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Disable section footers on older machine types

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The next patch adds section footers; but we don't want to
break migration compatibility so disable them on older
machine types

Signed-off-by: Dr. David Alan Gilbert <dgilbert@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 2015-05-19 12:29:51 +01:00 committed by Juan Quintela
parent ce39bfc918
commit 37fb569c01
4 changed files with 12 additions and 1 deletions
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2
hw/i386/pc_piix.c
View file

@ -52,6 +52,7 @@
#ifdef CONFIG_XEN
# include <xen/hvm/hvm_info_table.h>
#endif
#include "migration/migration.h"
#define MAX_IDE_BUS 2
@ -305,6 +306,7 @@ static void pc_init1(MachineState *machine)
static void pc_compat_2_3(MachineState *machine)
{
savevm_skip_section_footers();
}
static void pc_compat_2_2(MachineState *machine)

2
hw/i386/pc_q35.c
View file

@ -45,6 +45,7 @@
#include "hw/usb.h"
#include "hw/cpu/icc_bus.h"
#include "qemu/error-report.h"
#include "migration/migration.h"
/* ICH9 AHCI has 6 ports */
#define MAX_SATA_PORTS 6
@ -289,6 +290,7 @@ static void pc_q35_init(MachineState *machine)
static void pc_compat_2_3(MachineState *machine)
{
savevm_skip_section_footers();
}
static void pc_compat_2_2(MachineState *machine)

2
include/migration/migration.h
View file

@ -194,6 +194,6 @@ size_t ram_control_save_page(QEMUFile *f, ram_addr_t block_offset,
ram_addr_t offset, size_t size,
uint64_t *bytes_sent);
void ram_mig_init(void);
void savevm_skip_section_footers(void);
#endif

7
migration/savevm.c
View file

@ -55,6 +55,8 @@
#define ARP_PTYPE_IP 0x0800
#define ARP_OP_REQUEST_REV 0x3
static bool skip_section_footers;
static int announce_self_create(uint8_t *buf,
uint8_t *mac_addr)
{
@ -611,6 +613,11 @@ static void vmstate_save(QEMUFile *f, SaveStateEntry *se, QJSON *vmdesc)
vmstate_save_state(f, se->vmsd, se->opaque, vmdesc);
}
void savevm_skip_section_footers(void)
{
skip_section_footers = true;
}
/*
* Write the header for device section (QEMU_VM_SECTION START/END/PART/FULL)
*/