Re: [Xen-devel] [PATCH for-4.9 2/4] tools/libxc: Avoid generating inappropriate zero-content records

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Thu, Mar 30, 2017 at 05:32:32PM +0100, Andrew Cooper wrote:
> The code as written attempted to elide zero-content records, as such records
> serve no purpose but come with a performance hit.  Unfortunately, in the case
> where the hypervisor reported max size is non-zero, but the actual size is
> zero, the record is not elided.
> 
> This previously tripped up the sanity checks in the restore side of migration,
> but as the underlying reasons for eliding the records in the first place are
> still valid, fix the elision logic.
> 
> Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

Reviewed-by: Wei Liu <wei.liu2@xxxxxxxxxx>

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