| To: | "David S. Miller" <davem@xxxxxxxxxx> |
|---|---|
| Subject: | Re: [PATCH] tg3 intr masking update |
| From: | Jeff Garzik <jgarzik@xxxxxxxxx> |
| Date: | Sat, 21 Dec 2002 15:38:08 -0500 |
| Cc: | Manish Lachwani <manish@xxxxxxxxxxx>, netdev@xxxxxxxxxxx |
| In-reply-to: | <3E04CFBE.2060909@xxxxxxxxx> |
| References: | <3E04CFBE.2060909@xxxxxxxxx> |
| Sender: | netdev-bounce@xxxxxxxxxxx |
| User-agent: | Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.2) Gecko/20021202 |
Additional note about this change,The NAPI docs mention specific areas where races may occur, and coincedentally so do the tg3 docs. The tg3 docs suggest to me that in tg3_poll, after we unmask ints, we should * flush the MMIO write * check the status block for updates again* tell tg3 to deliver to us an artificial interrupt just in case we raced [IMO preferred versus simply returning 'not-done' in tg3_poll retval] But this is just a theory and not tested yet... |
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