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hv: nested: support for VMXOFF emulation

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This patch implements the VMXOFF instruction. By issuing VMXOFF,
L1 guest Leaves VMX Operation.

- cleanup VCPU nested virtualization context states in VMXOFF handler.
- implement check_vmx_permission() to check permission for VMX operation
  for VMXOFF and other VMX instructions.

Tracked-On: #5923
Signed-off-by: Sainath Grandhi <sainath.grandhi@intel.com>
Signed-off-by: Zide Chen <zide.chen@intel.com>
Acked-by: Eddie Dong <eddie.dong@Intel.com>
This commit is contained in:
Zide Chen
2021-05-07 09:37:20 -07:00
committed by wenlingz
parent 3fdad3c6d1
commit 0a1ac2f4a0
3 changed files with 43 additions and 1 deletions
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hypervisor/include/arch/x86/asm/guest/nested.h
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@@ -82,6 +82,7 @@ enum VMXResult {
};
void nested_vmx_result(enum VMXResult, int error_number);
int32_t vmxon_vmexit_handler(struct acrn_vcpu *vcpu);
int32_t vmxoff_vmexit_handler(struct acrn_vcpu *vcpu);
#ifdef CONFIG_NVMX_ENABLED
struct acrn_nested {