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Re: [Xen-devel] VMASST_TYPE_writable_pagetables on translated domains?
| To: | Jan Beulich <jbeulich@xxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] VMASST_TYPE_writable_pagetables on translated domains? |
| From: | Keir Fraser <Keir.Fraser@xxxxxxxxxxxx> |
| Date: | Fri, 27 Apr 2007 09:36:33 +0100 |
| Delivery-date: | Fri, 27 Apr 2007 01:35:24 -0700 |
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| Thread-topic: | [Xen-devel] VMASST_TYPE_writable_pagetables on translated domains? |
| User-agent: | Microsoft-Entourage/11.3.3.061214 |
On 27/4/07 09:30, "Jan Beulich" <jbeulich@xxxxxxxxxx> wrote: > Isn't the writeable page table support intended only for non-translated > domains? > If so, shouldn't fixup_page_fault() check for this, or the setting of the > assist bit > and the PG_translate be respectively validated? If not, aren't there bits > missing > in ptwr_do_page_fault()? I think we've been here before. :-) Current shadow code supports translated domains only in shadow-mode-refcount configuration (which also implies shadow-mode-external, and hence hvm too, as it happens). In light of this there is quite some scope for simplification and rationalisation in arch/x86/mm.c. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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