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Re: [Qemu-devel] [PATCH] kvm: Mark full address range dirty on live migr
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From: |
Jan Kiszka |
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Subject: |
Re: [Qemu-devel] [PATCH] kvm: Mark full address range dirty on live migration start |
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Date: |
Sat, 23 May 2009 15:47:03 +0200 |
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User-agent: |
Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv:1.8.1.12) Gecko/20080226 SUSE/2.0.0.12-1.1 Thunderbird/2.0.0.12 Mnenhy/0.7.5.666 |
Glauber Costa wrote:
> On Fri, May 22, 2009 at 11:51:45PM +0200, Jan Kiszka wrote:
>> As Avi correctly noted, last_ram_offset does not mark the last physical
>> RAM address the guest may see (due to non-continuous memory regions).
>> Ensure that we catch them all by marking the full possible address range
>> dirty.
>>
>> Signed-off-by: Jan Kiszka <address@hidden>
> Indeed, we already do something in that lines in qemu-kvm tree,
> in a place that does not apply for It makes a lot of sense. Just
> maybe you could just -1UL instead of defining a new constant, but I don't
> really care.
I intentionally made this verbose.
>
> As soon as this is applied to master, I'll pick it for stable too.
Migration for KVM would be a new feature for stable. It requires a new
CPU save/restore format (V9). Do think that qualifies it for stable.
Jan
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