Re: [Qemu-devel] [PATCH 1/2] ohci: delay first SOF interrupt

2015-12-17 Thread Thomas Huth
On 16/12/15 14:39, Laurent Vivier wrote: > On overcommitted CPU, kernel can be so slow that an interrupt can > be triggered by the device whereas the driver is not ready to receive > it. This drives us into an infinite loop. > > This does not happen on real hardware because real hardware never sen

[Qemu-devel] [PATCH 1/2] ohci: delay first SOF interrupt

2015-12-16 Thread Laurent Vivier
On overcommitted CPU, kernel can be so slow that an interrupt can be triggered by the device whereas the driver is not ready to receive it. This drives us into an infinite loop. This does not happen on real hardware because real hardware never send interrupt immediately after the controller has be