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

[Jérôme Arbez-Gindre]

address@hidden   (Jérôme Arbez-Gindre) writes:

> 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.


I have found my mistake, which had nothing to do with Qemu.
Thanks and apologies.

Jérôme