Most of the work on the memory API focused on memory access targets - the
memory regions
and how they are composed into an address space. This patchset tackles the
initator
side of the question - how to originate accesses.
The AddressSpace object, is exported to users and becomes the representation of
an
initiator. Each address space describes the paths from some point in the system
(a device or cpu) to the devices reachable from that initiator.
As an example, the API is used to support PCI_COMMAND_MASTER bit.
Changes from v2:
- fix series numbering
- drop MEMORY_LISTENER_DEFAULT_OPS, use traditional if (x->op) { x->op(); }
instead
Changes from v1:
- fix typo on commit log for patch 7
- add address space destruction (resolved FIXME)
Two FIXMEs are introduced for the PCI bus master address space, however they're
only
exposed by this patch set; the incorrect behaviour is preexisting. They will
be resolved
in a future patchset.
Available as a git tree in:
git://git.kernel.org/pub/scm/virt/kvm/qemu-kvm.git memory/dma
Avi Kivity (23):
memory: rename 'exec-obsolete.h'
vhost: use MemoryListener filtering to only monitor RAM address space
kvm: use separate MemoryListeners for memory and I/O
xen_pt: use separate MemoryListeners for memory and I/O
memory: prepare AddressSpace for exporting
memory: export AddressSpace
memory: maintain a list of address spaces
memory: provide defaults for MemoryListener operations
memory: drop no-op MemoryListener callbacks
vfio: drop no-op MemoryListener callbacks
xen_pt: drop no-op MemoryListener callbacks
kvm: drop no-op MemoryListener callbacks
xen: drop no-op MemoryListener callbacks
memory: manage coalesced mmio via a MemoryListener
memory: move address_space_memory and address_space_io out of memory
core
memory: move tcg flush into a tcg memory listener
memory: use AddressSpace for MemoryListener filtering
s390: avoid reaching into memory core internals
memory: per-AddressSpace dispatch
dma: make dma access its own address space
memory: add address_space_destroy()
pci: give each device its own address space
pci: honor PCI_COMMAND_MASTER
cputlb.c | 6 +-
cputlb.h | 3 +-
dma-helpers.c | 25 ++-
dma.h | 17 +-
exec-memory.h | 7 +-
exec.c | 318 +++++++++++++++--------------------
hw/Makefile.objs | 5 +-
hw/pci.c | 25 ++-
hw/pci.h | 2 +
hw/spapr_iommu.c | 3 +-
hw/vfio_pci.c | 32 +---
hw/vhost.c | 5 +-
hw/xen_pt.c | 47 +++---
hw/xen_pt.h | 1 +
kvm-all.c | 105 +++++-------
kvm-stub.c | 10 --
kvm.h | 2 -
exec-obsolete.h => memory-internal.h | 31 +++-
memory.c | 173 +++++++++++--------
memory.h | 107 +++++++++++-
target-s390x/misc_helper.c | 3 +-
xen-all.c | 44 +----
22 files changed, 488 insertions(+), 483 deletions(-)
rename exec-obsolete.h => memory-internal.h (86%)
--
1.7.12
