[PATCH V2 0/4] Add SEV_INIT_EX support

[Peter Gonda]

SEV_INIT requires users to unlock their SPI bus for the PSP's non
volatile (NV) storage. Users may wish to lock their SPI bus for numerous
reasons, to support this the PSP firmware supports SEV_INIT_EX. INIT_EX
allows the firmware to use a region of memory for its NV storage leaving
the kernel responsible for actually storing the data in a persistent
way. This series adds a new module parameter to ccp allowing users to
specify a path to a file for use as the PSP's NV storage. The ccp driver
then reads the file into memory for the PSP to use and is responsible
for writing the file whenever the PSP modifies the memory region.

Signed-off-by: Peter Gonda <pgonda@xxxxxxxxxx>
Reviewed-by: Marc Orr <marcorr@xxxxxxxxxx>
Acked-by: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Tom Lendacky <thomas.lendacky@xxxxxxx>
Cc: Brijesh Singh <brijesh.singh@xxxxxxx>
Cc: Marc Orr <marcorr@xxxxxxxxxx>
Cc: Joerg Roedel <jroedel@xxxxxxx>
Cc: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: John Allen <john.allen@xxxxxxx>
Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Cc: linux-crypto@xxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx

David Rientjes (1):
  crypto: ccp - Add SEV_INIT_EX support

Peter Gonda (3):
  crypto: ccp - Fix SEV_INIT error logging on init
  crypto: ccp - Move SEV_INIT retry for corrupted data
  crypto: ccp - Refactor out sev_fw_alloc()

 .../virt/kvm/amd-memory-encryption.rst        |   4 +
 drivers/crypto/ccp/sev-dev.c                  | 230 +++++++++++++++---
 include/linux/psp-sev.h                       |  21 ++
 3 files changed, 222 insertions(+), 33 deletions(-)

-- 
2.33.1.1089.g2158813163f-goog