On Tue, Dec 07, 2021 at 03:33:01PM -0800, Peter Gonda wrote: > 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. > > V4-5 > * Fix make C=1 W=1 warnings. > > V3 > * Add another module parameter 'psp_init_on_probe' to allow for skipping > PSP init on module init. > * Fixes review comments from Sean. > * Fixes missing error checking with file reading. > * Removed setting 'error' to a set value in patch 1. > > Signed-off-by: Peter Gonda <pgonda@xxxxxxxxxx> > Reviewed-by: Marc Orr <marcorr@xxxxxxxxxx> > Acked-by: David Rientjes <rientjes@xxxxxxxxxx> > Acked-by: Brijesh Singh <brijesh.singh@xxxxxxx> > 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 (4): > crypto: ccp - Add SEV_INIT rc error logging on init > crypto: ccp - Move SEV_INIT retry for corrupted data > crypto: ccp - Refactor out sev_fw_alloc() > crypto: ccp - Add psp_init_on_probe module parameter > > .../virt/kvm/amd-memory-encryption.rst | 6 + > drivers/crypto/ccp/sev-dev.c | 259 +++++++++++++++--- > include/linux/psp-sev.h | 21 ++ > 3 files changed, 245 insertions(+), 41 deletions(-) > > -- > 2.34.1.400.ga245620fadb-goog All applied. Thanks. -- Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
