Re: [Xen-devel] Save paused cpu ctx

[Roger Pau Monné <roger.pau@xxxxxxxxxx>]

On Wed, Sep 19, 2018 at 11:21:32AM +0300, Isaila Alexandru wrote:
> Hello, 
> 
> I want to restart the discussion on dropping the "if ( v->pause_flags &
> VPF_down )" from hvm_save_cpu_ctxt() and be able to save context in a
> vcup down state. The content of the ctx could be filled like it is
> described in Intel SDM, "9.1.1 Processor State After Reset" (https://so
> ftware.intel.com/sites/default/files/managed/39/c5/325462-sdm-vol-1-
> 2abcd-3abcd.pdf   page 2996).

If the point is filling the context with the default reset state why
can't this be done by the tools if required?

It seems like saving the state of down vCPUs is quite pointless since
the state is always going to be the same, and will just increase the
size of the migration stream, but maybe I'm missing something.

Roger.

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