dongshen f332ef15b2 hv: vlapic: use physical APIC IDs as vLAPIC IDs for pre-launched and post-launched VMs ...

In current code, ACRN uses physical APIC IDs as vLAPIC IDs for SOS,
and vCPU ids (contiguous) as vLAPIC IDs for pre-Launched and post-Launched VMs.

Using vCPU ids as vLAPIC IDs for pre-Launched and post-Launched VMs
would result in wrong CPU and cache topologies showing in the guest VMs,
and could adversely affect performance if the guest VM chooses to detect
CPU and cache topologies and optimize its behavior accordingly.

Uses physical APIC IDs as vLAPIC IDs (and related CPU/cache topology enumeration
CPUIDs passthrough) will replicate the host CPU and cache topologies in pre-Launched
and post-Launched VMs.

Tracked-On: #6020
Reviewed-by: Jason Chen CJ <jason.cj.chen@intel.com>
Signed-off-by: dongshen <dongsheng.x.zhang@intel.com>

2021-05-26 11:23:06 +08:00

..

x86

hv: vlapic: use physical APIC IDs as vLAPIC IDs for pre-launched and post-launched VMs

2021-05-26 11:23:06 +08:00