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| author | Avi Kivity <avi@redhat.com> | 2012-10-03 17:42:58 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2012-10-22 14:50:08 +0200 |
| commit | 1c380f9460522f32c8dd2577b2a53d518ec91c6d (patch) | |
| tree | 49dbad84ac83432d9f727c41647cdcd81373d3ba /exec.c | |
| parent | 817dcc5368988b023c5e1d3f1444fd370c77c6a9 (diff) | |
| download | qemu-1c380f9460522f32c8dd2577b2a53d518ec91c6d.tar.gz | |
pci: honor PCI_COMMAND_MASTER
Currently we ignore PCI_COMMAND_MASTER completely: DMA succeeds even when
the bit is clear.
Honor PCI_COMMAND_MASTER by inserting a memory region into the device's
bus master address space, and tying its enable status to PCI_COMMAND_MASTER.
Tested using
setpci -s 03 COMMAND=3
while a ping was running on a NIC in slot 3. The kernel (Linux) detected
the stall and recovered after the command
setpci -s 03 COMMAND=7
was issued.
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'exec.c')
0 files changed, 0 insertions, 0 deletions