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2017-01-10tcg/arm: Implement field extraction opcodesRichard Henderson
Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-10tcg/arm: Move isa detection to tcg-target.hRichard Henderson
This allows us to use this detection within the TCG_TARGET_HAS_* macros, instead of requiring a function call into tcg-target.inc.c. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-10tcg/aarch64: Implement field extraction opcodesRichard Henderson
Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-10tcg: Add deposit_z expanderRichard Henderson
While we don't require a new opcode, it is handy to have an expander that knows the first source is zero. Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-10tcg: Minor adjustments to deposit expandersRichard Henderson
Assert that len is not 0. Since we have asserted that ofs + len <= N, a later check for len == N implies that ofs == 0. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-10tcg: Add field extraction primitivesRichard Henderson
Adds tcg_gen_extract_* and tcg_gen_sextract_* for extraction of fixed position bitfields, much like we already have for deposit. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-10Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into stagingPeter Maydell
virtio, vhost, pc: fixes, features beginnings of iotlb support for vhost acpi hotplug rework vhost net tx flush on link down passing mtu to guests hotplug for virtio crypto fixes and cleanups all over the place Signed-off-by: Michael S. Tsirkin <mst@redhat.com> # gpg: Signature made Tue 10 Jan 2017 05:37:48 GMT # gpg: using RSA key 0x281F0DB8D28D5469 # gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" # gpg: aka "Michael S. Tsirkin <mst@redhat.com>" # 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) acpi-test: update expected files memhp: move DIMM devices into dedicated scope with related common methods memhp: don't generate memory hotplug AML if it's not enabled/supported memhp: move memory hotplug only defines to memory_hotplug.c memhp: move GPE handler_E03 into build_memory_hotplug_aml() memhp: merge build_memory_devices() into build_memory_hotplug_aml() memhp: consolidate scattered MHPD device declaration memhp: move build_memory_devices() into memory_hotplug.c memhp: move build_memory_hotplug_aml() into memory_hotplug.c tests: pc: add memory hotplug acpi tables tests virtio-net: Add MTU feature support vhost-net: Notify the backend about the host MTU vhost-user: Add MTU protocol feature and op net: virtio-net discards TX data after link down virtio: Introduce virtqueue_drop_all procedure net: vhost stop updates virtio queue state net: Add virtio queue interface to update used index from vring state balloon: Don't balloon roms virtio: fix vq->inuse recalc after migr pcie_aer: support configurable AER capa version ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-01-10acpi-test: update expected filesMichael S. Tsirkin
clean up warnings after latest hotplug changes. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2017-01-10memhp: move DIMM devices into dedicated scope with related common methodsIgor Mammedov
Move DIMM devices from global _SB scope to a new \_SB.MHPC container along with common methods used by DIMMs: MCRS, MRST, MPXM, MOST, MEJ00, MSCN, MTFY this reduces AML size on 12 * #slots bytes, i.e. up to 3072 bytes for 265 slots. 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> Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
2017-01-10memhp: don't generate memory hotplug AML if it's not enabled/supportedIgor Mammedov
That reduces DSDT by 910 bytes when memory hotplug isn't enabled. While doing so drop intermediate variables/arguments passing around ACPI_MEMORY_HOTPLUG_IO_LEN and making it local to memory_hotplug.c, hardcoding it there as it can't change. Also don't pass around ACPI_MEMORY_HOTPLUG_BASE through intermediate variables/arguments where it's not needed. Instead initialize in module static variable when MMIO region is mapped and use that within memory_hotplug.c whenever it's required. That way MMIO base specified only at one place and AML with MMIO would always use the same value. 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> Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
2017-01-10memhp: move memory hotplug only defines to memory_hotplug.cIgor Mammedov
Move defines used locally only by memory_hotplug.c into it from header files. 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> Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
2017-01-10memhp: move GPE handler_E03 into build_memory_hotplug_aml()Igor Mammedov
>From this patch all the memory hotplug related AML bits are consolidated in one place within DSTD. Follow up patches will utilize that to simplify memory hotplug related C/AML code. 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> Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
2017-01-10memhp: merge build_memory_devices() into build_memory_hotplug_aml()Igor Mammedov
It consolidates memory hotplug AML in one place within DSDT 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>
2017-01-10memhp: consolidate scattered MHPD device declarationIgor Mammedov
