Re: [PATCH v4 0/5] Fixes for PMF and CCP drivers after S4

[Tom Lendacky <thomas.lendacky@amd.com>]

On 1/5/26 22:54, Mario Limonciello (AMD) wrote:
> Lars Francke reported that the PMF driver fails to work afer S4 with:
>   ccp 0000:c3:00.2: tee: command 0x5 timed out, disabling PSP
> 
> This is because there is a TA loaded to the TEE environment that
> is lost during S4.  The TEE rings need to be reinitialized and the
> TA needs to be reloaded.
> 
> This series adds those flows to the PMF and CCP drivers.

Please include a summary of the changes between versions when you submit
the next version.

Thanks,
Tom

> 
> Mario Limonciello (AMD) (4):
>   crypto: ccp - Declare PSP dead if PSP_CMD_TEE_RING_INIT fails
>   crypto: ccp - Add an S4 restore flow
>   crypto: ccp - Factor out ring destroy handling to a helper
>   crypto: ccp - Send PSP_CMD_TEE_RING_DESTROY when PSP_CMD_TEE_RING_INIT
>     fails
> 
> Shyam Sundar S K (1):
>   platform/x86/amd/pmf: Prevent TEE errors after hibernate
> 
>  drivers/crypto/ccp/psp-dev.c          | 11 +++++
>  drivers/crypto/ccp/sp-dev.h           |  2 +
>  drivers/crypto/ccp/sp-pci.c           | 24 ++++++++++-
>  drivers/crypto/ccp/tee-dev.c          | 54 +++++++++++++++++------
>  drivers/crypto/ccp/tee-dev.h          |  1 +
>  drivers/platform/x86/amd/pmf/core.c   | 62 ++++++++++++++++++++++++++-
>  drivers/platform/x86/amd/pmf/pmf.h    | 10 +++++
>  drivers/platform/x86/amd/pmf/tee-if.c | 12 ++----
>  include/linux/psp.h                   |  1 +
>  9 files changed, 154 insertions(+), 23 deletions(-)
>