Re: [PATCH V6 0/5] Add SEV_INIT_EX support

[Herbert Xu]

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/
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