On Wed, Jan 17, 2007 at 10:43:14AM -0600, Miller, Mike (OS Dev) wrote: > Hello, > We've been seeing some nasty data corruption issues on some platforms. > We've been capturing PCI-E traces looking for something nasty but we > haven't found anything yet. One of the hardware guys if asking if there > is a call in Linux to issue a PME_Turn_Off broadcast message. > > PME_Turn_Off Broadcast Message > Before main component power and reference clocks are turned off, the > Root Complex or Switch Downstream Port must issue a broadcast Message > that instructs all agents downstream of that point within the hierarchy > to cease initiation of any subsequent PM_PME Messages, effective > immediately upon receipt of the PME_Turn_Off Message. > > This must be initiated from the root complex. Is there such a call in > linux?
This firmware that implements the PCI-E connection should do this, I don't think there is anything that the Operating system can do to control this, as PCI-E should be transparant to the OS. Unless this is on a PCI-E Hotplug system? What is the sequence of events that cause the data corruption? thanks, greg k-h - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
