virt/kvm/amd-memory-encryption.rst

10 SEV is an extension to the AMD-V architecture which supports running
44 Hence, the ASID for the SEV-enabled guests must be from 1 to a maximum value
51 Secure Processor (AMD-SP). Firmware running inside the AMD-SP provides a secure
54 information, see the SEV Key Management spec [api-spec]_
60 likely return ``EFAULT``).  If non-NULL, the argument to KVM_MEMORY_ENCRYPT_OP
77 are defined in ``<linux/psp-dev.h>``.
83 ---------------
88 Returns: 0 on success, -negative on error
91 -----------------------
95 the owner's public Diffie-Hellman (PDH) key and session information.
99 Returns: 0 on success, -negative on error
114 On success, the 'handle' field contains a new handle and on error, a negative value.
121 -----------------------------
130 Returns: 0 on success, -negative on error
135                 __u64 uaddr;    /* userspace address to be encrypted (must be 16-byte aligned) */
136                 __u32 len;      /* length of the data to be encrypted (must be 16-byte aligned) */
142 -------------------------
153 Returns: 0 on success, -negative on error
165 ------------------------
170 Returns: 0 on success, -negative on error
173 -----------------------
176 SEV-enabled guest.
180 Returns: 0 on success, -negative on error
204 ----------------------
211 Returns: 0 on success, -negative on error
224 ----------------------
231 Returns: 0 on success, -negative on error
244 ------------------------
251 Returns: 0 on success, -negative on error
270 See [white-paper]_, [api-spec]_, [amd-apm]_ and [kvm-forum]_ for more info.
272 .. [white-paper] http://amd-dev.wpengine.netdna-cdn.com/wordpress/media/2013/12/AMD_Memory_Encrypti…
273 .. [api-spec] https://support.amd.com/TechDocs/55766_SEV-KM_API_Specification.pdf
274 .. [amd-apm] https://support.amd.com/TechDocs/24593.pdf (section 15.34)
275 .. [kvm-forum]  https://www.linux-kvm.org/images/7/74/02x08A-Thomas_Lendacky-AMDs_Virtualizatoin_Me…