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Re: [Xen-devel] Sources of page dirtying for HVM domains in Xen 3.2.x
| To: | xen-devel@xxxxxxxxxxxxxxxxxxx |
|---|---|
| Subject: | Re: [Xen-devel] Sources of page dirtying for HVM domains in Xen 3.2.x |
| From: | "Mike Sun" <msun@xxxxxxxxxx> |
| Date: | Fri, 3 Oct 2008 06:06:17 -0700 |
| Delivery-date: | Fri, 03 Oct 2008 06:06:40 -0700 |
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Argh. Forgot to reply to the list. Sorry about that Ian. > Within page fault handling you've also got to consider the special cases > of MMIO, PTE accessed/dirty bit update. And the emulated writes to guest PTs as well, correct? One confusing thing is that it seems that since _sh_propagate() is called before the emulated write or MMIO write that the page_dirty() would already be called and that the page_dirty() called after the emulated write is redundant? I'm probably missing something though. > Qemu-dm emulated DMA, PV driver DMA. Any way I can have Qemu not do DMA? Essentially I'm looking for a clean way of doing a copy-on-write on a guest domain's memory pages. The log-dirty mode seems most appropriate, but I have to make sure I can copy the page before it's dirtied/modified. Have any good suggestions. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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