Re: [PATCH 1/2] vfio/pci: Fix vfio-pci sub-page MMIO BAR mmaping in live migration

2021-09-12 Thread Kunkun Jiang
On 2021/9/11 6:24, Alex Williamson wrote: On Fri, 10 Sep 2021 16:33:12 +0800 Kunkun Jiang wrote: Hi Alex, On 2021/9/9 4:45, Alex Williamson wrote: On Fri, 3 Sep 2021 17:36:10 +0800 Kunkun Jiang wrote: We expand MemoryRegions of vfio-pci sub-page MMIO BARs to vfio_pci_write_config to

Re: [PATCH 1/2] vfio/pci: Fix vfio-pci sub-page MMIO BAR mmaping in live migration

2021-09-10 Thread Alex Williamson
On Fri, 10 Sep 2021 16:33:12 +0800 Kunkun Jiang wrote: > Hi Alex, > > On 2021/9/9 4:45, Alex Williamson wrote: > > On Fri, 3 Sep 2021 17:36:10 +0800 > > Kunkun Jiang wrote: > > > >> We expand MemoryRegions of vfio-pci sub-page MMIO BARs to > >> vfio_pci_write_config to improve IO

Re: [PATCH 1/2] vfio/pci: Fix vfio-pci sub-page MMIO BAR mmaping in live migration

2021-09-10 Thread Kunkun Jiang
Hi Alex, On 2021/9/9 4:45, Alex Williamson wrote: On Fri, 3 Sep 2021 17:36:10 +0800 Kunkun Jiang wrote: We expand MemoryRegions of vfio-pci sub-page MMIO BARs to vfio_pci_write_config to improve IO performance. The MemoryRegions of destination VM will not be expanded successful in live

Re: [PATCH 1/2] vfio/pci: Fix vfio-pci sub-page MMIO BAR mmaping in live migration

2021-09-08 Thread Alex Williamson
On Fri, 3 Sep 2021 17:36:10 +0800 Kunkun Jiang wrote: > We expand MemoryRegions of vfio-pci sub-page MMIO BARs to > vfio_pci_write_config to improve IO performance. > The MemoryRegions of destination VM will not be expanded > successful in live migration, because their addresses have > been

[PATCH 1/2] vfio/pci: Fix vfio-pci sub-page MMIO BAR mmaping in live migration

2021-09-03 Thread Kunkun Jiang
We expand MemoryRegions of vfio-pci sub-page MMIO BARs to vfio_pci_write_config to improve IO performance. The MemoryRegions of destination VM will not be expanded successful in live migration, because their addresses have been updated in vmstate_load_state (vfio_pci_load_config). Remove the