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H A Dpostcopy-ram.h810cf2bbd4c5c1417bda8bec49caf0ababc22860 Wed Jul 24 01:07:21 UTC 2019 Wei Yang <richardw.yang@linux.intel.com> migration/postcopy: make PostcopyDiscardState a static variable

In postcopy-ram.c, we provide three functions to discard certain
RAMBlock range:

* postcopy_discard_send_init()
* postcopy_discard_send_range()
* postcopy_discard_send_finish()

Currently, we allocate/deallocate PostcopyDiscardState for each RAMBlock
on sending discard information to destination. This is not necessary and
the same data area could be reused for each RAMBlock.

This patch defines PostcopyDiscardState a static variable. By doing so:

1) avoid memory allocation and deallocation to the system
2) avoid potential failure of memory allocation
3) hide some details for their users

Signed-off-by: Wei Yang <richardw.yang@linux.intel.com>

Message-Id: <20190724010721.2146-1-richardw.yang@linux.intel.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
H A Dpostcopy-ram.c810cf2bbd4c5c1417bda8bec49caf0ababc22860 Wed Jul 24 01:07:21 UTC 2019 Wei Yang <richardw.yang@linux.intel.com> migration/postcopy: make PostcopyDiscardState a static variable

In postcopy-ram.c, we provide three functions to discard certain
RAMBlock range:

* postcopy_discard_send_init()
* postcopy_discard_send_range()
* postcopy_discard_send_finish()

Currently, we allocate/deallocate PostcopyDiscardState for each RAMBlock
on sending discard information to destination. This is not necessary and
the same data area could be reused for each RAMBlock.

This patch defines PostcopyDiscardState a static variable. By doing so:

1) avoid memory allocation and deallocation to the system
2) avoid potential failure of memory allocation
3) hide some details for their users

Signed-off-by: Wei Yang <richardw.yang@linux.intel.com>

Message-Id: <20190724010721.2146-1-richardw.yang@linux.intel.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
H A Dram.c810cf2bbd4c5c1417bda8bec49caf0ababc22860 Wed Jul 24 01:07:21 UTC 2019 Wei Yang <richardw.yang@linux.intel.com> migration/postcopy: make PostcopyDiscardState a static variable

In postcopy-ram.c, we provide three functions to discard certain
RAMBlock range:

* postcopy_discard_send_init()
* postcopy_discard_send_range()
* postcopy_discard_send_finish()

Currently, we allocate/deallocate PostcopyDiscardState for each RAMBlock
on sending discard information to destination. This is not necessary and
the same data area could be reused for each RAMBlock.

This patch defines PostcopyDiscardState a static variable. By doing so:

1) avoid memory allocation and deallocation to the system
2) avoid potential failure of memory allocation
3) hide some details for their users

Signed-off-by: Wei Yang <richardw.yang@linux.intel.com>

Message-Id: <20190724010721.2146-1-richardw.yang@linux.intel.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>