On Wed, Jun 23, 2010 at 05:21:37PM +0300, Avi Kivity wrote: > On 06/23/2010 04:59 PM, Michael S. Tsirkin wrote: >> >>> Why doesn't a device reset result in msi being cleared? >>> >> This is not a standard function reset. This is virtio specific >> command. So it only clears virtio registers. >> > > I see. We should implement FLR in qemu. We can do this. Or PM reset. however ... > If we don't already do so, we > should probably FLR anything that moves when a kexec kernel starts. Probably only whatever we want to use. But whether this will make it more, or less robust, is an open question. >>> Shouldn't a reset be equivalent to power cycling? >>> >> If we did this, driver would need to restore registers >> such as BAR etc. >> > > We could save/restore the registers we care about. It seems easier to clear registers we care about. It's also too late now: changing behaviour will break old drivers. > -- > error compiling committee.c: too many arguments to function -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
