Re: [Qemu-devel] [PATCH v9 44/56] Postcopy: Use helpers to map pages during migration

[Juan Quintela]

"Dr. David Alan Gilbert (git)" <address@hidden> wrote:
> From: "Dr. David Alan Gilbert" <address@hidden>
>
> In postcopy, the destination guest is running at the same time
> as it's receiving pages; as we receive new pages we must put
> them into the guests address space atomically to avoid a running
> CPU accessing a partially written page.
>
> Use the helpers in postcopy-ram.c to map these pages.
>
> qemu_get_buffer_in_place is used to avoid a copy out of qemu_file
> in the case that postcopy is going to do a copy anyway.
>
> Signed-off-by: Dr. David Alan Gilbert <address@hidden>

Reviewed-by: Juan Quintela <address@hidden>