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Re: [Xen-devel] [PATCH 6/6] passthrough: use domain pirq as index of str
| To: | Jan Beulich <JBeulich@xxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] [PATCH 6/6] passthrough: use domain pirq as index of struct hvm_irq_dpci's hvm_timer array |
| From: | Keir Fraser <keir@xxxxxxx> |
| Date: | Tue, 05 Apr 2011 13:05:38 +0100 |
| Cc: | |
| Delivery-date: | Tue, 05 Apr 2011 05:07:50 -0700 |
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| Thread-topic: | [Xen-devel] [PATCH 6/6] passthrough: use domain pirq as index of struct hvm_irq_dpci's hvm_timer array |
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On 05/04/2011 09:24, "Jan Beulich" <JBeulich@xxxxxxxxxx> wrote: > Such space saving wouldn't, however, suffice to generally get the > respective allocation sizes here to below PAGE_SIZE, not even when > converting the array of structures into an array of pointers to > structures. Whether a multi-level lookup mechanism would make sense here > is questionable, as it can be expected that for other than Dom0 (which > isn't hvm, and hence shouldn't use these data structures - see > http://lists.xensource.com/archives/html/xen-devel/2011-03/msg02004.html) > only very few entries would commonly be used here. An obvious alternative > would be to use rb or radix trees (both currently only used in tmem). Yes it would be preferable to be using radix trees much more widely. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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