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kvm: get/set PV EOI MSR

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Support get/set of new PV EOI MSR, for migration.
Add an optional section for MSR value - send it
out in case MSR was changed from the default value (0).

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Michael S. Tsirkin 2012-08-28 20:43:56 +03:00 • committed by Anthony Liguori
parent 651682dcf5
commit bc9a839d56
3 changed files with 35 additions and 0 deletions
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21
target-i386/machine.c
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@ -279,6 +279,13 @@ static bool async_pf_msr_needed(void *opaque)
return cpu->async_pf_en_msr != 0;
}
static bool pv_eoi_msr_needed(void *opaque)
{
CPUX86State *cpu = opaque;
return cpu->pv_eoi_en_msr != 0;
}
static const VMStateDescription vmstate_async_pf_msr = {
.name = "cpu/async_pf_msr",
.version_id = 1,
@ -290,6 +297,17 @@ static const VMStateDescription vmstate_async_pf_msr = {
}
};
static const VMStateDescription vmstate_pv_eoi_msr = {
.name = "cpu/async_pv_eoi_msr",
.version_id = 1,
.minimum_version_id = 1,
.minimum_version_id_old = 1,
.fields = (VMStateField []) {
VMSTATE_UINT64(pv_eoi_en_msr, CPUX86State),
VMSTATE_END_OF_LIST()
}
};
static bool fpop_ip_dp_needed(void *opaque)
{
CPUX86State *env = opaque;
@ -453,6 +471,9 @@ static const VMStateDescription vmstate_cpu = {
{
.vmsd = &vmstate_async_pf_msr,
.needed = async_pf_msr_needed,
} , {
.vmsd = &vmstate_pv_eoi_msr,
.needed = pv_eoi_msr_needed,
} , {
.vmsd = &vmstate_fpop_ip_dp,
.needed = fpop_ip_dp_needed,