Re: [PATCH v3 13/24] powerpc/pseries: Fix handling of PLPKS object flushing timeout

Nicholas Piggin
2023-01-19T01:20:13Z

On Wed Jan 18, 2023 at 4:10 PM AEST, Andrew Donnellan wrote:
> plpks_confirm_object_flushed() uses the H_PKS_CONFIRM_OBJECT_FLUSHED hcall
> to check whether changes to an object in the Platform KeyStore have been
> flushed to non-volatile storage.
>
> The hcall returns two output values, the return code and the flush status.
> plpks_confirm_object_flushed() polls the hcall until either the flush
> status has updated, the return code is an error, or a timeout has been
> exceeded.
>
> While we're still polling, the hcall is returning H_SUCCESS (0) as the
> return code. In the timeout case, this means that upon exiting the polling
> loop, rc is 0, and therefore 0 is returned to the user.
>
> Handle the timeout case separately and return ETIMEDOUT if triggered.
>
> Fixes: 2454a7af0f2a ("powerpc/pseries: define driver for Platform KeyStore")

Can fixes go to the start of the series?

Thanks,
Nick