[Qemu-devel] Re: [PATCH v9 8/8] x3130/downstream: support aer.

[Etienne Martineau]

On Tue, 2010-11-16 at 17:26 +0900, Isaku Yamahata wrote:
> add aer support.
> 
> Signed-off-by: Isaku Yamahata <address@hidden>

I'm actually working on a scheme to provide support to handle PCI 
errors related to assigned devices. The goal is to notify the 
coresponding driver so that all his I/O access are stop quickly and to 
provide that same driver a chance to get back in sync with the device.

I'm just wondering how can I make use of your aer support in Q35?

As you already know, error detection and error recovery phases are driven 
by a state machine where the next state depends on the returned value from 
the current callback. Also only the host can performed the link recovery 
sequence for assigned devices.

Because of such it seems like the only way to maintain consistency between 
the assigned device and it's corresponding driver is to perform the error 
detection/recovery phase in lockstep with the host?

thanks,
-Etienne