since static and dynamic parts of memory MHPD device are now in the same table (DSDT), there is no point keeping them scattered across the table, so consolidate it in one place. There aren't any functional change, only AML text movement from externally refferenced MHPD scope directly into MHPD device declaration. 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> Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
2017-01-10memhp: move build_memory_devices() into memory_hotplug.cIgor Mammedov
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> Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
2017-01-10memhp: move build_memory_hotplug_aml() into memory_hotplug.cIgor Mammedov
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> Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
2017-01-10tests: pc: add memory hotplug acpi tables testsIgor Mammedov
This also adds SRAT and DSDT blobs for memory hotplug variant 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> Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
2017-01-10virtio-net: Add MTU feature supportMaxime Coquelin
This patch allows advising guest with host MTU's by setting host_mtu parameter. If VIRTIO_NET_F_MTU has been successfully negotiated, MTU value is passed to the backend. Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Aaron Conole <aconole@redhat.com Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2017-01-10vhost-net: Notify the backend about the host MTUMaxime Coquelin
This patch provides a way for virtio-net to notify the backend about the host MTU set by the user. Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Aaron Conole <aconole@redhat.com> Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2017-01-10vhost-user: Add MTU protocol feature and opMaxime Coquelin
This patch implements VHOST_USER_PROTOCOL_F_NET_MTU protocol feature and VHOST_USER_NET_SET_MTU request so that the backend gets notified of the user defined host MTU. If backend supports VHOST_USER_PROTOCOL_F_REPLY_ACK, QEMU assumes MTU is valid if success is returned. Vhost-net driver sends this request through a new vhost_net_set_mtu vhost_ops entry. Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Aaron Conole <aconole@redhat.com> Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2017-01-10net: virtio-net discards TX data after link downYuri Benditovich
https://bugzilla.redhat.com/show_bug.cgi?id=1295637 Upon set_link monitor command or upon netdev deletion virtio-net sends link down indication to the guest and stops vhost if one is used. Guest driver can still submit data for TX until it recognizes link loss. If these packets not returned by the host, the Windows guest will never be able to finish disable/removal/shutdown. Now each packet sent by guest after NIC indicated link down will be completed immediately. Signed-off-by: Yuri Benditovich <yuri.benditovich@daynix.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2017-01-10virtio: Introduce virtqueue_drop_all procedureYuri Benditovich
Add procedure for fast drop of queued packets, acting like pop and push without mapping the buffers into memory. Signed-off-by: Yuri Benditovich <yuri.benditovich@daynix.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2017-01-10net: vhost stop updates virtio queue stateYuri Benditovich
Make virtio queue suitable for push operation from qemu after vhost was stopped. Signed-off-by: Yuri Benditovich <yuri.benditovich@daynix.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2017-01-10net: Add virtio queue interface to update used index from vring stateYuri Benditovich
Bring virtio queue to correct internal state for host-to-guest operations when vhost is temporary stopped. Signed-off-by: Yuri Benditovich <yuri.benditovich@daynix.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2017-01-10balloon: Don't balloon romsDr. David Alan Gilbert
A broken guest can specify physical addresses that correspond to any memory region, but it shouldn't be able to change ROM. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Cc: qemu-stable@nongnu.org Acked-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2017-01-10virtio: fix vq->inuse recalc after migrHalil Pasic
Correct recalculation of vq->inuse after migration for the corner case where the avail_idx has already wrapped but used_idx not yet. Also change the type of the VirtQueue.inuse to unsigned int. This is done to be consistent with other members representing sizes (VRing.num), and because C99 guarantees max ring size < UINT_MAX but does not guarantee max ring size < INT_MAX. Signed-off-by: Halil Pasic <pasic@linux.vnet.ibm.com> Fixes: bccdef6b ("virtio: recalculate vq->inuse after migration") CC: qemu-stable@nongnu.org Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
2017-01-10pcie_aer: support configurable AER capa versionDou Liyang
Now, AER capa version is fixed to v2, if assigned device isn't v2, then this value will be inconsistent between guest and host Signed-off-by: Dou Liyang <douly.fnst@cn.fujitsu.com> Signed-off-by: Cao jin <caoj.fnst@cn.fujitsu.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2017-01-10pcie_aer: Convert pcie_aer_init to ErrorCao jin
When user specify invalid value for property aer_log_max, device should fail to create, and report appropriate message. Signed-off-by: Cao jin <caoj.fnst@cn.fujitsu.com> Reviewed-by: Marcel Apfelbaum <marcel@redhat.com> Acked-by: Dmitry Fleytman <dmitry@daynix.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2017-01-10virtio-crypto: zeroize the key material before freeGonglei
