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SubjectRe: [PATCH] tpm: ibmvtpm: retry on H_CLOSED in tpm_ibmvtpm_send()
On Thu, Feb 27, 2020 at 10:50:03AM -0500, George Wilson wrote:
> tpm_ibmvtpm_send() can fail during LPM resume with an H_CLOSED return
> from ibmvtpm_send_crq(). The PAPR says, 'The “partner partition
> suspended” transport event disables the associated CRQ such that any
> H_SEND_CRQ hcall() to the associated CRQ returns H_Closed until the CRQ
> has been explicitly enabled using the H_ENABLE_CRQ hcall.' This patch
> adds a check in tpm_ibmvtpm_send() for an H_CLOSED return from
> ibmvtpm_send_crq() and in that case calls tpm_ibmvtpm_resume() and
> retries the ibmvtpm_send_crq() once.
>
> Reported-by: Linh Pham <phaml@us.ibm.com>
> Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
> Signed-off-by: George Wilson <gcwilson@linux.ibm.com>

What is LPM anyway?

/Jarkko

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