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caijiqhx
Journeyman III

Question about SEV-SNP VMPL access VMSA

I have a question about SEV-SNP VMPL feature. I was reading the AMD64 APM vol2 15.36 SEV-SNP and found it mentioned that the vCPU running at VMPL0 can access low privilege (e.g., VMPL3) VMSA. I was wondering how VMPL0 vCPU access VMPL3 VMSA? does it use GPA or SEV API? I cannot found more details in the manual. 

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