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f3627d4839
This patch introduces vLAPIC state for a VM. The VM vLAPIC state can be one of the following * VM_VLAPIC_X2APIC - All the vCPUs/vLAPICs (Except for those in Disabled mode) of this VM use x2APIC mode * VM_VLAPIC_XAPIC - All the vCPUs/vLAPICs (Except for those in Disabled mode) of this VM use xAPIC mode * VM_VLAPIC_DISABLED - All the vCPUs/vLAPICs of this VM are in Disabled mode * VM_VLAPIC_TRANSITION - Some of the vCPUs/vLAPICs of this VM (Except for those in Disabled mode) are in xAPIC and the others in x2APIC Upon a vCPU updating the IA32_APIC_BASE MSR to switch LAPIC mode, this API is called to sync the vLAPIC state of the VM. Upon VM creation and reset, vLAPIC state is set to VM_VLAPIC_XAPIC, as ACRN starts the vCPUs vLAPIC in XAPIC mode. Tracked-On: #3253 Signed-off-by: Sainath Grandhi <sainath.grandhi@intel.com> Acked-by: Eddie Dong <eddie.dong@intel.com>