoints.
Pass PowerPCCPU to kvmppc_handle_halt().
Signed-off-by: Andreas Färber <afaerber@suse.de>
Use the global first_cpu variable to halt the CPU rather than using a
local first_cpu initialized from qemu_get_cpu(0).
This will allow to change qemu_get_cpu() return type to CPUState
despite use of the CPU_COMMON halted field in the reset handler.
Signed-off-by: Andreas Färber <afaerber@suse.de>
xen-all needs to access CharDeviceState's filename field, so
it needs to include char/char.h.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Tested-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* bonzini/header-dirs: (45 commits)
janitor: move remaining public headers to include/
hw: move executable format header files to hw/
fpu: move public header file to include/fpu
softmmu: move remaining include files to include/ subdirectories
softmmu: move include files to include/sysemu/
misc: move include files to include/qemu/
qom: move include files to include/qom/
migration: move include files to include/migration/
monitor: move include files to include/monitor/
exec: move include files to include/exec/
block: move include files to include/block/
qapi: move include files to include/qobject/
janitor: add guards to headers
qapi: make struct Visitor opaque
qapi: remove qapi/qapi-types-core.h
qapi: move inclusions of qemu-common.h from headers to .c files
ui: move files to ui/ and include/ui/
qemu-ga: move qemu-ga files to qga/
net: reorganize headers
net: move net.c to net/
...
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
The current code compare i (int) with req->count (uint32_t) in a for
loop, risking an infinite loop if req->count is equal to UINT_MAX.
Also i is only used in comparisons or multiplications with unsigned
integers.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Cc: Dongxiao Xu <dongxiao.xu@intel.com>
Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Replace a lot of formulaic multiplications (containing casts, no less)
with calls to a pair of functions. This encapsulates in a single
place the operations which require care relating to integer overflow.
Cc: Dongxiao Xu <dongxiao.xu@intel.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
target_phys_addr_t is unwieldly, violates the C standard (_t suffixes are
reserved) and its purpose doesn't match the name (most target_phys_addr_t
addresses are not target specific). Replace it with a finger-friendly,
standards conformant hwaddr.
Outstanding patchsets can be fixed up with the command
git rebase -i --exec 'find -name "*.[ch]"
| xargs s/target_phys_addr_t/hwaddr/g' origin
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Using the AddressSpace type reduces confusion, as you can't accidentally
supply the MemoryRegion you're interested in.
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This patch cleans up return sentences in the end of void functions.
Reported-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Amos Kong <akong@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@gmail.com>
If the call to xc_hvm_track_dirty_vram() fails, then we set dirtybit on all the
video ram. This case happens during migration.
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
This function is to be used during live migration. Every write access to the
guest memory should call this funcion so the Xen tools knows which pages are
dirty.
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
This command is used during a migration of a guest under Xen. It calls
memory_global_dirty_log_start or memory_global_dirty_log_stop according to the
argument pass to the command.
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
If the two multiply operands are int and uint types separately,
the int type will be transformed to uint firstly, which is not the
intent in our code piece. The fix is to add (int64_t) transform
for the uint type before the multiply.
Signed-off-by: Dongxiao Xu <dongxiao.xu@intel.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Under Win32, EventNotifiers will not have event_notifier_get_fd, so we
cannot call it in common code such as hw/virtio-pci.c. Pass a pointer to
the notifier, and only retrieve the file descriptor in kvm-specific code.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
A more complete history can be found here:
git://xenbits.xensource.com/qemu-xen-unstable.git
Signed-off-by: Allen Kay <allen.m.kay@intel.com>
Signed-off-by: Guy Zana <guy@neocleus.com>
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: John V. Baboval <john.baboval@virtualcomputer.com>
Signed-off-by: Tom Goetz <tom.goetz@virtualcomputer.com>
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
rtc_clock is only used by the RTC emulator (mc146818rtc.c), however Xen
has its own RTC emulator in the hypervisor so we can disable it.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
xc_hvm_inject_msi is only available on Xen >= 4.2: add a dummy
compatibility function for Xen < 4.2.
Also enable msi support only on Xen >= 4.2.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: Anthony PERARD <anthony.perard@citrix.com>
Use the newly introduced HVM_PARAM_BUFIOREQ_EVTCHN to receive
notifications for buffered io events.
After the first notification is received leave the event channel masked
and setup a timer to process the rest of the batch.
Once we have completed processing the batch, unmask the event channel
and delete the timer.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
* sstabellini/saverestore-8:
xen: do not allocate RAM during INMIGRATE runstate
xen mapcache: check if memory region has moved.
xen: record physmap changes to xenstore
Set runstate to INMIGRATE earlier
Introduce "xen-save-devices-state"
cirrus_vga: do not reset videoram
Conflicts:
qapi-schema.json
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This patch changes the xen_map_cache behavior. Before trying to map a guest
addr, mapcache will look into the list of range of address that have been moved
(physmap/set_memory). There is currently one memory space like this, the vram,
"moved" from were it's allocated to were the guest will look into.
This help to have a succefull migration.
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Write to xenstore any physmap changes so that the hypervisor can be
aware of them.
Read physmap changes from xenstore on boot.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Scripted conversion:
for file in *.[hc] hw/*.[hc] hw/kvm/*.[hc] linux-user/*.[hc] linux-user/m68k/*.[hc] bsd-user/*.[hc] darwin-user/*.[hc] tcg/*/*.[hc] target-*/cpu.h; do
sed -i "s/CPUState/CPUArchState/g" $file
done
All occurrences of CPUArchState are expected to be replaced by QOM CPUState,
once all targets are QOM'ified and common fields have been extracted.
Signed-off-by: Andreas Färber <afaerber@suse.de>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
* 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
...
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>
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>
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>
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>
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>
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>
