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Re: [Xen-devel] [PATCH] SCHEDOP_block_masked
| To: | John Levon <levon@xxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] [PATCH] SCHEDOP_block_masked |
| From: | Keir Fraser <Keir.Fraser@xxxxxxxxxxxx> |
| Date: | Fri, 10 Mar 2006 11:03:17 +0000 |
| Cc: | xen-devel@xxxxxxxxxxxxxxxxxxx |
| Delivery-date: | Fri, 10 Mar 2006 11:03:47 +0000 |
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| In-reply-to: | <20060310105824.GA20192@xxxxxxxxxxxxxxxxxxxx> |
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On 10 Mar 2006, at 10:58, John Levon wrote: Introduce SCHEDOP_block_masked, which blocks a VCPU without enabling interrupts.We need this as there are circumstances where we cannot take interrupts,and are polling in a tight loop. In particular in Solaris's kernel debugger console input. We don't want to burn CPU in a domU, but we're not in a situation where we can safely use SCHEDOP_block. Modified do_block() still checks event_pending, even if you do not clear the event_mask. Presumably you don't really want to do that? -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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