 Home |
Products |
Support |
Community |
News |
xen-devel
Re: [Xen-devel] [PATCH] Fix hypervisor crash with unpopulated NUMA nodes
| To: | "Andre Przywara" <andre.przywara@xxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] [PATCH] Fix hypervisor crash with unpopulated NUMA nodes |
| From: | "Jan Beulich" <JBeulich@xxxxxxxxxx> |
| Date: | Wed, 07 Oct 2009 12:53:55 +0100 |
| Cc: | xen-devel@xxxxxxxxxxxxxxxxxxx |
| Delivery-date: | Wed, 07 Oct 2009 04:54:18 -0700 |
| Envelope-to: | www-data@xxxxxxxxxxxxxxxxxxx |
| In-reply-to: | <4ACC6346.5080309@xxxxxxx> |
| List-help: | <mailto:xen-devel-request@lists.xensource.com?subject=help> |
| List-id: | Xen developer discussion <xen-devel.lists.xensource.com> |
| List-post: | <mailto:xen-devel@lists.xensource.com> |
| List-subscribe: | <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe> |
| List-unsubscribe: | <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe> |
| References: | <4ACC6346.5080309@xxxxxxx> |
| Sender: | xen-devel-bounces@xxxxxxxxxxxxxxxxxxx |
>>> Andre Przywara <andre.przywara@xxxxxxx> 07.10.09 11:45 >>> >on NUMA systems with memory-less nodes Xen crashes quite early in the >hypervisor (while initializing the heaps). This is not an issue if this >happens to be the last node, but "inner" nodes trigger this reliably. >On multi-node processors it is much more likely to leave a node unequipped. >The attached patch fixes this by enumerating the node via the >node_online_map instead of counting from 0 to num_nodes. While I do not see anything wrong with the patch, I still wonder why it would be needed: It seems to indicate that node_online_map represents only nodes with memory, but imo should be representing nodes with memory or processors (leaving aside pure I/O nodes for the moment). So perhaps there's rather a problem with the setup of node_online_map somewhere? Jan _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
| <Prev in Thread] | Current Thread | [Next in Thread> |
|---|---|---|
| ||
| Previous by Date: | Re: [Xen-devel] dom0 crash with unstable, Jan Beulich |
|---|---|
| Next by Date: | Re: [Xen-devel] [PATCH] Fix hypervisor crash with unpopulated NUMA nodes, Andre Przywara |
| Previous by Thread: | [Xen-devel] [PATCH] Fix hypervisor crash with unpopulated NUMA nodes, Andre Przywara |
| Next by Thread: | Re: [Xen-devel] [PATCH] Fix hypervisor crash with unpopulated NUMA nodes, Andre Przywara |
| Indexes: | [Date] [Thread] [Top] [All Lists] |
