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virtio,acpi: features, fixes, cleanups.

Browse source 
vdpa support
 virtio-mem support
 a handy script for disassembling acpi tables
 misc fixes and cleanups
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging

virtio,acpi: features, fixes, cleanups.

vdpa support
virtio-mem support
a handy script for disassembling acpi tables
misc fixes and cleanups

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

# gpg: Signature made Tue 07 Jul 2020 13:00:35 BST
# gpg:                using RSA key 5D09FD0871C8F85B94CA8A0D281F0DB8D28D5469
# gpg:                issuer "mst@redhat.com"
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" [full]
# gpg:                 aka "Michael S. Tsirkin <mst@redhat.com>" [full]
# Primary key fingerprint: 0270 606B 6F3C DF3D 0B17  0970 C350 3912 AFBE 8E67
#      Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA  8A0D 281F 0DB8 D28D 5469

* remotes/mst/tags/for_upstream: (41 commits)
  vhost-vdpa: introduce vhost-vdpa net client
  vhost-vdpa: introduce vhost-vdpa backend
  vhost_net: introduce set_config & get_config
  vhost: implement vhost_force_iommu method
  vhost: introduce new VhostOps vhost_force_iommu
  vhost: implement vhost_vq_get_addr method
  vhost: introduce new VhostOps vhost_vq_get_addr
  vhost: implement vhost_dev_start method
  vhost: introduce new VhostOps vhost_dev_start
  vhost: check the existence of vhost_set_iotlb_callback
  virtio-pci: implement queue_enabled method
  virtio-bus: introduce queue_enabled method
  vhost_net: use the function qemu_get_peer
  net: introduce qemu_get_peer
  MAINTAINERS: add VT-d entry
  docs: vhost-user: add Virtio status protocol feature
  tests/acpi: remove stale allowed tables
  numa: Auto-enable NUMA when any memory devices are possible
  virtio-mem: Exclude unplugged memory during migration
  virtio-mem: Add trace events
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

# Conflicts:
#	hw/arm/virt.c
#	hw/virtio/trace-events
This commit is contained in:
Peter Maydell 2020-07-07 17:37:44 +01:00
commit c8eaf81fd2
67 changed files with 2639 additions and 169 deletions
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41
include/exec/memory.h
View file

@ -2478,6 +2478,47 @@ static inline MemOp devend_memop(enum device_endian end)
}
#endif
/*
* Inhibit technologies that require discarding of pages in RAM blocks, e.g.,
* to manage the actual amount of memory consumed by the VM (then, the memory
* provided by RAM blocks might be bigger than the desired memory consumption).
* This *must* be set if:
* - Discarding parts of a RAM blocks does not result in the change being
* reflected in the VM and the pages getting freed.
* - All memory in RAM blocks is pinned or duplicated, invaldiating any previous
* discards blindly.
* - Discarding parts of a RAM blocks will result in integrity issues (e.g.,
* encrypted VMs).
* Technologies that only temporarily pin the current working set of a
* driver are fine, because we don't expect such pages to be discarded
* (esp. based on guest action like balloon inflation).
*
* This is *not* to be used to protect from concurrent discards (esp.,
* postcopy).
*
* Returns 0 if successful. Returns -EBUSY if a technology that relies on
* discards to work reliably is active.
*/
int ram_block_discard_disable(bool state);
/*
* Inhibit technologies that disable discarding of pages in RAM blocks.
*
* Returns 0 if successful. Returns -EBUSY if discards are already set to
* broken.
*/
int ram_block_discard_require(bool state);
/*
* Test if discarding of memory in ram blocks is disabled.
*/
bool ram_block_discard_is_disabled(void);
/*
* Test if discarding of memory in ram blocks is required to work reliably.
*/
bool ram_block_discard_is_required(void);
#endif
#endif