libxc: increase maximum migration stream record length

Today the maximum record lenth in a migration stream is 8MB. This
limits the size of a PV domain to a little bit less than 1TB in the
migration case, as the P2M frame list will exceed 8MB in this case.

Raising the record size limit by a factor of 16 allows for domain
sizes of nearly 16TB to be migrated. This ought to be enough.

Signed-off-by: Juergen Gross <jgross@suse.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>

diff --git a/tools/libxc/xc_sr_stream_format.h b/tools/libxc/xc_sr_stream_format.h
index 3291b256fd2a31ef520095dedcc9466fe7664dac..15ff1c7efb6aee4d052e89f9e0f0f3684b919662 100644 (file)
--- a/tools/libxc/xc_sr_stream_format.h
+++ b/tools/libxc/xc_sr_stream_format.h
@@ -57,8 +57,8 @@ struct xc_sr_rhdr
 
 /* All records must be aligned up to an 8 octet boundary */
 #define REC_ALIGN_ORDER               (3U)
-/* Somewhat arbitrary - 8MB */
-#define REC_LENGTH_MAX                (8U << 20)
+/* Somewhat arbitrary - 128MB */
+#define REC_LENGTH_MAX                (128U << 20)
 
 #define REC_TYPE_END                        0x00000000U
 #define REC_TYPE_PAGE_DATA                  0x00000001U