Re: [PATCH] [broken?] Add MSI support to e1000

From: Chris Leech
Date: Tue Aug 24 2004 - 16:58:33 EST


On Mon, 23 Aug 2004 10:25:39 -0700, Roland Dreier
> Based on the e1000 documentation I have, the only thing required for
> the e1000 to use MSI is to set the MSI enable bit in the PCI header.
> Of course there may be some e1000 erratum involving MSI but I have not
> been able to find any indication that this is the case.

Unfortunately, there are issues with current PRO/1000 devices that
make MSI unusable. Other testing has show similar results to what you
are reporting, under low load a few interrupts can be observed to work
but the part stops working when stressed. This is why MSI has not
already been enabled in the e1000 driver.

-Chris Leech
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