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Re: [Xen-devel] [PATCH] disable writable pagetables on FreeBSD
| To: | Kip Macy <kip.macy@xxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] [PATCH] disable writable pagetables on FreeBSD |
| From: | Keir Fraser <Keir.Fraser@xxxxxxxxxxxx> |
| Date: | Sat, 30 Apr 2005 09:20:46 +0100 |
| Cc: | xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx> |
| Delivery-date: | Sat, 30 Apr 2005 08:22:45 +0000 |
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On 30 Apr 2005, at 03:30, Kip Macy wrote: Presumably as a result of recent changes, FreeBSD no longer works with writable page tables. In the short-term I'm more interested in functionality than performance. This patch disables them and fixes a compile issue. The obvious change is we reenabled batched wrpt mode. This requires the guest to deal with reading page directory entries that have the present bit (bit 0) cleared, even though that entry is logically present. :-) You may hav eforgotten to handle this, since it was not required all the while we were using emulation mode only. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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