Hi Eugenio QE performed regression testing after applying this patch. This series patch introduced a qemu core dump bug, for the core dump information please review the attached file.
Tested-by: Lei Yang <leiy...@redhat.com> On Sat, Nov 25, 2023 at 1:14 AM Eugenio Pérez <epere...@redhat.com> wrote: > > Current memory operations like pinning may take a lot of time at the > destination. Currently they are done after the source of the migration is > stopped, and before the workload is resumed at the destination. This is a > period where neigher traffic can flow, nor the VM workload can continue > (downtime). > > We can do better as we know the memory layout of the guest RAM at the > destination from the moment the migration starts. Moving that operation > allows > QEMU to communicate the kernel the maps while the workload is still running in > the source, so Linux can start mapping them. Ideally, all IOMMU is > configured, > but if the vDPA parent driver uses on-chip IOMMU and .set_map we're still > saving all the pinning time. > > This is a first required step to consolidate all the members in a common > struct. This is needed because the destination does not know what vhost_vdpa > struct will have the registered listener member, so it is easier to place them > in a shared struct rather to keep them in vhost_vdpa struct. > > v1 from RFC: > * Fix vhost_vdpa_net_cvq_start checking for always_svq instead of > shadow_data. This could cause CVQ not being shadowed if > vhost_vdpa_net_cvq_start was called in the middle of a migration. > > Eugenio Pérez (13): > vdpa: add VhostVDPAShared > vdpa: move iova tree to the shared struct > vdpa: move iova_range to vhost_vdpa_shared > vdpa: move shadow_data to vhost_vdpa_shared > vdpa: use vdpa shared for tracing > vdpa: move file descriptor to vhost_vdpa_shared > vdpa: move iotlb_batch_begin_sent to vhost_vdpa_shared > vdpa: move backend_cap to vhost_vdpa_shared > vdpa: remove msg type of vhost_vdpa > vdpa: move iommu_list to vhost_vdpa_shared > vdpa: use VhostVDPAShared in vdpa_dma_map and unmap > vdpa: use dev_shared in vdpa_iommu > vdpa: move memory listener to vhost_vdpa_shared > > include/hw/virtio/vhost-vdpa.h | 36 +++++--- > hw/virtio/vdpa-dev.c | 7 +- > hw/virtio/vhost-vdpa.c | 160 +++++++++++++++++---------------- > net/vhost-vdpa.c | 117 ++++++++++++------------ > hw/virtio/trace-events | 14 +-- > 5 files changed, 174 insertions(+), 160 deletions(-) > > -- > 2.39.3 > >
core_dump_info
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