[Qemu-devel] DMA transfer failing most of the time

[Jérôme Arbez-Gindre]

Hi,
I'm writing a PCI board emulation in Qemu 0.8.1. (i386)
I'm also writing the corresponding Linux 2.6 driver.

In the emulation, I'm performing DMA transfers by calls to

cpu_physical_memory_rw()

and then, I'm generating a interrupt.

In the Linux driver, in the interrupt handler, when I check the
transferred data, the most of the time they are not updated and when
after waiting a little (10ms), I check again the transferred data,
and they are OK (most of the time).

In your opinion, is their something I'm missing ?

Any help would be appreciated.

Thanks,

Jérôme.