acrn-hypervisor/hypervisor/arch
Zide Chen 6376d5a0d3 hv: nested: fix bug in syncing EPTP from VMCS12 to VMCS02
Currently vmptrld_vmexit_handler() doesn't sync VMX_EPT_POINTER_FULL
from vmcs12 to vmcs02, instead it sets gpa_field_dirty and relies on
nested_vmentry() to sync EPTP in next nested VMentry.

This creates readability issue since all other intercepted VMCS fields
are synced in sync_vmcs12_to_vmcs02().  Another issue is that other
VMCS fields managed by gpa_field_dirty are repeatedly synced in both
vmptrld and nested vmentry handler.

This patch moves get_nept_desc() ahead of sync_vmcs12_to_vmcs02(), such
that shadow_eptp is allocated before sync_vmcs12_to_vmcs02() which
can sync EPTP properly.

BTW, in nested_vmexit_handler(), don't need to read from VMCS to get
the exit reason, since vcpu->arch.exit_reason has it already.

Tracked-On: #5923
Signed-off-by: Zide Chen <zide.chen@intel.com>
2021-09-13 15:50:01 +08:00
..
x86 hv: nested: fix bug in syncing EPTP from VMCS12 to VMCS02 2021-09-13 15:50:01 +08:00