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spapr: Fix stale HTAB during live migration (KVM)

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If a guest reboots during a running migration, changes to the
hash page table are not necessarily updated on the destination.
Opening a new file descriptor to the HTAB forces the migration
handler to resend the entire table.

Signed-off-by: Samuel Mendoza-Jonas <sam.mj@au1.ibm.com>
Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Samuel Mendoza-Jonas 2014-11-17 15:12:28 +11:00 • committed by Alexander Graf
parent e094c4c12f
commit 01a579729b
2 changed files with 39 additions and 0 deletions
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1
include/hw/ppc/spapr.h
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@ -37,6 +37,7 @@ typedef struct sPAPREnvironment {
int htab_save_index;
bool htab_first_pass;
int htab_fd;
bool htab_fd_stale;
} sPAPREnvironment;
#define H_SUCCESS 0