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xen-devel
Re: [Xen-devel] Re: [PATCH 0/4] stubdom-dm: Support live migration of HV
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To: |
Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx> |
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Subject: |
Re: [Xen-devel] Re: [PATCH 0/4] stubdom-dm: Support live migration of HVM domain with stubdom-dm |
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From: |
Samuel Thibault <samuel.thibault@xxxxxxxxxxxx> |
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Date: |
Tue, 16 Dec 2008 15:16:59 +0100 |
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xen-devel@xxxxxxxxxxxxxxxxxxx, Yosuke Iwamatsu <y-iwamatsu@xxxxxxxxxxxxx>, Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
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Ian Jackson, le Tue 16 Dec 2008 14:04:53 +0000, a écrit :
> Samuel Thibault writes ("[Xen-devel] Re: [PATCH 0/4] stubdom-dm: Support live
> migration of HVM domain with stubdom-dm"):
> > This works thanks to the few lines at the end of the
> > cpu_physical_memory_rw() function that tell the hypervisor about
> > modified memory. Actually, the plan was even to use that bit of
> > code in all cases (not only non-stubdom), so as to get rid of the
> > logdirty shared buffer completely.
>
> I take it you're referring to this:
>
> #ifdef CONFIG_STUBDOM
> if (logdirty_bitmap != NULL)
> xc_hvm_modified_memory(xc_handle, domid, _addr >> TARGET_PAGE_BITS,
> ((_addr + _len + TARGET_PAGE_SIZE - 1) >> TARGET_PAGE_BITS)
> - (_addr >> TARGET_PAGE_BITS));
> #endif
Yes, precisely.
Samuel
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