RE: [PATCH] Time out for possible dead loops during queuedinvalidation wait

[Yu, Fenghua]

>> Which error code is better? Is EAGAIN ok?
>
>That depends on driver details - probably EIO would be suitable, dunno.
>
>But all the callers of qi_submit_sync() seem to just drop the error
>code on the floor:
>
>	/* should never fail */
>	qi_submit_sync(&desc, iommu);
>
>and may well cause a kernel crash as a result.

Should the code go to kernel panic after timeout in qi_submit_sync() loops? When timeout (10 seconds) in the loops, something in hardware could be wrong.

Thanks.

-Fenghua
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