[Qemu-devel] Re: [PATCH 4/4] KVM: Rework of guest debug state writing

[Jan Kiszka]

Marcelo Tosatti wrote:
> On Wed, Feb 03, 2010 at 10:29:45PM +0100, Jan Kiszka wrote:
>> So far we synchronized any dirty VCPU state back into the kernel before
>> updating the guest debug state. This was a tribute to a deficit in x86
>> kernels before 2.6.33. But as this is an arch-dependent issue, it is
>> better handle in the x86 part of KVM and remove the writeback point for
>> generic code.
> 
> Jan,
> 
> This patch breaks migration.

Can you elaborate what you did? I can't reproduce, and I do not see any
conceptual issue (given that guest debugging conflicts with migration
anyway).

Jan

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