Common practice with sensitive information (key material, passwords, etc). Prevents sensitive information from being exposed by accident later in coredumps, memory disclosure bugs when heap memory is reused, etc. Sensitive information is sometimes also held in mlocked pages to prevent it being swapped to disk but that's not being done here. Let's zeroize the memory of CryptoDevBackendSymOpInfo structure pointed for key material security. [Thanks to Stefan for help with crafting the commit message] Signed-off-by: Gonglei <arei.gonglei@huawei.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2017-01-10virtio-crypto-pci: tag virtio-crypto device hot pluggableGonglei
After resolving the relationship with cryptodev backend, the virtio crypto device supports hotplug now. Signed-off-by: Gonglei <arei.gonglei@huawei.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2017-01-10virtio-crypto: avoid one cryptodev device is used by multiple virtio crypto ↵Gonglei
devices Add the check condition for cryptodev device in order to avoid one cryptodev device is used by multiple virtio crypto devices. Signed-off-by: Gonglei <arei.gonglei@huawei.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2017-01-10virtio-crypto-pci: add check for cryptodev objectGonglei
We must assure each virtio crypto pci device has an vaild cryptodev backend object. Signed-off-by: Gonglei <arei.gonglei@huawei.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2017-01-10cryptodev: wrap the ready flagGonglei
The ready flag should be set by the children of cryptodev backend interface. Warp the setter/getter functions for it. Signed-off-by: Gonglei <arei.gonglei@huawei.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2017-01-10cryptodev: introduce a new is_used propertyGonglei
This property is used to Tag the cryptodev backend is used by virtio-crypto or not. Making cryptodev can't be hot unplugged when it's in use. Cleanup resources when cryptodev is finalized. Signed-off-by: Gonglei <arei.gonglei@huawei.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2017-01-10virtio-crypto: use the correct length for cipher operationGonglei
In some modes of cipher algorithms, the length of destination data maybe larger then source data, such as ciphertext stealing (CTS). For symmetric algorithms, the length of ciphertext is definitly equal to the plaintext for each crypto operation. So we should use the src_len instead of dst_len avoid to pass the incorrect cryptographical results to the frontend driver. Signed-off-by: Gonglei <arei.gonglei@huawei.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2017-01-10doc/pcie: correct command line examplesCao jin
Nit picking: Multi-function PCI Express Root Ports should mean that 'addr' property is mandatory, and slot is optional because it defaults to 0, and 'chassis' is mandatory for 2nd & 3rd root port because it defaults to 0 too. Bonus: fix a typo(2->3) Signed-off-by: Cao jin <caoj.fnst@cn.fujitsu.com> Reviewed-by: Marcel Apfelbaum <marcel@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2017-01-10memory: handle alias in memory_region_is_iommu()Jason Wang
Cc: Paolo Bonzini <pbonzini@redhat.com> Acked-by: Paolo Bonzini <pbonzini@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> Reviewed-by: Peter Xu <peterx@redhat.com>
2017-01-10memory: handle alias for iommu notifierJason Wang
Cc: Paolo Bonzini <pbonzini@redhat.com> Acked-by: Paolo Bonzini <pbonzini@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> Reviewed-by: Peter Xu <peterx@redhat.com>
2017-01-10acpi: add ATSR for q35Jason Wang
This patch provides ATSR which was a requirement for software that wants to enable ATS on endpoint devices behind a Root Port. This is done simply by setting ALL_PORTS which indicates all PCI-Express Root Ports support ATS transactions. 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>
2017-01-10virtio-pci: address space translation service (ATS) supportJason Wang
This patches enable the Address Translation Service support for virtio pci devices. This is needed for a guest visible Device IOTLB implementation and will be required by vhost device IOTLB API implementation for intel IOMMU. Cc: Michael S. Tsirkin <mst@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>
2017-01-10intel_iommu: support device iotlb descriptorJason Wang
This patch enables device IOTLB support for intel iommu. The major work is to implement QI device IOTLB descriptor processing and notify the device through iommu notifier. Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Eduardo Habkost <ehabkost@redhat.com> Cc: Michael S. Tsirkin <mst@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> Reviewed-by: Peter Xu <peterx@redhat.com>
2017-01-10exec: introduce address_space_get_iotlb_entry()Jason Wang
This patch introduces a helper to query the iotlb entry for a possible iova. This will be used by later device IOTLB API to enable the capability for a dataplane (e.g vhost) to query the IOTLB. Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Peter Crosthwaite <crosthwaite.peter@gmail.com> Cc: Richard Henderson <rth@twiddle.net> Acked-by: Paolo Bonzini <pbonzini@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>
2017-01-10intel_iommu: allocate new key when creating new address spaceJason Wang
We use the pointer to stack for key for new address space, this will break hash table searching, fixing by g_malloc() a new key instead. Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Eduardo Habkost <ehabkost@redhat.com> Acked-by: Peter Xu <peterx@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>
