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postcopy: OS support test

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Provide a check to see if the OS we're running on has all the bits
needed for postcopy.

Creates postcopy-ram.c which will get most of the other helpers we need.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
This commit is contained in:
Dr. David Alan Gilbert 2015-11-05 18:10:55 +00:00 • committed by Juan Quintela
parent c31b098f64
commit eb59db53a4
4 changed files with 182 additions and 1 deletions
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5
migration/savevm.c
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@ -37,6 +37,7 @@
#include "qemu/timer.h"
#include "audio/audio.h"
#include "migration/migration.h"
#include "migration/postcopy-ram.h"
#include "qapi/qmp/qerror.h"
#include "qemu/error-report.h"
#include "qemu/sockets.h"
@ -1205,6 +1206,10 @@ static int loadvm_postcopy_handle_advise(MigrationIncomingState *mis)
return -1;
}
if (!postcopy_ram_supported_by_host()) {
return -1;
}
remote_hps = qemu_get_be64(mis->from_src_file);
if (remote_hps != getpagesize()) {
/*