Messages in this thread | | | Date | Fri, 30 Aug 2019 11:38:52 -0300 | From | Jason Gunthorpe <> | Subject | Re: [PATCH 2/2] tpm: tpm_crb: enhance resource mapping mechanism for supporting AMD's fTPM |
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On Fri, Aug 30, 2019 at 10:54:59PM +0900, Seunghun Han wrote:
> When I tested this patch in my machine, it seemed that ACPI NVS was > saved after TPM CRB driver sent "TPM2_Shutdown(STATE)" to the fTPM > while suspending. Then, ACPI NVS was restored while resuming. > After resuming, PCRs didn't change and TPM2 tools such as > tpm2_pcrlist, tpm2_extend, tpm2_getrandoms worked well. > So, according to my test result, it seems that the patch doesn't > create bugs and race during resume.
I have a feeling that is shear luck of link time ordering and not guarenteed??
Jason
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