Re: [PATCH 2/2] Drivers: hv: balloon: Online the hot-added memory"in context"
From: Dave Hansen
Date: Wed Jul 24 2013 - 17:04:33 EST
On 07/24/2013 02:29 PM, K. Y. Srinivasan wrote:
> - * Wait for the memory block to be onlined.
> - * Since the hot add has succeeded, it is ok to
> - * proceed even if the pages in the hot added region
> - * have not been "onlined" within the allowed time.
> + * Before proceeding to hot add the next segment,
> + * online the segment that has been hot added.
> - wait_for_completion_timeout(&dm_device.ol_waitevent, 5*HZ);
> + online_memory_block(start_pfn);
Ahhhhh.... You've got a timeout in the code in order to tell the
hypervisor that you were successfully able to add the memory? The
userspace addition code probably wasn't running within this timeout
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