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RE: [Xen-devel] [PATCH][VT] Patch to allowVMXdomainsto be destroyedor sh
| To: | "Keir Fraser" <Keir.Fraser@xxxxxxxxxxxx> |
|---|---|
| Subject: | RE: [Xen-devel] [PATCH][VT] Patch to allowVMXdomainsto be destroyedor shut down cleanly |
| From: | "Li, Chengyuan" <chengyuan.li@xxxxxxxxx> |
| Date: | Tue, 20 Sep 2005 17:24:08 +0800 |
| Cc: | Khoa Huynh <khoa@xxxxxxxxxx>, "Jiang, Yunhong" <yunhong.jiang@xxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx, xen-devel-bounces@xxxxxxxxxxxxxxxxxxx |
| Delivery-date: | Tue, 20 Sep 2005 09:22:04 +0000 |
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| Thread-index: | AcW9xHS4uUuVDslZT5O+CZnK9+JBBQAADxhA |
| Thread-topic: | [Xen-devel] [PATCH][VT] Patch to allowVMXdomainsto be destroyedor shut down cleanly |
Keir Fraser scribbled on 2005年9月20日 17:24: > On 20 Sep 2005, at 10:17, Li, Chengyuan wrote: > >> >> get_page/put_page has already been handled when cr3 updates, hasn't >> it? > > But it happens unconditionally doesn't it? What if the guest writes > cr3 while paging is disabled, then enables paging in cr0? Won't that > cause us to get_page() twice? No, in cr3 handler, it only get_page/put_page when paging enabled. If paging is disabled, no get_page/put_page operations. > > -- Keir > > > _______________________________________________ > Xen-devel mailing list > Xen-devel@xxxxxxxxxxxxxxxxxxx > http://lists.xensource.com/xen-devel Thanks, Chengyuan _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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