On Thu, Oct 13, 2016 at 11:52:43AM +0200, Igor Mammedov wrote:
> Signed-off-by: Igor Mammedov <imamm...@redhat.com>
> ---
> v4:
> - drop kvm_has_x2apic_api() and reuse kvm_enable_x2apic() instead
> ---
> hw/i386/kvm/apic.c | 12 ++++++++++--
> 1 file changed, 10 insertions(+), 2 deletions(-)
>
> diff --git a/hw/i386/kvm/apic.c b/hw/i386/kvm/apic.c
> index be55102..9a7dd03 100644
> --- a/hw/i386/kvm/apic.c
> +++ b/hw/i386/kvm/apic.c
> @@ -34,7 +34,11 @@ static void kvm_put_apic_state(APICCommonState *s, struct
> kvm_lapic_state *kapic
> int i;
>
> memset(kapic, 0, sizeof(*kapic));
> - kvm_apic_set_reg(kapic, 0x2, s->id << 24);
> + if (kvm_enable_x2apic() && s->apicbase & MSR_IA32_APICBASE_EXTD) {
This is going to enable x2apic unconditionally (not just check if
x2apic was enabled). Is this really what you want to do?
> + kvm_apic_set_reg(kapic, 0x2, s->initial_apic_id);
> + } else {
> + kvm_apic_set_reg(kapic, 0x2, s->id << 24);
> + }
> kvm_apic_set_reg(kapic, 0x8, s->tpr);
> kvm_apic_set_reg(kapic, 0xd, s->log_dest << 24);
> kvm_apic_set_reg(kapic, 0xe, s->dest_mode << 28 | 0x0fffffff);
> @@ -59,7 +63,11 @@ void kvm_get_apic_state(DeviceState *dev, struct
> kvm_lapic_state *kapic)
> APICCommonState *s = APIC_COMMON(dev);
> int i, v;
>
> - s->id = kvm_apic_get_reg(kapic, 0x2) >> 24;
> + if (kvm_enable_x2apic() && s->apicbase & MSR_IA32_APICBASE_EXTD) {
> + assert(kvm_apic_get_reg(kapic, 0x2) == s->initial_apic_id);
> + } else {
> + s->id = kvm_apic_get_reg(kapic, 0x2) >> 24;
> + }
> s->tpr = kvm_apic_get_reg(kapic, 0x8);
> s->arb_id = kvm_apic_get_reg(kapic, 0x9);
> s->log_dest = kvm_apic_get_reg(kapic, 0xd) >> 24;
> --
> 2.7.4
>
--
Eduardo
