QEMU

  1. Bug #1364249
  2. Comment #2

Comment 2 for bug 1364249

Revision history for this message
chao zhou (chao-zhou) wrote :

the first bad commit is
commit cc943c36faa192cd4b32af8fe5edb31894017d35
Author: Jan Kiszka <email address hidden>
Date: Sun Jul 27 09:08:29 2014 +0200

    pci: Use bus master address space for delivering MSI/MSI-X messages

    The spec says (and real HW confirms this) that, if the bus master bit
    is 0, the device will not generate any PCI accesses. MSI and MSI-X
    messages fall among these, so we should use the corresponding address
    space to deliver them. This will prevent delivery if bus master support
    is disabled.

    Cc: <email address hidden>
    Signed-off-by: Jan Kiszka <email address hidden>
    Reviewed-by: Michael S. Tsirkin <email address hidden>
    Signed-off-by: Michael S. Tsirkin <email address hidden>