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Add support for async page fault to qemu

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Add save/restore of MSR for migration and cpuid bit.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
This commit is contained in:
Gleb Natapov 2010-10-24 14:27:55 +02:00 • committed by Anthony Liguori
parent 43849424cf
commit f6584ee203
4 changed files with 42 additions and 1 deletions
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26
target-i386/machine.c
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@ -373,6 +373,24 @@ static int cpu_post_load(void *opaque, int version_id)
return 0;
}
static bool async_pf_msr_needed(void *opaque)
{
CPUState *cpu = opaque;
return cpu->async_pf_en_msr != 0;
}
static const VMStateDescription vmstate_async_pf_msr = {
.name = "cpu/async_pf_msr",
.version_id = 1,
.minimum_version_id = 1,
.minimum_version_id_old = 1,
.fields = (VMStateField []) {
VMSTATE_UINT64(async_pf_en_msr, CPUState),
VMSTATE_END_OF_LIST()
}
};
static const VMStateDescription vmstate_cpu = {
.name = "cpu",
.version_id = CPU_SAVE_VERSION,
@ -475,6 +493,14 @@ static const VMStateDescription vmstate_cpu = {
VMSTATE_YMMH_REGS_VARS(ymmh_regs, CPUState, CPU_NB_REGS, 12),
VMSTATE_END_OF_LIST()
/* The above list is not sorted /wrt version numbers, watch out! */
},
.subsections = (VMStateSubsection []) {
{
.vmsd = &vmstate_async_pf_msr,
.needed = async_pf_msr_needed,
} , {
/* empty */
}
}
};