2017-01-10intel_iommu: name vtd address space with devfnJason Wang
To avoid duplicated name and ease debugging. Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Eduardo Habkost <ehabkost@redhat.com> Acked-by: Peter Xu <peterx@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>
2017-01-10virtio: convert to use DMA apiJason Wang
Currently, all virtio devices bypass IOMMU completely. This is because address_space_memory is assumed and used during DMA emulation. This patch converts the virtio core API to use DMA API. This idea is - introducing a new transport specific helper to query the dma address space. (only pci version is implemented). - query and use this address space during virtio device guest memory accessing when iommu platform (VIRTIO_F_IOMMU_PLATFORM) was enabled for this device. Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Stefan Hajnoczi <stefanha@redhat.com> Cc: Kevin Wolf <kwolf@redhat.com> Cc: Amit Shah <amit.shah@redhat.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: qemu-block@nongnu.org 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>
2017-01-10virtio-crypto: fix possible integer and heap overflowGonglei
Because the 'size_t' type is 4 bytes in 32-bit platform, which is the same with 'int'. It's easy to make 'max_len' to zero when integer overflow and then cause heap overflow if 'max_len' is zero. Using uint_64 instead of size_t to avoid the integer overflow. Cc: qemu-stable@nongnu.org Reported-by: Li Qiang <liqiang6-s@360.cn> Signed-off-by: Gonglei <arei.gonglei@huawei.com> Tested-by: Li Qiang <liqiang6-s@360.cn> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2017-01-10intel_iommu: allow migrationPeter Xu
IOMMU needs to be migrated before all the PCI devices (in case there are devices that will request for address translation). So marking it with a priority higher than the default (which PCI devices and other belong). Migration framework handled the rest. Signed-off-by: Peter Xu <peterx@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2017-01-10migration: allow to prioritize save state entriesPeter Xu
During migration, save state entries are saved/loaded without a specific order - we just traverse the savevm_state.handlers list and do it one by one. This might not be enough. There are requirements that we need to load specific device's vmstate first before others. For example, VT-d IOMMU contains DMA address remapping information, which is required by all the PCI devices to do address translations. We need to make sure IOMMU's device state is loaded before the rest of the PCI devices, so that DMA address translation can work properly. This patch provide a VMStateDescription.priority value to allow specify the priority of the saved states. The loadvm operation will be done with those devices with higher vmsd priority. Before this patch, we are possibly achieving the ordering requirement by an assumption that the ordering will be the same with the ordering that objects are created. A better way is to mark it out explicitly in the VMStateDescription table, like what this patch does. Current ordering logic is still naive and slow, but after all that's not a critical path so IMO it's a workable solution for now. Signed-off-by: Peter Xu <peterx@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2017-01-09Merge remote-tracking branch 'remotes/rth/tags/pull-tcg-20170108' into stagingPeter Maydell
TCG host support for mips64 # gpg: Signature made Sun 08 Jan 2017 17:52:17 GMT # gpg: using RSA key 0xAD1270CC4DD0279B # gpg: Good signature from "Richard Henderson <rth7680@gmail.com>" # gpg: aka "Richard Henderson <rth@redhat.com>" # gpg: aka "Richard Henderson <rth@twiddle.net>" # Primary key fingerprint: 9CB1 8DDA F8E8 49AD 2AFC 16A4 AD12 70CC 4DD0 279B * remotes/rth/tags/pull-tcg-20170108: translate-all: Avoid -Werror=switch-bool tcg-mips: Adjust qemu_ld/st for mips64 tcg-mips: Adjust calling conventions for mips64 tcg-mips: Add tcg unwind info tcg-mips: Adjust prologue for mips64 tcg-mips: Adjust load/store functions for mips64 tcg-mips: Adjust move functions for mips64 tcg-mips: Add bswap32u and bswap64 tcg-mips: Support 64-bit opcodes tcg-mips: Add mips64 opcodes tcg-mips: Move bswap code to a subroutine Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-01-09Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into stagingPeter Maydell
virtio, vhost, pc: fixes Here are some bugfixes that didn't make 2.8. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> # gpg: Signature made Fri 16 Dec 2016 21:13:43 GMT # gpg: using RSA key 0x281F0DB8D28D5469 # gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" # gpg: aka "Michael S. Tsirkin <mst@redhat.com>" # 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: virtio: avoid using guest_notifier_mask in vhost-user mode pci: fix error message for express slots i386: amd_iommu: fix MMIO register count and access tests/vhost-user-bridge: use contrib/libvhost-user contrib: add libvhost-user tests/vhost-user-bridge: do not accept more than one connection tests/vhost-user-bridge: indicate peer disconnected tests/vhost-user-bridge: remove unnecessary dispatcher_remove tests/vhost-user-bridge: remove false comment Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-04 01:35:19 +0000