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[Xen-devel] Re: [RFC PATCH 15/35] subarch support for controlling interr
| To: | "Martin J. Bligh" <mbligh@xxxxxxxxxx> |
|---|---|
| Subject: | [Xen-devel] Re: [RFC PATCH 15/35] subarch support for controlling interrupt delivery |
| From: | Nick Piggin <nickpiggin@xxxxxxxxxxxx> |
| Date: | Wed, 10 May 2006 00:55:01 +1000 |
| Cc: | Chris Wright <chrisw@xxxxxxxxxxxx>, virtualization@xxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, Ian Pratt <ian.pratt@xxxxxxxxxxxxx> |
| Delivery-date: | Wed, 10 May 2006 04:58:03 -0700 |
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Martin J. Bligh wrote: +/*+ * The use of 'barrier' in the following reflects their use as local-lock + * operations. Reentrancy must be prevented (e.g., __cli()) /before/ following + * critical operations are executed. All critical operations must complete + * /before/ reentrancy is permitted (e.g., __sti()). Alpha architecture also+ * includes these barriers, for example. + */Seems like an odd comment to have in an i386 header file. Also, it is only talking about compiler barriers, which have nothing to do with the architecture. And preempt_* macros should contain the correct compiler barriers, so several can be removed. -- SUSE Labs, Novell Inc.Send instant messages to your online friends http://au.messenger.yahoo.com _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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