[Qemu-devel] [RFC] vfio/pci: don't reset bar address when pci device no_soft_reset bit is set to "1"

[Lifei (Louis)]

Hi all

In commit a52a4c471703e995ceb06f6157d70747823e8a0d said:

The VFIO configuration space stays untouched, so the guest OS may choose
    to skip restoring the BAR addresses as they would seem intact. The PCI
    device may be left non-operational.

While the guest OS choose to restore the BAR addresses only when pci device 
no_soft_reset
is not set. So we may not reset the BAR address when no_soft_reset is set.

Thanks.
Louis

0001-vfio-pci-don-t-reset-bar-address-when-no_soft_rst-se.patch
Description: 0001-vfio-pci-don-t-reset-bar-address-when-no_soft_rst-se.patch