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kvm: Add missing bits to support live migration

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This patch adds the missing hooks to allow live migration in KVM mode.
It adds proper synchronization before/after saving/restoring the VCPU
states (note: PPC is untested), hooks into
cpu_physical_memory_set_dirty_tracking() to enable dirty memory logging
at KVM level, and synchronizes that drity log into QEMU's view before
running ram_live_save().

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Jan Kiszka 2009-05-02 00:22:51 +02:00 • committed by Anthony Liguori
parent 151f7749f2
commit b0a46a333a
4 changed files with 21 additions and 1 deletions
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4
target-i386/machine.c
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@ -4,6 +4,7 @@
#include "hw/isa.h"
#include "exec-all.h"
#include "kvm.h"
static void cpu_put_seg(QEMUFile *f, SegmentCache *dt)
{
@ -29,6 +30,8 @@ void cpu_save(QEMUFile *f, void *opaque)
int32_t a20_mask;
int i;
cpu_synchronize_state(env, 0);
for(i = 0; i < CPU_NB_REGS; i++)
qemu_put_betls(f, &env->regs[i]);
qemu_put_betls(f, &env->eip);
@ -321,5 +324,6 @@ int cpu_load(QEMUFile *f, void *opaque, int version_id)
/* XXX: compute redundant hflags bits */
env->hflags = hflags;
tlb_flush(env, 1);
cpu_synchronize_state(env, 1);
return 0;
}