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Re: [Xen-devel] Xen hypervisor hangs on booting against c/s 16925
| To: | Jan Beulich <jbeulich@xxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] Xen hypervisor hangs on booting against c/s 16925 |
| From: | Keir Fraser <Keir.Fraser@xxxxxxxxxxxx> |
| Date: | Tue, 29 Jan 2008 10:45:23 +0000 |
| Cc: | xen-devel@xxxxxxxxxxxxxxxxxxx |
| Delivery-date: | Tue, 29 Jan 2008 02:47:29 -0800 |
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| Thread-topic: | [Xen-devel] Xen hypervisor hangs on booting against c/s 16925 |
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On 29/1/08 10:34, "Jan Beulich" <jbeulich@xxxxxxxxxx> wrote: > Otoh, with > PAGE_HYPERVISOR_NOCACHE encoding UC- rather than UC, mapping > WP MTRR regions this way would yield (model specific) WC, which again > seems suspicious, so maybe the VGA hole should simply be kept (from > boot, at UC-), but everything else should be forced to UC (or MTRRs > should be inquired so that at least WP regions can be kept WP). If we don't write to a MTRR WP region, then actually mapping as WC does not matter. We never write to the range 0xc0000-0xfffff. Anything we write to below 0xa0000 had better be RAM, or we've got bigger problems than the WP attribute! -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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