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kvm: support TSC deadline MSR with subsection

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KVM add emulation of lapic tsc deadline timer for guest.
This patch is co-operation work at qemu side.

Use subsections to save/restore the field (mtosatti).

Signed-off-by: Liu, Jinsong <jinsong.liu@intel.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
This commit is contained in:
Liu, Jinsong 2011-10-05 16:52:32 -03:00 • committed by Marcelo Tosatti
parent 38d2c27ea6
commit aa82ba549a
3 changed files with 37 additions and 0 deletions
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21
target-i386/machine.c
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@ -310,6 +310,24 @@ static const VMStateDescription vmstate_fpop_ip_dp = {
}
};
static bool tscdeadline_needed(void *opaque)
{
CPUState *env = opaque;
return env->tsc_deadline != 0;
}
static const VMStateDescription vmstate_msr_tscdeadline = {
.name = "cpu/msr_tscdeadline",
.version_id = 1,
.minimum_version_id = 1,
.minimum_version_id_old = 1,
.fields = (VMStateField []) {
VMSTATE_UINT64(tsc_deadline, CPUState),
VMSTATE_END_OF_LIST()
}
};
static const VMStateDescription vmstate_cpu = {
.name = "cpu",
.version_id = CPU_SAVE_VERSION,
@ -420,6 +438,9 @@ static const VMStateDescription vmstate_cpu = {
} , {
.vmsd = &vmstate_fpop_ip_dp,
.needed = fpop_ip_dp_needed,
}, {
.vmsd = &vmstate_msr_tscdeadline,
.needed = tscdeadline_needed,
} , {
/* empty */
}